Browse Prior Art Database

Patch Density Quantification

IP.com Disclosure Number: IPCOM000048521D
Original Publication Date: 1982-Feb-01
Included in the Prior Art Database: 2005-Feb-08

Publishing Venue

IBM

Related People

Authors:
Fry, GW Korsch, RF [+details]

Abstract

A properly operating copier copies a known density master patch as a range of copy densities. The copy patch density is quantified by sensing light reflected from two successive patches and digitally displaying the average density as a function of the known density of patches on a calibration sheet.