Abstract: Light scanning apparatus includes a first imaging optical system including one or more imaging optical elements (IOEs) and a first reflective element on optical path between deflecting unit and a first one of IOEs having greatest power in sub-scanning section, and a second imaging optical system including one or more IOEs and a second reflective element on optical path between second scanned surface and a second one of IOEs having greatest power in sub-scanning section. A straight line passing through first and second light-condensing positions of first and second light fluxes deflected by deflecting unit on first and second optical axes is not perpendicular to sub-scanning direction. Distances on first and second optical axes from first and second axial deflecting points to first and second IOEs, and distances on first and second optical axes from first and second axial deflecting points to first and second scanned surfaces are appropriately set.

Abstract: An image-forming apparatus includes a light-irradiation unit configured to move a spot of laser light on a surface of a photosensitive member at a non-constant scanning velocity in a main scanning direction to form a latent image on the photosensitive member, an image data correcting unit configured to correct a length in the main scanning direction of image data by inserting one or more image data pieces into the image data, the number of the image data pieces increasing as the scanning velocity increases, and/or extracting one or more image data pieces from the image data, the number of the image data pieces increasing as the scanning velocity decreases, and a brightness correcting unit configured to correct a brightness of the laser light so that an emission brightness increases as the scanning velocity increases and/or the emission brightness decreases as the scanning velocity decreases.

Abstract: An image forming apparatus includes: a latent image forming unit that forms a latent image on a latent image bearer with light from a light source; and a correction data generating unit that includes: an acquiring unit that acquires, for each position, a correction value of an intensity of the light source to equalize a density distribution of a latent image; a quantizing unit that generates a correction data for each position by quantizing a correction value for each position; and an excessive correction suppressing unit that outputs the correction data after reducing an amount of change from an immediately preceding latent image formation position, with respect to a position at which an absolute value of a restored value indicating a correction amount and generated based on the correction data exceeds an absolute value of the correction value.

Abstract: An optical-writing-head positioner includes a spacer disposed between a latent image bearer to bear a latent image and an optical writing head to expose the latent image bearer to light to form a latent image on a surface of the latent image bearer. The spacer positions the optical writing head with respect to the latent image bearer. The spacer includes plural contact faces with the latent image bearer in an axial direction of the latent image bearer. The plural contact faces include a contact face having an arc with a radius of curvature equal to or less than a radius of the latent image bearer and one of the a contact face having an arc with a radius of curvature greater than the radius of the latent image bearer and a flat contact face to contact the surface of the latent image bearer.

Abstract: An attachment mechanism of an optical scanning device includes a frame body provided with a supporting base having engaging parts; and a position fixing member arranged between the optical scanning device and the supporting base to have an erection plate, a first supporting plate and a second supporting plate. The first or second supporting plate includes a fitted hole fitting with a positioning boss of the optical scanning device. The first and second supporting plates respectively include first engaged parts and second engaged parts. The position fixing member is attached to the supporting base by engaging one of the first engaged parts and one of the second engaged parts with the engaging parts. The position fixing member changes a plane position of the fitted hole by engaging positions of the engaging parts with the first and second engaged parts and changes a height of the fitted hole by inverting.

Abstract: A retractor that is applicable to an image forming apparatus includes a moving unit to move a latent image forming device between an image forming position and a retracted position, a first guide into which a first projection of the latent image forming device is fitted in different ranges and changing an attitude of the one end side of the latent image forming device, and a second guide into which a second projection of the latent image forming device is fitted in different ranges and changing the attitude of the opposed end side of the latent image forming device. The different ranges include a first range and a second range. An amount of play in at least a part of the first range with respect to the corresponding projection is greater than an amount of play in the second range.

Abstract: In an image forming device including a service provision program providing service for an application program, the service provision program is constituted by a plurality of modules that operate exclusively to each other and are connected together. Change information of the service provision program is recorded on a change information recording unit in response to a service provision request. A service modifying unit detects a service provision request from the application program to the service provision program, and causes the service provision program to change any of the plurality of modules based on the change information recorded on the change information recording unit in response to the detected service provision request.

Abstract: The present disclosure relates to the use of a solid background layer in conjunction with a transparent display panel. In one such implementation, a layer that is switchable between opaque and transparent states is provided between the solid background layer and the transparent display panel. By switching the switchable layer between opaque and transparent states, visibility of the background layer through the transparent display panel may be controlled.

