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Compensation for Secondary-Color Spot Size in Ink-Jet Printing

IP.com Disclosure Number: IPCOM000039282D
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue

IBM

Related People

Authors:
Palmer, DR [+details]

Abstract

A method is disclosed for compensating for the difference in spot size between primary and secondary colors by increasing the line weight of primary color characters to more closely approximate the weight of the secondary color characters. By implementing this algorithm in realtime as the character columns are printed, storage for the compensated font (Image Omitted) is not needed. In addition, the algorithm will operate on any font available to the printer. The algorithm is simple enough to have little or no effect on printer throughput or microcode size. Many ink-jet printers provide inks for only the primary subtractive colors (cyan, magenta, and yellow). Secondary subtractive colors (red, green, and blue) are created by printing two primary colors in the same place on the page.