| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 347247000 | Driving circuitry | 36 |
| 20090073252 | TEMPERATURE COMPENSATION FOR FULL-WIDTH ARRAYS WRITE HEADS - A method and system for compensating for temperature changes is disclosed that includes a mounting bar, a plurality of imaging chips adaptively mounted on the mounting bar, each imaging chip including a plurality of imaging elements, and a temperature determiner to determine a temperature of the mounting bar. A control module enables and disables at least one imaging element based on the determined temperature of the mounting bar. | 03-19-2009 |
| 20090109274 | IMAGE FORMING APPARATUS - Problems, which occur when printing is performed on the surface of a rotating disk using by using a print head arranged in the outer circumferential direction from the center of rotation, are resolved. Light emitting sections performs exposure in synchronism with rotational driving for rotating a medium, and pixels which are adjacent in the circumferential direction of rotation are exposed in a partially superimposed fashion by making the amount of movement in the circumferential direction along which the outermost circumference of the medium moves between exposures smaller than the width in the circumferential direction of the pixels formed by exposure. In a plurality of light emitting sections provided in an optical unit, the quantity of light for exposing a pixel on the inner circumferential side in the radial direction is set to be smaller than the quantity of light for exposing a pixel on the outer circumferential side in the radial direction for the respective exposure positions for the medium. Therefore, difference in the tonal shading caused by superposition is reduced by lowering the density created by each exposure in respect of the pixels on the inner circumferential side in the radial direction where there is a large overlap between exposures. | 04-30-2009 |
| 20090167836 | Light emitting apparatus, optical printhead, and image forming apparatus - A light emitting apparatus includes optical thyristors, a driver circuit that supplies a drive current to the thyristors so that the thyristors emit light, and a control circuit that controls the thyristors. Each thyristor includes an anode, a cathode connected to the ground, and a gate. The thyristor emits light when the drive current flows therethrough. The control circuit controls the gate, causing a control current to flow from the anode to the gate to turn on the thyristors. The control circuit applies a control voltage to the gate, the control voltage being higher than a voltage appearing across the gate and the cathode when the thyristor remains turned on. | 07-02-2009 |
| 20090315970 | DRAWING APPARATUS AND METHOD, AND COMPUTER PROGRAM - A drawing apparatus ( | 12-24-2009 |
| 20100045768 | Exposure Head, Method of Controlling Exposure Head, and Image Forming Apparatus - An exposure head includes a substrate in which a first light emitting device and a second light emitting device are arranged in a direction parallel or substantially parallel to a moving direction of an exposed side to the imaged light. An imaging optical system is provided for imaging light from the first light emitting device and the second light emitting device to expose the exposed side. A control unit selects one light emitting device from the first light emitting device and the second light emitting device, allowing the selected light emitting device to emit light in accordance with a driving signal, and allowing the non-selected light emitting device to not emit light. | 02-25-2010 |
| 20100045769 | EXPOSURE APPARATUS - In an exposure apparatus employing an over filled optical system, the light quantity distribution on a scanning plane is kept nearly constant for a plurality of scanning light quantities. It selects the light quantity of the light beam irradiated onto the photosensitive body from a plurality of levels, and sets the light quantity selected. According to the light quantity, it selects one of a plurality of correction current profiles, and supplies a light source with a current passing through the correction based on the correction current profile selected. Since the light quantity of the light beam irradiated onto the photosensitive body is corrected by the correction current, the light quantity of the light beam on the photosensitive body becomes nearly constant in the scanning direction. | 02-25-2010 |
| 20100141731 | LINE PRINTER HEAD AND IMAGE FORMING APPARATUS INCLUDING THE SAME - Disclosed is a line printer head that exposes an object, e.g., a photoconductor body, of an image forming apparatus. The line printer head includes multiple light emitting devices in a linear arrangement along a main scanning direction. Each light emitting device includes a light emitting region, a first electrode on a lower portion of the light emitting region, a second electrode on an upper portion of the light emitting region and an optical waveguide disposed above the second electrode and configured to guide light generated by the light emitted region such that the light is output through an opening of the optical waveguide. The integrated circuit is configured to drive the light emitting devices and has multiple output terminals, each of which is connected to the first electrode of the respective corresponding one of the light emitting devices. The light emitting devices and the integrated circuit are formed on the same substrate. | 06-10-2010 |
