Matches 1 - 50 out of 361 1 2 3 4 5 6 7 8 >


Match Document Document Title
US20150138296 DYNAMIC ADJUSTABLE FOCUS FOR LED WRITING BARS USING PIEZOELECTRIC STACKS  
According to aspects of the embodiments, there is provided methods of dynamically focusing an LED print bar or printhead using piezoelectric stacks. The stack is mounted on either end of the LED...
US20120268544 PRINTER NONUNIFORMITY COMPENSATION FOR HALFTONE SCREENS  
Compensation is performed for nonuniformity in a printer. The printer has a photoreceptor and a print head with a plurality of different light sources, each light source capable of producing a...
US20060274141 Laser scan unit and an image forming apparatus having the same  
A laser scan unit for projecting lights to first through fourth image carrying mediums that are sequentially disposed includes first and second deflection scanning optical systems. The first...
US20120249712 LIGHT-EMITTING CHIP, PRINT HEAD, AND IMAGE FORMING APPARATUS  
A light-emitting chip includes plural light-emitting thyristors having a first anode terminal, a first cathode terminal, and a first gate terminal, plural setting thyristors having a second anode...
US20150241839 IMAGE FORMING APPARATUS  
An image forming apparatus includes a shutter spring engaging with a cover at one end while engaging with a shutter at another end, configured to urge the shutter for a closed state from an open...
US20120050443 Rotational polygon mirror and light scanning unit employing the same  
A rotational polygon mirror includes a plurality of reflection surfaces that rotate with respect to a rotation axis, wherein each of the reflection surfaces has a convex shape and a...
US20140049591 OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND CONTROL METHOD OF OPTICAL WRITING DEVICE  
An optical writing device forming an electrical latent image on a photoreceptor includes an optical writing unit configured to apply light to the photoreceptor, a power supply unit configured to...
US20120127252 Polygon mirror assembly, light scanning unit employing polygon mirror assembly, and image forming apparatus  
A polygon mirror assembly, a light scanning unit employing the polygon mirror assembly, and an image forming apparatus. The polygon mirror assembly includes a polygon mirror formed of a plastic...
US20110279624 OPTICAL SCANNER AND IMAGE FORMING APPARATUS  
An optical scanner includes a third f-theta lens, an eccentric cam, an attaching portion, a first supporting member, a second supporting member and a spring. A distance between a face opposed to...
US20120300008 OPTICAL WRITER AND IMAGE FORMING APPARATUS INCLUDING SAME  
An optical writer includes a light source, an optical part, a housing, and an elastically deformable retainer. The light source projects light against a target. The optical part is disposed on a...
US20130016170 LED DEVICE, LED DEVICE ARRAY, AND METHOD OF DRIVING THE LED DEVICE ARRAY  
Provided is an LED device which is capable of reducing the emission size without changing the size of an LED and is capable of switching the emission size arbitrarily. The LED device includes, on...
US20140375742 COVER MEMBER, LIGHT SCANNING APPARATUS, AND IMAGE FORMING APPARATUS  
A cover member to be attached to a housing including a bottom portion and a side wall, the cover member including: a closing surface configured to close an opening surrounded by the side wall; at...
US20140111592 Linear LED Array for Digital Printing Apparatus  
Disclosed is an array of light emitting semiconductor components for use in a digital printer. Each component includes a driver and at least one light emitting device. The array includes data...
US20150234307 OPTICAL WRITER AND IMAGE FORMING APPARATUS  
Disclosed is an optical writer including a light source substrate including a base and a plurality of light sources disposed on the base, a rod lens array comprising a plurality of rod lenses...
US20140078233 LIGHT EMITTING APPARATUS, DRIVING CIRCUIT OF LIGHT EMITTING ELEMENT, AND DRIVING METHOD  
A light emitting apparatus includes a light emitting element, a driving circuit which has a driving transistor having a gate, a drain, and a source, and a capacitor having one end connected to the...
US20130194369 Image Forming Device  
An image forming device includes a fixed frame, a slide frame, a head supporting frame, a cam structure, and an operation body. The fixed frame is arranged adjacent to a photosensitive body. The...
