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| 20120112406 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - The sheet conveying apparatus includes first to third pairs of skew conveying rollers conveying a sheet, a reference portion, in which the reference portion corrects a skew feeding of the sheet by abutting a side edge of the sheet conveyed by the first to third pairs of skew conveying rollers against a reference surface placed in parallel with the sheet conveying direction, and a guide groove provided on the reference portion, which guides the side edge of the sheet skew-conveyed by the first to third pairs of skew conveying rollers to the reference surface, wherein a vertical width of an opening portion of the guide groove in an upstream area of the reference portion is wider than that of the guide groove in a downstream area of the reference portion, in the sheet conveying direction. | 05-10-2012 |
| 20140233968 | IMAGE FORMING APPARATUS THAT FORMS A TEST PATTERN AND CARRIES OUT CORRECTION - An image forming apparatus, includes an image forming unit configured to form a reference pattern and a test pattern on a sheet, a measurement unit configured to detect the reference pattern formed on the sheet and to measure the test pattern formed on the sheet, and a control unit configured to control a measurement timing of the test pattern by the measurement unit according to a detection interval between two reference patterns detected by the measurement unit. | 08-21-2014 |
| 20150108709 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus comprising: a conveying rotating member which is rotatably driven by a driving portion conveys a sheet; a cylindrical follower rotating member which is disposed to face the conveying rotating member; a support member which passes through a hollow portion of the follower rotating member and supports the cylindrical follower; a pressure portion which pressurizes the support member to the conveying rotating member so that the follower rotating member comes into contact with the conveying rotating member; and a bearing portion which is disposed between an outer peripheral surface of the support member and an inner peripheral surface of the follower rotating member and is disposed on an inner side in an axial direction of the support member from an end portion of the conveying rotating member, and rotatably supports the follower rotating member with respect to the support member. | 04-23-2015 |
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| 20120327049 | VIDEO PROJECTION DEVICE AND VIDEO PROJECTION METHOD - There are provided a video projection device and a video projection method which can realize both a guarantee of safety and an increase in luminance of a screen. The video projection device includes: a laser light source unit which emits a laser; a laser scanning unit which is provided with one or more scanning directions and project video by performing a reciprocating scan of the laser with respect to a scanning direction with the highest scanning frequency; and a control unit which controls operations of the laser light source unit and the laser scanning unit depending on a video signal so that a scanning angle when emission of the laser in an outgoing path is stopped is different from a scanning angle when emission of the laser in a return path is started with respect to the scanning direction along which the reciprocating scan is performed. | 12-27-2012 |
| 20130222775 | IMAGE PROJECTION DEVICE AND IMAGE PROJECTION METHOD - An image projection device includes a number-of-times measurement section that measures the number of passage times that the scanned laser light has passed through the light radiation members, a time measurement section that is triggered to measure an elapsed time when the number-of-times measurement section measures the number of passage times, an arithmetic section that calculates an initial timing at which the laser light source section starts outputting the laser light based on the measurement results of the number-of-times measurement section and the time measurement section, and a signal generation section that generates the switch signal at the initial timing calculated by the arithmetic section. | 08-29-2013 |
| 20130229580 | MULTI-PROJECTION DISPLAY SYSTEM AND METHOD OF ADJUSTING BRIGHTNESS THEREOF - A multi-projection display system is provided with a plurality of sensor units corresponding to projector units. The sensor units detect brightness for each color in a projected image that is projected on a screen and supply the detection results. The projector unit generates a brightness correction table on the basis of the image signal of a specific picture element of the projected image realized by an adjacent projector unit and on the basis of the brightness of the specific picture element of the projected image of the adjacent projector unit that is detected by a sensor unit for matching the brightness of the image projected by its own projector unit with that of the adjacent projector unit, refers to the brightness correction table to correct brightness for each color of the image signals that are received as input, and projects onto a screen the light of each color in accordance with the corrected image signals. | 09-05-2013 |