| 20100225731 | Exposure Head, Image Forming Apparatus, and Image Forming Method - An exposure head includes a light emitting segment that emits light; an electrical load that is electrically connected to a circuit in which a current to be supplied to the light emitting segment flows; and a current supply controller that supplies a first current to the light emitting segment to cause the light emitting segment to emit light and supplies a second current to the electrical load during the time when the current supply controller blocks the supply of the first current to the light emitting segment. | 09-09-2010 |
| 20100231684 | LIGHT BEAM NUMBER CHANGEABLE OPTICAL WRITING APPARATUS - An optical writing apparatus includes a light source device that includes a VCSEL having an alignment of at least two channels in a sub scanning direction configured to emit plural light beams in a block. A deflector deflects the plural light beams toward an image bearer that forms an image by changing a line speed of image formation. A control device decreases a number of light beams by turning off a prescribed same number of the channels symmetrically from the both ends of the alignment in accordance with the line speed. | 09-16-2010 |
| 20100245530 | Optical Disk Image Drawing Method - An optical disk image drawing method includes: rotating the optical disk by a spindle motor; reading a predetermined information recorded on a track of a data recording layer; detecting a predetermined position on the track based on the read predetermined information; measuring a position of the spindle motor in a rotating direction using the detected predetermined position as a reference position; changing a focus position of the laser beam to the image drawing layer; starting forming the visible image on the image drawing layer from a predetermined position of the spindle motor in the rotating direction relative to the reference position based on the measured position of the spindle motor in the rotating direction; and sequentially moving an optical pick-up in the radial direction synchronously with the rotation of the spindle motor to proceed to form the visible image. | 09-30-2010 |
| 20100289866 | INFORMATION PROCESSING DEVICE, LASER IRRADIATION DEVICE, DRAWING INFORMATION GENERATING METHOD, CONTROL SYSTEM, AND PROGRAM - An information processing device for generating a piece of drawing information of a line image, including a shape information storing part to store pieces of shape information for respective combinations of a thickness and a size of a line image, a thickness information obtaining part to obtain a piece of thickness information, a code information obtaining part to obtain a piece of code information of a target image, a size information obtaining part to obtain a piece of size information of a target image, a shape information selecting part to select a piece of shape information out of pieces of shape information for each character based on the thickness information and the size information, and a drawing information generating part to read out the selected shape information from the shape information storing part and to generate a piece of drawing information from the shape information. | 11-18-2010 |
| 20110149009 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus forms a pattern image on a sheet by irradiating a photosensitive body with laser lights emitted from first to eighth laser light sources based on timing set in a displaying/setting section. As the pattern image, a combined pattern image in which a plurality of combined images are arranged continuously in the sub scanning direction, in each of which combined images two first line images are arranged apart from each other in the main scanning direction, and the second line image is arranged therebetween. | 06-23-2011 |
| 20110149010 | SYSTEMS AND METHODS FOR ALIGNMENT OF LASER PRINTERS - Laser printers are plagued with an assortment of alignment issues. In color laser printers the issues are exacerbated. Variations in distance from the mirror to the drum can lines in different color planes to vary in size. Variations in angles in the facets of the mirror can cause alignment issues between lines. Even lack of synchronization between the dot clock and start of line indication can cause misalignment between rows. In addition, a cosine distortion occurs due to the non-constant linear velocity of the laser scan of a single line. A very high speed master clock can drive the laser scanning unit. By using a very high speed clock, the control circuitry has the resolution to compensate for many of these distortion types, by appropriately counting clock cycles and indicating such to the laser modulator. | 06-23-2011 |
