Spot position control using a linear array of light valves

Details Spot position control using a linear array of light valves Spot position control using a linear array of light valves

1995-12-14

1998-06-09

Yockey, David F.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347234, B41J 2435

Patent

active

057642737

ABSTRACT:
A method and apparatus for using a raster output scanner which includes an array of independently addressable light valve elements that control the slow scan direction position of a spot in an image plane. In operation, the array is illuminated by light from a separate optical source and disposed such that the spot from each element of the array impinges the image plane in a different position in the slow scan direction and such that the maximum distance between the spots is less than the distance between scan lines. Only a single element of the array passes light per scan line, thus only a single spot is formed on the image plane per scan line. Control of which element in the array transmits a light beam per scan line allows control of the spot position in the slow scan direction for that scan line.

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