| 20130229630 | PROJECTOR AND CONTROL METHOD - A projector includes a screen which has color stripes that are periodically arranged and that generate visible light corresponding to incident light. A laser light source section emits a light beam. A laser scanning section scans the light beam on a region of the color stripes arranged on the screen. A light detection section detects feedback light radiated from the screen corresponding to the light beam. A control section adjusts a light emission timing and a light emission period of the laser light source section based on a detection result of the light detection section and causes the laser light source section to emit the light beam such that light pulses enter the individual color stripes. | 09-05-2013 |
| 20130278906 | PROJECTOR AND CONTROL METHOD - A projector includes a screen having a periodic array of color stripes for producing visible light depending on incident light, a light source that remits a light beam, a projection unit that scans an area of the screen where the color stripes are disposed, with the light beam in a direction across the color stripes, to display an image on the screen, a detector that detects the visible light from each of the color stripes as a feedback light pulse, and a controller that adjusts a start-of-emission timing of the light source based on a start-of-detection timing at which the feedback light pulse is detected by the detector and a detection period during which the feedback light pulse is detected by the detector, and controlling the light source to emit the light beam in order to apply light pulses to the color stripes within boundaries thereof. | 10-24-2013 |
| 20130335390 | Multi-projection Display and Brightness Adjustment Method Thereof - A multi-projection display includes: a plurality of projector units; a plurality of optical sensors that are provided corresponding to each of the projector units; and a main control unit that both causes adjustment images to be projected by each of the projector units and vertically synchronizes each projected adjustment image. Each projector unit acquires by a respective optical sensor brightness values of the picture elements that are adjacent between the adjustment image that is projected by the projector unit and the adjustment images that are projected by other projector units and adjusts the brightness of the projected image based on the differences in the acquired brightness values. | 12-19-2013 |
| 20130335641 | Projection System, Projection-type Image Display Device, and Multi-Projection System - A projection screen includes: phosphor regions arranged cyclically in an in-plane direction of a display region; a plurality of black stripes and reference black stripes that partition the display region into the phosphor regions; and an optical information formation unit that is provided in a specific position within the display region and that generates readable optical information. | 12-19-2013 |
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| 20080218705 | Projection display device - A projection display device comprises a main body cabinet, a projection lens section to which light modulated by a light modulating element entered, and a mirror section for reflecting the light emitted from the projection lens section to a projection plane. A level difference depending on an arrangement shift of the projection lens section and the mirror section is formed on a second side surface facing a first side surface having light projection port of the main body cabinet. Furthermore, the projection display device comprises a level difference correction section for directing the light from the mirror section in a desired direction by correcting the level difference, when the main body cabinet is planed on a plane to be placed, the second side surface facing the plane to be placed. | 09-11-2008 |
| 20080218707 | Projection display device and stand used for the projection display device - A projection display device accommodates, in a main body cabinet, a projection lens section to which light modulated by a light modulating element is entered, and a mirror section that reflects light transmitted through the projection lens section and directs the light to a projection plane. When the main body cabinet is mounted on a mounting plane so that the light transmitted through the projection lens section may get away from the mounting plane, a holding member which holds the main body cabinet in a upright state with regard to the mounting plane is mounted on the main body cabinet. | 09-11-2008 |
| 20110069242 | PROJECTION DESPLAY APPARATUS - A projection display apparatus ( | 03-24-2011 |
| 20110075117 | PROJECTION DISPLAY DEVICE - A projection display device includes a light source; an optical system which modulates light from the light source, and emits the modulated light; a projecting portion which enlarges and projects the light emitted from the optical system; a cabinet which houses the light source, the optical system, and the projecting portion; an opening which is formed in one surface of the cabinet to allow mounting or dismounting of an optical component constituting the optical system, or the light source; a cover which covers the opening; and a holding portion which holds the cover in such a manner that the cover is allowed to slide in a direction along the one surface. | 03-31-2011 |