| 20110175974 | SYSTEMS AND METHODS FOR PROCESSING EGGS - A method for laser marking eggs is disclosed which comprises using a machine vision system to monitor laser marking of eggs by a laser marking system, and adjusting one or more parameters of the laser marking system based upon determinations made by the machine vision system. Additionally, a system for laser marking eggs is disclosed which comprise a machine vision system and one or more control elements. The machine vision system is configured and arranged to monitor laser marking of eggs by a laser marking system, and the one or more control elements are configured and arranged to adjust one or more parameters of the laser marking system based upon determinations made by the machine vision system. Further, a system for laser marking eggs is disclosed comprising multiple laser marking apparatuses and a central server. The laser marking apparatuses are configured and arranged to perform laser marking jobs queued by local computers for laser marking eggs being packed by egg packing stations. The central server is configured to distribute the laser marking jobs to the local computers. In addition, a method is disclosed for controlling laser marking jobs which comprises distributing the laser marking jobs from a central computer to local computers responsible for queuing laser marking jobs to one or more laser marking apparatuses configured and arranged to laser mark information on eggs. | 07-21-2011 |
| 20110205327 | RECORDING HEAD AND IMAGE FORMING APPARATUS - A recording head including: a non-electrically conductive support member; a base board provided above the support member, the base board being provided with light emitting elements for forming an image on a recording medium, a drive section for causing the light emitting elements to emit light, a first earth connection member provided at an end portion of the base board, and a second earth connection member provided at a location of a connection member, having one end connected to a control section for controlling the drive section and another end connected to drive section; a conducting member provided at a predetermined place relative to the support member and connected to an earth; a first conduction section conducting between the conducting member and the first earth connection member; and a second conduction section conducting between the conducting member and the second earth connection member. | 08-25-2011 |
| 20110228037 | LASER DRIVING UNIT AND IMAGE FORMING APPARATUS - A laser driving unit drives a semiconductor laser apparatus including a plurality of light sources, includes a light detecting part to detect light emissions from the light sources, a driving current generator to generate a driving current based on an input signal, an auxiliary driving current generator to generate an auxiliary driving current in an initial time period of an ON-time of the driving current, and an auxiliary current set part to set an auxiliary amount of the auxiliary driving current to be added to the driving current, for each of the light sources, based on a difference between the light emissions detected by the light detecting part and a target light emission of the light sources. | 09-22-2011 |
| 20110261138 | REFERENCE VOLTAGE GENERATION CIRCUIT, DRIVE DEVICE, PRINT HEAD, AND IMAGE FORMING APPARATUS - A reference voltage generation circuit includes a first current-mirror circuit including a first MOS transistor connected to a first power source and a second MOS transistor of the first conductive type connected to the first power source; a second current-mirror circuit including a third MOS transistor and a fourth MOS transistor; a first resistor connected to the first node; a first bipolar transistor having a collector connected to the first resistor, an emitter connected to a second power source, and a base connected to the first node; a second bipolar transistor having a collector connected to the second node, an emitter connected to the second power source, and a base connected to the first bipolar transistor; a fifth MOS transistor connected between the first power source and an output terminal; and a third resistor connected between the output terminal and the second power source. | 10-27-2011 |
| 20110285805 | DRIVING DEVICE, PRINT HEAD AND IMAGE FORMING DEVICE - A driving device controls light emitting thyristors that each include a scanning circuit sequentially driving each of the plural stages of the light emitting thyristors by controlling scanning thyristors. Herein, terminals of each odd numbered stage of the scanning thyristors is commonly connected to a first clock terminal, and terminals of each even numbered stage of the scanning thyristors is commonly connected to a second clock terminal. A control terminal of a first stage scanning thyristor is connected to the second clock terminal, and another control terminal of a previous scanning thyristor is connected to the second control terminal of a subsequent scanning thyristor. | 11-24-2011 |
