Laser control circuit and image forming apparatus

Details Laser control circuit and image forming apparatus Laser control circuit and image forming apparatus

2005-02-24

2008-05-06

Do, An H. (Department: 2853)

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Light or beam marking apparatus or processes

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C372S029015

Reexamination Certificate

active

07369151

ABSTRACT:
An image data processing section subjects input image data to image processing, and outputs first to fourth image data. First to fourth pulse width modulation circuits are PWM circuits in each of which a plurality of reference positions are set in one pixel, and output pulses corresponding to the first to fourth image data. A synthesis circuit synthesizes the pulses output from the first to fourth pulse width modulation circuits, and a laser emits a light beam in accordance with the synthesized pulse.

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patent: 6839078 (2005-01-01), Izumiya et al.
patent: 2001/0048461 (2001-12-01), Noguchi
patent: 2004/0036762 (2004-02-01), Nihei et al.
patent: 2005/0007443 (2005-01-01), Komiya et al.
patent: 2005/0157159 (2005-07-01), Komiya et al.
patent: 2001-091873 (2001-04-01), None

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