Browse Prior Art Database

QUASI BINARY GREY IMAGING

IP.com Disclosure Number: IPCOM000026350D
Original Publication Date: 1991-Jun-30
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 53K

Publishing Venue

Xerox Disclosure Journal

Abstract

A proposal is made to substitute grey marking materials for colored ones in any highlight or full color electronic imaging system. The substitution would be made at the corresponding image locations where an intermediate level grey signal is desired. The purpose of adding grey is to reliably improve the quality of a given resolution monochrome scanner imaging system by reducing scanning artifacts and improving the information content of the image. This approximates the performance of a higher resolution scanning system without having to actually increase the scan frequency of either the input or output device.

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XEROX DISCLOSURE JOURNAL

QUASI BINARY GREY IMAGING

Proposed Donald R. Lehmbeck U.S. C1.355/328 Classification

Int. C1. G03g 15/01

A proposal is made to substitute grey marking materials for colored ones in any highlight or full color electronic imaging system. The substitution would be made at the corresponding image locations where an intermediate level grey signal is desired. The purpose of adding grey is to reliably improve the quality of a given resolution monochrome scanner imaging system by reducing scanning artifacts and improving the information content of the image. This approximates the performance of a higher resolution scanning system without having to actually increase the scan frequency of either the input or output device.

REFERENCES

For more information on simulated color imaging, see US. Patent No. 4,903,048 "Simulated Color Imaging Using Only Two Different Colorants/Toners" to Harrington which discloses simulated color imaging using grey level patterns produced from two differently colored materials by employing fine dot patterns.

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 3 May/June 1991 199

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200 XEROX DISCLOSURE JOURNAL - Vol. 16, No. 3 May/June 1991

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