| 20110279792 | PROJECTION DISPLAY DEVICE - A projection display device is provided with an adjustable leg which adjusts an inclination of the main body cabinet. The adjustable leg includes a leg portion whose projection amount from the bottom surface is changed, and a foot portion which is contacted with an installation plane of the projection display device, the adjustable leg being expandable and contractible from a reference length position at which the main body cabinet is placed in parallel to the installation plane. The bottom surface of the main body cabinet has a recess portion which is configured so as to guide in and out of the foot portion, as the adjustable leg is contracted and expanded. The foot portion has an index portion which is set to the same height as the height of the bottom surface with respect to the installation plane, when the adjustable leg is positioned at the reference length position. | 11-17-2011 |
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| 20110317166 | OPTICAL MEASUREMENT DEVICE - An optical measurement device is adapted to measure characteristics of a measurement targeted fluid based on a transmitted inspection light. The device comprises a cell having an internal space for accommodating the measurement targeted fluid to flow therein and having a pair of opposing through holes for transmitting the inspection light, each of the through holes sealed with a transparent member. The device includes a projection optical system member having a port for projecting the inspection light and a light-receiving optical system member having a port for receiving the inspection light transmitted through the internal space. A base member is provided for supporting the cell, the projection optical system member, and the light-receiving optical system member in a configuration with gaps between the cell and the respective optical system members to accommodate movement in a predetermined range along a direction perpendicular to an optical axis of the inspection light. | 12-29-2011 |
| 20130273670 | Concentration Measuring Device used in Manufacturing Process - A semiconductor manufacturing system comprises a main body that exclusively flows a first fluid that is used in a manufacturing process and a second fluid whose concentration is known, and that outputs a state signal showing whether or not the fluid flowing in the flow channel is the second fluid and a concentration measuring device having a concentration measuring part that measures a concentration of a predetermined component in the fluid flowing in the flow channel, a state signal receiving part that receives the state signal from the main body, and a correcting part that obtains a reference measurement value as being a measurement value measured by the concentration measuring part during a period while it is judged that the second fluid flows in the flow channel by the state signal and that corrects the concentration measuring part based on the reference measurement value. | 10-17-2013 |
| 20140146317 | OPTICAL ANALYZER - The present invention includes: an optical fiber being provided either of between a light source and a measurement cell and between the measurement cell and a light detection part; and light path switching means adapted to achieve switching between a measurement cell passage state in which a light path formed by light transmission means passes through the measurement cell and a measurement cell non-passage state in which the light path formed by the light transmission means passes through a region different from the measurement cell, wherein calibration processing for a first calibration with a long calibration cycle is performed in the measurement cell passage state, and calibration processing for a second calibration with a short calibration cycle is performed in the measurement cell non-passage state. | 05-29-2014 |
| 20140185049 | SPECTROSCOPIC ANALYSIS METHOD AND SPECTROSCOPIC ANALYZER - The present invention improves an S/N ratio and light intensity resolution provided by an A/D converter, and an analyzer includes: a measurement cell irradiated with light during sample measurement; a dimming element irradiated with the light during reference measurement; an amplifier configured to amplify an analog light intensity signal outputted from a light detector; an A/D converter configured to convert the analog light intensity signal into a digital light intensity signal; and an arithmetic device configured to calculate absorbance using a digital sample light intensity signal outputted from the A/D converter during the sample measurement and a digital reference light intensity signal outputted from the A/D converter during the reference measurement, wherein an amplification factor of the amplifier is set such that the analog reference light intensity signal and the analog sample light intensity signal become less than or equal to a full scale of the A/D converter. | 07-03-2014 |
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| 20150353104 | TRACK-GUIDED VEHICLE, AND CAR BODY TILT CONTROL METHOD THEREFOR - This track-guided vehicle is provided with a car body, and a bogie that supports the car body from the bottom, and has a frame capable of pivoting around an axis perpendicular to a track. The bogie is provided with: a car body tilting part that tilts the car body to the left and right in the direction of travel; a detection part that detects the amount of pivot of the frame; and a tilt control part that allows the car body to be tilted by the car body tilting part on the basis of the amount of pivot detected by the detection part. | 12-10-2015 |
