Method and apparatus for recording a full-color image with a plu

Details Method and apparatus for recording a full-color image with a plu Method and apparatus for recording a full-color image with a plu

1984-03-05

1987-07-28

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 75, 358 79, G03F 308, H04N 146

Patent

active

046834923

ABSTRACT:
A color recording method allows digital color recording by calculating fractional areas to be covered by each color used in recording. A plurality of sets of area factors for the colors are calculated from a plurality of sets of color equations corresponding to a plurality of sets of magnitude relationships between the area factors. One set of area factors having the same magnitude relationships as the set of magnitude relationships corresponding to the set of color equations from which the one set of area factors was calculated is selected for color image production. The colors can consist, for example, of three subtractive primary colors or of black and two subtractive primary colors, in different superposition combinations. A color recording apparatus has a camera, a processor, a memory and a printer. Reflectivities of inks of different colors are measured and substituted in the color equations. An optimum color image is produced, compensated for differences between input and output system characteristics.

REFERENCES:
patent: 3404221 (1968-10-01), Loughren
patent: 3801736 (1974-04-01), Kosaka et al.
patent: 3804531 (1974-04-01), Kosaka et al.
patent: 4413275 (1983-11-01), Horiuchi et al.
patent: 4533928 (1985-08-01), Sugiura et al.
Hardy, Arthur C., et al., "Color Correction in Color Printing", Journal of the Optical Society of America, vol. 38, No. 4, Apr. 1948, pp. 300-307.

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