Scanning exposure device

Details Scanning exposure device Scanning exposure device

1997-11-25

1999-07-27

Metjahic, Safet

Photocopying

Projection printing and copying cameras

Focus or magnification control

359204, G03B 2770, G02B 2608

Patent

active

059299797

ABSTRACT:
Scanning exposure for three pigments by three optical beams is carried out during a single main scanning. An angle of incidence and an angle between respective light beams are determined so as to prevent overlapping of scanning exposure. As a result, a single modulator can be used in modulating light beams. With respect to maximum swing angle of light beam by a flat mirror of a deflecting device, a image can be recorded (scanning exposure) on a sensitive material by a swing angle of about 1/5 by allocating swing width with respect to the center. Thus, a deviation of position of a focusing point and change in speed can be suppressed so that focusing, concentration and the like can be included within an allowable range.

REFERENCES:
patent: 5557446 (1996-09-01), Kato
patent: 5573894 (1996-11-01), Kodama et al.
patent: 5734489 (1998-03-01), Shiraishi et al.
patent: 5781325 (1998-07-01), Sekikawa
patent: 5793515 (1998-08-01), Sekikawa

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