Method of exposure with plurality of light beams

Details Method of exposure with plurality of light beams Method of exposure with plurality of light beams

1993-09-20

1995-09-12

Braun, Fred L.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

358474, B41J 247, G11B 708, H04N 140

Patent

active

054501202

ABSTRACT:
A method of making a two-dimensional exposure on an object with a plurality of light beams by a main scan for making scans with the light beams in one direction and a sub-scan for making scans with the light beams in a direction intersecting the direction of the main scan. In a distance detecting step, a distance between a portion exposed to at least one of the plurality of light beams and a portion exposed to respective other light beams is detected when respective the plurality of light beams are exposed toward an object. In an exposure start-timing changing step, the timing for starting an exposure to be effected by at least one of the main scan and sub-scan made with respective the plurality of light beams is changed according to the distance in such a manner that the positions of the portions exposed to the plurality of light beams are substantially identical.

REFERENCES:
patent: 5087928 (1992-02-01), Okino
patent: 5151714 (1992-09-01), Okino et al.
patent: 5258856 (1993-11-01), Shinada
patent: 5323183 (1994-06-01), Tateoka et al.

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