scispace - formally typeset
Patent

Image forming device and image forming method

Imai Shigeaki, +1 more
TLDR
In this article, an image forming device is described that is able to correct an image distortion even when the installation environment changes or unexpected shocks occur and even when an optical scanning device is exchanged.
Abstract: 
An image forming device is disclosed that is able to correct an image distortion even when the installation environment changes or unexpected shocks occur and even when an optical scanning device is exchanged The image forming device comprises a light source, an optical scanning unit, a development unit, a transfer unit, a test image output unit to output a test image able to determine unevenness of intervals of positions of beam spots formed on an image supporting member, a beam spot position correction unit to correct the unevenness of the beam spot position intervals, and a correction data input unit to select correction data of the unevenness of the beam spot position intervals

read more

Citations
More filters
Patent

Optical scanner and image forming apparatus

Yoshinori Hayashi, +1 more
TL;DR: In this paper, an optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned, and a special toric surface in which a radius of curvature in a vertical scanning changes from an optical axis of the lens surface toward a periphery of the horizontal scanning direction.
Patent

Optical scanning device and image forming apparatus

Nakamura Tadashi, +1 more
TL;DR: In this paper, a common photodetecting unit detects a plurality of beams scanned by polyhedral reflection mirrors provided in a multiple stages with a common rotation axis, and generates a synchronization detection signal based on detected beams.
Patent

Optical scanning apparatus and image forming apparatus

Mitsuo Suzuki, +1 more
TL;DR: In this paper, an optical scanning apparatus which includes a light source unit which emits a light beam, a deflection scanning device which deflects the light beam emitted from the light source, and a light beacon detector is disposed in a position maintaining a correlation, in a time-varying characteristic, between an amount of change of a position in the sub-scanning direction of the light beacon on the surface to be scanned and the amount of changes in the position of the object in the object detected by the detector.
Patent

Velocity detecting device and multi-color image forming apparatus

Hiroyoshi Funato, +3 more
TL;DR: In this article, a velocity detecting device includes an image-pattern acquiring unit that includes a laser light source and an area sensor that acquires a one-dimensional or a two-dimensional image.
Patent

Light source device, optical scanning device, and image forming apparatus

Nakamura Tadashi, +3 more
TL;DR: In this article, an optical splitting member splits a light beam emitted by a light source into first light beam and second light beam, and a coupling member couples the first beam and the second beam.
References
More filters
Patent

Pixel clock generating apparatus, optical writing apparatus using a pixel clock, imaging apparatus, and method for generating pixel clocks

Atsufumi Omori, +3 more
TL;DR: In this paper, a pixel clock generating apparatus consisting of a data offset circuit and a pixel generator is described. And the phase data represents an amount and a direction of phase shift to be carried out for a certain clock in each data block.
Patent

Multi-beam pitch adjustment system and method

Tatsuya Ito, +6 more
TL;DR: In this paper, the authors present methods of and systems for automatically adjusting or selecting a pitch between beams in a multi-beam scanning system, where an array of light sources is mounted on a rotatable housing and emits light in a direction perpendicular to the rotational plane.
Patent

Image forming device

Suzuki Seishi
TL;DR: In this paper, the problem of obtaining an image forming device which is easily and surely disassembled and recycled even by a person having little knowledge on the image forming devices by displaying disassembling procedure for disassembeling the device to plural parts and recycle information for recycling the plural parts is solved.
Patent

Image forming method, image forming apparatus, optical scan device, and image forming apparatus using the same

Seizo Suzuki, +4 more
TL;DR: In this paper, an optical scan device has an optical deflector reflecting a light beam from a lightbeam source so as to deflect the light beam and having a surface to be scanned on which information is written such that the lightbeam deflected by the deflector scans the surface is disclosed.
Patent

Image recording apparatus in which a plurality of images of different colors are printed in registration

Yoshitaka Miyazaki, +5 more
TL;DR: In this paper, a color shift detecting section detects the amount of color shift between the first and second ones of the print engines by measuring an intensity of light reflected by the detection patterns.