Entries |
Document | Title | Date |
20080198425 | IMAGE FORMING APPARATUS - In an image forming apparatus, an energy converting unit receives light from an optical source and converts the light into electric power, and an electrical storage unit stores therein the electric power. The energy converting unit is arranged in such a manner that a relative position of the energy converting unit to the optical source is always constant when a reading unit is reading an image. | 08-21-2008 |
20080212148 | IMAGE SENSOR - An image sensor includes a light source; a bar-shaped light-guiding element having a first light-emitting section, which propagates light from the light source and irradiates an document from an oblique direction, and a second light-emitting section emitting light in a carrying direction of the document; a lens converging the light reflected from the document; a sensor receiving the light passed through the lens; a reflector disposed on the opposite side of the light-guiding element, by reflecting the light from the second light-emitting section such that an optical path of the light emitted from the second light-emitting section is located between the lens and the document, and irradiating the document from an oblique direction; and first and second light-scattering layers formed in areas opposed to the first and the second light-emitting sections, respectively, in the light-guiding element. | 09-04-2008 |
20080218813 | LIGHT SCANNING APPARATUS, LIGHT SCANNING METHOD, IMAGE FORMING APPARATUS, AND COLOR IMAGE FORMING APPARATUS - A light scanning apparatus is provided that has plural light sources which scan plural light beams in a main scanning direction. The light scanning apparatus comprises a light source control unit that controls the plural light sources. Where an array of N (N≧2) light sources aligned in a sub scanning direction and capable of scanning different positions in the sub scanning direction is called a virtual light source array, and where L (L≧2) virtual light source arrays aligned in the sub scanning direction are formed, the light source control unit causes M ((N−1)≧M≧1) light sources out of the N light sources of each of the L virtual light source arrays to emit light to form a pixel and thereby to form a total of L pixels aligned in the sub scanning direction by giving the same data to the M light sources of each of the L virtual light source arrays. | 09-11-2008 |
20080231916 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - A turning-on control unit causes a turning-on unit to apply to a light source an initial voltage when turning on the light source and to apply a rated voltage after the light source has been turned on. The initial voltage is higher than the rated voltage. An image-signal control unit controls analog signals to be input to an analog signal processing unit from a turn-on time point that is a time point at which the light source is turned on until a stabilization time point that is a time point at which output of the light source is stabilized. | 09-25-2008 |
20080231917 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - An image reading apparatus has a plurality of emitters that emit light onto a manuscript surface in a light quantity that is the synthesized light quantity of light emitted from the plurality of emitters. In the image reading apparatus, determination on the abnormality of a reference white data level value at the time of turning on a power supply is carried out through comparison between the reference white data level value with a predetermined absolute value. A normal reference white data level value is stored in a first storing unit, while a comparison white data level value detected at the time of manuscript reading operation is stored in a second storing unit. Then, a differential between the level values stored in the first and second storing units is calculated, and an abnormality determining unit compares the differential with a predetermined threshold to detect the abnormality of an emitter. | 09-25-2008 |
20080239412 | Image reading apparatus and image reading method - The invention provides, as an aspect thereof, an image reading apparatus including: a light irradiating unit that has a red-light irradiating sub-unit that irradiates red light onto a reading target object, a green-light irradiating sub-unit that irradiates green light onto the reading target object, and a blue-light irradiating sub-unit that irradiates blue light onto the reading target object; a reading unit that detects the amount of each of the red light, the green light, and the blue light; a setting unit that sets an irradiation time period for each of the red light, the green light, and the blue light on the basis of the corresponding amount of light detected by the reading unit by commanding each of the red-light irradiating sub-unit, the green-light irradiating sub-unit, and the blue-light irradiating sub-unit to irradiate light for the number of times S (where S is the sum of K, L, and M, each of which is a positive integer, where at least one of K, L, and M differs in its value from other two thereof); and a controlling unit that commands the red-light irradiating sub-unit, the green-light irradiating sub-unit, and the blue-light irradiating sub-unit to irradiate light for the respective number of times K, L, and M for the respective irradiation time periods during each reading instruction signal time interval that is set for the reading unit to read out an image of the reading target object. | 10-02-2008 |
20080247003 | METHOD AND APPARATUS FOR REMOVING SHOW-THROUGH IN SCANNED IMAGE - Provided are a method and apparatus for removing show-through of a scanned image. The method includes: performing forward scanning on a medium placed on a glass platen of an image scanner; performing backward scanning on the medium; and removing show-through of a forward-scanned image based on a backward-scanned image. | 10-09-2008 |
20080252945 | Device and Method for Generating an Image of an Object - A device for generating an image of an object is provided, comprising an illumination module, by means of which the object can be illuminated with a pattern whose phase is altered temporally a recording module by means of which a plurality of recordings of the object are carried out during the phase change of the patter, and a processing module, which generates the image from the recordings, wherein the illumination module moves a light beam over the object and modulates its intensity synchronously with the movement such that the beam generates the pattern in scanning fashion. | 10-16-2008 |
20080266618 | Optical scanner and image forming apparatus - PROBLEMS To provide an optical scanner, wherein, with a compact apparatus configuration, the image curvature on the surface to be scanned, and the unevenness in the sub-scanning magnification as well as the optical scanning speed in the main scanning direction can be reduced, and moreover, the focus shift in the sub-scanning direction on the surface to be scanned is small even for the fluctuation in oscillation wavelength of the light flux and environment.
| 10-30-2008 |
20080278773 | IMAGE READING APPARATUS - An image reading apparatus includes an integral scanning optical unit in which a light source device for illuminating an original placed on an original table, a plurality of mirrors for reflecting a light beam from the original and an imaging optical system for imaging the light beam reflected by the mirrors, upon a reading device, are integrally accommodated, wherein at least one mirror is so configured that the light beam is incident thereon twice or more, wherein, in a sub-scan section, reflection surfaces of the mirrors are disposed in a space at an original-reading-position side of a light entrance surface of the imaging optical system, and wherein the reflection surface of a mirror disposed at a position optically closest to the light entrance surface of the imaging optical system is placed at a position furthermost from the original table with respect to a direction of a normal thereto, as compared with the reflection surfaces of the remaining mirrors. | 11-13-2008 |
20080278774 | Apparatus and a method for controlling a light source used for image reading - An apparatus and a method for controlling a light source used for image reading according to a user activity are provided. The light source is turned on when the user activity that is assumed to cause image reading has been performed. | 11-13-2008 |
20080285094 | UNIFORM ILLUMINATION FOR CAMERA BASED SCANNING DEVICES - A system for imaging a document including an imaging apparatus, which includes a camera positioned inside the imaging apparatus, the camera configured to acquire a plurality of images of a document in front of the camera. The document is place behind a glass window on a wall opposing the camera. The imaging apparatus includes an illumination system which is positioned around the glass window but outside the field of view (FOV) of the camera. The imaging apparatus further includes an opaque cover, which covers the whole glass window area. The cover includes a slit to insert a document to be imaged, a slit to remove the document and a groove that enables a user to move the document with his finger. | 11-20-2008 |
20080316548 | Illumination Device, Illumination Method, Image Read Device, Image Read Method, Image-Forming Device, and Image-Forming Method - A disclosed image scanning device illuminates a document with a light source, focuses light reflected from the document on an image sensor to obtain one-dimensional images of the document, and obtains a two-dimensional image of the document from the one-dimensional images. The device includes an illumination lens for dividing a light beam emitted from the light source into multiple light beams and a combining unit for combining the multiple light beams on the document. A disclosed image scanning method includes the steps of illuminating a document with a light source; focusing light reflected from the document on an image sensor to obtain one-dimensional images of the document; and obtaining a two-dimensional image of the document from the one-dimensional images. In this method, a light beam from the light source is divided into multiple light beams and the multiple light beams are combined on the document. A disclosed image forming apparatus includes the image scanning device. | 12-25-2008 |
20090015883 | MULTI-FUNCTIONAL DEVICE HAVING SCANNER MODULE AND IMAGE SCANNING APPARATUS EMPLOYING THE SCANNER MODULE - A scanner module comprises an illuminator configured to illuminate a document by emitting light onto the document. The illuminator comprises a light source configured to emit the light and a light guide unit configured to guide the light emitted from the light source to illuminate at least two areas on the document, the center positions of the at least two areas on the document being spaced apart from each other. | 01-15-2009 |
20090015884 | SCANNER MODULE AND IMAGE SCANNING APPARATUS EMPLOYING THE SAME - Disclosed are a scanner module and an image scanning apparatus employing the same. The scanner module includes a light source generating light to be irradiated onto an object and a light guide member extending in correspondence with a width of the object. The light guide member has a reflective surface defined by a plurality of reflective grooves, some of which arranged to be non-parallel with other ones. Light is effectively diffused and/or scattered in the width direction of the light guide member by the reflective grooves, allowing a uniform light distribution across the scanning width. | 01-15-2009 |
20090021801 | LIGHT SCANNING APPARATUS AND SCANNING DISPLAY APPARATUS - A light scanning apparatus includes a scanner | 01-22-2009 |
20090027739 | Image sensor - An image sensor includes an elongated case, a light source provided in the case, a light guiding member elongated in a longitudinal direction of the case and configured to direct light emitted from the light source toward a document to be read, an optical system for collecting light reflected by the document, a sensor IC chip for receiving the light collected by the optical system, and a substrate attached to the case. The substrate is provided with a wiring pattern and carries the sensor IC chip. The case is provided with a plurality of supporting projections spaced apart from each other in the longitudinal direction. The supporting projections are held in contact with the side surface of the light guiding member. | 01-29-2009 |
20090034024 | SCANNER MODULE AND IMAGE SCANNING APPARATUS EMPLOYING THE SAME - A scanner module and an image scanning apparatus employing the same. The scanner module comprises an illuminator for illuminating light on an object to be scanned. The illuminator includes a light emitting diode, a light guide extending in a main scanning direction to change a direction of the light received from the light emitting diode, and at least one elastic member to elastically support at least one longitudinal end of the light guide. As the light guide is elastically supported by the elastic member, convex deformation or bowing of an emission face of the light guide due to thermal expansion can be reduced. | 02-05-2009 |
20090040567 | IMAGE FORMING APPARTUS AND CONTROL METHOD THEREOF - An image forming apparatus includes an image carrying body, a driving unit which rotates the image carrying body in a medium supplying direction, a light scanning unit which comprises a light source and a beam deflecting unit to scan a light beam from the light source to and fro in a main scanning direction to form a scanning line having an image section and a non image section, and a controller which stops the driving unit if the light beam from the beam deflecting unit is on the image section, and drives the driving unit if the light beam is on the non image section. | 02-12-2009 |
20090051982 | Light scanning apparatus, latent image forming apparatus and image forming apparatus - A light scanning apparatus is provided in which a light source is controlled so that the total exposure energy density of when light beams are emitted to an image carrying member across light deflection scanning of a plurality of times becomes constant on the image carrying member, thereby high image quality, long lasting output images are obtained. Exposure energy density necessary when exposure is completed by light deflection scanning of one time is set to Ex | 02-26-2009 |
20090067012 | IMAGE READING APPARATUS - An image reading apparatus includes an image reading unit that can move along a scanning direction, and reads primary image data from a medium arranged on a medium arrangement surface by moving the image reading unit from a home position to a sub-scanning direction. The image reading apparatus further includes a determining unit that determines the presence or absence of the medium on the medium arrangement surface based on determination image data that is different from primary image data, and read by the image reading unit at a determination position arranged between the home position and a reading-end position of the primary image data. | 03-12-2009 |
20090080037 | Condenser Lens and Optical Scanning Device - A condenser lens including a plurality of divided lens faces which is formed in a Fresnel lens shape with grooves on a light incidence face and a light emitting face, where the divided lens faces includes a diffraction lens face on which a plurality of steps is formed. | 03-26-2009 |
20090080038 | LIGHT GUIDE OPTICAL SYSTEM, DOCUMENT ILLUMINATING DEVICE USING SAME, AND IMAGE READING APPARATUS USING SAME - A light guide optical system guides a plurality of light beams emitted from a plurality of point light sources arranged linearly to a predetermined surface. The light guide optical system has a plurality of optical surfaces arranged periodically in the arrangement direction of the plurality of point light sources. Each of the plurality of optical surfaces has power in the arrangement direction of the plurality of point light sources. | 03-26-2009 |
20090080039 | Light Scanning Device and Image Apparatus - A light scanning device and an image forming apparatus including the light scanning device are provided. The light scanning device includes: a light emitting unit which emits a light beam; a light deflecting unit which deflects the light beam to scan in a scanning direction; a scanning lens which focuses the light beam deflected and scanned by the light deflecting unit on a photosensitive body; and a light detecting unit which detects the light beam directed to outside areas of an image formation area in the scanning direction, wherein an optical path length of the light beam directed to one of the outside areas, from the light deflecting unit to the light detecting unit is different from an optical path length of the light beam directed to the other one of the outside areas, from the light deflecting unit to the light detecting unit. | 03-26-2009 |
20090086285 | SCAN APPARATUS HAVING AN ADJUSTABLE LIGHT SOURCE AND SCAN METHOD THEREOF - A scan apparatus includes a control signal generating module, a light source module, a lighting module and a scanning module. The control signal generating module generates a control signal. The light source module provides light rays. The lighting module, electrically connected to the light source module and the control signal generating module, lights up a corresponding section of the light source module according to the control signal and extinguishes other sections of the light source module to output corresponding light rays to illuminate a document. The scanning module receives corresponding light rays processed by the document and generates an image signal corresponding to an image of the document. | 04-02-2009 |
20090091805 | LIGHT SCANNING APPARATUS, LIGHT SCANNING METHOD, IMAGE FORMING APPARATUS, COLOR IMAGE FORMING APPARATUS, AND RECORDING MEDIUM HAVING PROGRAM - A light scanning apparatus having plural light sources includes a light source control unit configured to control the light sources to form L (L≧2) light beam arrays aligned in a sub scanning direction each of which L light beam arrays are formed by causing M ((N−1)≧M≧1) light sources out of N (N≧2) light sources assigned to each of the L light beam arrays to emit light as M light emitting sources, wherein each of the L light beam arrays forms a pixel and a total of L pixels aligned in the sub scanning direction are formed. | 04-09-2009 |
20090109501 | CONTACT IMAGE SENSOR AND IMAGE FORMING APPARATUS - A contact image sensor comprises a housing, a light source provided on the upper part of the housing to irradiate light to a document, lenses arranged in the housing and provided at least on an entering side and an outgoing side to focus reflected light from a reading position of the document, an aperture angle regulation member having an inclined surface to reflect a part of light irradiated from the light source at the reading position of the document and an aperture portion into which the reflected light enters directly to regulate an aperture angle to permit the reflected light passing through the aperture portion to be irradiated to the lens on the entering side, and a light receiving element array to receive and photoelectrically convert the reflected light focused after passing through the lenses. | 04-30-2009 |
20090116080 | IMAGE READING APPARATUS - An image reading apparatus includes a plurality of LEDs, a light guide member that linearly illuminates, an LED control circuit that controls amounts of light of each LED based on reference light quantities and corrects the reference light quantities, an image sensor such as a CCD that scans an original when each of the LEDs are put on simultaneously, an analog front end (AFE) that generates read image data corresponding to the original, and a light modulation reference member disposed at a position where imaging by the CCD is possible. During correction of each of the reference light quantities, the LED control circuit puts each LED on individually. Each LED is then modulated by correcting the present outputs based on the modulated light image data generated by sensing the light modulation reference member when each of the LEDs is on and the reference light quantities based on target outputs corresponding to each of the LEDs. | 05-07-2009 |
20090122363 | ORIGINAL READER - An original reader which is capable of continuously performing a reading operation for reading images from originals without causing degradation of the quality of the read images, even when a light emitter of an illumination unit or a driving circuit for the light emitter fails. An original illuminating lamp including two LED circuit boards each having eight LED blocks linearly arranged in the main scanning direction of an original illuminates the original. An image sensor reads an image from the original illuminated by the original illuminating lamp. When it is detected that at least one of the LED blocks does not emit light, a CPU performs control such that the light amount of an LED block opposed to the LED block emitting no light is increased to be larger than when it is not detected that at least one of the LED blocks does not emit light. | 05-14-2009 |
20090122364 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - A image reading apparatus includes a plurality of point light sources, arranged in a straight line state, configured to output light for lighting a document situated on a contact glass from a lower side of the contact glass, a light leading member, positioned in front in a light outputting direction of the light output from the point light sources, configured to lead the light output from the point light sources so as to irradiate along a main scanning direction toward the document situated on the contact glass, and a photoelectric conversion element configured to receive reflection light from the document. The light leading member includes positioning means configured to make a gap between each of the point light sources arranged in a line state and the light leading member constant and make an arrangement direction of the point light sources be positioned along a longitudinal direction of the light leading member. | 05-14-2009 |
20090141316 | IMAGE FORMING APPARATUS - A deflector deflects a light beam from a light source. A scanning optical system focuses the light beam deflected by the deflector. An image carrying member is located at a focal position of the light beam and includes a surface that is scanned in a main scanning direction with the light beam focused by the scanning optical system. One pixel of an image is formed by a plurality of light spots having different focal positions in at least a sub-scanning direction. At least one light spot from among the light spots is formed on the surface of the image carrying member at a scan timing different from those of rest of the light spots. | 06-04-2009 |
20090141317 | IMAGE FORMING APPARATUS - Image forming apparatus that forms an electrostatic latent image on a surface of a photosensitive member with a laser beam, including a generation unit configured to generate a high-speed clock and a low-speed clock mutually different in frequency, a scanning unit configured to perform scanning of the laser beam in a main scanning direction based on the low-speed clock, a detection unit configured to detect the laser beam during a scanning operation performed by the scanning unit, a first shift register unit configured to receive a detection signal from the detection unit according to the high-speed clock, and an output unit configured to receive a parallel output of the first shift register unit in synchronization with the low-speed clock and to output detection timing of the laser beam as a detection signal synchronized with the low-speed clock and a value corresponding to a shift number defined by the high-speed clock. | 06-04-2009 |
20090147319 | Laser Scanner - A laser scanner may include a measuring head structured to be rotatable around a first axis, a first rotary drive structured to rotate the measuring head, a rotary mirror rotatable around a second axis, a second rotary drive structured to rotate the rotary mirror, a transmitter structured to transmit a light beam, a receiver structured to receive a reflection of the light beam from an object located at a distance from the laser scanner, and a processor structured to process signals embedded within the reflection of the light beam. The measuring head may include a plurality of modules, and the first rotary drive, rotary mirror, second rotary drive, transmitter, and receiver may be provided on one of the plurality of modules. At least two of the plurality of modules may be releasably connected to each other. | 06-11-2009 |
20090147320 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - An image forming apparatus including: a reflection member to reflect light at a first position spaced a predetermined distance from a scan glass; a moving unit to move the reflection member between the first position and a second position; and a control unit to generate initial reference data from an image signal transmitted from a scanning device to receive the light reflected by the reflection member. When the initial reference data is not suitable for shading correction, the control unit controls the moving unit to move the reflection member to the second position for reference data reacquisition. | 06-11-2009 |
20090147321 | IMAGE SENSING APPARATUS - An image sensing apparatus having a large depth of focus (DOF) and being compact in size is provided. The image sensing apparatus includes a plurality of light sources that shines light beams on an illumination portion of a document; a first mirror that receives incident light scattered by reflection from the document, to reflect the scattered light in the secondary scan direction; a plurality of first concaved aspheric mirrors that collimates light beams from the first mirror, to reflect therefrom the collimated light beams as substantially collimated light fluxes; an aperture mirror that reflects therefrom the light beams from the respective first aspheric mirrors, through apertures each having a light-shielded portion formed therearound and selectively passing the light beams therethrough; a plurality of second concaved aspheric mirrors that receives the light beams incident from the respective aperture mirror, to reflect the incident light beams as converging light beams; a second mirror that reflects the light beams in a direction perpendicular to the surface of the document, disposed on a path of the light beams to be converged by means of the second aspheric mirrors; a plurality of light receivers each having a light-receiving area that receives the light beams from the second mirrors, to form images according to the light beams from the respective apertures; and a casing where the first and second aspheric mirrors are disposed on a first side of the casing in the secondary scan direction, and the aperture mirror is disposed on a second side thereof in the secondary scan direction. | 06-11-2009 |
20090161178 | IMAGE READING APPARATUS - An image reading apparatus that detects failure in the white LEDs constituting a white LED array. Failure in the white LEDs is detected by comparison between a prescribed current threshold and the current running in the LED array detected by an image reading apparatus controller when the white LED array composed of plural LED blocks connected in parallel, each LED block being composed of plural LEDs connected in series, is powered for failure detection. This failure check is conducted by checking LEDs for failure in each of the LED blocks constituting the LED array. Image reading is not permitted when faulty LEDs are detected in two neighboring LED blocks. | 06-25-2009 |
20090168122 | Scanner and System Employing Composite Illumination - A scan module including an image sensor defining a scan field, at least one lamp positioned to illuminate at least a portion of the scan field, and a second light source positioned to provide illumination for the portion of the scan field. | 07-02-2009 |
