System for printing color images with extra colorants in additio

Details System for printing color images with extra colorants in additio System for printing color images with extra colorants in additio

1996-09-27

1999-02-09

Evans, Arthur G.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

395101, 358518, 382167, B41B 1500

Patent

active

058705309

ABSTRACT:
In a "hi-fi" color printing system, wherein colorants of secondary colors beyond the regular CMYK primary colorants are available, the colorants of the secondary colors are substituted for combinations of the primary colorants in order to obtain a full color gamut. The functions by which colorants of the secondary colors are substituted for primary colorant are non-linear through a path in the color space.

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Ostromoukhov, "Chromaticity Gamut Enhancement by Heptatone Multi-Color Printing," SPIE, vol. 1909, p. 139, Jun. 1993.
Boll, "A Color to Colorant Transformation for a Seven Ink Process," presented at the IS&T-SPIE Symposium on Electronic Imaging, Science and Technology, Feb. 1994.
"New Era of Digital Photo Printing . . . ", Hard Copy Observer, Oct. 1996, p. 1, and its ancillary articles.

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