| 20150353106 | GUIDE-RAIL TRACK VEHICLE, AND METHOD FOR CHANGING DISTANCE BETWEEN GUIDANCE WHEELS - This guide-rail track vehicle, which travels on a track, is provided with: a carbody disposed at the top of a vehicle; and a running device that supports the carbody from below, and has a guide frame to which at least a pair of guide wheels, which are guided by a guide rail disposed on the track, are attached. Moreover, the guide frame has: a pair of beam members that are capable of sliding in the width direction of the track, and to which the guide wheels are attached; a rotating part capable of rotating around a first axis in the direction of travel; and a transmission part that converts the rotation of the rotating part to motion in the width direction, and moves the guide wheels in a symmetrical fashion by synchronizing the pair of beam members. Thus, the guide-rail track vehicle has a running device that allows the distance between the guide wheels to be changed. | 12-10-2015 |
| 20160060835 | SNOW REMOVAL BRUSH, VEHICLE, COMBINATION VEHICLE, AND TRACK TRANSPORTATION SYSTEM - A snow removal brush includes a brush rotary shaft that is disposed on each of opposite lateral surfaces of a vehicle body traveling along a track and in a vehicle width direction of the vehicle body and is supported by the vehicle body to be rotatable about an axis extending in a direction intersecting a track surface of the track, and a brush part that protrudes from an outer circumferential surface of the brush rotary shaft to a radial outer side. The brush part is formed to come into contact with trolley wires provided for the track and supplying electricity to the vehicle body. | 03-03-2016 |
| 20160069033 | SNOW REMOVAL DEVICE, VEHICLE, AND TRACK TRANSPORTATION SYSTEM - A snow removal device includes: a brush rotary shaft that is mounted on a vehicle body traveling along a track and in front of a running wheel of the vehicle body and that is rotated in a direction opposite to the rotation direction of the running wheel; a travel brush part that protrudes radially outward from an outer circumferential surface of the brush rotary shaft and comes into contact with a runway of the track with which the running wheel is in contact; and a brush pressing part that presses the travel brush part toward the runway. The travel brush part is provided in a spiral region formed on the outer circumferential surface of the brush rotary shaft in a spiral manner extending toward an axis direction in which the axis extends as going toward a circumferential direction of the brush rotary shaft. | 03-10-2016 |
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| 20110133718 | Semiconductor Device and Power Conversion Apparatus Using the same - A semiconductor device provides a gate electrode formed on a lateral face of a wide trench, and thereby the gate electrode is covered by a gate insulating layer and a thick insulating layer to be an inter layer. Therefore, a parasitic capacitance of the gate becomes small, and there is no potential variation of the gate since there is no floating p-layer so that a controllability of the dv/dt can be improved. In addition, the conductive layer between the gate electrodes can relax the electric field applied to the corner of the gate electrode. In consequence, compatibility of low loss and low noise and high reliability can be achieved. | 06-09-2011 |
| 20120176828 | Semiconductor Devices and Power Conversion Systems - A semiconductor device includes first semiconductor layer of a first conductivity type; a second semiconductor layer of a second conductivity type that is formed near a surface of the first semiconductor layer; a first main electrode that is electrically connected to the second semiconductor layer; a third semiconductor layer of the second conductivity type that neighbors the first semiconductor layer; a fourth semiconductor layer of the first conductivity type that is selectively disposed in an upper portion of the third semiconductor layer; a second main electrode that is electrically connected to the third semiconductor layer and the fourth semiconductor layer; a trench whose side face is in contact with the third semiconductor layer and the fourth semiconductor layer; a gate electrode that is formed along the side face of the trench by a sidewall of polysilicon; and a polysilicon electrode. | 07-12-2012 |
| 20120273897 | Semiconductor Device and Electric Power Conversion Device Using Same - The trench IGBT is provided with a plurality of trench gates disposed in a manner so as to form wide and narrow of gaps; has a MOS structure that has a channel of a first conductivity type and that is between the trench gate pair that is disposed with a narrow gap therebetween; and is provided with a floating semiconductor layer of the first conductivity type and that is separated from the trench gates by interposing a portion of a third semiconductor layer of a second conductivity type between the trench gate pair that is disposed with a wide gap therebetween. Also, this floating semiconductor layer is disposed parallel to and at a position corresponding to an emitter electrode and a first semiconductor layer having the same electric potential, with a insulating film therebetween. | 11-01-2012 |
