Photographic reproduction system

Details Photographic reproduction system Photographic reproduction system

1982-03-29

1984-12-11

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

With focusing or projection screen

355 68, G03B 1328

Patent

active

044875002

ABSTRACT:
Photographic reproduction of copy, with or without a halftone or vignetting dot type of screen, is controlled by measuring and storing optical densities of copy to be reproduced and calibration data for equipment used in such density measurement, as well as values of other pertinent parameters. This system involves interaction between a human operator and an inanimate assistant commonly recognized as a computer. The operator does such acts as juxtaposing a densitometer component of the system to selected parts of the copy, to density standards, and to test or trial reproductions to obtain and input data. The operator also may supply, either by measurement or specification, such other relevant data as actinic, chromatic, dimensional, etc. To assist the operator the computer displays various announcements, inquiries, and instructions, as well as data and computation results. The information supplied is processed by the computer according to appropriate computational and procedural rules with emphasis upon determination and control of exposure light flux to assure desired quality of reproduction.

REFERENCES:
patent: 3542470 (1970-11-01), Ost
patent: 4068943 (1978-01-01), Gyori
patent: 4179214 (1979-12-01), Pone, Jr.
patent: 4264194 (1981-04-01), Pone et al.

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