20090174915 | LIGHT SOURCE DRIVING DEVICE, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A write control circuit includes a first data switching circuit that sets a correspondence relationship between signals from line buffers and input signals to a delay circuitry, based on a signal from a CPU; and a second data switching circuit that sets a correspondence relationship between output signals of the delay circuitry and drive signals, based on a signal from the CPU. This enables a plurality of light emitting sections to be driven properly, regardless of a main scanning direction and an arrangement of a plurality of light spots being in any of CASE-1 to CASE-4 in an optical scanning device. | 07-09-2009 |
20090180160 | OPTICAL IMAGING WITH OPTIMIZED ILLUMINATION EFFICIENCY AND UNIFORMITY - A method for uniformly illuminating a predetermined scan line position on a media sheet containing an image includes defining an optical path from a media sheet to a sensor, selecting a predetermined scan line position on the media sheet, and emitting a light beam from a light source whereby a portion of the light beam illuminates a first portion of the predetermined scan line and a portion of the light beam is reflected from a reflector to illuminate a second, opposed portion of the predetermined scan line position. A method for imaging a scan line on a media sheet includes these steps and also collecting at least a portion of the light beam reflected from or transmitted through the media sheet to image the portion of the media sheet defined by the predetermined scan line position. Still further, an optical imaging module is provided for accomplishing the described method. | 07-16-2009 |
20090195843 | Image reading apparatus, document reading apparatus, and image forming apparatus - An image reading apparatus is disclosed that includes plural line image sensors partially overlapped with each other in an overlapped reading portion, the image reading apparatus characterized by: plural light sources disposed so as to face the overlapped reading portion; a light source turn-on unit sequentially and independently turning on the light sources; an optical unit converging each light emitted from the light sources onto the overlapped reading portion; and a position shift detecting unit detecting a position shift of a reading position of the line image sensors in the overlapped reading portion based on data of the overlapped reading portion. | 08-06-2009 |
20090219584 | METHOD AND SYSTEM FOR CONTROLLING LED ILLUMINATION IN AN IMAGING DEVICE - The present subject matter relates to methods and systems for scanning documents, wherein the on and off times of an LED light source are controlled proportionally to the line sync rate of the scanner, allowing the gain value applied to an image sensor output to be fixed, and thereby eliminating the need to recalibrate the scanner each time the line sync rate is changed. This allows the LED light source to provide appropriate illumination for imaging devices, without saturation of the A/D and without color shift when scanning at different line sync rates. The LEDs are turned on during each line scan period for a set, predetermined amount of time, and then are turned off for the remaining duration of the line scan period, regardless of the line sync rate. | 09-03-2009 |
20090237750 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading apparatus includes a plurality of light sources to illuminate a document; an illumination optical system to guide light to a reading target area having a length and a width; a document illuminating device to illuminate the entire document; an image forming optical system to form an image from light reflected from the document; and a sensor provided in an image forming section of the image forming optical system to read the image of the document. The illumination optical system includes a concentration section to control light diffusion, and a reflection section. The reflection section includes at least two integrally configured reflection surfaces, in which a sine value of an angle of reflected light from at least one reflection surface is positive, while a sine value of an angle of reflected light from the rest of at least one reflection surface is negative. | 09-24-2009 |
20090251741 | SCANNER WITH LED LIGHT SOURCE - A scan module and a scanner using the same are provided. The scanner includes a housing and a scan module. The housing has a scan platform for supporting a to-be-scanned document. The scan module disposed inside the housing includes a light emitting diode (LED) light source, a reflector and an optical module. The LED light source for emitting a light beam is directed towards the reflector. The reflector is for reflecting the light beam, and the light beam reflected by the reflector is projected on the to-be-scanned document. The optical module is for receiving the light beam reflected from the to-be-scanned document placed on the scan platform. The light beam emitted by the LED light source is reflected by the reflector at least once before arriving at the to-be-scanned document. | 10-08-2009 |
20090268266 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME - In an optical scanning apparatus, the shape of a sub-scanning section of a transmissive imaging optical element on which a light beam subjected to scanning and deflected by a deflecting surface of an optical deflector is incident twice, the tilt angle of a reflective optical element disposed in an optical path between the optical deflector and a surface to be scanned, and the relationship between the transmissive imaging optical element and the reflective optical element are provided. | 10-29-2009 |
20090284810 | LIGHT GUIDE, ILLUMINATING DEVICE HAVING THE LIGHT GUIDE, AND IMAGE READING DEVICE AND INFORMATION PROCESSING APPARATUS HAVING THE ILLUMINATING DEVICE - In an illumination device, a light guide is adapted to emit the light from a face thereof and is provided with an area, on a face opposite to the light emitting face, for diffusing and/or reflecting the light introduced into the light guide from an end face thereof or is provided with uneven light emitting characteristics along the longitudinal direction of the light guide, and the center of the light source positioned at the end of the light guide is placed at a position aberrated from the normal line to the area, whereby attained are compactness, a low cost, a low electric power consumption, a high efficiency of utilization of the light emitted by the light source, and excellent and uniform illumination characteristics. An image reading device and an information processing apparatus can also be equipped with the above-mentioned illumination device. | 11-19-2009 |
20090290198 | IMAGING APPARATUS AND IMAGE CORRECTION METHOD - An image processing unit generates image data of an image based on an output signal from an imaging device, corrects the image data, and outputs corrected image data. An optical filter is structured such that an upper limit of a transmitting wavelength decreases as a distance from an optical axis of the imaging optical system increases on an imaging plane of the imaging device so that a light in an infrared region is transmitted on the optical axis and cut off at a position farthest away from the optical axis on the imaging plane. The image processing unit corrects the image data based on a correction equation corresponding to the upper limit of the transmitting wavelength. | 11-26-2009 |
20090290199 | IMAGE READING DEVICE AND IMAGE FORMING DEVICE - The present invention is aimed at providing an image reading device that suppresses generation of a so-called edge shadow while suppressing uneven intensity of light emitted onto an original. A color copy machine | 11-26-2009 |
20090290200 | DOCUMENT READ APPARATUS AND IMAGE FORMING APPARATUS - The document read apparatus according to the present invention has a light source unit that includes a linear first light and second light sources, both light sources aligned parallel to the sub scanning direction (moving direction). When the light source unit is scanning a book document in a second region shifted toward a side of the first light source from a center position for emitting light to the center of the document, a light quantity of the second light source becomes larger than a light quantity of the first light source. When the light source unit is scanning the book document in a third region shifted toward a side of the second light source from the center position, the light quantity of the first light source becomes larger than the light quantity of the second light source. A sum of both light quantities is controlled to be constant. | 11-26-2009 |
20090296168 | Systems and Methods for Glare Removal Using Polarized Filtering in Document Scanning - Systems and methods using polarized filtering for glare removal to improve the process of scanning documents, particularly bound documents with glossy content, are disclosed. The system may generally include a lighting source for illuminating a document, a lighting source polarizer attached to the lighting source to polarize light therefrom, a camera for capturing images of the document, and a camera polarizer attached to the camera. The camera polarizer and the lighting source polarizer may be positioned relative to each other so as to facilitate blocking light reflections causing glare off of the document resulting from the lighting source and arriving at the camera. The system may include multiple lighting sources, some or all of which may have a lighting source polarizer attached thereto. | 12-03-2009 |
20090316230 | IMAGE FORMING DEVICE AND EXPOSURE APPARATUS - An exposure apparatus for an image forming apparatus is provided, the exposure apparatus being downsized by reducing the substrate on which a row of light emitting elements are provided in size in the sub-scanning direction. The exposure apparatus comprises a glass substrate, a row of light emitting elements constituted by multiple organic EL elements on the glass substrate, and a drive control unit for receiving from outside the glass substrate control signals for driving the organic EL elements and controlling the drive of the light emitting elements based on the control signals, wherein the drive control unit is at least partly placed on the extended line of the row of light emitting elements. | 12-24-2009 |
20090316231 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS THEREWITH - An image reading apparatus includes: a lamp shining light on a target original document to be read; a lamp operating circuit for turning on the lamp; an image sensor receiving light shone from the lamp to the original document and reflected from the original document, for generating image data; a control section outputting a lamp control signal for controlling turning-on and -off of the lamp to the lamp operating circuit; and a lamp control circuit, separate from the control section, outputting a lamp control signal for controlling turning-on and -off of the lamp and, when a main power switch of the apparatus is turned on, permitting the lamp to be turned on before the control section is activated. | 12-24-2009 |
20100002273 | Segmented Reflective Optical System - An optical system, used for scanning, forms an image using reflective optical surfaces. The system may be telecentric, and may form an image that is reduced in size as compared with the scanned original. Several image-forming optical channels may be combined to form a page-wide scanning array. | 01-07-2010 |
20100020369 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device includes: a foreign-matter image position detection unit that detects a predetermined foreign-matter image from the image read by a document reading unit when the document conveyed by a document conveying unit comes off from a document reading position and detects a main scanning direction position of the foreign-matter image in the main scanning direction; and a lighting control unit that lights up the light-emitting element group arranged in the main scanning direction and lights up the light-emitting elements within a predetermined range from the main scanning direction position of the foreign-matter image in a light emission mode that is different from a light emission mode of other light-emitting elements when the foreign-matter image is detected by the foreign-matter image position detection unit. | 01-28-2010 |
20100033773 | IMAGE READING METHOD AND IMAGE READING APPARATUS - There is provided a method of reading an image by reading reflected light from a document that is illuminated. The method includes illuminating the document with light from a light source, changing a degree of diffusion of the light applied from the light source to the document, and reading reflected light from the document. The degree of diffusion is changed in accordance with a type of the document. | 02-11-2010 |
20100046046 | OPTICAL SCANNER FOR IMAGE FORMING APPARATUS - An optical scanner for an image forming apparatus has a housing having a wall surface provided with a through-hole, and an optical scanning unit, which is provided within the housing, scans light on an object to be scanned in order to form an image on the object to be scanned, and includes: a polygon motor; a polygon mirror that reflects the light while being rotated by a driving force of the polygon motor; a mirror member that reflects the light reflected by the polygon mirror, toward a target object; and a mirror holding member that is attached to the wall surface of the housing and holds the mirror member. The mirror holding member has a heat radiation part that is exposed to the outside of the housing through the through-hole. | 02-25-2010 |
20100046047 | IMAGE PROCESSING APPARATUS, METHOD OF IMAGING PROCESSING AND STORAGE MEDIUM - An image processing apparatus determines a direction of document placement relative to a scanning direction based on a direction of a shadow region in an input image when a line sensor having a light receiving element performs a scan and an image read from a book document by a reading apparatus is input. When the direction of the binding portion of the document is determined to be along a longitudinal direction of the line sensor, an image of a region read by the light receiving element of the line sensor from reflected light undergoing specular reflection from the document is detected based on the amount of variation in luminance between adjacent pixels in the read image of the book document. Luminance of the image corresponding to the region is corrected. | 02-25-2010 |
20100053702 | IMAGE READING APPARATUS AND METHOD TO CORRECT IMAGES - An image reading apparatus to read an image and generate pixel data representing the image is provided. The image reading apparatus includes an image sensor having a plurality of sensor units, each of which includes a plurality of light receiving elements, a data storage store shading correction data, which is used to correct unevenness caused in the pixel data, including first shading correction data, and a data corrector to correct the pixel data output from the light receiving elements based on the shading correction data. The data corrector corrects the pixel data based on the first shading correction data when a number of light receiving elements used to read the image in each sensor unit is greater than a number of pieces of correcting information in the first shading correction data. | 03-04-2010 |
20100053703 | APPARATUS FOR IMAGING OBJECTS OF CHANGING LUMINANCE - In an imaging apparatus, a function whose value increases in time is used as a threshold electric-signal level, and an electric-signal level of a photoreceptor element is compared with the threshold electric-signal level. Even if a light received by the photoreceptor element has a low luminance, the electric-signal level of the photoreceptor element crosses the threshold electric-signal level in a short time, allowing calculation of the amount of optical energy received by the photoreceptor element. Furthermore, when an object having a region where brightness changes in time and also having a region with a low luminance is imaged, imaging interval is changed in accordance with luminance. Accordingly, information regarding how the brightness of the object is rapidly changing in time can be obtained more precisely, and an image can be output without making a projection image of the dark region completely black. | 03-04-2010 |
20100067070 | IMAGE READING DEVICE - An image reading device includes: a line illuminator for irradiating a document G; an erecting equal-magnification lens array operative to condense light reflected by the document G and including a stack of a first lens array plate and a second lens array plate each provided with an arrangement of a plurality of lenses on both sides thereof; a line image sensor operative to receive the light condensed by the erecting equal-magnification lens array; a housing for securing the line illuminator, the erecting equal-magnification lens array, and the line image sensor in their places; and a first light shielding member, a second light shielding member, and a third light shielding member operative to prevent light not contributing to imaging from entering the lenses. The first light shielding member, the second light shielding member, and the third light shielding member are formed as one piece with the main part of the housing. | 03-18-2010 |
20100079826 | IMAGING APPARATUS FOR READING INFORMATION - A liquid crystal panel includes an iris unit for limiting the incident range of light from an object to be shot, and a filter unit for assigning a exposure energy distribution varying with the position to incident light whose incident range is limited by the iris unit. The control unit controls the ON time and the OFF time of each pixel of the liquid crystal panel, and then a low pass filter operation on the captured image as an image processing can be optically replaced. | 04-01-2010 |
20100085615 | Image reading apparatus and image reading method - An image reading apparatus is provided which enables image data of high S/N ratio with constant resolution to be acquired without fluctuations in resolution over the entire area of an original document, while actualizing the compact image reading apparatus by minimizing the spaces on the opposite end sides in the sub-scanning direction of the platen, has a line light source for applying light to the original document, a carriage installed with the line light source to travel in a sub-scanning direction of the document, a stepping motor for driving the carriage, a line sensor for receiving the reflected light of the document guided by the optical means to convert into image data, and control means for performing traveling control of the carriage, blinking control of the line light source, and control for capturing the image data from the line sensor, and captures the image data from the line sensor while varying a period of a motor clock signal to drive the stepping motor for a duration of acceleration control for starting traveling of the carriage to reach constant-velocity traveling after starting reading of the document. | 04-08-2010 |
20100097665 | Apparatus and Method for Pattern-Based Configuration of Optical Sensing Systems - According to a method and apparatus taught herein, an optical sensor uses pattern recognition in its optical detection processing to “see” detection patterns that correspond to predefined configuration settings. In one embodiment, for example, an optical sensing system selects an operational configuration by detecting a pattern embodied in received light data and comparing the detected pattern to one or more internally stored patterns. Each stored pattern represents a different operational configuration of the optical sensing system. If the detected pattern matches one of the stored patterns, the optical sensing system adopts the operational configuration corresponding to the matched stored pattern. Further, in one or more embodiments, the optical sensing system enters a configuration mode by an external stimulus, e.g., responsive to a configuration mode input, and the aforementioned pattern detection-based configuration selection is enabled only while in the configuration mode. | 04-22-2010 |
20100097666 | COPYING APPARATUS - A copying apparatus detects a non glossy portion (K, M, C, or Y) and a glossy portion (T) of a document based on image data output from a reader unit. The copying apparatus forms an image of the detected non glossy portion (K, M, C, or Y) with a colored toner and an image of the detected glossy portion (T) with a transparent toner, on a sheet, based on the image data output from the reader unit. | 04-22-2010 |
20100103482 | IMAGE READING DEVICE AND CONTROL METHOD THEREOF - An image reading device having an improved shading compensation capability and a method thereof are disclosed. The image reading device includes an automatic document feed unit to deliver documents along a document delivery path. A light source unit including a light source to illuminate a first criterion image at a first position within the image reading device, and to illuminate the documents delivered by the automatic document feed unit at a second position. The image reading device further includes a second criterion image arranged to opposingly face the light source unit when the light source unit is located at the second position. The second criterion image extends along a sufficient length to cover the scanning range of the light illumination by the light source unit along a main scanning direction. An image acquisition unit is provided to acquire criterion shading data, auxiliary shading data and image data by receiving light reflected from the first criterion image, the second criterion image and the documents, respectively. A control unit is able to update the criterion shading data using the auxiliary shading data, and to use the updated criterion shading data to compensate the image data. | 04-29-2010 |
20100103483 | Document Acquisition System and Document Acquisition Method - A document acquisition system and a document acquisition method for optically acquiring a document, include at least one luminous device for illuminating the document, at least one optical sensor and an optical imaging unit for imaging the document onto the at least one optical sensor. The at least one illumination device is coupled to an optical lighting unit which allows the document to be illuminated as homogeneously as possible. | 04-29-2010 |
20100110505 | ILLUMINATING DEVICE AND IMAGE READING APPARATUS - An illuminating device includes a linear light source mounted on a mounting surface of a board, with a plurality of light-emitting elements being arrayed thereon, for irradiating light toward an illuminating target, a white reflecting surface provided in a planar shape parallel to an optical axis of the linear light source on a surface including the mounting surface, to reflect the light from the linear light source, and a mirror surface formed in a planar shape that reflects the light from the linear light source and reflected light from the white reflecting surface. The linear light source, the white reflecting surface, and the mirror surface are arranged such that a third plane crosses a first plane on the illuminating target side than a second plane, and 0°<θ | 05-06-2010 |
20100118355 | Image reading apparatus - To provide an image reading apparatus capable of reading original document images while performing control for blinking a line light source in the apparatus without causing a change in the hue of read data of the documents, the image reading apparatus is to apply light to an original document, read the reflected light, and thereby acquire image data of the document, and has a line light source for applying light to an original document, driving means for moving the document or a carriage installed with the line light source, a line sensor for receiving the reflected light of the document moving in the sub-scanning direction relatively to the carriage to convert into image data, and control means for performing control for blinking the line light source, control for driving the driving means, and control for capturing the image data from the line sensor, where the control means adjusts a light quantity of the line light source by controlling the number of times of lighting signals with a predetermined lighting time width. | 05-13-2010 |
20100128330 | IMAGE SENSOR UNIT AND METHOD OF MANUFACTURING THE IMAGE SENSOR UNIT, AND IMAGE-READING APPARATUS - In a frame | 05-27-2010 |
20100134855 | Scanner and shading correction method - A scanner includes an image scanning mechanism, a foreign object location detector, a foreign object location storage, a correction processor, and a shading correction processor. The foreign object location detector detects a pixel at a location of a foreign object adhered to an optical mirror of the image scanning mechanism by use of a first reference image data obtained by scanning a white reference plate by the image scanning mechanism at an initial operation after power-on of the scanner. The foreign object location storage stores a location of the pixel at the foreign object location in the main scanning direction detected by the foreign object location detector. The correction processor corrects a waveform in a predetermined range including the foreign object location detected by the foreign object location detector so as to be formed in a trapezoidal shape with respect to a second reference image data obtained by scanning the white reference plate by the image scanning mechanism when scanning an original. The shading correction processor performs a shading correction to an original image data by use of the second reference image data corrected by the correction processor. | 06-03-2010 |
20100134856 | METHOD FOR SELECTING AND ADJUSTING SCANNER ILLUMINANT - A scanner includes a first illuminant device having a first power associated therewith, and a second illuminant device having a second power associated therewith. The first power is greater than the second power, and each of the first illuminant device and the second illuminant device is configured to selectively scan a document. The scanner is configured to select one of the first illuminant device and the second illuminant device based, at least in part on, a level of power supplied to the scanner via a power source, and perform a single scan of the document using only the selected one of the first illuminant device and the second illuminant device. | 06-03-2010 |
20100142008 | Image Scanning Apparatus and Methods - Method and image scanning apparatus comprising an image capture unit having an illumination assembly for generating input light; a printed circuit board mounted to the image capture unit, a cooling unit generating an airflow which cools the illumination assembly of the image capture unit as well as the critical components mounted on the printed circuit board and the optical components of the image capture unit; and an adjustable baffle member moveably mounted to the frame of the image scanning apparatus for controlling the path of the airflow relative to the lamp. The cooling unit comprises at least one fan with the fan generating airflow for cooling the lamp of image capture unit. The baffle member is adjustable to control the airflow generated by the fan such that the airflow generated by the fan is redirected downward and passes the airflow under the image capture unit, thereby effectively and evenly cooling the lamp and redirecting contaminants to the end of the image scanning apparatus enclosure opposite the image capture unit. | 06-10-2010 |