US20110193924 DRIVING CIRCUIT AND APPARATUS, AND IMAGE FORMING APPARATUS  
A driving circuit includes a reference voltage generating circuit and a driver circuit. The driver circuit drives a driven element at a level determined by the reference voltage output by the...
US20150002593 LIGHT SCANNING DEVICE AND IMAGE FORMING APPARATUS  
A light scanning device of the invention includes a scan deflection range of each of the light fluxes deflected by the deflecting part in a scan period of the scan object with the respective light...
US20120300007 OPTICAL WRITER AND IMAGE FORMING APPARATUS INCLUDING SAME  
An optical writer includes a housing, a light source, a deflector, and a plurality of optical elements. The housing includes a plurality of surfaces, one of which includes a substantially flat...
US20120056961 OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, AND METHOD AND PROGRAM PRODUCT FOR CONTROLLING OPTICAL WRITING DEVICE  
An optical writing device is provided with a pixel information acquiring unit that acquires multilevel pixel information in which one pixel is expressed in multilevel scales, a line pixel...
US20110242253 OPTICAL HEAD, IMAGE FORMING APPARATUS, AND MANUFACTURING OF THE OPTICAL HEAD  
According to one embodiment, an optical head includes a light emitting substrate emitting light and allow light of specific wavelength to pass; a mounting base to which the light emitting...
US20150097908 LIGHT EMITTING PART, PRINT HEAD, AND IMAGE FORMING APPARATUS  
Cathodes of a first group of plural transfer thyristors are connected with a first transfer signal line, and also connected with a first reception terminal through a first current limiting...
US20070115339 Image forming device and method of correcting image to be formed  
An image forming device includes a rotating polygon mirror and a correcting component that corrects misregistration of an image region in a predetermined direction. The correcting component...
US20150145938 IMAGE FORMING APPARATUS  
An image forming apparatus includes a vibration adjustment unit which adjusts a natural frequency of an optical system, a measuring unit which measures vibrational information indicating change in...
US20140176656 LIGHT SOURCE DRIVER, LIGHT SOURCE-DRIVING METHOD, IMAGE-FORMING APPARATUS, LIGHT SOURCE-DRIVING CIRCUIT, AND OPTICAL SCANNER  
A light source driver includes a controller which outputs an undershoot current in synchronization with lighting complete timing in lighting information, wherein the controller is configured to...
US20130141506 LIGHT SCANNING DEVICE AND IMAGE FORMING APPARATUS  
A light scanning includes an adjusting unit that displaces the optical member to adjust the optical axis of the laser beam. The adjusting unit includes a shaft portion, a shaft supporting portion,...
US20150092002 Light Scanning Device Reducing Deformation of ftheta Lens and Housing and Image Forming Apparatus with the Same  
A light scanning device include a housing and an fθ lens. The housing includes a bottom plate and a sidewall disposed upright at the bottom plate. The rotating polyhedron and the fθ lens are each...
US20130106972 IMAGE FORMING APPARATUS  
An image forming apparatus includes a control unit performing a first rotation control process of switching on and off current-supplying in accordance with a change in a first deviation between a...
US20110228029 OPTICAL WRITER, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING OPTICAL WRITER  
An optical writer includes a scanning part causing a light beam from a light source to perform scanning on a photosensitive body; an image information obtaining part obtaining image information of...
US20150116437 IMAGE FORMING APPARATUS  
An image forming apparatus includes a signal generation unit configured to generate a light-emission signal. The signal generation unit stores information relating to a toner non-adherent area...
US20150097910 OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME  
An optical scanning device including a light source and a rotating polygon mirror having a plurality of reflective surfaces scans a scan area of a surface in a main scanning direction with the...
US20130010045 IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING THE IMAGE FORMING APPARATUS  
An image forming apparatus includes a temperature sensor detecting an operating ambient temperature of the polygon motor, and a controller controlling the polygon motor and the paper feed...
US20110292151 SUPPORT STRUCTURE AND IMAGE FORMING APPARATUS  
The present invention provides a support structure, which includes: a housing configured to store an optical element; a support unit configured to support the housing; a positioning element...