| 20120026273 | FOCUSING A LASER ON A LABEL SURFACE OF AN OPTICAL DISC - A method, apparatus, and medium for determining actuator signals for focusing a laser on a label surface of an optical disc. A plurality of virtual angular sectors are defined on the label surface. A single rotation of the disc is performed. During the rotation, the focus of the laser is sinusoidally swept from a baseline once per sector. During the rotation, a SUM signal indicative of a degree of focus of the laser on the label surface is measured at a plurality of angular positions of each sector. The actuator signals are derived from the measured SUM signals. | 02-02-2012 |
| 20120081499 | PRINT HEAD AND IMAGE-FORMING APPARATUS - According to one embodiment, a print head includes first and second substrates, an OLED array and a drive circuit. The first substrate extending in a first direction and has a main surface including first to third regions. The first region extends in the first direction. The second and third regions are arranged in a second direction crossing the first direction with the first region interposed between the second and third regions. The OLED array includes first electrodes arranged above the first region, an organic emitting layer positioned above the first electrodes, and a second electrode positioned above the organic emitting layer. The drive circuit is configured to supply drive currents to the first electrodes and includes a first circuit positioned above the third region and a second circuit positioned above the third region. | 04-05-2012 |
| 20120188328 | LIGHT SCANNING DEVICE CAPABLE OF EXECUTING AUTOMATIC LIGHT AMOUNT CONTROL AND IMAGE FORMING APPARATUS EQUIPPED WITH THE SAME - A light scanning device that performs rapid scanning synchronization timing detection to thereby enable automatic light amount control to be executed rapidly and with high accuracy. A light amount sensor disposed on a scanning line of the laser light receives the laser light. A controller controls the timing of emission by the laser emitting device and a light amount of the laser light based on image data, according to an output from the light amount sensor. A temperature sensor detects the temperature of the laser emitting device or in the light scanning device. A storage section stores data indicative of a relationship between temperature, current supplied to the laser emitting device, and light amount. A controller controls current to be supplied to the laser emitting device based on temperature detected by the temperature detecting unit and data stored in the storage section | 07-26-2012 |
| 20120212565 | EXPOSURE APPARATUS - In an exposure apparatus employing an over filled optical system, the light quantity distribution on a scanning plane is kept nearly constant for a plurality of scanning light quantities. It selects the light quantity of the light beam irradiated onto the photosensitive body from a plurality of levels, and sets the light quantity selected. According to the light quantity, it selects one of a plurality of correction current profiles, and supplies a light source with a current passing through the correction based on the correction current profile selected. Since the light quantity of the light beam irradiated onto the photosensitive body is corrected by the correction current, the light quantity of the light beam on the photosensitive body becomes nearly constant in the scanning direction. | 08-23-2012 |
| 20120249717 | Pulse-Modulation-Signal Generating Device, Light-Source Device, and Optical Scanning Device - A high-frequency clock generating circuit generates a plurality of high-frequency clock signals having different phases. A modulation-signal generating circuit generates a pulse modulation signal based on transition timing data including data pertaining to a turn-on timing at which a state of a light source is changed from a turn-off state to a turn-on state and a turn-off timing at which the state of the light source is changed from the turn-on state to the turn-off state by inputting any one of the high-frequency clock signals for a predetermined period including the turn-on timing and the turn-off timing. | 10-04-2012 |
| 20120256998 | LIGHT EMITTING DEVICE, PRINT HEAD, AND IMAGE FORMING APPARATUS - A light emitting device includes light emitting chips, a mount board on which the light emitting chips are mounted, and a buffer amplifier. Each of the light emitting chips includes light emitting elements and transfer elements. The transfer element sequentially specify, by sequentially entering an on-state, the light emitting elements as targets for control of illumination or non-illumination. Each of the transfer elements is provided for a corresponding one of the light emitting elements. The buffer amplifier is provided on the mount board, and outputs a transfer signal on the basis of an input transfer signal. The transfer signal is used to sequentially set the transfer elements, which are included in each of the light emitting chips, to be in the on-state. | 10-11-2012 |
