Integrating densitometer

Details Integrating densitometer Integrating densitometer

1981-02-12

1983-11-29

McGraw, Vincent P.

Optics: measuring and testing

By shade or color

Photography

356418, 355 35, G01J 340, G01J 348, G03B 2772

Patent

active

044178182

ABSTRACT:
An integrating densitometer for comparing unknown values of an integrated color print with reference values of a standard to indicate changes in density and quality and quantity characteristics of color for correcting the values of the unknown to have substantially the values of the reference, the densitometer having a photopic filter before a light sensor, and a master control for biasing simultaneously individually adjustable color controls.

REFERENCES:
patent: 2273356 (1942-02-01), Holven et al.
patent: 2544196 (1951-03-01), Varden
patent: 3304832 (1967-02-01), Lewis et al.
patent: 3812350 (1974-05-01), Szabo et al.
patent: 4125330 (1978-11-01), Schild
patent: 4344708 (1982-08-01), Tokuda

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