20100142009 | IMAGE READING APPARATUS - When a light source is in off state, a gray level of image data on a pixel-by-pixel basis is generated as a first black level and an average of gray levels of a portion of the image data corresponding to optical black image portions of sensor chips is generated as a second black level. After that, when an image of an original is read, an average of gray levels of the black image data on a line-by-line basis is generated as a third black level. The first black level is subtracted from a gray level of the image data on a line-by-line basis (an offset correction), and a difference between the third black level and the second black level is added to a gray level of the image data after being subjected to the subtraction on a line-by-line basis. | 06-10-2010 |
20100182656 | SCANNING SYSTEM HAVING BRIGHTNESS COMPENSATION APPARATUS AND METHOD THEREOF - A scanning system having a brightness compensation apparatus and method thereof are described. The brightness compensation apparatus includes a statistics window control unit, a brightness statistics logic unit, and a comparing logic unit. The statistics window control unit sets a statistics window setting area. The brightness statistics logic unit generates the current brightness statistics data corresponding to the current page. The comparing logic unit compares the current brightness statistics data with brightness target value to determine whether the brightness compensation apparatus compensates the brightness of next page based on the comparison result and/or image gain of the current page for adjusting the brightness of the scanning system according to the compared result between the brightness statistic data and the brightness target value. | 07-22-2010 |
20100195166 | Image Reading Apparatus, and Its Manufacturing Method - An image reader A | 08-05-2010 |
20100195167 | IMAGE READING APPARATUS - An image reading apparatus includes: a document table; a light reception unit; light sources disposed such that positions at which the optical axes of the plurality of light sources cross a reception optical axis of the light reception unit are different from one another; and a read control unit. The image reading apparatus further includes: a light reception amount storage unit configured to store the light reception amount for each of distances; a distance calculation unit configured to calculate a distance between the placement surface and the document based on the light reception amount obtained by the read control operation for each light source by referencing the light reception amount stored in the light reception amount storage unit; and a correction amount determination unit configured to determine a correction amount based on the distance calculated by the distance calculation unit. | 08-05-2010 |
20100195168 | Image Illumination and Capture in a Scanning Device - Scanning devices and method of use that permit the capture of high resolution images of an original that is illuminated by a light source that is located outside of the optical field of view of an image detector. In one aspect, the image detector may be a monochrome sensor that sequentially captures different color plane images of an original that is illuminated by different colors. The different color plane images may be processed to generate a full color copy of the original. Light and images may be directed through tapered optical waveguides to minimize the volume of the scanning device. The image detector may include a first associated waveguide while the light source may include a second associated waveguide. | 08-05-2010 |
20100214632 | OPTICAL DETECTION APPARATUS, AND SHEET PROCESSING APPARATUS HAVING THE OPTICAL DETECTION APPARATUS - An optical detection apparatus includes a detector configured to detect image data in a predetermined reading area on a conveying path to convey the sheet, a first illuminator configured to intermittently emit an excitation light to a first illumination area including the reading area of the detector, a second illuminator configured to continuously emit an excitation light to a second illumination area which is continued with the first illumination area on the upstream of the first illumination area on the conveying path and which does not include the reading area of the detector, and a control unit configured to control the detector to detect image data of the sheet according to the emitting operation of the first illuminator. | 08-26-2010 |
20100220369 | Scanning System for Scanning an Object Surface, in Particular for a Coordinates Measurement Machine - Scanning system for scanning the surface ( | 09-02-2010 |
20100220370 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - An image reading apparatus includes: an image-signal output unit including plural light-emitting elements provided at equal intervals in a main scanning direction and a lens; and a driving unit configured to control electric currents applied to the light-emitting elements such that amounts of received light in the photoelectric conversion elements at both the ends in the main scanning direction supplement an amount of a light beam that is emitted from a peripheral area on a lens surface of the lens and decreases. | 09-02-2010 |
20100231990 | SCAN APPARATUS AND IMAGE FORMING APPARATUS - There is provided a scan apparatus in which a thickness of a red filter layer is a value except the integral multiple of a wavelength at which sensitivity of red photodiodes becomes maximum in a wavelength region of red light, a thickness of a green filter layer is a value except the integral multiple of a wavelength at which sensitivity of green photodiodes becomes maximum in a wavelength region of green light, and a thickness of a blue filter layer is a value except the integral multiple of a wavelength at which sensitivity of blue photodiodes becomes maximum in a wavelength region of blue light. | 09-16-2010 |
20100231991 | Image Reading Device - An image reading device includes: a light-source adjusting device, a storage, a first converting device and a determining device. The adjusting device adjusts brightness of the light source to the brightness corresponding to the one of a plurality of reading modes. The storage stores an reference adjusting value and converting information, the reference adjusting value being adjusted in a state where external light is not incident on a platen, the converting information being for converting the reference adjusting value of the reference mode into the reference adjusting value of another reading mode. The first converting device refers to the converting information and converts the reference adjusting value into the value of the selected reading mode. The determining device determines presence or absence of external light incident on the platen, comparing the converted reference adjusting value with the light-source adjusting value adjusted by the adjusting device. | 09-16-2010 |
20100238520 | ERECTING EQUAL-MAGNIFICATION LENS ARRAY PLATE, OPTICAL SCANNING UNIT, AND IMAGE READING DEVICE - An erecting equal-magnification lens array plate includes: a first lens array plate provided with a plurality of first lenses arranged systematically on a first surface of the plate and with a plurality of second lenses arranged systematically on a second surface opposite to the first surface; and a second lens array plate provided with a plurality of third lenses arranged systematically on a third surface of the plate and with a plurality of fourth lenses arranged systematically on a fourth surface opposite to the third surface. The first lens array plate and the second lens array plate form a stack such that the second surface and the third surface face each other to ensure that a combination of the lenses associated with each other form a coaxial lens system, the plate receiving light from a document G facing the first surface and forming an erect equal-magnification image of the document G on an image plane facing the fourth surface. The second lenses are arranged so as to create no gaps between adjacent lenses. | 09-23-2010 |
20100238521 | SCANNER FOR SCANNING ITEMS MARKED WITH TAGS - A scanner for scanning items marked with tags is disclosed. The scanner has a laser for producing a beam, a mirror assembly to re-direct the beam, a deflecting arrangement to receive the re-directed beam, the deflecting arrangement including a horizontal deflector, a vertical deflector and a pair of synchronised drivers to drive the deflectors, a steering mirror to steer the deflected beam, a scanning mirror to direct the beam onto the tag to be scanned, and a light collection system to collect light reflected by the tags. | 09-23-2010 |
20100245942 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD - A plurality of LED circuits are each configured having white LEDs serially connected therein, and the white LEDs are arranged in alternate main scanning direction positions for each of the LED circuits. When any of these LED circuits has failed, an output light power of white LEDs of LED circuits that have not failed is increased by a light power control section, thereby compensating an extinguished amount of the failed LED circuit. | 09-30-2010 |
20100245943 | ILLUMINATION DEVICE - An illumination device comprising: an optical guide for receiving light emitted from a light source and guiding the light by repetitive transmission and reflection; a reflective member for reflecting light transmitting in the optical guide to an outside of the optical guide within the optical guide; a supplemental reflective member for reflecting light transmitting the reflective member and light leaked from the optical guide while evading the optical guide to an inside of the optical guide, transmitting the reflective member and light leak. | 09-30-2010 |
20100253983 | IMAGE READING APPARATUS AND CONTROLLING DEVICE THEREOF, PROGRAM, AND CONTROLLING METHOD - Provided is a controlling device for controlling an image reading apparatus that optically reads an original, which includes a lighting controlling section that controls a first lighting section and a second lighting section which are the first and second lighting sections provided in the image reading apparatus, form each of the linear light emitting regions, and irradiate the original with light from directions intersecting with each other, and the lighting controlling section includes a first mode unit that controls the first and second lighting sections in a first mode in which one of the first and second lighting sections irradiates the original, a second mode unit that controls the first and second lighting sections in a second mode in which both of the first and second lighting sections irradiate the original. | 10-07-2010 |
20100259800 | IMAGE-READING APPARATUS, IMAGE-READING METHOD AND PROGRAM - An image-reading apparatus that optically reads an original, includes: an illuminating section that illuminates the original with light; an imaging unit that creates pixel data on the basis of reflected light reflected from the original; a moving unit that moves the illuminating section and the imaging unit relative to the original in steps of a fixed distance in a scanning direction that points from one end of the original toward another end of the original; an illumination mode controller that, for each unit step of movement out of one entire scanning movement in the scanning direction performed by the moving unit, controls the illuminating section so that the illuminating section is made to operate in each of a plurality of illumination modes. | 10-14-2010 |
20100277775 | ILLUMINATOR, AND SPECTRAL APPARATUS AND IMAGE READING APPARATUS THEREWITH - Provided is an illuminator including a light source unit having a light emitting surface, and a light guiding member guiding a light beam to an original disposed on an original plate. An intersection of a center axis of a light emitting surface and the original plate is separated from a reading position of the original in a sub scanning direction, the light guiding member includes an incident surface to which the light beam emitted from the light source unit is incident, a reflection surface that reflects the incident light beam, and an exiting surface exiting the incident light beam and the reflected light beam, and in the sub scanning section, the light beam having the highest light intensity in the light beams from the light source unit is deflected at the incident surface toward the reading position of the original with respect to the center axis. | 11-04-2010 |
20100284047 | DOCUMENT READING APPARATUS - A document reading apparatus includes an irradiation unit configured to irradiate a document reading position with visible light and infrared light, a reading unit configured to read an image of visible light and an image of infrared light reflected from the document on the document reading position, and an extraction unit configured to extract a transparent toner image on a document based on the visible light image and the infrared light image read by the reading unit. | 11-11-2010 |
20100290095 | LIGHT SOURCE APPARATUS, LIGHT IRRADIATING APPARATUS PROVIDED WITH SAME LIGHT SOURCE APPARATUS, IMAGE READING APPARATUS PROVIDED WITH SAME LIGHT IRRADIATING APPARATUS, AND IMAGE FORMING APPARATUS PROVIDED WITH SAME IMAGE READING APPARATUS - In one embodiment of a semiconductor apparatus of the present invention, a plurality of light-emitting elements provided with a light-emitting face are disposed at intervals in a line on a surface of a substrate, and serve as a light source apparatus that emits irradiating light forward from the light-emitting face along the surface of the substrate, and on a forward side of the light-emitting face in the surface of the substrate, a light reflection suppression area is formed extending forward with a width less than the width of the light-emitting face from a lower edge of the light-emitting face. | 11-18-2010 |
20100296135 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD - An image reading apparatus of the present invention includes a document placing unit on which a document is placed, alight source unit in which light sources are arrayed in a depth direction, a light source drive unit that drives the light sources, and a light source control unit that controls so that the light sources are divided into a plurality of groups to be driven. An image sensor is provided at a position capable of receiving light emitted from the light sources and reflected by the document on the document placing unit. Further, the document size is detected through detection of a position of an edge of the document from an output signal from the image sensor. Then, the light source drive unit is controlled so that, when the image is to be read, the light sources are activated to illuminate the document. | 11-25-2010 |
20100302608 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS CAPABLE OF SUPPRESSING DETERIORATION OF IMAGE QUALITY - A light source lights up at luminance associated with supplied electric current. An electric-current supplying section supplies the light source with electric current. A control section controls the electric-current supplying section. A reading section reads at least one sheet of an original document on which light from the light source is irradiated and generates image data. A determining section determines whether a change in the electric current flowing through the light source is large, based on a predetermined criterion, during a period when the reading section reads the at least one sheet of the original document. When the reading section reads the at least one sheet of the original document, the control section increases electric current supplied to the light source if the determining section determines that the change is large relative to electric current supplied to the light source when the determining section determines that the change is small. | 12-02-2010 |
20100315690 | IMAGE READING APPARATUS AND METHOD FOR CONTROLLING THE SAME - An image reading apparatus capable of reading documents includes a reading unit including a light emitting element, a mechanism configured to move the reading unit, and a control unit configured to control the reading unit and the mechanism both to carry out reading by turning on the light emitting element and moving the reading unit and to temporarily stop moving the reading unit upon occurrence of a predetermined factor. The control unit sets a first current value which is caused to flow through the light emitting element when reading is carried out and sets a second current value which is less than the first current value and which is caused to flow through the light emitting element when the reading unit is temporarily stopped. | 12-16-2010 |
20100315691 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS PROVIDED WITH SAME - In one embodiment, in a state in which a first scanning unit is positioned at a reading position below an original reading glass and a second scanning unit is positioned such that an original is not caused to travel between the original reading glass and a reading guide plate of a first reading portion, control is performed to selectively turn on or turn off each LED of an illumination portion of the first scanning unit to produce a shadow of paper dust, and detection is performed on variation in an output of a CCD corresponding to the shadow of the paper dust. | 12-16-2010 |
20100328733 | Tetra-mirror multi-reflection scanning module - The present invention discloses an image scanning module having four reflecting mirrors, the image scanning module comprises at least one source, four reflection mirrors, a pickup lens, an image sensor and a frame, wherein at least one of reflection mirror is multi-reflection along the optical path, satisfies the specific optical conditions. The TTL (total tracking length) can only be adjusted through the arrangement of the distance of the four reflecting mirrors and will not need to adjust through the angle of the four reflecting mirrors. Accordingly, the benefit of present invention not only increases the field of depth by increasing the total length of optical path in the limited space, but also be convenient to assemble respectively to different total tracking length. | 12-30-2010 |
20110007368 | IMAGE SENSOR UNIT AND IMAGE READING APPARATUS USING THE SAME - In a frame ( | 01-13-2011 |
20110013235 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device includes: a plurality of light sources that are arranged in a row and emit light; a light guide body that guides the light emitted from the plurality of light sources to a reading portion and transmits light reflected from the reading portion; a carriage having the plurality of light sources and the light guide body; and a reading unit that receives the light reflected from the reading portion and reads an image on the reading portion. | 01-20-2011 |
20110013236 | IMAGE READING DEVICE AND IMAGE FORMING DEVICE - An image reading device including: plural point light sources, each point light source being disposed at a placement interval F in a first direction; a light guiding body having an exit surface, incident light from the plural light sources exiting from the exit surface to a surface to be read, and a width S of the exit surface, in a second direction intersecting with the first direction, being smaller than the placement interval F; a light diffusing portion which diffuses light exiting from the exit surface, at an angle that is greater in the first direction than in the second direction; and a reading portion which receives light reflected at the surface to be read, and reads an image at the surface to be read, is provided. | 01-20-2011 |
20110013237 | IMAGE READING APPARATUS AND LINEAR LIGHT SOURCE UNIT - An image reading apparatus includes: a light emitting element array that includes plural light emitting elements arranged in line in a first scan direction of a document; a guiding unit that guides light entering from the light emitting element array, and that emits the light toward a reading position of the document while diffusing the light; a light receiving unit that receives reflected light from the reading position irradiated with the light from the light emitting element array through the guiding unit; and a scan unit that moves the reading position of the document in a second scan direction, the reading position being a position read by the light receiving unit. | 01-20-2011 |
20110013238 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, LIGHT QUANTITY ACQUISITION METHOD AND COMPUTER READABLE MEDIUM - An image reading apparatus includes: an image reading unit including a light source and a light receiving unit, and being capable of reading an image of a document sheet with predetermined plural reading conditions; a first light quantity information acquiring unit acquiring first light quantity information on a quantity of light emitted from the light source to a first white reference plate and received by the light receiving unit, for each reading condition; a second light quantity information acquiring unit acquiring second light quantity information on a quantity of light emitted from the light source to a second white reference plate and received by the light receiving unit, for fewer reading conditions than all the plural reading conditions; and a third light quantity information acquiring unit acquiring the second light quantity information for reading conditions other than the fewer reading conditions by using the acquired first light quantity information. | 01-20-2011 |
20110038019 | IMAGE READING APPARATUS - An image reading apparatus includes a light source, an imaging optics system, an image pickup device unit, a memory, and a processor. The imaging optics system condenses scattered light reflected on an object to be imaged to form condensed light as an image. The imaging optics system includes plural cells arranged in a main scanning direction and each of which is an independent imaging optics system. Each of the cells includes a telecentric optics system at the document side. Two rows of cells are arranged in a sub-scanning direction. The cells in the rows are arranged zigzag in the main scanning direction to complement a formed image by the cells in the sub-scanning direction. The image pickup device unit is arranged to correspond to each cell. The processor can form a document image by reconstructing and combining image information stored in the memory into an image. | 02-17-2011 |
20110043873 | IMAGE READING APPARATUS, CONTROL METHOD THEREFOR, AND PROGRAM - There is provided an image reading apparatus and a control method therefor, which can suppress the influence of external light, and obtain an appropriate read image. To accomplish this, the image reading apparatus executes a Light-on reading processing for turning on an LED and causing a sensor to read an original document on a original platen at the first resolution, and a Light-off reading processing for turning off a light source and causing the sensor to read the original document on the original platen at the second resolution. In accordance with the influence of external light in an Light-off mode image read by the Light-off reading processing, the image reading apparatus removes the influence of external light in a Light-on mode image read by the Light-on reading processing. | 02-24-2011 |
20110043874 | IMAGE READING APPARATUS, IMAGE FORMATION APPARATUS, IMAGE READING METHOD, IMAGE FORMATION METHOD, PROGRAM FOR CAUSING IMAGE READING METHOD TO BE EXECUTED, AND PROGRAM FOR CAUSING IMAGE FORMATION METHOD TO BE EXECUTED - In the so-called sky-shot in which reading is performed with a platen cover ( | 02-24-2011 |
20110051203 | Laptop computer with scanning capability - A laptop computer is comprised of a base portion, a display portion, and a scanning/illuminating mechanism. The scanning/illuminating mechanism illuminates a display of the display portion of the laptop computer and illuminates a document during scanning of the document. | 03-03-2011 |
20110051204 | IMAGE-READING APPARATUS - An image-reading apparatus includes: a light dividing unit that divides irradiated light so that a part of the light having a first wavelength is diffracted, and a part of the light having a second wavelength is transmitted; a first light measuring unit that measures an intensity of light entering into a first measuring area, and outputs first measurement information indicating the measured intensity; a second light measuring unit that measures an intensity of light entering into a second measuring area, and outputs second measurement information indicating the measured intensity; an image-forming unit that forms an image of a subject for reading in the first measurement area, and that forms a virtual image in the second measurement area, using light diffracted by the light dividing unit; and a generation unit that corrects the first measurement information on the basis of the second measurement information. | 03-03-2011 |
20110080624 | Light scanning unit and electrophotographic image forming apparatus using the same - A light scanning unit and an electrophotographic image forming apparatus using the same. The light scanning unit uses a reduced number of optical components by forming an optical unit disposed between a light source and an optical deflector by using only a single lens and ensures optical and mechanical properties by having an appropriate main/sub scanning magnification ratio. | 04-07-2011 |
20110085213 | Method and apparatus for controlling light source in image scanning apparatus - The method to control a light source in an image scanning apparatus includes emitting light onto a reference surface having a predetermined reflectivity from a light source, detecting a shading level representing an intensity of the light reflected from the reference surface, and controlling the light intensity from the light source by using the shading level and the reference level. | 04-14-2011 |
20110085214 | Image scanning device, image forming apparatus, and light source failure detection method - An image scanning device includes lighting circuits; a light source including light-emitting elements arranged in a line such that the light-emitting elements connected in series to the same lighting circuit are not positioned adjacent to each other; a reflecting part; a photoelectric conversion unit photoelectrically converting reflected light from the reflecting part; a lighting control unit selectively turning on one of the lighting circuits; a memory storing an area information table containing information on main-scanning areas of the photoelectric conversion unit in association with identification information of the lighting circuits; and a failure determining unit identifying the main-scanning areas corresponding to the identification information of the turned-on lighting circuit by referring to the area information table and comparing intensities of the reflected light entering the identified main-scanning areas with a first threshold to determine whether the light-emitting elements connected to the turned-on lighting circuit are at fault. | 04-14-2011 |
20110090544 | IMAGE READER AND IMAGE FORMING APPARATUS - An image reader includes a light source, a light reception element, an optical member, and a hold body. The light source applies light to a document. The light reception element receives reflected light reflected by the document. The optical member introduces the reflected light into the light reception element. The hold body has an entry part which is disposed in a portion not contributing to image formation of the reflected light on the light reception element through the optical member. The hold body holds the optical member. | 04-21-2011 |