| 20120327170 | OPTICAL RECORDING APPARATUS WITH LIMITING MEMBERS - An optical recording apparatus includes a traverse, a control circuit board, a shield substrate and an flexible flat cable (FFC). The traverse includes a spindle motor for rotating an optical disc and an optical pickup head for reading and/or writing the optical disc, the optical pickup head moves along a radial direction of the optical disc when reading and/or writing the optical disc. The FFC electrically connects the optical pickup head and the control circuit board and transmits signals between them, and a portion of the FFC adjacent to the second end is bent to facing the shield substrate. The shield substrate includes at least two limiting members, and the at least two limiting members are positioned at two opposite sides of the portion of the FFC facing the shield substrate to enable the portion of the FFC facing the shield substrate to move along the first direction. | 12-27-2012 |
| 20130027501 | IMAGE FORMING APPARATUS THAT USES LASER BEAM - An image forming apparatus which is capable of properly correcting a scanning length while suppressing occurrence of moiré fringes to reduce degradation of image quality. A laser drive device generates laser beam by driving a laser beam source on an auxiliary pixel basis according to a lighting pattern that defines a pattern for turning on or off the laser beam on an auxiliary pixel basis. A CPU sets the scanning magnification of a photosensitive member in a main scanning direction. Further, the CPU sets the lighting pattern, based on the image data, according to the set scanning magnification, pixel by pixel basis such that the lighting pattern becomes aperiodic in a sequence of pixels. The CPU outputs the lighting pattern to the laser drive device. | 01-31-2013 |
| 20130063536 | LIGHT SOURCE CONTROL APPARATUS AND IMAGE FORMING APPARATUS - A light source control apparatus which controls, based on image data input, light emission of a light source which forms an electrostatic latent image on an image bearing body in an electrophotographic image forming apparatus is disclosed, including a pattern generating unit which generates an internal pattern for position aligning and concentration correcting according to the image data; and a mirroring processing unit which performs a process of mirroring the image data and the internal pattern at a later stage of the pattern generating unit. | 03-14-2013 |
| 20130135424 | RECORDING MEDIUM IMAGING DEVICE AND IMAGE FORMING APPARATUS - There is provided a recording medium imaging device capable of properly selecting pixels used for determining the kind of the recording medium from the captured surface image to remove pixels from which the surface property of the recording medium cannot be properly determined because the pixels extremely high in light quantity are affected by some sort of dirt or scratches in determining the kind of a recording medium. This allows the determination of kind of the recording medium based on the normally captured surface image to reduce the decrease in accuracy in determining the kind of the recording medium. | 05-30-2013 |
| 20130201271 | INFORMATION PROCESSING APPARATUS, SYSTEM, AND INFORMATION PROCESSING METHOD - An information processing apparatus generates a scanning instruction to send to a device for forming visible information by scanning a recording medium with a laser beam. The information processing apparatus includes an extracting unit for reading line information in which a scanning speed and a radiation output value of the laser beam are registered in advance for each line, and extracting all lines which are overlapping a target line in a line direction and positioned within a predetermined distance from the target line; and an adjusting unit for performing at least one of removing an extracted line from a scanning object, changing the radiation output value of an extracted line to a value lower than an initial value, and changing the scanning speed of an extracted line to a value greater than an initial value. | 08-08-2013 |
| 20130286151 | VIBRATING ELEMENT, OPTICAL SCANNING DEVICE, AND IMAGE FORMING DEVICE AND IMAGE PROJECTION DEVICE USING SAME - The oscillation element according to the present invention includes a torsion bar mounted on a base, and an oscillating member having a light reflection surface for reflecting light from a light source, which is fixed on the torsion bar protruding from the base. The oscillating member oscillates about a longitudinal axis of the torsion bar with an elastic deformation of the torsion bar, thereby deflecting the light that reflects at the light reflection surface in a direction intersecting the longitudinal axis. The oscillating member has two plates that are joined together so as to sandwich the torsion bar. On joining surfaces of the plates are provided with grooves for receiving the torsion bar, respectively. The plates have a symmetrical shape that the longitudinal axis serves as the axis of symmetry. | 10-31-2013 |
