Printing black and white reproducible color documents

Details Printing black and white reproducible color documents Printing black and white reproducible color documents

1996-10-02

1997-12-23

Rogers, Scott A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358501, 358530, 358401, G06K 1502, H04N 150, H04N 156, H04N 123

Patent

active

057014019

ABSTRACT:
A color image is reproduced with a set of colors wherein each color is defined in terms of a pattern block. Pattern blocks include a pattern using the color to be reproduced and white in density-related combinations so that the luminance difference between the color and white can be retained when copied or printed with a black printer. The patterns add among colors thus allowing combination colors to be represented in terms of added patterns of colors represented in black as distinct patterns.

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patent: 5291243 (1994-03-01), Heckman et al.
patent: 5321470 (1994-06-01), Hasuo et al.

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