Method and apparatus for controlling the electrostatic parameters of an electrophotographic reproduction device
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United States of America Patent
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Nov 7, 1989
Grant Date -
N/A
app pub date -
Apr 19, 1988
filing date -
Apr 19, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The saturation voltage of a photoconductor used in a discharged area development (DAD) reproduction device is used to control and maintain the voltage vectors that are associated with (1) the photoconductor's fully charged background area, (2) the development electrode voltage at the reproduction device's developer station, (3) the photoconductor voltage in areas that are occupied by image characters having a small surface area, and (4) the photoconductor voltage in a test patch area that is associated with a toner concentration control network having a toner patch sensor. These electrstatic parameters are periodically adjusted, to compensate for changes in the operating characteristics of the photoconductor and the imaging station.
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