Low resolution correction apparatus and method for electrophotog

Details Low resolution correction apparatus and method for electrophotog Low resolution correction apparatus and method for electrophotog

1979-09-04

1980-12-02

Moses, R. L.

Photocopying

Including fiber optics

355 3R, 355 32, G03G 1501

Patent

active

042368090

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 representative of the original. A processor converts electrical correction signals according to a prescribed scheme from the raster image signals. A raster output scanner (ROS) generates a raster latent image generated in registration 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 galvanometer to generate the raster latent image.

REFERENCES:
patent: 4046471 (1977-09-01), Branham
patent: 4122462 (1978-10-01), Hirayama et al.

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