G - Physics – 03 – G
Patent
G - Physics
03
G
341/112, 314/7
G03G 13/00 (2006.01) G03G 15/00 (2006.01)
Patent
CA 1156331
-1- ABSTRACT The present invention is a sample data control system having (a) a charge control loop for eliminating photoreceptor dark discharge variations due to photoreceptor fatigue and aging to maintain a constant dark development potential, (b) an illumination control loop eliminating variations in the lamp irradiance to maintain a constant background potential, (c) a toner dispensing control loop regulating toner flow using a sensor approach directly sensing developed images to eliminate toner mass variations and (d) a bias control loop to maintain optimum density images on the photoreceptor in spite of changing humidity conditions. Two test targets, each having two test patches are selectively exposed in various combinations to provide test data in the photoreceptor image area for suitable sensing and control of the charge, illumination, toner dispensing, and bias control loops.
373505
Sim & Mcburney
Xerox Corporation
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