Method and apparatus for on-press color measurement

Details Method and apparatus for on-press color measurement Method and apparatus for on-press color measurement

1994-10-19

1996-08-06

Evans, F. L.

Optics: measuring and testing

By shade or color

356375, 356416, 356401, G01J 350

Patent

active

055439225

ABSTRACT:
A color measurement system includes a measurement patch utilizable on a continuous sample of color printed matter. The patch has a first predefined shape with a color reference area centrally located on the patch and a high contrast feature located proximate to an edge of the patch. A camera scans the sample and generates a location signal upon detection of the high contrast feature which permits accurate positioning of a measurement sensor.

REFERENCES:
patent: 3832070 (1974-08-01), Cox
patent: 3970394 (1976-07-01), Stanton
patent: 4657399 (1987-04-01), Hall

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