Photocopying – Projection printing and copying cameras – Multicolor picture
Patent
1983-09-30
1985-09-10
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Multicolor picture
355 71, G03B 2780
Patent
active
045402760
ABSTRACT:
Color photo-reproduction of copy is assured by measuring and storing optical densities of the copy plus calibration data for densitometric equipment used in such 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 densitometric component of the system to parts of the copy, to density standards, and to trial reproductions so as to input density data retrievably to the computer memory. The operator also may supply, either by measurement or specification, actinic, chromatic, dimensional, and other relevant data. The computer displays, for the guidance of the operator, various announcements, inquiries, and instructions, as well as empirical and calculated values of data. The information variously supplied is processed by the computer according to appropriate procedures and computational rules. The methods of color photo-reproduction include producing color-corrected continuous tone masks and both indirect-screen and direct-screen color-separation negatives.
REFERENCES:
patent: 3542470 (1970-11-01), Ost
patent: 4101216 (1978-07-01), Grossmann
patent: 4464045 (1984-08-01), Findeis et al.
patent: 4492458 (1985-01-01), Bickl et al.
McClure Charles A.
Wintercorn Richard A.
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