20110096374 | Image Reading Apparatus and Image Forming Apparatus - An image reading apparatus includes light emitting elements, a circuit board, a light guide member, a support member and a heat radiation member and a reading portion. The light emitting elements emit light for illuminating an original. The light emitting elements are installed on the circuit board. The light of the light emitting elements enters into the light guide member. The support member supports the circuit board and the light guide member. The heat radiation member has a heat transmission portion to which heat generated in the light emitting elements is transmitted, and a heat radiation portion that radiates the heat conducted to the heat transmission portion. The reading portion reads an image of the original with reflection light generated in such a way that the light exiting from the light guide member is reflected from the original. | 04-28-2011 |
20110096375 | IMAGE READING APPARATUS - An image reading apparatus, which reads an image on an original, including: a light source extending along a main scanning direction to illuminate the original; a plurality of line sensors configured to receive light reflected from the original and to output light intensity signals; a storage unit configured to store reference data; and a determination unit configured to obtain determination data regarding hue based on a light intensity signal output from one of the plurality of line sensors that receive light reflected from a reflective reference member illuminated by the light source and a light intensity signal output from another of the plurality of line sensors that receive light reflected from the reflective reference member illuminated by the light source and to determine a hue balance of the light source based on the determination data and the reference data stored in the storage unit. | 04-28-2011 |
20110102863 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME - In one embodiment, an image reading apparatus has a light source configured with a plurality of light-emitting elements disposed in a row in a main scanning direction that irradiate light toward an original, and a photoelectric conversion element that receives light reflected from the original, an output light amount from the light-emitting elements can be adjusted, and a state of bright spots due to repetition of light-dark in the main scanning direction on a light irradiation face of the original due to the plurality of light-emitting elements is determined, and the output light amount from the light-emitting elements is adjusted based on the determination result of the state of the bright spots. | 05-05-2011 |
20110128594 | EXPOSURE HEAD AND IMAGE FORMING APPARATUS - Disclosed is an exposure head including a light emitting element array including light emitting elements disposed in a first direction, a light blocking member including an aperture stop through which lights emitted from the light emitting elements pass, and an image forming optical system that makes an image by using the lights having passed through the light blocking member. An absolute value of a magnification in the first direction of the image forming optical system is equal to or more than 0.7 times and is equal to or less than 0.8 times. | 06-02-2011 |
20110149356 | IMAGE CAPTURING DEVICE - An image capturing device includes: a first base, including a first side edge and a second side edge opposite to each other; a first light-emitting element, located at the first side edge, for emitting a first light source to illuminate a document; a first compensator, located at the second side edge; a first sensing element, located between the first light-emitting element and the first compensator; a first transparent sheet, covering the first compensator; a second base, including a third side edge and a fourth side edge opposite to each other; a second light-emitting element, located at the third side edge, for emitting a second light source to illuminate the document; a second compensator, located at the fourth side edge; a second sensing element, located between the second light-emitting element and the second compensator; and a second transparent sheet, covering the second compensator. | 06-23-2011 |
20110149357 | IMAGE READING APPARATUS, CONTROL METHOD OF IMAGE READING APPARATUS, AND STORAGE MEDIUM - A method includes reading an image of a document obtained by a reading unit exposing the document to light with an exposure unit, causing the reading unit to perform first reading processing for reading first information obtained by causing the exposure unit to perform exposure with a first light amount, and second reading processing for reading second information obtained by causing the exposure unit to perform exposure with a second light amount that is smaller than the first light amount while no document is placed at a reading position of the reading unit, and detecting a foreign matter existing at the reading position according to a difference between the first and second information. | 06-23-2011 |
20110157661 | SCANNER MODULE AND IMAGE SCANNING APPARATUS EMPLOYING THE SAME - Disclosed are a scanner module and an image scanning apparatus employing the same. The scanner module includes a light source generating light to be irradiated onto an object and a light guide member extending in correspondence with a width of the object such that the light source is installed on the light guide member. The light guide member has a reflective surface for reflecting the light generated from the light source, an exit surface for radiating the light, which is reflected from the reflective surface, toward the object, and a plurality of guide surfaces that guide the light toward the exit surface by totally reflecting the light when a traveling direction of the light reflected from the reflective surface deviates from the exit surface. The light is effectively guided into the exit surface without light loss, so that the amount of light radiated from the light guide member is increased and desired light distribution is achieved by adjusting the direction and location components of the light radiated from the light guide member. | 06-30-2011 |
20110176184 | IMAGE SCANNER - An image scanner includes a light-pervious supporting plate, an enclosure, an image sensor, several light sources, and two or four light guide plates. The supporting plate supports an original to be scanned. The enclosure and the supporting plate cooperatively define a receiving space. The image sensor is received in the receiving space, and has a receiving surface. The two, four, or six light sources emit light. The light guide plates each include a light incident surface and an output surface. The light incident surface is configured for receiving light from the respective light sources. The output surface is configured for emission of surface light to scan the original on the supporting plate. In this manner, the surface light is reflected by the original to the receiving surface of the image sensor, thus an image of the original is captured. | 07-21-2011 |
20110181923 | SCANNING APPARATUS - A scanning apparatus includes a scanning module. The scanning module includes plural light emitting diodes, a porous reflective plate with plural openings, and a reflective element. When the scanning apparatus starts scanning a document, the light beams emitted by the light emitting diodes are directed to the porous reflective plate. A portion of light beams reflected by the porous reflective plate are defined as reflected light beams. The light beams penetrating through the openings are diffracted to be diffractive penetrated light beams. The reflected light beams reflected by the reflective element and the diffractive penetrated light beams are projected on the document, so that enhanced uniform illumination efficacy is achieved. | 07-28-2011 |
20110205601 | IMAGE PROCESSING APPARATUS AND IMAGE READING APPARATUS - An image processing apparatus including, a light source for reading for applying light onto an original to read, a light source for erasing for applying light of specific wavelength onto the original to decolorize image area, having been printed with color-changing agent having characteristic to become colorless by the light, a reading section for receiving reflected light from the original, an output section for outputting image data of the original, and a control section configured to compare first image data obtained by applying light from the light source for reading to the original, and second image data obtained by applying light from the light source for reading again to the original after applying light from the light source for erasing to the original, to determine whether the agent has been used in the image, and control at least either the reading operation or the output operation based on that determination. | 08-25-2011 |
20110205602 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS - An optical scanner includes: a light reflecting section having light reflectivity; a movable section which includes the light reflecting section and can be displaced; two link sections connected to positions of ends of the movable section, the positions facing each other; a supporting section supporting the link sections; and a displacement providing section turning the two link sections, wherein each link section includes a turnable drive section, and a shaft section connecting the movable section and the drive section and bending in a thickness direction of the movable section by turning of the drive section. | 08-25-2011 |
20110211235 | Image Reader - An image reader is provided, which includes a reference position determining unit configured to, in a state where a bright area and a dark area are formed on a reflection surface when a light projecting unit projects light toward a part of the reflection surface, receive the light reflected from the reflection surface with a light receiving portion of a reading unit while restricting a light emitting portion of the reading unit from emitting light, detect a position of the bright area and a position of the dark area in a main scanning direction, and determine a reference position in the main scanning direction based on the detected positions of the bright area and the dark area. | 09-01-2011 |
20110228353 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - An image reading apparatus includes an array substrate in which a plurality of point light sources is mounted along the main scanning direction, a light guide member disposed on a surface of the array substrate that mounts the plurality of point light sources, and guiding light from the plurality of point light sources to the document surface, a frame for fixing the light guide member and the array substrate, a positioning unit that determines the positional relationship of the frame with the light guide member and the array substrate in a configuration in which the incident surface of the light guide member is in proximity to or in contact with the plurality of point light sources; and an image reading unit that uses reflected light when illuminating light from the plurality of point light sources through the light guide member onto the document surface to thereby read the document image. | 09-22-2011 |
20110228354 | FORM READING DEVICE AND FORM DETECTING METHOD - A document reading device ( | 09-22-2011 |
20110228355 | Image forming apparatus - An image forming apparatus includes a latent image carrier having a surface that moves, an optical writing unit that scans and emits light in a main scanning direction, a developing unit, a first storage unit, a second storage unit, and a control unit. The first storage unit stores first light intensity adjustment data for adjusting the intensity of light emitted from the optical writing unit such that the deviation of the emission intensity of the light in the main scanning direction due to characteristics of the optical writing unit is corrected. The second storage unit stores second light intensity adjustment data which can be set at each irradiation point in the main scanning direction and is for adjusting the intensity of the light emitted from the optical writing unit such that the deviation of image density at an arbitrary irradiation point in the main scanning direction is corrected. | 09-22-2011 |
20110235136 | ILLUMINATION APPARATUS, IMAGE READING APPARATUS, AND IMAGE FORMING APPARATUS - An illumination apparatus includes a light source that generates light used for reading an image and a light guide body which extends in a predetermined direction and onto which the light from the light source is incident. The light guide body includes a pair of first faces that reflect the light so as to cause the light to direct to an image reading region from directions different from one another, a second face which emits the light directing from the first faces toward the image reading region and onto which the light reflected from the image reading region is incident, and a third face which emits the light that is incident from the second face and passes between the pair of first faces. | 09-29-2011 |
20110242619 | IMAGE READER - An image reader is provided, which includes a light-emitting-timing setting unit configured to divide a non-light-emitting time during which none of light sources emits light in a predetermined reading period into a plurality of segmental non-light-emitting times and set a light-emitting moment separately for each light source as a moment to emit the light in the predetermined reading period, such that the segmental non-light-emitting times are arranged in a dispersed manner in the predetermined reading period, and a controller configured to control each light source to emit the light during a light-emitting time determined separately for each light source at the light-emitting moment set by the light-emitting-timing setting unit. | 10-06-2011 |
20110261420 | IMAGE READING APPARATUS - An image reading apparatus includes a light source unit, an image sensor, and a light guiding unit at least including a light reflector. The light guiding unit may include a first masking shield and a second masking shield. The light source unit irradiates light toward an original. The image sensor picks up an image of the original based on reflected light of the light by the original. The light guiding unit is provided on an opposite side to the light source unit to cause a part of the light to directly enter into the image sensor, when the original is not fed to the image sensor. The light guiding unit reduces light incident to the image sensor, among the light and light having transmitted through the original, at the time of picking up the image of the original by the image sensor. | 10-27-2011 |
20110273750 | LED LIGHT GUIDE WITH INTEGRAL IR FILTER - Various embodiments provide illuminators and related scanner illuminating systems, wherein the illuminators can include one or more light guides with each including an IR filter and/or an IR-absorbing coating for removing an IR component from the light introduced in the light guide. | 11-10-2011 |
20110273751 | SINGLE LED DUAL LIGHT GUIDE - Various embodiments provide illuminators and related scanner illuminating systems, wherein the illuminators can include a light source having one or more LEDs coupled to a plurality of light guides through one or more light splitters such that light emitted from the light source can be split into each of the plurality of light guides. | 11-10-2011 |
20110273752 | ILLUMINATING APPARATUS, IMAGE READING APPARATUS, AND IMAGE FORMING APPARATUS - In a light source unit ( | 11-10-2011 |
20110286052 | IMAGE READING UNIT AND OVERHEAD IMAGE READING DEVICE - An image reading unit includes an image reading section that reads an image of a document in a one-dimensional direction by one-dimensionally aligned imaging elements, a light source that irradiates an image reading region by the image reading section with light, and a rotation head that holds the image reading section and the light source in a manner that the image reading section and the light source are rotatable relative to the document about a rotation axis which is parallel to an alignment direction of the imaging elements. | 11-24-2011 |
20110286053 | IMAGE SCANNING APPARATUS AND IMAGE FORMING APPARATUS - According to one embodiment, an image scanning apparatus includes: a document table on which an original document is stacked; a substrate; plural first light emitting elements located on one surface of the substrate, the first light emitting elements each emitting light for irradiating the original document on the document table; and plural second light emitting elements located on the other surface of the substrate, the second light emitting elements each emitting light for irradiating the original document on the document table. | 11-24-2011 |
20110286054 | READING HEAD - According to one embodiment, a reading head includes: a carriage configured to move in a sub-scanning direction with respect to a document table glass; a first light source provided to be movable integrally with the carriage and configured to illuminate a reading target position on the document table glass from an angle tilting to one side in the sub-scanning direction with respect to a reading optical axis extending in a normal direction in the reading target position on the document table glass; and a second light source provided to be movable integrally with the carriage and configured to illuminate the reading target position from a tilting angle larger than the angle of the first light source to the other side in the sub-scanning direction with respect to the reading optical axis and from a position further apart from the reading target position than the first light source. | 11-24-2011 |
20110292470 | IMAGE SCANNING DEVICE, IMAGE FORMING APPARATUS INCLUDING THE SAME, AND METHOD OF CONTROLLING IMAGE QUALITY OF IMAGE SCANNING DEVICE - An image scanning device, an image forming apparatus including the image scanning device, and a method of controlling image quality in the image scanning device are provided. The image scanning device includes a document board on which documents to be scanned are placed, a scanning unit which is installed on a lower portion of the document board to be linearly reciprocated, and comprises a scanner including a light guide for irradiating light to the documents, and light emitting devices that are separated from both ends of the light guide and irradiate light, and an image sensor for receiving the light emitted from the scanning unit, wherein, loss of the light emitted from the light emitting devices is compensated for by increasing intensity of electric current supplied to the light emitting devices as a distance between the light emitting devices and the light guide increases. | 12-01-2011 |
20110292471 | Optical Scanner - An optical scanner includes: a light source; a light deflector configured to deflect a light beam from the light source in a main scanning direction; a scanning lens through which the light beam having been deflected by the light deflector passes; a beam detector configured to detect the light beam; a mirror disposed between the light deflector and the scanning lens in an optical axis direction of the scanning lens and configured to reflect the light beam having been deflected by the light deflector toward the beam detector; and a wall portion configured to cover one end face of the mirror that faces the scanning lens, wherein the surface of the wall portion facing the scanning lens is tilted with respect to a sub-scanning direction orthogonal to the main scanning direction. | 12-01-2011 |
20110299142 | OPERATION DEVICE AND IMAGE READING APPARATUS - A graphic that indicates a switch is formed on a panel at a location corresponding to a first light guide element. A character to be displayed via the panel is formed on a second light guide element. The first light guide element is supported on a substrate, in close contact with an electrode, via a sheet-like shaped attaching member, and the second light guide element is supported by a base material without being supported on the substrate. | 12-08-2011 |
20120002246 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND SIZE DETECTING METHOD - According to an embodiment, an image reading apparatus includes: a light emitting body configured to emit light at illuminance lower than illuminance in reading an original document; a sensor configured to detect opening and closing of a cover; an image pickup element configured to pick up an image of the original document, on which the light from the light emitting body is irradiated, if the cover is open; and a control and determining section configured to turn on the light emitting body if the cover is opened and specify a pixel having a value exceeding a threshold from the picked-up image to determine the size of the original document. | 01-05-2012 |
20120002247 | IMAGE SCANNING APPARATUS AND CONTROL METHOD OF DOCUMENT SIZE DETECTION LIGHT SOURCE - A first LED that is one of a plurality of LEDs arranged in the main scanning direction is turned on, and the presence of a document on a document table glass is determined by detection of reflected light from the document using a CCD sensor, and a second LED other than the first LED in addition to the first LED among the plurality of LEDs is turned on when it is determined that a document is placed on the document table glass, and the size of the document on the document table glass is determined based on a scanning result of the CCD sensor on the reflected light from the document caused by illumination from the first and the second LEDs and a detection result of a reflective photosensor. | 01-05-2012 |
20120002248 | LIGHT EMITTING DEVICE AND IMAGE SCANNING APPARATUS - There is a light emitting device including a light source which generates light and of which the quantity of light emission changes according to a driving current, a driving circuit which runs the driving current to the light source to drive the light source, and a controller which controls the driving circuit and raises the driving current of the light source as the quantity of light emission from the light source decreases. | 01-05-2012 |
20120002249 | IMAGE SCANNING APPARATUS TO ALTERNATE SCANNING AND METHOD THEREOF - An image scanning apparatus including a plurality of scanning units which are disposed in positions which correspond to each other across the moving path of the scanning object, a user interface to receive input of a scanning command, a supply unit to make a scanning object to pass the scanning units, a controlling unit to control the plurality of scanning units to scan the scanning object alternately when the scanning object passes the plurality of scanning units, and a storage unit to store each image scanned in the plurality of scanning units. | 01-05-2012 |
20120002250 | FULL SPECTRUM RECOGNITION IMAGE SENSOR - The present invention discloses an image sensor, specifically a full spectrum recognition image sensor capable of reading and recognition image information for all of ultraviolet light, visible light and infrared light, which comprises a sensor substrate, photosensitive parts set on the sensor substrate and arranged in a straight line, a lens set on an upper portion of the sensor substrate, a light source set beside the lens, and a framework capable of accommodating said sensor substrate, said lens and said light source. A light-transmitting plate for carrying an original is set on an upper portion of the framework, the light source is a full spectrum light source capable of emitting light including ultraviolet light, visible light and infrared light, and the photosensitive parts on the sensor substrate consist of two parts, one part of which is a reflected light photosensitive part for receiving reflected light information generated by irradiating an original with the light source and another part of which is an exciting light photosensitive part for receiving exciting light information generated by irradiating an original with the light source. The image sensor of the present invention not only can recognize general color images, but also can recognize forgery-prevention images for various special purposes, and thus greatly improve the functions and the application field of the image sensor. | 01-05-2012 |
20120026559 | DOCUMENT READING APPARATUS - Provided is a document reading apparatus capable of surely detecting the document cover open/closed state and the open/close operation, without being affected by the external environment. This document reading apparatus includes a light source, a linier reading device and a document cover. In this document reading apparatus, the light amount value of the light received by the linear reading section while the light source is turned on, and the light amount value of the light received by the linear reading section when the light source is turned off are used to detect the open/closed state and the open/close operation of the document cover, wherein the preparation for printing starts when the document cover has shifted from the open state to the closed state. | 02-02-2012 |
20120057211 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING IMAGE READING DEVICE - A controller controls a scanner unit of an image reading device to read a section of an original document that corresponds to an image reading area specified by a user, when a user instruction for setting the image reading area is received. The controller causes the scanner unit to move to an image reading start position in a sub-scanning direction as specified by a user instruction. When a user instruction for starting image reading is received, the controller causes the scanner unit to start reading the section of the original document from the image reading start position. | 03-08-2012 |
20120092733 | DOCUMENT DETECTING APPARATUS, IMAGE FORMING APPARATUS AND DOCUMENT DETECTING METHOD - According to one embodiment, a document detecting apparatus includes a light-emitting element, a photoelectric conversion element, a light-emission controller and a detection processor. The light-emitting element projects light onto a detection position of a document. The photoelectric conversion element outputs an electric signal obtained by converting the light from the detection position of the document. The light-emission controller changes the light quantity of the light emitted by the light-emitting element. The detection processor detects the presence or absence of the document at the detection position of the document based on the presence or absence of a change of an output value corresponding to the change of the light quantity caused by the light-emission controller in an output value from the photoelectric conversion element. | 04-19-2012 |
20120099164 | IMAGE READER, IMAGE FORMING APPARATUS, COMPUTER READABLE MEDIUM FOR IMAGE ADJUSTMENT AND IMAGE ADJUSTING METHOD - An image reader includes a light source that irradiates light to a recording material on which an image is formed, a generation section that receives light reflected from the recording material and generates image information from the received light, and a processing section that extracts information corresponding to a window region of the recording material set in advance, as correction information, from the image information generated by the generation section when light from the light source is irradiated to the recording material on which the image is formed. | 04-26-2012 |
20120099165 | IMAGE FORMING APPARATUS - An image forming apparatus that forms an image includes: a photosensitive element; an optical scanning device that includes a light source, and scans a surface of the photosensitive element in a main scanning direction with light emitted from the light source to form a latent image; a developing unit that develops the latent image; a photosensitive element period detecting sensor that detects a rotation period of the photosensitive element; a density sensor that detects a density variation of an image developed by the developing unit, in a sub scanning direction; and a processing device that corrects a driving signal of the light source according to the image information, based on an output signal of the density sensor and an output signal of the photosensitive element period detecting sensor. | 04-26-2012 |