Abstract: An apparatus and method for saving power in an office machine having a display panel are provided. The method comprises setting the apparatus in an operation standby mode, detecting whether an error exists in the apparatus and turning on the display panel to display the error thereon when the error is detected. Furthermore, the apparatus keeps the display panel in an off state when the error is not detected. Thus, the exemplary embodiments of the present invention provide a power saving method of an office machine which prevents unnecessary power consumption during an operation of an office machine having a display panel.

Abstract: An image forming apparatus includes an image bearing member, an exposure unit, and a main housing. An electrostatic latent image is formed on the image bearing member. The exposure unit includes an optical device that irradiates the image bearing member with light to form the electrostatic latent image, and a housing that defines a storage space in which the optical device is located. The main housing includes a partition wall that divides an inner space of the main housing into a first space in which the image bearing member is located and a second space in which the exposure unit is located. The housing includes a first opening wall having a first opening through which the storage space communicates with the second space. The optical device irradiates the image bearing member with light through the first opening.

Abstract: An image forming apparatus includes plural image forming units of plural colors, each including a print head including plural LED chips aligned in a main scanning direction; a screen angle selecting unit that selects screen angles for the plural colors respectively based on the amounts of skew of the plural image forming units; an image processing unit that performs image processing on input data to be expressed by pixels of the plural colors such that the pixels of the colors have the corresponding screen angles selected by the screen angle selecting unit; a correction amount determining unit that determines a total amount of skew correction based on the amount of skew detected by the skew detection unit, and determines the amounts of skew correction in the sub-scanning direction for predetermined groups of the pixels, based on the total amount of skew correction, for each of the colors.

Abstract: An image recording apparatus including a memory element and a processor for a specially programmed general purpose computer. The memory element stores correction data for a plurality of locations on a photoreceptor for the image recording apparatus. The processor is for: inducing a charge on the photoconductive layer; receiving image data including, for said each location in the plurality of locations, a first or second desired voltage level; calculating, using the correction and image data, respective desired output power levels for a LED printbar for the apparatus, aligned with the plurality of locations, to discharge each location to the one of the first or second desired charge level, the respective desired output power levels selected to compensate for variances of respective induced charge levels at the plurality of locations; and supplying respective power inputs to the plurality of LEDs to generate the respective desired output power levels.

Abstract: A cleaner-less image forming apparatus includes an LED which is arranged with a closest distance of 10 to 5000 ?m to a photosensitive member and exposes the photosensitive member. In the image forming apparatus, an absolute value of an average charge of a developer is between 50 ?C/g and 90 ?C/g, and a contact angle of the photosensitive member with respect to pure water is not less than 90° and not more than 150°.

Abstract: In a color misalignment detection method, an alignment pattern is obtained by designating a plurality of lines having line width and line intervals formed by superposing a line image of a black color as a reference color and a line image of a color other than the reference color, for example, a cyan line image, as one patch, and continuously forming these patches by shifting the relative position between the line images of the two colors by an optional quantity. An alignment pattern detection sensor has a light emitting diode and a photodiode. These elements are arranged along the scanning direction of the alignment pattern such that the photodiode can only receive diffused reflected light of reflected light from the alignment pattern. A spot shape of the light emitting diode and a spot shape of the photodiode are both formed in a square shape.

Abstract: An optical scanning device 65 is adapted to bring a deflector mirror plane 651 into independent pivotal motions about a first axis and a second axis perpendicular to each other. A mirror driver section including a first axis driver and a second axis driver is so controlled as to bring the deflector mirror plane 651 into pivotal motion about the first axis thereby deflecting a light beam L for scanning along a main scan direction. On the other hand, the deflector mirror plane 651 is pivotally moved about the second axis thereby to adjust the scanned beam L for its position on a photosensitive member 2 with respect to a subscan direction. Thus, even if the scanned beam is deviated from a reference scan position with respect to the subscan direction due to component tolerances or assembly errors, such a deviation can be corrected.

Abstract: A surface emitting laser includes first mirror, a second mirror, and an active layer formed between the first mirror and the second mirror. A third mirror is formed between the first mirror and the active layer. A first cavity is constituted by the first mirror and the second mirror, and a second cavity is constituted by the first mirror and the third mirror.

Abstract: In a document lighting device, each of the plurality of the light emitting elements arrayed in a light source unit is arranged in a vicinity of a focal point on a cross section in a sub-scanning direction of a long-sized lens, and a convergent point is placed at a location departing a predetermined distance in the main scanning direction from a location on the surface to be illuminated included in the sub-scanning cross section.

