Method and apparatus for direct color printing

Details Method and apparatus for direct color printing Method and apparatus for direct color printing

1987-12-17

1989-03-28

Evans, Arthur G.

Recorders

Electric recording

Electrochemical

346154, G01D 1500

Patent

active

048168467

ABSTRACT:
A color printing system employing a large area pattern of controllable light sources, where the pattern includes rows that are aligned substantially with the movement of a print medium in relation to the light sources. All of the light sources in each row contribute to the exposure of each pixel in a corresponding row of the resulting color print. The large area pattern of light sources can be realized with a range of approaches, from the use of a plurality of light sources to the use of a single light source coupled with an appropriate light modulator. In one embodiment, a liquid crystal light modulator was employed for each of the three primary colors.

REFERENCES:
patent: 4399209 (1983-08-01), 346
patent: 4710785 (1987-12-01), Mills
Electronic Imaging, Oct. 1984, "Photocapsule Process for Hardcopy Output", Arthur S. Diamond, pp. 35-41.

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