| 20130020634 | Semiconductor Device and Electric Power Conversion System Using The Same - A semiconductor device includes: a first semiconductor layer of a first conductivity type; a second semiconductor layer of a second conductivity type on the first semiconductor layer; trenches in the first semiconductor layer; a semiconductor protruding part on the first semiconductor layer; a third semiconductor layer on the semiconductor protruding part; a fourth semiconductor layer on the third semiconductor layer; a gate insulating layer disposed along the trench; a first interlayer insulating layer disposed along the trench; a first conductive layer facing to the fourth semiconductor layer; a second conductive layer on the first interlayer insulating layer; a second interlayer insulating layer covering the second conductive layer; a third conductive layer on the third semiconductor layer and fourth semiconductor layer; a contacting part connecting the third conductive layer and third semiconductor layer; and a fourth conductive layer formed on the second semiconductor layer. | 01-24-2013 |
| 20140001512 | Semiconductor Device and Power Conversion Apparatus Using the Same | 01-02-2014 |
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| 20120294635 | IMAGE STABILIZATION CONTROL SYSTEM AND IMAGE FORMING APPARATUS DIRECTED TO ELECTROPHOTOGRAPHIC PROCESS - An image stabilization control system directed to an electrophotographic process is provided. The image stabilization control system includes a color measuring unit for measuring the color of a toner image after being fixed on a medium. The color measuring unit has an SCE color measuring function of measuring a component excluding specular reflection out of reflected light produced by light emitted from a light source being reflected at the toner image and an SCI color measuring function of measuring the reflected light including the specular reflection. A control value for a fixing step in the electrophotographic process is adjusted based on a first component attributed to a glossiness difference in chrominance, and a control value for a step other than the fixing step in the electrophotographic process is adjusted based on a second component attributed to another factor in the chrominance. | 11-22-2012 |
| 20130216262 | ROTARY DAMPER AND IMAGE FORMING APPARATUS - A plurality of first viscoelastic bodies are disposed in insertion holes of a first rotary member. A plurality of second viscoelastic bodies are disposed in guide holes of a second rotary member. Each of the first and the second viscoelastic bodies has an elastic coefficient changing in accordance with aging due to use. A guide member moves a contact member along the insertion hole and the guide hole. The contact member applies a compressive load to the first viscoelastic body. The aging of the second viscoelastic body due to the compressive load applied thereto moves a position of the first viscoelastic body where the compressive load is received from the contact member toward a farther side from a rotational shaft side. | 08-22-2013 |
| 20140043627 | COLOR CORRECTING SYSTEM AND IMAGE FORMING APPARATUS INCLUDING SAME - A color correcting system mountable in an image forming apparatus comprises an imaging unit configured to perform image formation and a control unit configured to acquire a control parameter for use in image formation by the imaging unit and a status parameter indicating a status at the time of image formation. If a value for a color in an image formed by the imaging unit does not exceed a first threshold, and at least one member selected from the group consisting of adhering toner amount, gloss, line width, and line position for the image formed by the imaging unit does not exceed a second threshold, the control unit is configured to determine a control parameter on the basis of the acquired control parameter and the acquired status parameter, such that at least a color difference decreases. | 02-13-2014 |
| 20140232805 | OPTICAL WRITING DEVICE AND IMAGE FORMING APPARATUS - An optical writing device having; a plurality of light-emitting points; a plurality of drive circuits for supplying drive currents to the plurality of light-emitting points respectively; a photodetector for outputting signals indicating quantities of light entering thereto from the respective light-emitting points; a gain switch circuit for outputting photodetection signals obtained by amplifying the signals output from the photodetector in regard to the respective light-emitting points with gains preset for the respective light-emitting points; and a control circuit for controlling the drive circuits such that the photodetection signals output from the gain switch circuit in regard to the respective light-emitting points coincide with a value substantially equal to a predetermined reference value. The gains for the respective light-emitting points are preset based on the distances between the photodetector and the respective light-emitting points. | 08-21-2014 |
| 20140267527 | OPTICAL WRITING DEVICE AND IMAGE FORMING APPARATUS - An optical writing device for forming an electrostatic latent image on a photoreceptor by exposing the photoreceptor to light modulated in accordance with image data. The optical writing device has: a substrate; a light-emitting-element array including a plurality of light-emitting elements supported by the substrate to be arranged in a main-scanning direction; and a light-receiving-element array substantially in parallel to the light-emitting-element array, the light-receiving-element array including a plurality of light-receiving elements supported by the substrate to be arranged in the main-scanning direction. For light-quantity measurement of one of the light-emitting elements, at least an output value output from one of the light-receiving elements of which center is located in a different position, with respect to the main-scanning direction, from a center of the one of the light-emitting elements is used. | 09-18-2014 |