20120099166 | IMAGE READING APPARATUS, IMAGE READING METHOD, AND IMAGE FORMING APPARATUS - According to one embodiment, an image reading apparatus includes an original document table on which an original document is placed, a detection light source configured to be disposed above the original document table, an irradiation optical system configured to irradiate the original document table with light from the detection light source from a lower surface side of the original document table, and a light guiding optical system configured to guide light reflected from the original document table toward a light detector. | 04-26-2012 |
20120105923 | ROTATING PRISM SCANNING DEVICE AND METHOD FOR SCANNING - The present invention relates to a scanning device and a method for scanning. The scanning device comprises a first frame ( | 05-03-2012 |
20120113483 | BOOKLET READING DEVICE - A document reading device ( | 05-10-2012 |
20120113484 | IMAGE READING APPARATUS - An image reading apparatus includes an image reading member disposed in one of two regions that face each other with a transport path of a document therebetween, the image reading member being used for reading an image on the document, the image reading member including a light-receiving portion, a light-collecting member that collects reflected light reflected from the document onto the light-receiving portion, and a protruding portion that protrudes toward the transport path; and an opposing member disposed in the other of the two regions, the opposing member having a recess formed therein, the recess allowing the protruding portion of the image reading member to enter thereinto, the opposing member being disposed opposite the image reading member with the transport path therebetween. | 05-10-2012 |
20120113485 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - An optical scanning apparatus includes a light source, a rotating polygonal mirror, a scanning optical system, a detector, and a light emission controller. The light source includes plural light emitting elements. The rotating polygonal mirror is irradiated with light beams. While rotating, the rotating polygonal mirror reflects and deflects, in a deflecting direction, light beams emitted from light emitting elements in a first direction to propagate through one point in the deflecting direction substantially at the same time. The scanning optical system causes the reflected and deflected light beams to scan over an object. The detector detects the timing at which a light beam propagates through a detection point. When the light beams propagate through the detection point, the light emission controller causes light emitting elements in a row in the first direction other than light emitting elements at both ends of a projection plane to emit light. | 05-10-2012 |
20120120462 | ERECTING EQUAL-MAGNIFICATION LENS ARRAY PLATE, OPTICAL SCANNING UNIT, AND IMAGE READING DEVICE - An erecting equal-magnification lens array plate includes: a first lens array plate provided with a plurality of first lenses arranged on a first surface and a plurality of second lenses arranged on a second surface opposite to the first surface; and a second lens array plate provided with a plurality of third lenses arranged on a third surface and a plurality of fourth lenses arranged on a fourth surface opposite to the third surface. The first and second lens array plates form a stack such that the second surface and the third surface face each other. The erecting equal-magnification lens array plate receives light from a linear light source facing the first surface and forms an erect equal-magnification image of the linear light source on an image plane facing the fourth surface. An annular slope is formed around each second lens and each third lens. | 05-17-2012 |
20120127543 | IMAGE READING DEVICE - An image reading device includes: a CCD for reading an image on a document to output an image signal; a light source for switchingly emitting visible light and non-visible light; and lighting control means for controlling lighting periods of the light source. The lighting control means is adapted to perform control such that a first light source lighting period for applying non-visible light is longer than a second light source lighting period for applying visible light. The image reading device also includes splitting means for splitting the image signals outputted from the CCD into an image signal upon application of visible light and an image signal upon application of non-visible light. | 05-24-2012 |
20120140295 | PROCESSING APPARATUS CAPABLE OF SWITCHING OPERATION MODE AND COMPUTER READABLE DEVICE - A processing apparatus includes a photosensor, a processing unit and a control unit. The control unit detects a light receiving signal output from the photosensor during a first light emission period and obtains a first detection result, and makes first determination based on the first detection result by determining whether the processing unit can execute a function. The control unit detects the light receiving signal after a waiting period and obtains a second detection result. The control unit makes second determination based on the second detection result by determining whether the processing unit can execute the function. The control unit makes the second determination in a second mode that requires small consumption power, and according to determination in the second determination in the second mode that the processing unit can execute the function, the control unit keeps the second mode and makes the first determination. | 06-07-2012 |
20120162725 | Optical System for Scanners - Disclosed is an optical system for a scanner that includes at least one light source to illuminate a document, and a plurality of mirrors including a first mirror, a second mirror, a third mirror, a fourth mirror and a fifth mirror. The first mirror is positioned in a direction of the document to receive a light beam therefrom. The second mirror is adapted to receive the light beam reflected from the first mirror. The third mirror is positioned in proximity to the document and is adapted to receive the light beam reflected from the second mirror. The fourth mirror is positioned substantially opposite to the third mirror for receiving the light beam reflected therefrom. The fifth mirror is positioned adjacent to the second mirror and is adapted to receive the light beam reflected from the fourth mirror. The optical system further includes an imaging lens unit and an image sensor. | 06-28-2012 |
20120162726 | Illumination Assembly for a Scanner - An illumination assembly for a scanner according to one example embodiment includes a scan head frame. A thermally conductive heat sink component has an elongated base portion that is mounted along a longitudinal edge of the scan head frame and a protruding portion having a generally L-shaped structure that includes a first portion extending from the base portion and a second portion extending from and generally orthogonal to the first portion. A light source is coupled to the second portion of the protruding portion of the heat sink component. A first reflector is removably coupled to the first portion of the protruding portion of the heat sink component and is positioned directly in the optical path of the light source. | 06-28-2012 |
20120162727 | IMAGE SENSOR UNIT AND IMAGE READER - A protruding locking pawl is provided at an end of a light guide which corresponds to a first light input surface. A recessed locking portion is formed in a frame so that the locking pawl can be locked in the locking portion. A light blocking member is slidably loosely inserted into a position where the light blocking member covers a longitudinal end of the light guide which corresponds to a second light input surface. Even if expansion and contraction occurs in the longitudinal direction of the light guide, the design dimensions of a first gap A and a second gap B can be maintained; the first gap A is formed between the first light input surface and a first light source, and the second gap B formed between the second light input surface and a second light source. Therefore, possible leakage current can be prevented. | 06-28-2012 |
20120170083 | Image reading apparatus and controlling method thereof - An image reading apparatus which supports a both-side scan mode and a controlling method thereof. The image reading apparatus includes: an automatic paper transfer unit which automatically transfers a papers; a first scanning unit which comprises a first light source and scans a first side of the paper; a second scanning unit which comprises a second light source and scans a second side of the paper; and a controller which controls the first and second light sources to be alternately lit on a plurality of times within a cycle of a preset signal when the paper is transferred to the automatic paper transfer unit. | 07-05-2012 |
20120188615 | Image Forming Optical Element, Image Forming Optical Array, And Image Reading Device - An image forming optical element is provided, in which an incident unit having a first lens face to which a light beam output from an original document (object) is input, an output unit having a second lens face outputting the light beam, and a bent unit connecting the incident unit and the output unit at an angle are integrally formed into a transparent medium. The bent unit has a reflection face reflecting the incident light beam input to the first lens face and guiding the light beam to the second lens face. The incident light beam is collected at any of the incident unit, the bent unit, and the output unit to form an intermediate image of the object, and the intermediate image is formed on the output side of the second lens face to form an erection image of the object. | 07-26-2012 |
20120188616 | Image Reading Device - An image reading device includes a light source; a light guiding member; an imaging optical system that reflects the light, which faces a first direction from the object, in a second direction intersecting the first direction by a reflective plane disposed in the first direction of the object, that makes the light, which is reflected by the reflective plane, converge toward the second direction by an emission portion disposed in the second direction of the reflective plane, and that images an erect equal-magnification image of the object in the second direction of the emission portion; and an optical sensor that is disposed in the second direction of the emission portion of the imaging optical system, and detects the erect equal-magnification image that is imaged by the imaging optical system, in which the light guiding member is disposed at an object side of the emission portion in the first direction. | 07-26-2012 |
20120200899 | ERECTING EQUAL-MAGNIFICATION LENS ARRAY PLATE, OPTICAL SCANNING UNIT, IMAGE READING DEVICE, AND IMAGE WRITING DEVICE - An erecting equal-magnification lens array plate comprises first and second lens array plates stacked on one another, a fourth surface light-shielding wall, and an intermediate light-shielding wall. An intermediate through hole formed in the intermediate light-shielding wall is formed such that the hole diameter is progressively smaller in a tapered fashion away from the first lens array plate toward the second lens array plate. An angle of inclination θ of an interior wall surface of the intermediate through hole with respect to a optical axis is given by | 08-09-2012 |
20120206779 | ILLUMINATING DEVICE, IMAGE READING APPARATUS INCLUDING THE ILLUINATING DEVICE, AND IMAGE FORMING APPARATUS INCLUDING THE IMAGE READING APPARATUS - An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. | 08-16-2012 |
20120236371 | SCANNER ASSEMBLY - A scanner assembly comprising the following components. A scan module having a first surface and configured to receive an image oriented along the first surface. A carriage having a thickness no thicker than a thickness of the scan module perpendicular to the first surface, the carriage configured to receive the scan module and to move the scan module in a direction of travel. A v-bearing coupled to the carriage proximate to one end of the carriage and protruding from the carriage in a direction perpendicular to the first surface. A scan base having a groove and configured to receive the v-bearing. A belt drive configured to move the v-bearing in the groove of the scan base. | 09-20-2012 |
20120236372 | IMAGE READING APPARATUS AND IMAGE READING METHOD - According to one embodiment, an image reading apparatus includes a reading unit and an output unit. The reading unit is configured to selectively execute first reading processing for reading an image of a sheet conveyed at first conveying speed at first reading speed corresponding to the first conveying speed and second reading processing for reading the image of the sheet set on an image reading table at second reading speed different from the first reading speed. The output unit is configured to output read image data read by the first reading processing and the second reading processing. | 09-20-2012 |
20120236373 | LIGHT-SOURCE CONTROL DEVICE, LIGHT-SOURCE CONTROL METHOD, IMAGE READING DEVICE, AND IMAGE FORMING APPARATUS - A light-source control device includes a light source including a first light emitter for emitting light and a second light emitter for emitting light due to the light emitted by the first light emitter; a constant current unit configured to maintain a current constant that is input via the light source from a power supply; a switching unit configured to switch the current to be input to the constant current unit at a designated duty ratio and cycle; and a control unit configured to control the current applied to the light source so that a rise transition time and a fall transition time of the current applied to the light source are nearly equal to each other. | 09-20-2012 |
20120243060 | READING APPARATUS AND READING METHOD - Provided is a reading apparatus that includes a light source that emits a light to a source material and a plurality of image pickup elements that each receive the light reflected by the source material, to thereby read the source material. The plurality of image pickup elements are each located at different positions and each mounted at different angles with respect to a surface to be read of the source material. The reading apparatus compares read values acquired from the image pickup elements, so as to decide the property of the image expressed on the source material. | 09-27-2012 |
20120250108 | DOCUMENT SCANNER, AN ASSOCIATED METHOD OF OPERATING A DOCUMENT SCANNER, AND AN ASSOCIATED PROGRAM STORAGE DEVICE - Disclosed are embodiments of document scanner, a method and a program storage device wherein the scan mode is automatically adjusted to fall within standards established to prevent vision damage and/or discomfort and to still allow for high-resolution scanning. Specifically, the platen cover of the document scanner can be operatively connected to the scan carriage such that the mode at which the scan carriage operates depends upon the detected position of the platen cover. When the platen cover is closed, the scan carriage can automatically illuminate the document being scanned at a relatively high light intensity level and can move at a relatively fast speed. When the platen cover is opened, the scan carriage can automatically illuminate the document being scanned at a lower light intensity level and, optionally, can move at a slower speed to compensate for the lower light intensity level. | 10-04-2012 |
20120250109 | IMAGE-READING DEVICE AND MANUFACTURING METHOD THEREOF - A first light intensity curve is defined as a relationship between a first light intensity and a distance from a first reading unit. The first light intensity represents intensity of light that is part of a reflected light reflected off a first irradiated subject positioned at a distance from the first reading unit and is received by a first light-receiving unit. The first light intensity curve has a first intensity value at a first distance and a second intensity value at a second distance. The first intensity value is equivalent to the second intensity value. The first distance is different from the second distance. A distance between the first reading unit and a first read position is set to the first distance. A distance between the first reading unit and a first reference member is set to the second distance. | 10-04-2012 |
20120250110 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - The present disclosure relates to an image reading device, including: a light emitting portion; a light guiding member; a holding member that holds the light emitting portion and the light guiding member; and a case member that holds the holding member. In the image reading device, the light guiding member is shaped like a stick, of which end portion is disposed to face the light emitting portion. The holding member holds the light emitting portion and the light guiding member. In addition, the holding member has: and a holding portion that disposes the light guiding member along a main scanning direction, and positions and holds an end portion on the light emitting portion side in the main scanning direction. The case member holds the holding member. | 10-04-2012 |
20120250111 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device has a light emitting unit. The light emitting unit has a light emitting portion, a light guiding member, a holding member and a case member. The light guiding member is disposed along a main scanning direction, and an end portion of the light guiding member faces the light emitting portion. The light guiding member has a light irradiating portion which emits light to an outside. The holding member holds the light emitting portion and the light guiding member. In addition, the holding member has a first holding portion that directly or indirectly positions and holds the light emitting portion, and a second holding portion that positions and holds one end or both ends of the light guiding member. The case member houses the holding member that is in a state of being positioned. | 10-04-2012 |
20120257261 | ACTUATOR AND OPTICAL SCANNER - An actuator includes a movable portion which can swing around a swing axis, a connecting portion which extends from the movable portion, and a support portion which supports the connecting portion, wherein the movable portion is formed in a cross shape which includes a pair of first protrusions protruding along a direction perpendicular to the swing axis and a pair of second protrusions protruding along a direction parallel to the swing axis, and when a length of the movable portion in the direction perpendicular to the swing axis is A, a length of the movable portion in the direction parallel to the swing axis is B, a length of the first protrusion in the direction perpendicular to the swing axis is a, and a length of the second protrusion in the direction parallel to the swing axis is b, the following equations (A) and (B) are satisfied. | 10-11-2012 |
20120257262 | LIGHT SCANNING DEVICE AND IMAGE FORMATION APPARATUS - A light scanning device includes: a movable section which has a light reflection section reflecting light and oscillates around an oscillating axis and in which a maximum deflection angle thereof is variable; and a detection section which detects the maximum deflection angle of the movable section, wherein the detection section includes a light source which irradiates light toward the light reflection section, a light-receiving section which receives reflected light of the light from the light source, reflected by the light reflection section, and a displacement drive section which changes a position of the light-receiving section in accordance with the maximum deflection angle of the movable section. | 10-11-2012 |
20120281261 | SCANNING SYSTEM HAVING BRIGHTNESS COMPENSATION APPARATUS AND METHOD THEREOF - A scanning system having a brightness compensation apparatus and method thereof are described. The brightness compensation apparatus includes a statistics window control unit, a brightness statistics logic unit, and a comparing logic unit. The statistics window control unit sets a statistics window setting area. The brightness statistics logic unit generates the current brightness statistics data corresponding to the current page. The comparing logic unit compares the current brightness statistics data with brightness target value to determine whether the brightness compensation apparatus compensates the brightness of next page based on the comparison result and/or image gain of the current page for adjusting the brightness of the scanning system according to the compared result between the brightness statistic data and the brightness target value. | 11-08-2012 |
20120287483 | METHOD OF MEASURING IRRADIATION POSITION SHIFT AND FOCUS SHIFT IN OPTICAL SCANNING APPARATUS - A pupil splitting lens that splits a pupil of a light beam from a deflector into a plurality of light beams in a main scanning direction of the deflector and a pupil splitting lens that splits the light beam into a plurality of light beams in a sub-scanning direction are disposed relative to a light detection element. The light detection element detects image forming positions of the four light beams formed as a result of the splitting by the plurality of pupil splitting lenses. A CPU determines the amount of focus shift and the amount of image forming position shift from these four image forming positions. | 11-15-2012 |
20120287484 | IMAGE SENSOR UNIT, AND IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS USING THE SAME - An image sensor unit includes: a light guide reflecting light rays entering through a first light entering surface and a second light entering surface provided at both ends thereof, by a reflection surface to make the light rays exit through a light exiting surface and illuminates an original; a first light source provided near the first light entering surface; a second light source provided near the second light entering surface and different in wavelength from the first light source; and a first reflection part and a second reflection part provided on the reflection surface and composed of dot patterns constituted of two kinds of dots different in spectral reflectance. | 11-15-2012 |
20120293847 | IMAGE ARRAY WITH LOCALIZED LIGHT SOURCE - Embodiments of the present invention provide lighting for an image array. Specifically, embodiments of the present invention provide a system and method for providing localized lighting for an image array. In a typical embodiment, a set of pixels being scanned in the image array is identified. A subset of light sources within an array of light sources that corresponds to the set of pixels is engaged. After the pixels have been scanned, the subset of light sources is disengaged. | 11-22-2012 |
20120300270 | CONTROL CIRCUIT FOR SCANNER LIGHT SOURCE - A light source for a scanning apparatus, the light source includes a light emitting diode; and a control circuit including: a first portion including a first transistor, a second transistor and a resistor for setting a reference current; and a second portion including a third transistor, characteristics of the third transistor being substantially matched to characteristics of the second transistor, wherein an output current provided to light emitting diode by the second portion is substantially equal to the reference current. | 11-29-2012 |
20120300271 | LIGHT GUIDE, DOCUMENT ILLUMINATING DEVICE, IMAGE READING DEVICE, AND IMAGE FORMING APPARATUS - A light guide for guiding light from multiple point sources arranged in a first direction (Y | 11-29-2012 |
20120307321 | IMAGE READER - An image reader is provided, which includes a first light emitting unit emitting light toward a first side of a document sheet in a predetermined reading area, a second light emitting unit emitting light toward a second side of the document sheet in the predetermined reading area, a first light receiving unit receiving light emitted by the first light emitting unit and reflected by the document sheet and light emitted by the second light emitting unit and transmitted through the document sheet, and a controller that controls the first light emitting unit to emit light of a first color, controls the second light emitting unit to emit light of a second color, the first and second colors being mutually complementary colors, and controls the first light receiving unit to output read image data of the document sheet based on a light receiving result of the first light receiving unit. | 12-06-2012 |
20120307322 | IMAGE READING APPARATUS - An apparatus is provided capable of guiding regular reflected light from a reading surface to a reflecting mirror when light is irradiated from two directions from light sources to the reading surface, and is suitable to read a gloss image. The light sources for irradiating light to the reading surface from the two directions of different angles are configured of a first light emitter and a second light emitter, a mirror reflecting surface for specularly reflecting light and a translucent surface for passing light therethrough being formed on the surface of a reflecting member for deflecting light from the reading surface to a predetermined reading light path direction, the first light emitter being arranged between the platen and the platen side surface of the reflecting member, the second light emitter being arranged at the back surface of the reflecting member so as to irradiate light on the reading surface through the translucent surface. | 12-06-2012 |
20120320434 | OVERHEAD IMAGE-READING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM PRODUCT - An overhead image-reading apparatus includes an imaging unit integrally formed with a light source, and a light amount adjusting unit that adjusts a light amount so as to keep luminance of a surface of a medium to be read constant based on a correction value of the light amount corresponding to an object-image distance. | 12-20-2012 |
20120320435 | ILLUMINATING APPARATUS, IMAGE READING APPARATUS, AND IMAGE FORMING APPARATUS - In an illuminating apparatus including a plurality of rows of light source groups each having a plurality of light-emitting elements for irradiating light to an original that are arranged in a main scanning direction, the light-emitting elements in the plurality of rows of light source groups illuminate an irradiated face of the original at the same pitch within the same light source group and at different pitches from each other among the plurality of rows of light source groups. | 12-20-2012 |
20120320436 | IMAGE SENSOR UNIT, IMAGE READER, AND IMAGE FORMING APPARATUS - An image sensor unit includes: a light source including a light-emitting surface that emits light; a substantially rod-shaped light guide including a light emitter that linearizes the light from the light source and irradiates a sheet; an image sensor that receives light from the sheet and converts the light into an electric signal; a light condenser focusing the light from the sheet onto the image sensor; a circuit board on which the light source and the image sensor are mounted; and a frame accommodating the light guide, the light condenser and the circuit board. The light condenser and the light emitter of the light guide are disposed substantially parallel to each other. The center line of the light-emitting surface of the light source is disposed nearer the optical axis of the light condenser than the center line of the light emitter. | 12-20-2012 |
20130003143 | READER AND IMAGE FORMING APPARATUS - A reader includes a housing with a platen on which a document is placed, a light source unit which moves along the platen and irradiates light toward the document, a mirror unit which works with the light source unit to define an optical path of the reflected light from the document in the housing, and a rotatable lock member mounted on one of the light source and mirror units. The housing includes an operation member, which is slid to fix the light source and mirror units, and a slide surface, which holds the sliding operation member. The lock member is rotated between an engaged position, where the lock member is engaged with another of the light source and mirror units, and a disengaged position, where the lock member is disengaged from the other of the light source and mirror units in response to slide operation of the operation member. | 01-03-2013 |
