Color screen indicator

Details Color screen indicator Color screen indicator

1979-12-26

1981-09-01

Pieprz, William

Geometrical instruments

Miscellaneous

Light direction

434331, 350321, 356150, 101211, 1014011, G02B 270

Patent

active

042863856

ABSTRACT:
A composite indicator for use with overlay process color screen tints in offset color printing comprised of a composite screen made of relatively angled color screens. The respective dot patterns of the color screens have the word of the process color associated with that angle worked in by an out-of-phase dot pattern with respect to that screen background dot pattern. An overlaying color screen, when properly angled, causes, by out-of-phase moire pattern effect, the name of that color to be visually readable as a relatively lighter or darker pattern on a contrasting background.

REFERENCES:
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patent: 3425770 (1969-02-01), Mueller et al.
patent: 3457421 (1969-07-01), Bayha
patent: 3784298 (1974-01-01), Wicker
patent: 3876304 (1975-04-01), Novak

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