| 20140375743 | LIGHT-EMITTING ELEMENT, IMAGE FORMING APPARATUS, IMAGE DISPLAY APPARATUS AND IMAGE READING APPARATUS - A light-emitting element having a light-emitting section and a light-receiving section provided on a substrate. The light-emitting section includes: an organic compound in which light is emitted; a translucent reflecting portion that transmits the emitted light which has spectral radiance changeable with changes in ambient temperature; and a transparent portion that radiates first part of the light coming through the translucent reflecting portion to outside and total-reflects second part that is light incident to a boundary surface therebetween at angles larger than a critical angle. Wherein, the light-receiving section is capable of receiving the light total-reflected at the boundary surface, the received light having a quantity of light changeable with changes in wavelength of the light passing through the translucent reflecting portion. The light-receiving section further outputs a signal which has an amplitude level in correlation to the quantity of light. | 12-25-2014 |
| 20150103865 | OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND TEMPERATURE CALCULATION METHOD - An optical writing device having; a plurality of light-emitting points; a photodiode configured to output a signal which represents a quantity of incident light from a predetermined light-emitting point selected from the plurality of light-emitting points; and a calculation section for calculating a temperature of the photodiode based on a magnitude of a photodiode dark current included in the signal output from the photodiode while the predetermined light-emitting point is OFF. | 04-16-2015 |
| 20150239258 | OPTICAL PRINT HEAD AND IMAGE FORMING APPARATUS - An optical print head performs optical writing onto target, and includes: current-driven light-emitting elements arranged in rows in a predetermined direction; driving transistors that are each electrically series-connected with the light-emitting elements in one-to-one correspondence, and each supply a driving current to a corresponding light-emitting element; a current control unit that controls, for each light-emitting element, a driving current amount in accordance with variation in light-emitting properties of the light-emitting element that indicate relation between the driving current amount and a light amount emitted by the light-emitting element; an application unit that, upon receiving electrical power supplied from an external power source, applies application voltage to circuits each consisting of a light-emitting element and a corresponding driving transistor; and a voltage control unit that suppresses variation in divided voltage applied to each driving transistor by controlling the application unit to apply increased application voltage of the driving current amount increases. | 08-27-2015 |
| 20150266310 | OPTICAL PRINT HEAD AND IMAGE FORMING APPARATUS - Optical print head includes: light-emitting elements connected one-to-one to current supply lines branching from first power line at different positions in longitudinal direction; holding elements; signal writing unit writing luminance signal into each holding element, the luminance signal being represented by voltage indicating light emission amount of corresponding light-emitting element; second power line supplying reference voltage to each holding element, the reference voltage being reference when signal writing unit writes luminance signal into holding element; and driving drivers corresponding one-to-one with current supply lines and controlling current supplied to corresponding current supply line from first power line, in accordance with voltage held in corresponding holding element when signal writing unit has written luminance signal into corresponding holding element, wherein power source supplying the reference voltage to second power line is common with power source supplying voltage to signal output subunit outputting luminance signal. | 09-24-2015 |
| 20160124337 | OPTICAL WRITING DEVICE AND IMAGE FORMING DEVICE - An optical writing device including light-emitting elements forming element arrays. The element arrays are each composed of light-emitting elements arranged in line in a main scanning direction, and reside at respective positions along a sub-scanning direction. A correction unit receives signal values in one-to-one correspondence with the light-emitting elements and performs correction to acquire corrected signal values each indicating a light amount of a corresponding light-emitting element. The correction is for eliminating a light amount difference in the main scanning direction occurring for each element array. A driving unit supplies driving currents to the light-emitting elements based on the corrected signal values, and a control unit performs a control of causing at least two element arrays to emit light for different durations within one main scanning period. The control is for eliminating a light amount difference in the sub scanning direction occurring between the at least two element arrays. | 05-05-2016 |
