Scanning and exposing method using a plurality of optical beams

Details Scanning and exposing method using a plurality of optical beams Scanning and exposing method using a plurality of optical beams

1991-10-11

1993-11-02

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Picture signal generator

358481, H04N 140

Patent

active

052588564

ABSTRACT:
A method and apparatus for scanning and exposing in which m laser beams which are arranged in an array so that part of a adjacent laser beams overlap on the photosensitive surface, are main-scanned in a direction intersecting the line along which the laser beams are arranged, while being sub-scanned in the direction in which they are arrayed, to carry out a two-dimensional exposure. The power of at least one of the mth laser beam for the Nth main scanning and the first laser beam for the (N+1)th main scanning is changed, or the distance between the mth laser beam for the Nth main scanning and the first laser beam for the (N+1)th main scanning is changed, to correct density unevenness at the overlapping portion of the mth and the first laser beams.

REFERENCES:
patent: 4475115 (1984-10-01), Garbe et al.
patent: 4525729 (1985-06-01), Agulnek et al.
patent: 4712118 (1987-12-01), Seto et al.
patent: 4943871 (1990-07-01), Miyagawa
patent: 4958236 (1990-09-01), Nagashima et al.
patent: 4959664 (1990-09-01), Naiki et al.

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