20130010338 | IMAGE READING APPARATUS - In the present invention, to provide an image reading apparatus capable to read images of document images having different gloss levels with a reproducibility suitable for uses, a data processing means is provided to irradiate a document image with light from a regular reflection light source and a diffuse reflection light source, and to generate image data based on a regular reflection output value and a diffuse reflection output value obtained from a photoelectric converting means, this data processing means obtaining gloss pixel data by comparing, based on the regular reflection correction value for shading correction of a regular reflection output value, a diffuse correction output value for shading correction of the diffuse reflection output value, and a determining threshold for determining whether or not the regular reflection output value is a gloss pixel, the corrected output value corrected by the regular reflection correction value with the determining threshold, and obtaining a non-gloss pixel data from a corrected output value corrected by the diffuse correction value. | 01-10-2013 |
20130027758 | IMAGE READING APPARATUS AND COMPUTER READABLE MEDIUM - An image reading apparatus includes a light source, a reading unit, a moving unit, a moving speed control unit, a turn-ON time control unit. The light source irradiates light onto a document. The reading unit receives light reflected from the document, converts the received light into electrical charges, and accumulates the electrical charges as an image signal. The moving unit relatively moves the light source and the document. The moving speed control unit controls a moving speed of the moving unit in accordance with a reading mode of the image reading apparatus to control a reading speed in the reading unit. The turn-ON time control unit controls the light source to be turned off in a given period based on the reading mode when the reading unit accumulates the electric charges so as to prevent the electrical charges accumulated in the reading unit from reaching a saturation amount. | 01-31-2013 |
20130050781 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - An image reading apparatus, including: a light source; a reflection member changing a traveling direction of the light reflected from an original; an optical system imaging the light; a photoelectric converter receiving the light from the optical system to convert the light into an electric signal; and a light passing and blocking member disposed between the optical system and the photoelectric converter, and provided with an aperture through which the light from the optical system imaged on the photoelectric converter passes, the blocking member blocking non-convergent light which is not imaged on the photoelectric converter, wherein the blocking member has an inclined surface surrounding the aperture so that the aperture gets smaller from the optical system toward the photoelectric converter, and a hypothetical extension plane extending from the inclined surface toward the photoelectric converter intersects with an optical axis of the optical system without intersecting with photoelectric converter. | 02-28-2013 |
20130063792 | METHOD AND DEVICE FOR DRIVING LIGHT SOURCE, IMAGE READER, AND IMAGE FORMING APPARATUS - A light-source driving device includes a driving unit configured to drive a light source unit that emits light onto an object; and a driving control unit configured to control the driving unit to drive the light source unit in a first driving mode and a second driving mode. A light emission time of the light source unit is controlled in the first driving mode. An instantaneous value of a quantity of light of the light source unit being controlled in the second driving mode. | 03-14-2013 |
20130070316 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS AND COMPUTER-READABLE MEDIUM - An image reading apparatus includes a reading unit, a controlling unit and a changing unit. The reading unit receives a reflected light from a sheet onto which a light is irradiated from a light source, converts the received light into an image signal, and accumulates a charge corresponding to the image signal in accordance with a reading time of the sheet. The controlling unit controls the light source to be turned off in accordance with a reading mode of the sheet so that an amount of the accumulated charge does not reach a saturated amount. The changing unit changes an amplification factor of an amplifying unit in accordance with a turn-off time of the light source to amplify the image signal to a predetermined level when the controlling unit controls the light source to be turned off. The amplifying unit amplifies the image signal at a predetermined amplification factor. | 03-21-2013 |
20130070317 | Optical System for a Scanner - An optical system for a scanner according to one example embodiment includes a light source for illuminating a target area and a plurality of mirrors that includes a first mirror positioned to receive a light beam traveling along a first optical path and to reflect the beam along a second optical path. A second mirror receives the beam traveling along the second optical path and reflects the beam along a third optical path. A third mirror receives the beam traveling along the third optical path and reflects the beam along a fourth optical path. A fourth mirror receives the beam traveling along the fourth optical path and reflects the beam along a fifth optical path. A fifth mirror receives the beam traveling along the fifth optical path and reflects the beam along a sixth optical path. An image sensor receives the beam and senses an image of the target area. | 03-21-2013 |
20130100506 | LENS ARRAY AND IMAGE FORMING APPARATUS USING THE LENS ARRAY - According to one embodiment, a lens array includes a first lens and a second lens. The first lens includes a plurality of lens elements arrayed in a main scanning direction and configured to condense, with an emission surface, light made incident on an incident surface from an object point. The second lens includes a plurality of lens elements arrayed in the main scanning direction. The lens elements condense again, with an emission surface, light made incident on an incident surface. When the light from the object point is made incident on the incident surface of the first lens and emitted from the emission surface of the second lens, a distance between two points of emission positions on outermost sides on the emission surface of the second lens is substantially the same in the main scanning direction and a sub-scanning direction. | 04-25-2013 |
20130114117 | SYSTEMS AND METHODS FOR IMPROVING THE SCAN-LINE THROUGHPUT OF AN IMAGE SCANNER USING A MODULATED LIGHT SOURCE - This disclosure provides systems and methods for decoupling the mechanical drive systems of image scanners from the exposure system. A light source, such as an array of light-emitting diodes (LEDs), may be modulated in order to maintain a constant exposure for each scan-line, regardless of the document velocity. Accordingly, the present systems and methods allow for continuous document scanning at varying speeds. An automatic document feeder may dynamically adjust the velocity of a document without negatively impacting the exposure of the image scan. As the velocity of the document is changed, the modulation rate of the light source may be adjusted to maintain a constant exposure. | 05-09-2013 |
20130120808 | READING DEVICE - A reading device includes a first illuminating section that illuminates a reading area with first illumination light of a first direction; a second illuminating section that illuminates the reading area with second illumination light of a second direction; a light-receiving section that receives reflection light of the first illumination light and reflection light of the second illumination light reflected from the reading area, the first illumination light being applied from the first illuminating section and the second illumination light being applied from the second illuminating section; and reflecting members that are disposed side by side in the reading area in a widthwise direction thereof, and that have first and second reflecting surfaces. | 05-16-2013 |
20130128322 | IMAGE SCANNING APPARATUS AND CONTROL METHOD THEREOF - An image scanning apparatus and method are provided. The image scanning apparatus scans an image of a document and converts the scanned image into digital data, and includes light sources that emit light. The apparatus includes a light guide unit that diffuses the light emitted by the light sources and a sensor unit that senses image data from the document by recognizing light reflected from the document by being diffused by the light guide unit. The apparatus includes a control unit that controls the turning on of the light sources. The control unit alternately turns on or off the light sources such that at least one of the light sources is turned on when at least one other light source is turned off. | 05-23-2013 |
20130135695 | LED Illumination System for a Scanner Including a UV Light Emitting Device - An illumination system for a scanner according to one example embodiment includes an array of visible light emitting diodes each configured to emit light predominantly in the visible region of the electromagnetic spectrum and an ultraviolet light emitting device configured to emit light predominantly in the ultraviolet region of the electromagnetic spectrum. The visible light emitting diodes and the ultraviolet light emitting device are positioned to illuminate an object being scanned. | 05-30-2013 |
20130141766 | OPTICAL RADIATION DEVICE, IMAGE READER, AND IMAGE FORMING DEVICE - An optical radiation device includes a long light source unit in which light emitting elements are arranged in array, a long substrate on which the light source unit is mounted, a long optical guide to guide the light beams from the light emitting elements to a predetermined plane, and an optical collector to collect the light beams reflected by the predetermined plane. The length of an effective read area from a reading center of the optical collector to one end of the predetermined plane is different from that of an effective read area from the reading center to the other end thereof. The optical guide formed by injection molding includes a gate at one end in a length direction and a surface at the other end to exert total reflection, and is disposed so that the gate is positioned on the a same side as a shorter effective read area. | 06-06-2013 |
20130176603 | Backlit Scanner System and Method - A backlit scanner uses an exposure control device to adjust the amount of backlight that reaches the vicinity of the transmissive medium being scanned by the scanner. In this way, the amount of backlight can be controlled on a scan-by-scan basis, depending upon exactly how much backlight will lead to optimal image quality. In some preferred embodiments the backlit scanner is designed to scan x-ray images and/or other transmissive-medium medical images. | 07-11-2013 |
20130188229 | IMAGE FEEDFORWARD LASER POWER CONTROL FOR A MULTI-MIRROR BASED HIGH POWER IMAGER - A power saving apparatus and method for imaging modules in a variable data lithography system is provided. The imaging modules are arranged adjacent to each other to project a scan line of imaging data on a rotating imaging member in a variable data lithography system. The imaging module includes a look ahead buffer which stores imaging data and from which the stored data is read out for projection on the imaging member. The power saving apparatus uses an image look ahead concept to save part of the power consumed in the imaging modules in the projection mode of operation by selectively powering each laser source based on the imaging data in the look ahead buffer. | 07-25-2013 |
20130201536 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes: a light source device that emits five light beams corresponding to four basic colors and a single specific color; and five scanning optical systems corresponding the five light beams. One light beam in a first waveband among the light beams corresponding to the four basic colors enters one scanning optical system of the five scanning optical systems. The one scanning optical system includes a dichroic mirror that transmits a light beam in a second waveband different from the first waveband. An angle θb formed between a normal to the incidence plane of the dichroic mirror and orthogonal projection to an assumed plane orthogonal to the main scanning corresponding direction of the incident path of the light beam to the incidence plane of the dichroic mirror is set at an angle of 0° or more and an angle of 45° or less. | 08-08-2013 |
20130215480 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD AND COMPUTER READABLE MEDIUM - An image processing apparatus including, an input unit for inputting image data including a document region, a storage for storing the brightness of each pixel on a first main scan line outside the document region, a corrector for correcting the brightness of each pixel on the first main scan line in accordance with the brightness of pixels in a first part and the brightness of pixels in a second part on a second main scan line following the first main scan line, and an edge point detector for detecting an edge point of the document region situated on the second main scan line in accordance with the difference between the brightness of each pixel on the first main scan line corrected and the brightness of each pixel on the second main scan line respectively corresponding to each pixel on the first main scan line. | 08-22-2013 |
20130222864 | IMAGE FORMING APPARATUS - An image forming apparatus includes an exposing section, a pulse generating section, a frequency storing section, an emission control section, a smoothing section, and a driving-current generating section. The pulse generating section generates a periodic pulse signal indicating light amount of light beam emitted by a light source of the exposing section. The frequency storing section stores in advance a plurality of frequencies of the pulse signal. The emission control section selects, in the rendering of each main scanning line, any one of the plurality of frequencies and instructs the pulse generating section to generate the pulse signal having the selected frequency. The smoothing section smoothes the pulse signal generated by the pulse generating section according to the instruction of the emission control section and generates analog signal. The driving-current generating section generates driving current for the light source of the exposing section on the basis of the analog signal. | 08-29-2013 |
20130258424 | POWER SUPPLY CONTROL DEVICE, IMAGE PROCESSING APPARATUS, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING POWER SUPPLY CONTROL PROGRAM - A power supply control device includes a user interface unit including a touch panel unit that has a display function and an input function and a backlight unit, a control unit that controls the process of a processing apparatus body, at least two types of moving body detecting units that are capable of detecting a moving body and have at least relatively short and long detectable distances, a stepwise power supply unit that supplies power to the control unit when one moving body detecting unit with a short detection distance starts detection at the time when the other movement detecting unit with a long detection distance detects the moving body and detects the moving body, and an adjustment unit that, when the one moving body detecting unit does not detect the moving body, first adjusts the brightness of the backlight unit to predetermined brightness less than normal brightness. | 10-03-2013 |
20130258425 | IMAGE READING DEVICE STABILIZING QUALITIES OF READ IMAGES - An image reading device includes a conveying unit, reading unit, and a control unit. The conveying unit conveys successive two sheets along a conveying path such that a gap is formed between the successive two sheets. The reading unit reads a sheet conveyed at a reading position in the conveying path. The reading unit has a light source and light-receiving unit. The control unit controls the light source to emit light at a first light intensity for a sheet that has reached the reading position. The light-receiving unit receives light reflected by the sheet present at the reading position. The control unit further controls the light source to emit a light at a second light intensity lower than the first light intensity during a period of time from when the reading unit has been read the preceding sheet to when the reading unit begins reading the subsequent sheet. | 10-03-2013 |
20130258426 | ILLUMINATION APPARATUS, IMAGE SENSOR UNIT, IMAGE READING APPARATUS, AND IMAGE FORMING APPARATUS - Provided are: a light source that emits light; a light guide including: a curved portion including a light incident surface from which the light from the light source enters; and a linear portion including a light emission surface from which the light is emitted to an original, the linear portion coupled to the curved portion and extended in a main-scan direction, the curved portion reflecting the light entered from the light incident surface to the linear portion; and a frame that houses the light source, and the light guide, wherein the light guide includes an inclined portion inclined in a direction that increases an incident angle β of the light, the inclined portion formed in a range of the linear portion where the light reflected by the curved portion enters. | 10-03-2013 |
20130265618 | Image Reading Device and Method of Manufacturing Housing - A light guide inserted into an inclined groove is disposed so as to partially overlap with a lens unit that is fitted into a concave groove disposed parallel to the inclined groove when seen in a plan view, to regulate the separation of the lens unit from the concave groove and hold the lens unit in an insertion state by the light guide. Therefore, a fixing unit such as an adhesive agent is not required in fixedly disposing the light guide and the lens unit at a predetermined position of a frame, and a CIS module is assembled without using an adhesive agent, thereby allowing the CIS module that is easily disassembled when being discarded and that improves recycling efficiency to be provided. | 10-10-2013 |
20130265619 | Image Reading Device - Since a light emitting surface in a cross section perpendicular to the longitudinal direction of a light guide is formed to have a smaller width than a reflecting surface, light of an LED, which is incident from an end surface of the light guide and is scattered throughout the entirety of the longitudinal direction in the reflecting surface, is condensed toward the light emitting surface, and is then emitted in the form of a band toward a document from the light emitting surface. Therefore, it is possible to provide a CIS module including an illumination unit having a new configuration capable of illuminating a portion where the document and an optical axis of the lens array included in the lens unit intersect, in the form of a band with high efficiency using the illumination unit. | 10-10-2013 |
20130278974 | IMAGE READING APPARATUS AND METHOD FOR CONTROLLING THE SAME - An image reading apparatus capable of reading documents includes a reading unit including a light emitting element, a mechanism configured to move the reading unit, and a control unit configured to control the reading unit and the mechanism both to carry out reading by turning on the light emitting element and moving the reading unit and to temporarily stop moving the reading unit upon occurrence of a predetermined factor. The control unit sets a first current value which is caused to flow through the light emitting element when reading is carried out and sets a second current value which is less than the first current value and which is caused to flow through the light emitting element when the reading unit is temporarily stopped. | 10-24-2013 |
20130286447 | IMAGE READING CONTROLLER AND IMAGE READING APPARATUS - Disclosed is an image reading controller including an output unit that outputs plural control signals for controlling turning on and off of a light emitting unit of an image reading unit including the light emitting unit and a light receiving unit on respective transmission paths, the plural control signals satisfying at least one of a first condition that respective transmission paths are separated from each other by a predetermined distance or more and a second condition that types of the respective transmission paths are different from each other; and a controller that controls turning on and off of the light emitting unit on the basis of the plural control signals output from the output unit and input through the respective transmission paths. | 10-31-2013 |
20130286448 | IMAGE READING DEVICE CAPABLE OF DETERMINING WHETHER SHEET IS PRESENT AT READING POSITION - An image reading device includes a reading unit having a light-receiving unit and a light-emitting unit emitting a plurality of lights of different colors toward a reading position. An opposing member is disposed opposite the reading unit with the reading position interposed therebetween. The controller controls the light-emitting unit to emit the lights and the light-receiving unit to receive the lights thereby acquiring an intensity of each light. The controller determines that a sheet is not present when relationships among intensities of the plurality of lights are same as the first intensity relationships. The first intensity relationships are defined by intensities of the plurality of lights reflected by the opposing member and received by the light-receiving unit. The first intensity relationships are different from intensity relationships of the plurality of lights reflected by a sheet present at the reading position and received by the light-receiving unit. | 10-31-2013 |
20130314754 | IMAGING DEVICE ARRAY AND IMAGE FORMING APPARATUS - According to one embodiment, an imaging device array includes a plurality of imaging devices integrally including an incidence surface that converges light in the primary scanning direction, plural reflective surfaces that reflect light from the incidence surface multiple times, and an exit surface through which light that has reflected at the plural reflective surfaces exits the array. At least one of the plural reflective surfaces is formed at the apex of a protrusion that protrudes outwardly from the surface of the array, and the light that is output from the exit surface is imaged at an image point. | 11-28-2013 |
20130335789 | OVERHEAD IMAGE READING APPARATUS - An overhead image reading apparatus includes an image-capturing unit that captures an image of a medium to be read placed on a placement surface from above, a light source capable of irradiating the medium with light, and a brightness controller that gradually alters brightness of the light source at least when the light source is turned on or when the light source is turned off. The overhead image reading apparatus may gradually alter the brightness by duty control on current supplied to the light source. Or, the overhead image reading apparatus may gradually alter the brightness by controlling a current value supplied to the light source. Alternatively, the overhead image reading apparatus may include a variable aperture between the light source and the placement surface to gradually alter the brightness by controlling an opening area of the aperture. | 12-19-2013 |
20140016166 | IMAGE SENSOR UNIT AND IMAGE READING APPARATUS USING THE SAME - An image sensor unit includes: a light source including a light emitting element on a light emitting surface; a light guide that causes light from the light source to be incident on a light incident surface facing to the light emitting surface, ejects the light from a light ejecting surface and illuminates a document; a rod lens array that images reflected light from the document; a sensor substrate on which a photoelectric conversion element is mounted, the photoelectric conversion element converting the reflected light imaged by the rod lens array into an electric signal; and a frame that supports the light source, the light guide, the rod lens array and the sensor substrate, wherein positioning sections are provided on an opposite side of the light emitting surface of the light source and at a part of the frame which is disposed at the opposite side of the light emitting surface. | 01-16-2014 |
20140036322 | IMAGE SCANNING APPARATUS AND METHOD TO CONTROL A LIGHT SOURCE THAT AN INTENSITY OF LIGHT IRRADIATED TO ANY ONE OF A PLURALITY OF LINES OF THE DOCUMENT FROM THE LIGHT SOURCE EQUAL TO AN INTENSITY OF LIGHT IRRADIATED TO ANOTHER LINE - The image scanning apparatus includes a light source including at least one light emitting diode (LED) to irradiate light to a document which is a scan target, a light source control unit to control a lighting-up point of time of the light source, an image sensor to transform an image formed by light reflected from the document into an electric signal according to a result of controlling the lighting-up point of time, and an output unit to output image data corresponding to the transformed electric signal. | 02-06-2014 |
20140043661 | APPARATUS AND METHOD FOR READING ID DOCUMENTS IN AN OPEN ENVIRONMENT - An imaging apparatus for imaging a document in an open environment or a closed environment including processor, memory, an imaging device having at least one image sensor and a direct light-source, a bench having an upper surface and a document holding mechanism having at least one paperweight. The paperweights are disposed in respective fitted hollow columns formed in the document holding mechanism, extending generally perpendicular, upwardly from the upper surface of the bench, wherein the respective fitted hollow column facilitates free up and down motion of the paperweight inside, and wherein the document may be pushed underneath said paperweight to thereby flatten the document. | 02-13-2014 |
20140043662 | SCANNER LENS, IMAGE READER AND IMAGE FORMING DEVICE - A scanner lens includes a first lens group with a positive refractive power, having a first positive lens and a second negative lens which are cemented, second to fifth lens groups having a third negative lens, a fourth positive lens, a fifth negative lens, and a sixth negative lens, respectively, arranged in order from an object side to an image side, and an aperture stop disposed between the first and second lens groups. The scanner lens satisfies the following three conditions: | 02-13-2014 |
20140055827 | ILLUMINATION APPARATUS AND IMAGE READING APPARATUS - An illumination apparatus includes a light source, a light guide, and a holding member configured to hold the light source and to hold the light guide via a fixing member. Within a cross section including a plane normal direction of an exit surface of the light source and a plane normal direction of an entrance surface of the light guide, the plane normal direction of the entrance surface of the light guide or a direction within a surface of the light guide contacting the fixing member and the plane normal direction of the exit surface of the light source or a maximum intensity direction in light emission of the light source are inclined relative to each other such that a ray of light from the light source in the maximum intensity direction is refracted at the entrance surface of the light guide in a direction away from the fixing member. | 02-27-2014 |
