Color signal conversion method for image copying

Details Color signal conversion method for image copying Color signal conversion method for image copying

1987-12-17

1989-09-26

Albritton, C. L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358300, 358302, 358 75, 358443, 346150, 3461531, 346160, G03G 1501, H04N 146

Patent

active

048705063

ABSTRACT:
In a color copier, color infidelities in the copied image resulting from overlapping spectral absorption characteristics of the cyan, magenta and yellow layers in the recording material and from the superposed spectral sensitivities of the red, green and blue decomposition systems in the reader/scanner of the original are compensated for by determining the mixture components in advance using a shade wedge, and subtracting such components during the copying process.

REFERENCES:
patent: 4687334 (1987-08-01), Miyakawa

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