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Proceedings Paper

Color To Colorant Conversions In A Colorimetric Separation System
Author(s): Richard Holub; Wayne Kearsley
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Paper Abstract

Within several years of establishment of the CIE's Standard Observer, Neugebauer based upon it a device-independent interpretation of ink mixture in halftone color reproduction. Despite limitations of the model, his approach is of fundamental importance at a time in which document preparation in distributed computing environments is coming of age. Fruition of this technology demands a device independent or colorimetric method for representing and rendering color. A commercial, digital system for implementing such an approach (Kodak Designmaster® 8000) has been described and will be reviewed here with particular regard to the output of color imagery on four-color printers. Inversion of Neugebauer's model for conversion of color to device specific signals must be constrained by the color gamut of the output medium and the utilization of the black printer (Gray Component Replacement). The interaction of the black printer with the device gamut and its effect on image quality and metamerism will receive detailed consideration. It will be shown that colorimetry is a powerful tool in maintaining accurate color reproduction during substitution of black for chromatic components, but that properties of the colorants must also be considered in order to realize commercially acceptable GCR. Section 7 of the paper is an enumeration of summary conclusions.

Paper Details

Date Published: 12 June 1990
PDF: 12 pages
Proc. SPIE 1184, Neugebauer Memorial Seminar on Color Reproduction, (12 June 1990); doi: 10.1117/12.963894
Show Author Affiliations
Richard Holub, Eastman Kodak Company (United States)
Wayne Kearsley, Eastman Kodak Company (United States)

Published in SPIE Proceedings Vol. 1184:
Neugebauer Memorial Seminar on Color Reproduction
Kazuo Sayanagi, Editor(s)

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