20140063568 | METHOD AND APPARATUS FOR CORRECTING LIGHT GUIDE PATTERNING WITH A SECONDARY DIFFUSER - An illuminator includes a light guide having a light source that is configured to emit light along a length of the light guide. The light guide further includes outcoupling zones affixed to a rear portion of the light guide, each zones affixed a predetermined distance from each other zone, which are configured to direct at least a portion of the emitted light. The light guide also includes a first diffuser that corresponds to a front portion of the light guide, and which operates to diffuse emitted light exiting the front portion of light guide. The illuminator further includes a secondary diffuser that is located a predetermined distance from the front portion of the light guide forming an air gap there between. The secondary diffuser is configured to further diffuse the at least a portion of the emitted light diffused by the first diffuser after passage through the air gap. | 03-06-2014 |
20140078563 | OPTICAL SCANNING DEVICE AND METHOD FOR OPERATING THE SAME AND IMAGE FORMING APPARATUS - An optical scanning device comprising: a light source that emits a laser beam; and a driving unit connected to the light source and configured to drive the light source; the driving unit comprising: a first storage unit that stores in advance therein a setting value for controlling output of the laser beam; a second storage unit that stores temporally therein the setting value stored in the first storage unit; a storage controller connected to the first storage unit and the second storage unit; and a voltage detector connected to the storage controller and configured to detect a voltage value supplied to the driving unit, wherein the storage controller, upon the voltage detector detecting that the voltage supply is resumed, transfers the setting value stored in the first storage unit to the second storage unit automatically. | 03-20-2014 |
20140078564 | BOOKLET READING DEVICE - A document reading device for reading a page of a passport includes a mounting surface, a camera, an illumination light source for radiating illumination light that is, and an ultraviolet light source for radiating ultraviolet light to activate a fluorescent material on the page. The illumination light source is at a first edge perpendicular to a binding edge on the page and radiates illumination light in the direction intersecting with the first edge. The ultraviolet light source is at a second edge parallel to the binding edge and radiates ultraviolet light in the direction intersecting with the second edge. The illumination light source includes an infrared light source and a white light source. The document reading device has both an illumination light source and an ultraviolet light source, and can avoid image capturing in the specular reflection condition when the document is deformed. | 03-20-2014 |
20140085686 | FLUORESCENCE OBSERVATION DEVICE - The probability of extracting a region containing a large amount of fluorescent material is increased in accordance with the kind of fluorescent reagent etc. A fluorescence observation device includes an illuminating unit irradiating a subject with excitation light and illumination light; a fluorescence image capturing unit acquiring a fluorescence image by capturing fluorescence generated at the subject a return-light image capturing unit acquiring a return-light image by capturing return light returned from the subject; an extracting unit determining and extracting a region having a gray level exceeding a gray-level threshold from the fluorescence image as a region-of-interest; a display unit displaying the region-of-interest and the return-light image in association with each other; a true/false input unit prompting an observer to enter true or false as to the determination of the region-of-interest; and a threshold updating unit updating the gray-level threshold so as to reflect the input result entered. | 03-27-2014 |
20140111835 | IMAGE SCANNING UNIT - Provided is an image scanning unit which makes it possible to improve scanning accuracy while also making the overall body thinner by appropriately positioning a plurality of reflection members within an effective space in a carriage frame without wasting space. An image scanning unit, wherein a frame is divided into at least two spaces facing an irradiation surface, a first accommodation unit for accommodating a light source unit is formed in one of the spaces, a second accommodation unit for accommodating at least one reflection member is formed in the other adjacent space, a first reflection member for initially receiving light reflected from the irradiation surface is positioned at the side opposite the irradiation surface with the first accommodation unit positioned therebetween, and a light-shielding member is provided between the first reflection member and the reflection member positioned in the other space and prevents light that has strayed from a scanning light path from the first reflection member from being incident on the reflection member in the other space. | 04-24-2014 |
20140139893 | ILLUMINATION APPARATUS AND IMAGE READING APPARATUS - An illumination apparatus for use in an image reading apparatus that forms a reduction image of a read area of an original on an image pickup element by an imaging optical system, includes: a light source illuminating the original; and a light guide guiding light to the original; wherein the light guide has a first surface on which light is incident or that diffuses light, a second surface from which light exits toward the read area, and a third and fourth surfaces arranged between the first and second surfaces in a sub-scanning section perpendicular to a longitudinal direction of the light guide, the third surface arranged on a side closer to an optical axis of the imaging optical system, and the fourth surface arranged on a side farther from the optical axis, wherein the third and fourth surfaces are reflective surfaces having the same paraxial power which is appropriately set. | 05-22-2014 |
20140160537 | SCANNER DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A scanner device according to one aspect of the present disclosure has a first mode for reading a normal object placed on a document table, and a second mode for reading a self-luminous object placed on the document table. The scanner device has a light detecting portion and a control portion. The light detecting portion detects light of an object placed on the document table. The control portion switches the reading mode between the first mode and the second mode on the basis of a detection result of the light detecting portion. | 06-12-2014 |
20140160538 | SCANNER DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A scanner device according to one aspect of this disclosure includes a document table, a light detecting portion, and a control portion. The light detecting portion detects light from an object placed on the document table. The control portion adjusts reading sensitivity for the object on the basis of a detection result of the light detecting portion. | 06-12-2014 |
20140168724 | Document Illumination Device, Contact-Type Image Sensor Module, and Image Reading Device - A document illumination device includes a light-conducting member in which is formed a base surface that extends along a lengthwise direction, an irradiation surface that extends along the lengthwise direction and is tilted in the widthwise direction relative to the base surface, and a side surface that extends in the lengthwise direction and connects the base surface to the irradiation surface; a scattering member that is provided opposing the base surface and the side surface and that scatters light emitted from the base surface and the side surface; and a light source provided opposing a lengthwise direction-end surface of the light-conducting member. | 06-19-2014 |
20140168725 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an image reading mechanism configured to read an image from a document; an image forming mechanism configured to print the image read by the image reading mechanism on a recording sheet; and an image inspection mechanism configured to read the image printed on the recording sheet in the image forming mechanism. The image reading mechanism and the image inspection mechanism each include: a light source configured to irradiate a reading target with light; and a solid-state image sensing device on which reflected light from the reading target is made incident, and configured to perform photoelectric conversion operation. Light emitting members forming the light sources of the image reading mechanism and the image inspection mechanism have the same spectral characteristics. | 06-19-2014 |
20140185109 | LENS ARRAY, IMAGING APPARATUS, AND IMAGE READING APPARATUS - A lens array including: a plurality of imaging portions arrayed in a first direction; wherein each of the plurality of imaging portions includes a first optical system configured to form an intermediate image of an object and a second optical system configured to re-form the intermediate image of the object in a first cross section parallel to the first direction and a direction of optical axes of the imaging portions, and wherein in each of the plurality of imaging portions, an optical flux from an object height at which a light available efficiency becomes 90% is restricted by at least one of a first aperture surface of the first optical system and a second aperture surface of the second optical system, and the optical flux from an object height at which the light available efficiency becomes 10% is restricted by the aperture surface which restricts the optical flux from the object height at which the light available efficiency becomes 90%. | 07-03-2014 |
20140198353 | Imaging Device - A portable, thin, flexible, scan-less image capture device with low energy requirement and no moving parts. | 07-17-2014 |
20140198354 | IMAGE FORMING APPARATUS, LUMINANCE CORRECTION METHOD, AND STORAGE MEDIUM STORING PROGRAM - A frequency distribution of luminances is acquired from an image data acquired by optically reading a document. A frequency distribution of luminances of a background of the document is generated using the maximum frequency of the acquired frequency distribution as the maximum frequency of the frequency distribution of the luminances of the background of the document. A difference between the generated frequency distribution of the luminances of the background of the document and the acquired frequency distribution of the luminances is acquired, and the frequency distribution of the luminances of the background of the document is corrected based on the acquired difference. | 07-17-2014 |
20140204432 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD - An image reading apparatus includes: light-receiving elements arranged in a main-scanning direction to perform photoelectric conversion pixel by pixel; AD converter units that convert each piece of analog data photoelectric-converted by the light-receiving elements into parallel pieces of digital data; a storage unit that stores therein each of the digital data converted by the AD converter units; a converter unit that reads the digital data stored in the storage unit and converts the read digital data into serial data in the main-scanning direction; a readout control unit that changeably controls a readout start pixel and a readout end pixel of the serial data in the main-scanning direction; and a period change unit that changes a period in which the converter unit converts digital data into serial data in the main-scanning direction based on the readout start pixel and the readout end pixel. | 07-24-2014 |
20140211272 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device includes a light source, an imaging section, and a controller. The light source includes a plurality of light emitting elements. The light source irradiates light to an original document, while moving relative to the original document. The imaging section obtains scan data read from the original document by light irradiated to the original document from the light source. The controller controls the light source and the imaging section. The controller determines a read target region and a non-read target region in the original document, turns on a light emitting element out of the plurality of light emitting elements, which corresponds to the read target region, and turns off a light emitting element out of the plurality of light emitting elements, which corresponds to the non-read target region. | 07-31-2014 |
20140233077 | LIGHT IRRADIATION SYSTEM, IMAGE SCANNING APPARATUS, AND IMAGE FORMING APPARATUS - An light irradiation system for irradiating light a document face includes a light source; a light guiding member to guide light emitted from the light source; and a reflector to reflect a part of light exiting from the light guiding member to the document face. A direction that emission light intensity of the light emitted from the light source becomes the strongest is different from a direction extending from the light source to an irradiation area. The irradiation area is irradiated by a reflection light reflected by the reflector, and a direct light exiting from the light guiding member without reflection at the reflector. The light guiding member including an incidence surface, an exit surface, and a light guiding part including a total reflection face. Light quantity irradiated to the document face by reflection light is smaller than light quantity irradiated to the document face by direct light. | 08-21-2014 |
20140240795 | LIGHT SCANNING APPARATUS AND IMAGE FORMING APPARATUS USING THE SAME - The object of the present invention is to provide a light scanning apparatus of a simple arrangement which can reduce print misregistration of respective beams in a main scanning direction in an image region even when an inexpensive imaging optical unit which forms a spot image on the image region of a surface to be scanned, and can form a high-resolution image, and an image forming apparatus using the same. | 08-28-2014 |
20140240796 | Abnormal Reflected Light Resistant Image Reading - An image reading apparatus includes a light emitting diode (LED), a carriage, light receiving elements, a clamp circuit, an A/D convertor, and an image correction unit. The image correction unit is configured to: detect a document area where the reflected light is abnormal by comparing first image data with second image data; and replace the first image data corresponding to the abnormal document area with third image data. The first image data is generated by movement of the carriage in a sub-scanning direction of a first direction. The second image data is generated by movement of the carriage in the sub-scanning direction of a second direction at a reduced luminescence level of the capturing light illuminated on the document compared with a luminescence level in the movement of the carriage in the first direction. The third image data is the second image data where at least brightness is adjusted. | 08-28-2014 |
20140240797 | ILLUMINATING DEVICE, IMAGE READING APPARATUS INCLUDING THE ILLUMINATING DEVICE, AND IMAGE FORMING APPARATUS INCLUDING THE IMAGE READING APPARATUS - An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. | 08-28-2014 |
20140253981 | IMAGING APPARATUS AND BRIGHTNESS ADJUSTMENT METHOD - A document camera includes an imaging device, a focus lens to form an image of a subject on the imaging device, an illumination part to illuminate the subject, a focusing adjustment part to focus the image of the subject on the imaging device by moving the focus lens, and a brightness adjustment part to adjust brightness of illumination light of the illumination part based on a movement amount of the focus lens. | 09-11-2014 |
20140253982 | ILLUMINATION DEVICE AND IMAGE READING APPARATUS - An illumination device and an image reading apparatus having improved heat resistance and spectral characteristics are provided. An illumination device used in an image reading apparatus that moves relative to a read area of a document includes: a light source; a light guide including an incident surface on which light from the light source is incident and an exit surface from which light from the light source exits; and a spectroscopic unit that is provided between the light source and the light guide and includes, on a surface of a glass substrate facing the light source, a multi-layer film for reflecting infrared light toward the light source. | 09-11-2014 |
20140253983 | IMAGE READING LENS, IMAGE READER, AND IMAGE-FORMING APPARATUS - An image reading lens which reads an original image includes a front group lens system on an object side, and a back group lens system on an image side, the front group lens system including three lenses having two positive lenses and a negative lens, and the back group lens system including a plastic negative lens. | 09-11-2014 |
20140268254 | LIGHT IRRADIATION SYSTEM, IMAGE SCANNING APPARATUS, AND IMAGE FORMING APPARATUS - A light irradiation system for irradiating light to an irradiation area extending in a main scanning direction of a document face when placed on an image scanning apparatus includes a light source; a light guiding member to guide light emitted from the light source; and a reflector to reflect a part of light exiting from the light guiding member to the document face. The irradiation area is irradiated by the reflection light reflected by the reflector and a direct light exiting from the light guiding member without reflection at the reflector. The light guiding member includes an incidence surface where the light from the light source enters; and an exit surface where the light entered from the incidence surface exits. The reflector is disposed at a position in a direction that light intensity of light emitting from the light source becomes the strongest. | 09-18-2014 |
20140268255 | IMAGE READOUT METHOD AND IMAGE READOUT APPARATUS - The number of encoder pulses of a linear encoder when an optical head is moved from a scanning start position to a scanning end position during image readout is obtained as a comparative pulse number. An image processing section corrects pixel positions in a direction corresponding to a main scanning direction X of an image based on the difference between a reference pulse number which is determined in advance and the comparative pulse number. | 09-18-2014 |
20140293370 | SCANNING METHOD AND APPARATUS - A scanning method and apparatus. The method comprising the steps of: measuring an ambient video level using an area sensor under the control of a processor means; and calculating a gain and/or a exposure time and/or light source power for an actual flash video level using a stored reference flash video level and the measured ambient video level such that a summation of the actual flash video level and the ambient video level yields a desired video level in a scan image of the document using the calculated gain and/or exposure time and/or light source power. | 10-02-2014 |
20140293371 | IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD - An image reading device includes a red light source, a green light source, a blue light source, a white reference plate, a light-amount adjusting section, a photo-detecting section, and a signal processing section. The light-amount adjusting section sets lighting periods of the red, green, and blue light sources for reading in a monochrome mode, based on: lighting periods of the red, green, and blue light sources set for reading in a color mode; and a result of detection performed by the photo-detecting section when the white reference plate is illuminated with the red light, the green light, and the blue light respectively emitted by the red, green, and blue light sources for the respective lighting periods set for reading in the color mode. | 10-02-2014 |
20140293372 | LIGHTING UNIT AND IMAGE SCANNER USING SAME - A lighting unit is provided with: LED arrays in which light-emitting elements are positioned in an array in a main scanning direction; cylindrical parabolic mirrors that project light emitted from the LED arrays on an illumination region of an illuminated item; and a housing that houses or holds the LED arrays and the cylindrical parabolic mirrors. Each cylindrical parabolic mirror forms a shape in which a cylindrical paraboloid having curvature with respect to a sub-scanning direction has been clipped by an axial plane that is perpendicular to the vertex of the cylindrical paraboloid in the main scanning direction. The LED arrays are positioned so as to include the focal position of the cylindrical paraboloid in the light-emitting region, the central axis in the light-emitting direction being perpendicular to the axial plane. | 10-02-2014 |
20140300936 | SCANNING MODULE STRUCTURE - A scanning module structure includes an optical reflective casing, a light-emitting element, and an optical sensing module. The optical reflective casing includes plural fixed tilting structures and plural reflective aluminum sheets. The plural fixed tilting structures are integrally formed with the optical reflective casing. The plural reflective aluminum sheets are disposed on corresponding fixed tilting structures. The light-emitting element is used for emitting a light beam. The light beam is reflected by the plural reflective aluminum sheets. When the scanning module structure is enabled, the light beam emitted by the light-emitting element is projected onto a document. After the light beam is reflected by the document, the light beam is introduced into the optical sensing module. The light beam is sequentially reflected by the plural reflective aluminum sheets, and then projected onto the optical sensing module. Consequently, a document image corresponding to the document is generated. | 10-09-2014 |
20140320937 | IMAGE SENSOR UNIT AND IMAGE READING APPARATUS USING THE IMAGE SENSOR UNIT - A reflection reading light guide that emits light of a reflection reading light source, from a reflected light emission surface to bill S; a transmission reading light guide that emits light of a transmission reading light source, from a transmitted light emission surface to bill S; a rod-lens array that focuses reflected light from the bill S and/or transmitted light transmitted through bill S; a light receiving element that receives light collected by the rod-lens array; and a frame including a housing portion that houses the reflection reading light guide are disclosed. A light blocking portion that protrudes from the reflected light emission surface of the reflection reading light guide toward optical axis Z of the rod-lens array is included in the housing portion, and includes a positioning reference surface for the reflection reading light guide. Influence of stray light is reduced, and accuracy of read image is improved. | 10-30-2014 |
20140320938 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device includes a contact glass having a document placing surface, an index part to be an index for aligning a corner of a document to a reference point within the document placing surface, a reading portion configured to read the document, and a light emitting portion configured to emit linear light extending in a main scanning direction. When a predetermined point apart from the index part within the document placing surface is set as the reference point, the light emitting portion moves in a sub-scanning direction so that a region of the contact glass irradiated with the linear light coincides with the predetermined point, and emits the linear light. | 10-30-2014 |
20140327941 | SCANNING APPARATUS - A scanning apparatus includes a scanning module, a calibration plate, and a driving module. The calibration plate includes a first background region for calibrating the brightness of the scanning module and a second background region for intensifying an edge of a document to be scanned. The driving module is used for driving movement of the calibration plate. As a consequence, the scanning light beam from the scanning module is projected onto the first background region or the second background region of the calibration plate. Under this circumstance, the purposes of calibrating the brightness and increasing the image processing efficiency are both achieved. Moreover, since the calibration plate is driven by the driving module to be moved in the direction parallel with said scanning light beam, the purpose of dynamically adjusting the brightness can be achieved. | 11-06-2014 |
20140340721 | OPTICAL DETECTING DEVICE AND RELATED METHOD OF SYNCHRONIZATION ADJUSTMENT - A method of synchronization adjustment is applied to an optical detecting device, so as to synchronize an exposure timing sequence of an image detector with a light emitting timing sequence of an indicating light source. The method includes acquiring a continued image set, analyzing intensity of each image of the continued image set, and adjusting the exposure timing sequence according to duty cycle of the image detector and intensity ratio of at least two images. An exposure frequency of the image detector is greater than a flickering frequency of the indicating light source. | 11-20-2014 |
20140347708 | LIGHT SOURCE DRIVING CIRCUIT, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A light source driving circuit that drives a light source includes a driving electric current generator that generates a driving electric current including a predetermined electric current, a first auxiliary current, and a second auxiliary current; and a controller that sets values of the first and second auxiliary currents by using first and second lighting pattern signals, wherein each of the first and second lighting pattern signals is for controlling supply of the predetermined electric current to the light source. After setting a first value of the first auxiliary current, a second value of the second auxiliary current is set by using the second lighting pattern signal that defines a time period for stopping supply of the predetermined electric current to be shorter than a time period for stopping the supply of the predetermined electric current that is defined by the first lighting pattern signal. | 11-27-2014 |
20140355080 | IMAGE READING APPARATUS AND MULTIFUNCTION PRINTING APPARATUS - An embodiment of this invention is directed to reading an original at a high resolution with high quality by an image reading apparatus using a 3-line CCD and white LED. The image reading apparatus according to the embodiment includes a 3-line CCD, a white LED, and a light guide configured to guide light from the LED to an original. A surface of the light guide from which light emerges toward the original is formed into a concave shape. Light from the light guide almost uniformly irradiates the reading region of an image placed on a platen glass. | 12-04-2014 |
20140362423 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - An image reading device includes a platen on which an original is to be placed, an illuminating unit configured to illuminate the original, a linear sensor configured to receive light from the original, an optical unit configured to guide the light from the original to the linear sensor, and an aligning portion configured to determine a position of the original in a long-side direction of the linear sensor. The illuminating unit includes a light-guiding member extending in the long-side direction of the linear sensor, and a light source provided only at one long-side end of the light-guiding member. The aligning portion is provided on a side opposite the light source in the long-side direction of the light-guiding member. | 12-11-2014 |
