Method for correcting imperfection in a polygon used for...

Details Method for correcting imperfection in a polygon used for... Method for correcting imperfection in a polygon used for...

H - Electricity

01

J

88/96.8

H01J 3/14 (2006.01)

Patent

CA 1158464

Abstract of the Disclosure A method for correcting imperfections in an electro- optical light scanning system using a modulated laser illumination source directed upon a multifaceted rotating polygonal mirror or polygon. The mirrored facets reflect the impinging light toward a moving photoreceptor and forms a raster of scan lines as the photoreceptor moves. The method uses sensing optics and closed loop electronics for correcting inaccuracies in the position of the reflected light resulting from defects in the angular relationship between the plane of the facets and that of the rotating axis of the polygon as well as those errors due to inherent angular misalignment between each of the facets of the rotating polygon.

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