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Browse Prior Art Database

Copy Quality Enhancement Method and Apparatus

IP.com Disclosure Number: IPCOM000048107D
Original Publication Date: 1981-Dec-01
Included in the Prior Art Database: 2005-Feb-08

Publishing Venue

IBM

Related People

Authors:
Queener, CA [+details]

Abstract

Shadowgraph techniques in a xerographic copier/ duplicator enhance the output copy quality from conventional originals (line copy and large areas of solid blacks) by making the characters broader in line copy and the blacks more dense. The characters on line copy are made broader and black areas in general are made more dense by projecting a line screen pattern on the photoconductor through a self focusing fiber-optic array either immediately following or prior to the conventional exposure step of xerography.