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G03G 15/04 (2006.01) G03B 27/72 (2006.01) G03B 27/73 (2006.01) G03G 15/01 (2006.01) G03G 15/02 (2006.01)
Patent
CA 1165804
ABSTRACT A color copier having high resolution projection optics is modified to include low resolution electrical correction method and apparatus. A latent electrostatic image of an original is generated with conventional lamp and lens projection optics. This optical latent image is corrected for tone or color in real time by a parallel raster exposure arrangement. A raster input scanner (RIS) generates electrical raster image signals repre- sentative of the original. A processor converts electri- cal correction signals according to a prescribed scheme from the raster image signals. A raster output scanner (ROS) generates a raster latent image generated in regis- tration with the optical latent image in response to the electrical correction signals. The RIS uses charge coupled devices (CCD's) to generate the electrical raster signals and the ROS uses a laser, and galyanometer to generate the raster latent image.
359400
Sim & Mcburney
Xerox Corporation
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