Photoplotter using a light valve device and process for exposing

Details Photoplotter using a light valve device and process for exposing Photoplotter using a light valve device and process for exposing

1986-03-14

1987-06-23

Hartary, Joseph W.

Recorders

Light or beam recording

Including record receiver or handling means therefor

350356, 354 4, 355 53, G01D 942, G03B 2732

Patent

active

046757023

ABSTRACT:
A photoplotter supports a sheet of photosensitive material for exposure by an associated light source. A light valve device interposed between the light source and the sheet has a main face parallel to the sheet divided into a plurality of subareas or pixels the light transmissivities of which are individually controlled through an associated computer to cause the exposure to be that of a desired graphic or artwork.

REFERENCES:
patent: 3689932 (1972-09-01), Gerber
patent: 3930119 (1975-12-01), Schmidt
patent: 4110762 (1978-08-01), Tigreat
patent: 4225224 (1980-09-01), Balasubramanian
patent: 4278981 (1981-07-01), Hill
patent: 4312004 (1982-01-01), Samek
patent: 4378568 (1983-03-01), Mir

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