Optical writing device, image forming device, and optical...

Details Optical writing device, image forming device, and optical... Optical writing device, image forming device, and optical...

2006-08-23

2009-06-23

Pham, Hai C (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

Reexamination Certificate

active

07551194

ABSTRACT:
An optical writing device includes a scanning unit that scans an optical beam in a main scanning direction while shifting a scanning position in a sub-scanning direction by a predetermined pitch, a clock frequency changing unit that changes a frequency of a write clock at a position in the main scanning direction, an image data processing unit that processes image data according to change in the frequency of the write clock, and a correcting unit that adds, when a pixel is removed from the image data, removed pixel to pixels corresponding to the next write clock.

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Masaaki Ishida, et al., “Electrical Dot Position Compensation in Main Scanning Direction of Laser Scanning Optical System”, Ricoh Technical Report No. 30, Dec. 2004, pp. 78-83.

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