Multicolor printing

Details Multicolor printing Multicolor printing

1973-07-05

1976-04-20

Welcome, Joan E.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

101211, 106 25, 106 26, 106 27, 106 28, 106 29, 106 30, 106 31, 106 32, B41M 114, C09D 1102, C09D 1106, C09D 1108

Patent

active

039516687

ABSTRACT:
A multicolor printing method for reproducing varicolored images on substrates having a white surface by printing with inks of three primary colors, i.e. a color absorb blue (cab) which is a yellow, a color absorb green (cag) which is a red-violet and a color absorb red (car) which is a blue-green, producing printed colors having spectral density curves passing through matching ranges of optical densities at characteristic wavelengths in the visible spectrum, the ranges being within the following parameters: Range of Optical density in % of D.sub.max Wavelengths cab cag car ______________________________________ 407 to 423 nm 65 to 93 2 to 27 39 to 79 453 to 456 nm 89 to 101 10 to 25 12 to 25 492 to 496 nm 60 to 74 65 to 81 1 to 10 538 to 541 nm 4 to 14 88 to 103 13 to 25 584 to 591 nm 1 to 3 50 to 75 65 to 88 633 to 646 nm 1 to 3 1 to 4 84 to 109 ______________________________________
D.sub.max marking the range of the maxima of the three spectral density curves, which is spaced from the optical density of the white surface D.sub.O by a distance corresponding to the density of the solid areas obtained by printing with normal inking.

REFERENCES:
patent: 2666715 (1954-01-01), Syreeni
patent: 3213787 (1965-10-01), Miller
patent: 3381612 (1968-05-01), Lecha
patent: 3420170 (1969-01-01), Smith
patent: 3427967 (1969-02-01), Thielen
patent: 3470054 (1969-09-01), Tyrrell
hardy et al., The Reproduction of color. In Interchemical Review, ed. by Mildred Forman, N. Y., Research Laboratories of Interchemical Corp. Vol. 9, Spring-Summer 1950, Nos. 1-2, pp. 3-12.

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