Optical enhancement of color proofing images

Details Optical enhancement of color proofing images Optical enhancement of color proofing images

1979-08-20

1981-04-14

Kimlin, Edward C.

Radiation imagery chemistry: process, composition, or product th

Imaged product

Structurally defined

430 14, 430 15, 430 17, 430143, 430162, 430293, 430358, G03F 500

Patent

active

042620716

ABSTRACT:
Pre-press or photomechanical color proofs of half-tone printed products do not faithfully match the color tone values of the final half-tone printed product. This problem occurs from the fact that the printing press, in its mechanical operation, produces half-tone dots on the substrate which are larger than the dots on the printing plate or separation negative itself. It has been found that the proper tonal values for gauging the final results from the press can be obtained in the pre-press color proof by the insertion of a spacer layer between the opaque base and the applied pigment or dye containing layers.

REFERENCES:
patent: 3046127 (1962-07-01), Barney et al.
patent: 3060025 (1972-10-01), Burg et al.
patent: 3549373 (1970-12-01), Hamada et al.
patent: 3615435 (1971-10-01), Chu et al.
patent: 3649268 (1972-03-01), Chu et al.
patent: 3671236 (1972-06-01), Beusekom
patent: 3764318 (1973-10-01), Laridon
patent: 3811882 (1974-05-01), Henry
patent: 3905815 (1975-09-01), Bonham
Sigg, Technical Assoc. of the Graphic Arts, 1970 Annual Book, pp. 197-213.

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