Process control by creating and sensing half-tone test patches
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United States of America Patent
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-
Mar 12, 1991
Grant Date -
N/A
app pub date -
May 10, 1989
filing date -
May 10, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus which controls the parameters in a processing station of an electrophotographic printing machine having a photoconductive member. A test patch having a half tone image is recorded on the photoconductive member. The test patch is developed with developer material to form a developed half tone image on the photoconductive member. In response to the average density of the developed half tone image on the photoconductive member, the parameters of the processing station are regulated.
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Cited Art Landscape
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