Abstract: A disclosed optical path switching device includes a polarization bistable VCSEL that emits a beam having a rising polarization plane, a laser light source configured to emit a beam having a polarization plane orthogonal to the rising polarization plane, and an optical path switching unit configured to switch an optical path of the beam emitted from the polarization bistable VCSEL by switching the angle of the rising polarization plane of the beam emitted from the polarization bistable VCSEL. The beam emitted from the polarization bistable VCSEL is incident on an entrance window of the optical path switching unit, and the beam emitted from the laser light source is incident on an exit window of the polarization bistable VCSEL.

Abstract: A digital photo album with a photo printer comprises a printing apparatus and a digital photo album. The printing apparatus includes a printer housing, a driving mechanism, a paper tray, and a printing unit. The driving mechanism, the paper tray, and the printing unit are installed in the printer housing. The digital photo album includes a frame and a display. The display is installed on the frame and combined with the printer housing of the printing apparatus. Thereby, the digital photo album with a photo printer can both display and print photos so that they can be viewed and printed according to the wishes of the user.

Abstract: A light-emitting device includes a plurality of light-emitting elements, an element substrate on which the plurality of light-emitting elements are disposed, a plate-shaped sealing member having a lens array in which a plurality of lenses is arranged and sealing the plurality of light-emitting elements together with the element substrate, and a spacer disposed between the element substrate and the plate-shaped sealing member for maintaining a distance between the light-emitting elements and the lenses, in which the spacer is provided with a plurality of sealing cavities, at least one lens of the plurality of lenses is disposed so as to overlap each of the sealing cavities, and the light-emitting elements are disposed in each of the sealing cavities so as to overlap the corresponding lenses.

Abstract: A hybrid printing assembly includes a first printing subassembly operable to produce a first pattern on a medium, and a second printing subassembly operable to generate a second pattern on the medium.

Abstract: A laser shutting device blocks laser beams in a laser scanning unit that includes a light source that emits laser beams and a beam deflecting unit that deflects the laser beams in a main-scanning direction and is adapted to form an image on a photosensitive body using the laser beams. The laser shutting device includes a shutter movably installed in a light path between the light source and the photosensitive body, an opening formed in the shutter that allows the laser beams to pass therethrough, and a laser shutting unit that moves the shutter using an electromagnet according to a start signal for operating the beam reflecting unit so that the laser beams can pass through the opening.

Abstract: The present invention provides an image exposure apparatus which has a light emitting chip including a plurality of light emitting elements, a base plate for mounting the chip thereon, a lens for imaging light emitted from the plurality of light emitting elements on an exposure surface, an electrode disposed in the vicinity of the lens, and an insulative protecting member for protecting the chip, wherein a gap is provided between the electrode and the protecting member.

Abstract: If an edge of a sheet metal of a image forming apparatus damages an electric cable, the image signal is distorted and no correct image is formed since the damage causes feeding failure and signal deterioration. This is remarkable in the conventional digital electrophotographic apparatus, since the drive signal to drive a laser or a light emitting diode (LED) for exposing the photosensitive body becomes higher in frequency as a resolution and speed are increased and tends to generate the electric noise. In order to prevent damage of an electric cable by a metal frame, an apparatus having a holder for holding a feed cable is provided.

Abstract: A light source using electroluminescence layers of which width and thickness are adjusted so that emission luminance does not depend on the position on the layer. Also, a light source using red, green and blue electroluminescences light media for a color source of which the width and thickness are so adjusted that the required emission luminance can be obtained from electroluminescences for the respective colors. In light sources using electroluminescence not adjusted in width and thickness as light medium, emission luminance is different from position to position, especially in the direction along the longitudinal direction.

Abstract: A pattern of a reticle is irradiated with excimer laser light to expose an image of the pattern of the reticle onto a wafer through a projection optical system. Driving elements for driving optical elements in the projection optical system and a transfer mechanism for transferring a pupil filter into the projection optical system are covered by covers to isolate the inside of the projection optical system from its outside. During exposure, helium gas is supplied to the inside of the projection optical system with a purity and a temperature of the helium gas being continuously monitored and the purity and the temperature of the helium gas in the projection optical system being maintained within a predetermined tolerance range based upon the monitored results.