US20170184994 EXPOSURE DEVICE, IMAGE FORMATION APPARATUS, AND METHOD OF MANUFACTURING EXPOSURE DEVICE  
An exposure device includes: a board on which light emitting elements are arranged; an optical system disposed opposite to the board; a support member which supports the board and the optical...
US20170168413 OPTICAL WRITING DEVICE AND IMAGE FORMING DEVICE  
An optical writing device including: a current-driven light-emitting element; a thin film transistor configured to supply the light-emitting element with a drive current based on a luminance...
US20170153588 IMAGE FORMING APPARATUS USING TEST IMAGES TO ADJUST POSITION OF LATENT IMAGE  
The image forming apparatus includes an adjustment unit that adjusts the position where the electrostatic latent image is formed in a rotation axis direction of a photoconductor in accordance with...
US20170153570 OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS  
The present invention relates to an optical scanning device and an image forming apparatus. In order to suppress jitter, the degree of convergence of a first incident optical system and the degree...
US20170153568 IMAGE FORMING APPARATUS  
An image forming apparatus includes an optical scanning unit including a rotatable polygonal mirror and a detecting portion; and a controller. A rotation center of the rotatable polygonal mirror...
US20170153567 IMAGE FORMING APPARATUS  
An image forming apparatus includes an optical scanning unit including a rotatable polygonal mirror, a detecting portion, and a slit; and a controller. The slit includes a first portion where a...
US20170153565 OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME  
An optical scanning apparatus includes a light source, a deflector configured to deflect a light flux from this light source to scan a surface to be scanned in a main-scanning direction, an...
US20170146924 IMAGE FORMING APPARATUS  
An image forming apparatus includes a laser light source configured to emit a light beam, a photoconductor drum configured to be driven for rotation on which a latent image is formed by the light...
US20170146923 CONTROLLER  
A setting unit of a controller mounted on a control board sets a first mode for generating, from image data, PWM data indicating a pattern for causing an LD to emit light and transmitting to a...
US20170139345 OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME  
The optical scanning device includes a polygon mirror, one or more planar mirrors for reflecting the beam light so as to be led to a photosensitive drum, and a pressing member for pressing a back...
US20170139342 LIGHT SCANNING APPARATUS AND IMAGE FORMING APPARATUS  
A light scanning apparatus, including: a light source; a light intensity detecting portion configured to detect a light intensity of the light beam emitted from the light source; and a light...
US20170134603 OPTICAL SCANNING APPARATUS  
Provided is an optical scanning apparatus, including: a deflector which deflects light beams with first and second deflection surfaces to scan first and second scanned surfaces in a main scanning...
US20170123341 OPTICAL WRITING DEVICE AND IMAGE FORMING APPARATUS  
An optical writing device driving a light-emitting element array, modulating light according to a screening pattern that expresses a dithered image, and performing optical writing by focusing...
US20170115612 TECHNOLOGY SENDING COMMAND IN TIMELY MANNER WITHIN IMAGE FORMING APPARATUS  
An image forming apparatus comprises a first control unit and a second control unit. The second control unit is connected to the first control unit and controls a light source according to a video...
US20170115592 LIGHT EMITTING DEVICE, OPTICAL WRITE-IN DEVICE, AND IMAGE FORMING DEVICE  
A light emitting device configured to cause a series circuit in which an OLED is connected to a thin film transistor to emit light by applying a predetermined voltage to the thin film transistor...
US20170108794 IMAGE FORMING APPARATUS  
An image forming apparatus comprising: an exposing unit including: a first light source comprising a first light emitter and a first light receiver including a first electric output responsive to...
US20170097450 POLYGON MIRROR, IMAGE FORMING APPARATUS, AND METHOD FOR MANUFACTURING A POLYGON MIRROR  
A polygon mirror made of plastic is provided. The polygon mirror has a plurality of reflecting surfaces, a first surface intersecting the plurality of reflecting surfaces at a first side, a second...

Matches 1 - 50 out of 361 1 2 3 4 5 6 7 8 >