Light beam deflection scanning method and an apparatus therefor

Details Light beam deflection scanning method and an apparatus therefor Light beam deflection scanning method and an apparatus therefor

1988-05-13

1990-08-07

LaRoche, Eugene R.

350 67, 350358, G02F 111

Patent

active

049462342

ABSTRACT:
A light beam deflection scanning method including the steps of: (a) finding data for cancelling distortion of a scanning track to be made on a surface of an object by a light beam focussed on the surface by a scanning lens, the distortion being caused by the lens; (b) directing the light beam at the surface through a scanning lens and deflecting the light beam in a main scanning direction; (c) detecting the position of the light beam on the surface; and the deflecting in step (b), deflecting the light beam in a subscanning direction by an amount based on the data, to thereby cancel the distortion of the scanning track.

REFERENCES:
patent: 4080634 (1978-03-01), Schreiber
patent: 4367926 (1983-01-01), Hohki
patent: 4802721 (1989-02-01), Fujita et al.
patent: 4829175 (1989-05-01), Goto et al.
"High-Quality Laser Printing by Wobble Scanning," Blazey and Cates, in Journal of Applied Photographic Engineering, vol. 6, No. 6, pp. 144-146, Dec. 1980.
"Laser Beams Speed Up Reticle Writing", in Electronics, pp. 40-42, Oct. '85.

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