Abstract: Photographic prints are produced from a virtual negative image on photographic paper using a mini-lab that has an exposure target and a lamp capable of directing a light beam along an optical path. An image formation device coupled with a source of virtual negative images and a displacement actuator coupled with the image formation device are provided. The image formation device is positioned in a first position. A group of pixels on the image formation device that correspond to a portion of the virtual negative image is illuminated. The photographic paper is exposed to the group of pixels by directing the light beam from the lamp along the optical path. Relative motion is provided between the image formation device and the exposure target. A group of pixels on the image formation device that corresponds to a portion of the virtual negative image is illuminated. The photographic paper is exposed to the group of pixels by directing the light beam from the lamp along the optical path.

Abstract: The invention relates to an apparatus for thermal development comprising a receiving chamber for a thrust cartridge, drive means to advance thermal film from said thrust cartridge and rewind film into said thrust cartridge, an optical writer to write information onto the thermally developable film, a magnetic reader and writer to read and write magnetic information onto the film, a scanner to scan the thermally developable film, an accumulator to gather said film after it has left the cartridge, a heater located between said chamber and said accumulator to develop said thermal film as it passes between said cartridge and said accumulator, and a lighttight container for said chamber, heater, and accumulator.

Abstract: Even when a surface temperature of an illumination optical system becomes high, detection accuracy of a reticle alignment detection system is not negatively affected. An illumination optical system irradiates an illumination light to a mask and exposes a substrate with the illumination light through the mask. A gas supply device supplies gas, which has been cleaned, to a case in which is disposed at least part of an illumination optical system. A temperature adjusting device adjusts the temperature of the case and the temperature in the vicinity of the case.

Abstract: A high-quality image is formed by using light emission element arrays of plural lines. The plural light emission element arrays are arranged substantially in parallel, an area of a light emission part of each array being different from others, respective light emission elements in the light emission element arrays are caused to selectively perform light emission according to gradation data, and the respective light emission element arrays overlappingly perform exposure on a relatively moved photosensitive body.

Abstract: An image forming apparatus includes a moving member for conveying a recording member on which an image is to be formed, image forming units for forming marks for detection of a position of the image on the moving member, an illuminating device for illuminating the marks for detection of the position, which includes a LED light source, a detecting device for detecting the marks, and a control device for controlling the image forming units with detection signals detected by the detecting device.

Abstract: Full color images are formed by electrophotography which utilizes a rotary member having an endless photosensitive surface which has a plurality of different band regions divided in a direction perpendicular to a rotational direction of the rotary member. The photosensitive surface is electrostatically charged, and the plural band regions are simultaneously irradiated each with light of a different color to electrostatically form a different latent image in each of the band regions. Then, the latent images of the respective band regions are developed to provide a set of differently colored images which are transcribed onto a recording medium. After the set of differently colored images is transcribed onto the recording medium, the recording medium is indexed in a direction perpendicular to the rotational direction of the rotary member.

Abstract: A video signal recording and reproduction apparatus, provided with at least one encoding apparatus for encoding an input video signal, at least one data storage apparatus for recording and reproducing a video signal encoded by the encoding apparatus, a line switching apparatus for selectively connecting the encoding apparatus and data storage apparatus or selectively connecting the data storage apparatus and an output line of the video signal; and a control apparatus for controlling the line switching apparatus and the data storage apparatus in accordance with a recording command or reproduction command.

Abstract: Servicing of an image forming device, such as a digital photocopier, is made convenient by providing an access opening exposing each of a number of prescribed serviceable components enclosed in a sealed casing. These serviceable components may include a light source scanner, lens group and beam detector. The casing bears removable cover units on the access openings. The serviceable components are located under the access openings, fixed in place by the cover units or elements attached to the cover units. Electrical switches coupled to the cover units may deactivate the components when the cover units are removed.

Abstract: A lens plate is provided with many lenses, and a base plate is provided with many LED arrays and driving ICs arranged at respective opposite ends of the base plate. The lens plate and the base plate are positioned in place relative to each other by spacers. The base plate has a thermal conductive layer and a thermal preserving layer over the layer. Grooves are formed in the preserving layer between the driving ICs and the LED arrays.

Abstract: An intermediate transcription drum is supported so as to be driven in contacting relationship with a photosensitive belt. The rotating speed of the photosensitive belt driving motor is controlled by a control unit such that one rotation cycle of the intermediate transcription drum becomes a given cycle. An adjustment of the speed control data for the photosensitive belt driving motor is performed in the interval between electrostatic latent image forming. Thereby, a speed difference between the photosensitive belt and the intermediate transcription drum does not occur, and a plurality of the toner images can be transferred and accurately superposed onto the outer surface of the intermediate transcription drum.