Method and apparatus for reducing the visibility of streaks...

Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light

Reexamination Certificate

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Reexamination Certificate

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06972783

ABSTRACT:
A plurality of beams scan the photosensitive body or the like so that a high quality image whose streak is not recognized by a human eye can be formed. 2m lines are formed simultaneously in Nth time, (N+1)-th time, and (N+2)-th time scannings respectively. At this point, the m lines are fed in a sub-scanning direction at each termination of one-time scanning, and the next scanning is performed. Accordingly, a region which is exposed twice between the scannings is generated at an m-line period.

REFERENCES:
patent: 5233367 (1993-08-01), Curry
patent: 5748223 (1998-05-01), Ito
patent: 6115165 (2000-09-01), Tada
patent: A 4-149522 (1992-05-01), None
patent: A 4-149523 (1992-05-01), None
patent: A 4-149524 (1992-05-01), None
patent: A 5-42716 (1993-02-01), None
patent: A 8-292384 (1996-11-01), None
Dooley et al., “Noise Perception in Electrophotography”, Journal of Applied Photographic Engineering, vol. 5, No. 4, pp. 190-196, 1979.

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