| 20130307917 | POWER SUPPLY APPARATUS AND IMAGE FORMING APPARATUS - The power supply apparatus for obtaining a direct current from an alternating voltage source includes a first DC/DC converter for outputting a first direct current and a second DC/DC converter for a second direct current lower than the first direct current from the first DC/DC converter, and the output voltage of the first DC/DC converter is changed to a lower direct current and the second DC/DC converter is driven in a continuously-conducting state. | 11-21-2013 |
| 20140118459 | IMAGE FORMING APPARATUS - An image forming apparatus according to the embodiment includes a plurality of print heads and a processor. Each of the print heads includes a plurality of light emitting devices and a storing unit configured to store light amount correction data of each of the light emitting devices. The processor acquires each of the light amount correction data stored in the storing units of the print heads, verifies whether each of the acquired light amount correction data is regular data, and, if the light amount correction data is regular data, outputs the regular data to the print head at an acquisition source and, if the light amount correction data is irregular data, acquires the light amount correction data from the print head at the acquisition source of the irregular data again and performs the verification concerning the light amount correction data. | 05-01-2014 |
| 20140168343 | WRITING CONTROLLING APPARATUS, IMAGE FORMING APPARATUS, AND COMPUTER PROGRAM PRODUCT - The invention is concerning the writing controlling apparatus that includes an acquiring unit configured to acquire a plurality of light amounts of a light source driven while changing an input current in non-effective scanning periods during which an image carrier is not irradiated with light from the light source, as a plurality of output results; a detecting unit configured to detect characteristics of the light source using the output results thus acquired; and a correcting unit configured to correct a current to be applied to the light source based on the characteristics thus detected. | 06-19-2014 |
| 20140313274 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING SYSTEM, COMPUTER PROGRAM AND COMPUTER-READABLE MEDIUM - An information processing apparatus that generates a drawing command for drawing visual information by irradiating laser light on a recording medium includes a line information obtaining unit that obtains line information of a line including a starting point of the line; a line segment dividing unit that obtains a drawing distance to be drawn over a predetermined time period that must elapse before an impact of residual heat from drawing an adjacent line can be disregarded and divides at least a portion of the line from the starting point to the drawing distance into a line segment having a predetermined length; and a control factor adjusting unit that adjusts a control value of a laser control factor that affects a density of the line segment such that the control value for the line segment that is affected by a greater amount of residual heat is adjusted to a greater extent. | 10-23-2014 |
| 20150009272 | Laser Marking Using Scalable Fonts - A system directs a laser beam to mark a material with an alphanumeric code. Character and quality information corresponding to a mark to apply to the material with the laser beam can be received, a font definition that specifies character segments can be obtained, a set of multiple spaced locations can be generated from the character segments in accordance with the character and quality information, and the material can be marked with the laser beam by directing the laser beam to dwell at the locations and move between the locations without deactivating the laser beam. | 01-08-2015 |
| 20150116445 | DRIVING CIRCUIT FOR LIGHT EMITTING ELEMENT, EXPOSURE HEAD, AND IMAGE FORMING APPARATUS - Each data line includes base parts covering contact holes and line parts extending in an array direction of pixel circuits and connecting adjacent base parts to each other. The line parts have a smaller width in a direction perpendicular to the array direction than the base parts and are connected to the base parts while being offset in the direction perpendicular to the array direction from each other on both sides of at least two base parts that include first and second base parts. A connection position of the first base part with the line part on one side among both sides of the base units is located on the pixel circuit side with respect to the other side, and a connection position of the second base part on the one side is located on an opposite side to the pixel circuit side with respect to the other side. | 04-30-2015 |