20140376063 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD AND STORAGE MEDIUM - An image forming apparatus includes a detection unit that emits light on a recording medium or a platen and detects reflected light while the detection unit moves in a direction perpendicular to a transportation direction of the recording medium; a width calculation unit that compares a value indicative of light intensity responsive to the reflected light with a threshold, and calculates a width of the recording medium measured from a position of the detection unit where the value indicative of light intensity responsive to the reflected light becomes greater than or equal to the threshold; an image formation unit that performs an operation of forming an image based on the calculated width of the recording medium; and an image formation control unit that halts the operation of forming the image upon detecting that the calculated width is less than or equal to a predefined value. | 12-25-2014 |
20140376064 | SCANNING APPARATUS WITH PATTERNED PROBE LIGHT - A 3D scanner for recording the 3D topography of an object, the 3D scanner includes an illumination unit configured for providing probe light for illuminating the object, where the probe light includes a pattern of light rays; an image sensor for acquiring one or more 2D images of light rays returning from the illuminated object; an optical system including an optical element arranged such that the patterned probe light passes through it when propagating towards the object from the illumination unit along an optical path; and a device for changing the configuration of the optical system between a first and a second configuration, where the change in configuration comprises a change in orientation of the optical element between a first orientation and a second orientation relative to the optical path of the probe light. | 12-25-2014 |
20140376065 | LIGHTING UNIT AND IMAGE SCANNER USING SAME - A lighting unit includes LED chips positioned in an array form in a main scanning direction on LED substrates. Cylindrical parabolic mirrors each form a shape in which a cylindrical paraboloid having curvature with respect to an sub-scanning direction has been clipped by an axial plane that is perpendicular to the vertex of the cylindrical paraboloid in the main scanning direction, and project light emitted from the light source on an illumination area of an illuminated item. Each cylindrical parabolic mirror includes an anchoring section that is provided at the vertex of the cylindrical paraboloid, and extends from the vertex in an outside direction of the cylindrical paraboloid. Heat-radiating plates each have a contact section that is in contact with the LED substrate, and a non-contact section. Each LED substrate is interposed between the contact section of the heat-radiating plate and the anchoring section of the cylindrical parabolic mirror. | 12-25-2014 |
20140376066 | Image Reading Device - An image reading device including an illumination unit that has a light guide body guiding light of a light source that is facing one longitudinal end surface of the light guide body to an object to be read; and an image forming optical device that is parallel to the light guide body, has a lens array with an incidence surface in which lens surfaces are arranged in the longitudinal direction of the light guide body, and condenses reflected light from the object which is incident on the incidence surface, thereby forming an erect equal-magnification image on a sensor. The image reading device further includes a frame on which is disposed the image forming optical device. A second frame projects in a direction away from the first frame and connects to the first frame, or the frame connects to an H-shaped cross-section frame. | 12-25-2014 |
20150009544 | MULTI-FUNCTIONAL DEVICE HAVING SCANNER MODULE AND IMAGE SCANNING APPARATUS EMPLOYING THE SCANNER MODULE - A multi-functional device comprising an image forming apparatus to form a printing image and a scanner module to scan an image in a main scanning direction. The scanner module includes an illuminator to illuminate a light to a document mount, a sensor unit to read an image information of an object placed on the document mount, and an imaging lens which is disposed between the document mount and the sensor unit and focuses the light reflected from the object onto the sensor unit. The illuminator includes a light source to emit light, a light guiding unit which is lengthened in a sub-scanning direction, faces the document mount and changes a traveling path of the light emitted from the light source to illuminate the document mount, and a guide holder which comprises an installation part where the light guiding unit is installed, and a mounting part where the light source holder is mounted to provide the light source at least one side of the light guiding unit. | 01-08-2015 |
20150022868 | IMAGE READING APPARATUS, AND IMAGE FORMING APPARATUS - Provided is an image reading apparatus including a light source that irradiates an original document that passes through a reading position with light, a light receiving unit that receives reflected light from the original document, a background member that is inclined at an angle where a difference between an incident angle of the light from the light source and a reflection angle of the light to the light receiving unit is smaller than a difference therebetween on the original document present at the reading position, with the original document at the reading position interposed between the background member and the light source, and a foreign substance detecting section that detects, when the original document is not present at the reading position, a foreign substance present at the reading position. | 01-22-2015 |
20150036195 | IMAGE SCANNING APPARATUS, METHOD FOR DISCRIMINATION OF COLOR AND COMPUTER-READABLE RECORDING MEDIUM - An image scanning apparatus may include a scanner configured to scan a manuscript and generate a plurality of scan images; a discriminator configured to calculate a color ratio regarding each of the generated plurality of scan images, compare the calculated color ratio and a predetermined reference value, and discriminate color or black and white regarding each of the generated plurality of scan images; and a controller configured to control the discriminator so that a same discrimination is can be performed regarding ‘a scan image having a color ratio within a predetermined range including the predetermined reference value’ of among the plurality of scan images. | 02-05-2015 |
20150043044 | LINEAR LIGHT SOURCE MODULE WITH TWO LIGHT GUIDES AND OPTICAL ASSEMBLY FOR SCANNER - A linear light source module comprises a holder, a first light guide, a second light guide, a first light-emitting element and a second light-emitting element. The first and second light guides are mounted on the holder and arranged in series, where the first light guide has a first emitting surface and the second light guide has a second emitting surface. The holder partially surrounds the first and second light guides. The first light-emitting element is disposed close to a first end of the first light guide, and a light beam emitted by the first light-emitting element is reflected and converted by the first light guide into first linear light emitted from the first emitting surface. The second light-emitting element is disposed close to a first end of the second light guide, and a light beam emitted by the second light-emitting element is reflected and converted by the second light guide into second linear light emitted from the second emitting surface. An optical assembly for a scanner using such linear light source module is also disclosed. | 02-12-2015 |
20150055195 | LIGHT GUIDING BODY, ILLUMINATING DEVICE, IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - A light guiding body includes a long translucent body, a light incident surface formed at an end of the body in a longitudinal direction of the body, a light emitting surface formed on one side surface of the body along the longitudinal direction of the body, and a light emitting quantity adjusting portion formed on the other side surface of the body along the longitudinal direction of the body so as to be opposite to the light emitting surface. The light guiding body guides, in the body, light incident to the light incident surface, reflects the light by the light emitting quantity adjusting portion, and emits the light from the light emitting surface. A width of the light emitting quantity adjusting portion of the body in a direction perpendicular to the longitudinal direction of the body is varied according to a position in the width in the longitudinal direction. | 02-26-2015 |
20150055196 | Image Reading Apparatus Efficiently Illuminating Light - An image reading apparatus for reading an image of an original document includes a document placement surface, an illumination unit, a light-receiving unit, and an illumination control unit. The illumination unit includes: a first light guiding body in a bar shape extended in a first direction configured to irradiate a light to the original document along a second direction, a second light guiding body arranged at a distance from the first light guiding body configured to irradiate a light to the original document along a third direction, a pair of first light sources emits illuminating lights to be injected into the first incident surfaces, a pair of second light sources emits illuminating lights to be injected into the second incident surface. The illumination control unit is configured to control light-emitting operations of the first light source and the second light source corresponding to the reading mode. | 02-26-2015 |
20150062668 | LIGHT IRRADIATION DEVICE AND IMAGE FORMING APPARATUS - A light irradiation device includes: a light source to output diffused light; and a light guide member to guide the diffused light to an irradiation point. The light guide member includes an incidence surface which the diffused light enters, a first emission surface to emit the entered diffused light, while further diffusing the entered diffused light with a first diffusion characteristic to emit the diffused light at a first diffusion angle, and a second emission surface to emit the entered diffused light, while further diffusing the entered diffused light with a second diffusion characteristics to emit the diffused light at a second diffusion angle. The second diffusion angle provided by the second diffusion characteristic is smaller than the first diffusion angle provided by the first diffusion characteristic. | 03-05-2015 |
20150062669 | LIGHT SOURCE FOR EXPOSURE AND IMAGE FORMING APPARATUS - Provided is a light source for exposure including: a circuit section which includes plural pixel circuits arranged in one direction, a scanning circuit which outputs a scanning signal, a scanning line which supplies the pixel circuits with the scanning signal; light-emitting elements connected to the pixel circuits; and data lines which supply a lead wire with a data signal via the pixel circuits, wherein a data line group including the plural data lines, a light-emitting element group including the plural light-emitting elements, and the circuit section are arranged in this order in a direction perpendicular to a direction in which the plural pixel circuits are arranged. | 03-05-2015 |
20150092253 | IMAGE READING APPARATUS - An image reading apparatus includes a casing that blocks ambient light and has an opening portion in a bottom surface, an image capturing unit that captures an image of a medium exposed to an internal portion of the casing in the opening portion, and a plurality of light sources that are arranged on the internal portion of the casing and irradiate light toward the opening portion. The plurality of light sources irradiate light to different areas on a plane in the opening portion. | 04-02-2015 |
20150098118 | DUAL-SLOPE LIGHT GUIDE, LIGHT SOURCE MODULE AND OPTICAL ASSEMBLY FOR SCANNER - A dual-slope light guide includes a first surface, a second surface and a curved surface. The first surface has first reflecting structures. The second surface, connected to the first surface, has second reflecting structures. An included angle between the first surface and the second surface is unequal to 180 degrees. The curved surface connects the first surface to the second surface. The first surface, the second surface and the curved surface extend from a first end of the light guide to a second end of the light guide. A light beam incident to the first end of the light guide is reflected and converted by the first reflecting structure and the second reflecting structure into linear light emitted from the curved surface. A light source module and an optical assembly for a scanner are also disclosed. | 04-09-2015 |
20150116791 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - An image reading apparatus sets an irradiation region below a fixed reading glass when light guide members diffuse light of LEDs upward so that the irradiation region corresponding to a significantly sagged portion in a main scanning direction is wider than that corresponding to portions on both sides of the significantly sagged portion, and sets a light intensity of a plurality of LEDs corresponding to the significantly sagged portion in the main scanning direction to be larger than that of a plurality of LEDs corresponding to the portions on both sides of the significantly sagged portion. Therefore, the degradation of the illuminance corresponding to the significantly sagged portion due to the pressed fixed reading glass can be prevented, and the entire document can be read with uniform reading precision. | 04-30-2015 |
20150116792 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, STORAGE MEDIUM, AND IMAGE READING METHOD - An image reading apparatus irradiates an object with light and reads an image on or of the object. The image reading apparatus includes a table on which the object is placed, a planar light source configured to emit light to the object, a range-finding section configured to measure a distance between the table and the object, and a control section configured to cause the planar light source to entirely or partially emit light. The control section controls a light emitting portion of the planar light source thereby to control a light collection spot for the planar light source to a position based on a measurement value obtained by the range-finding section. | 04-30-2015 |
20150116793 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device includes a light source, an imaging element and a control unit. The light source irradiates light on a document. The irradiated light of the light source reflected by the document is incident on the imaging element. The control unit is configured to, if the document is an ordinary document having no light-emitting screen, set a light amount of the irradiated light of the light source at a predetermined reference value and is configured to, if the document is a special document having a light-emitting screen, reduce the light amount of the irradiated light of the light source to become lower than the reference value. | 04-30-2015 |
20150138611 | DOCUMENT HANDLER USING DUAL HEIGHT CALIBRATION TARGET FOR AUTOMATIC CALIBRATION - The present application discloses methods and systems for calibrating a scanning system. The scanning system comprises a light-transmissive platen defining a top surface and a bottom surface, a controller, a document handler, and a scanner bar for recording image data from documents at various document heights. In one embodiment, the calibration method proposes the use of two calibration strips in a document scanning system that has both platen scanning and Constant Velocity Transport (CVT) scanning modes. In another embodiment, a scanner is disclosed with a dual calibration target or a single calibration target that is manufactured with two (2) different heights to correct the illumination profile at the CVT scanning height or at the platen scanning height. | 05-21-2015 |
20150138612 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS - An image reading apparatus includes a document sheet cover, a pressing portion, and a light irradiating portion. The document sheet cover is openable and closable with respect to a document sheet mounting surface. The pressing portion is provided in a recess formed in a counter surface of the document sheet cover that faces the document sheet mounting surface. The pressing portion is biased in a direction to project from the counter surface. When the document sheet cover is closed, the pressing portion contacts a document sheet placed on the document sheet mounting surface and is housed in the recess. The light irradiating portion is configured to irradiate light, toward the document sheet mounting surface, from a gap formed between a side wall of the recess and the pressing portion. | 05-21-2015 |
20150146268 | OPTICAL SCANNER INTEGRATED WITH SUBSTRATE METHOD OF MAKING AND METHOD OF USING THE SAME - An optical scanner includes a substrate, and a tunable laser on the substrate, wherein the tunable laser is configured to emit light, and to sweep a wavelength of the emitted light through a waveband. The optical scanner further includes a grating over a top surface of the substrate, the grating configured to diffract light emitted from the tunable laser, and an angled reflective surface configured to reflect the diffracted light from the grating. The optical scanner further includes a refractive element configured to receive the reflected light from the angled reflective surface. The refractive element is configured to focus the reflected light in a first direction and to diverge the reflected light in a second direction perpendicular to the first direction. | 05-28-2015 |
20150304517 | PHOTOELECTRIC CONVERSION ELEMENT, IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD - A photoelectric conversion element includes: a plurality of light receiving elements that are arranged in a main-scanning direction, are arranged in a sub-scanning direction according to colors of light to be received, and accumulates electric charge due to light exposure; and a plurality of AD conversion units that convert analog signals that indicate quantities of electric charge accumulated in the light receiving elements into digital signals are provide for each of groups each consisting of a predetermined number of pixels corresponding to the light receiving elements arranged in the sub-scanning direction. The AD conversion units convert the analog signals into the digital signals in an order in which the light receiving elements in the group are exposed to light. The light receiving elements constitute a correction unit that performs correction so as to reduce a difference relating to the timings in the sub-scanning direction. | 10-22-2015 |
20150312436 | SCANNER DEVICE AND IMAGE FORMING APPARATUS - A scanner device has a first mode for reading a normal object placed on a document table and a second mode for reading a self-luminous object placed on the document table. The scanner device includes a light detecting portion and a control portion. The light detecting portion detects light from an object placed on the document table. The control portion switches the reading mode between the first mode and the second mode on the basis of a detection result of the light detecting portion. When an image sensor detects light from the object placed on the document table in the second mode, the sensitivity of the image sensor is automatically adjusted in accordance with the amount of the detected light. | 10-29-2015 |
20150319329 | IMAGE READ-IN DEVICE - An image reader configured to read an image of an object-to-be-read includes: a board, a line sensor assembly including a plurality of photosensitive elements formed on one surface of the board along a main scanning direction, a lens array assembly including a plurality of lenses arrayed along the main scanning direction, and configured to focus the reflected light onto the line sensor assembly, a light shield configured to support a portion of the lens array assembly at the line-sensor-assembly side or to be in contact with the portion of the lens array assembly at the line-sensor-assembly side, and to block light other than the light focused by the lens array assembly, and a transparent member made of transparent material, formed with a retainer space where the lens array assembly and the light shield are retained, and covering a portion of the lens array assembly at the object-to-be-read side and the light shield. | 11-05-2015 |
20150334263 | SENSOR DEVICE, IMAGE FORMING APPARATUS, AND CONTROL METHOD FOR LIGHT SOURCE - A sensor device includes an irradiation unit that includes a light source and irradiates an object with light, an optical detection unit disposed on an optical path of light emitted from the irradiation unit and reflected at the object, at least one object sensor that detects presence of the object, and a controller that controls the light source based on output from the object sensor. | 11-19-2015 |
20150341523 | IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD - An image reading device includes: a moving body that moves to convey at least any of a light source that irradiates a document, a reflecting member that reflects reflected light from the document, and a photoelectric conversion element that performs photoelectric conversion on the reflected light; a driving unit that drives the moving body such that the moving body moves from a stop position to a target stop position in a sub-scanning direction; a detecting unit that is arranged at a position away from the target stop position in the sub-scanning direction, and detects arrival of the moving body; and a control unit that controls the driving unit such that the driving unit is switched from a state of being driven in a synchronizing operation region to a state of being driven in a self-starting region before the detecting unit detects arrival of the moving body. | 11-26-2015 |
20150350491 | IMAGE FORMING APPARATUS - An image forming apparatus forms an image by optical scanning. The image forming apparatus includes: a light source; an image processing unit that processes image data; a modulation signal generation unit that generates a light source modulation signal; a light source drive unit that drives the light source based on the light source modulation signal; and a correction value identifying unit that identifies a correction value for correcting a registration error of an image to be formed. The image processing unit performs first image processing of image data with first resolution based on a correction value identified by the correction value identifying unit, the first image processing including deformation processing and gradation processing of the image data. The modulation signal generation unit converts image data processed in the image processing unit into image data with resolution higher than the first resolution and performs second image processing. | 12-03-2015 |
20150365556 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS EQUIPPED THEREWITH - An image reading apparatus has a light source unit for illuminating an object to be illuminated, a reading unit for reading the object illuminated by the light source unit, a reflective unit, having at least a first reflection mirror, for reflecting reading light reflected by the object toward the reading unit, and a first light blocking portion for partially blocking light except the reading light. The first reflection mirror has a reflecting surface for reflecting the reading light, and an end surface substantially orthogonal to the reflecting surface. The first light blocking portion extends in a longitudinal direction of the first reflection mirror toward the end surface of the first reflection mirror, with a tip end of the first light blocking portion being opposed to the end surface of the first reflection mirror with a gap therebetween. | 12-17-2015 |
20150381845 | APPARATUS AND METHOD OF OBTAINING IMAGE - Disclosed is an apparatus for obtaining an image. The apparatus for obtaining an image includes a light source, a scanner, a first beam splitter, and a light receiving unit. The light source generates a laser pulse. The scanner irradiates the laser pulse in a first direction. The first beam splitter splits the laser pulse irradiated in the first direction in the first direction and a second direction and irradiates the split laser pulse. The light receiving unit detects reflected light. Accordingly, it is possible to irradiate light to a wide range by a light source having a relatively small divergent angle. | 12-31-2015 |
20150381847 | IMAGE READING APPARATUS - An image reading apparatus includes a casing configured to cut off ambient light and have a casing-opening portion at the bottom, an image capturing unit configured to perform image capturing of a medium that is exposed to an inside of the casing in the casing-opening portion, a plurality of light sources configured to be arranged on the inside of the casing and emit light to different areas on horizontal plane in the casing-opening portion, a control unit configured to control at least the image capturing unit and the plurality of light sources, and an attachment configured to be detachably attached to the bottom of the casing. The attachment surrounds the casing-opening portion in a state in which the attachment is attached to the casing and cuts off the ambient light together with the casing in a state in which the bottom is placed on the medium. | 12-31-2015 |
20160003673 | OPTO-ELECTRONIC CONVERTER, IMAGE READING DEVICE, AND IMAGE FORMING APPARATUS - An opto-electronic converter includes a plurality of light-receiving elements configured to convert light of different colors into analog signals, each of the analog signals representing a pixel, an amplifier unit configured to amplify the analog signals, into which the light is converted by the light-receiving elements, in each pixel group, the pixel group including a plurality of the light-receiving elements, the plurality of light-receiving elements converting light of different colors, and a gain switch unit configured to switch, for each of the light-receiving elements included in the pixel group, a gain of the amplifier unit to a gain determined in advance depending on a color of the light converted by the light-receiving element. | 01-07-2016 |
20160014294 | LIGHT GUIDE AND IMAGE READING APPARATUS | 01-14-2016 |
20160057308 | LIGHT GUIDE, ILLUMINATING DEVICE AND IMAGE READING APPARATUS - A light guide has a guide portion extending in a first direction. Light entering the guide portion through a first end is guided to a reading position. The guide portion has prisms provided on a bottom surface to be arranged in the first direction, and a turn-back member configured to turn light coming to a second end of the guide portion back toward the first end. Each of the prisms includes a first total-reflecting surface facing to the first end and a second total-reflecting surface facing to the second end. With respect to at least one of the prisms located within an area extending parallel to the first direction from the second end toward the first end by a predetermined distance, the angle of the first total-reflecting surface to the bottom surface is greater than the angle of the second total-reflecting surface to the bottom surface. | 02-25-2016 |
20160134776 | ORIGINAL READING APPARATUS FOR READING IMAGE OF AN ORIGINAL - A light guide includes a plurality of boss portions. A round hole portion is provided near the center of a base member for fixing the light guide, and slit portions are provided on both ends thereof. The round hole portion supports one boss portion in both the longitudinal direction and the lateral direction of the light guide. The slit portions support boss portions in the lateral direction of the light guide, but are free in the longitudinal direction of the light guide. That is, the center of the light guide is fixed from both directions, and thus both ends of the light guides can expand away in the longitudinal direction. This cuts the influence of expansion by half. | 05-12-2016 |
20180027142 | SCANNER | 01-25-2018 |