Electrophotography – Control of electrophotography process – Of plural processes
Reexamination Certificate
2008-05-27
2008-05-27
Gleitz, Ryan (Department: 2852)
Electrophotography
Control of electrophotography process
Of plural processes
C399S066000
Reexamination Certificate
active
07379684
ABSTRACT:
Optimization of transfer settings for a given paper and environmental condition is achieved by running a series of prints with varying settings of a transfer parameter such as voltage or current. The mass remaining on the intermediate belt after transfer is monitored for each of the prints. This may be achieved using the same sensor used to monitor and control the developed mass on the intermediate transfer member, such as a transfer belt. A suitable sensor is an Extended Toner Area Coverage (ETAC) mass sensor. Because the control is based on actual conditions for a given paper and environment, it can ensure optimum copy quality over a wide range of papers and conditions, while enabling the minimum target mass per unit area to assure the proper density.
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patent: 6661978 (2003-12-01), Brewington
patent: 7054568 (2006-05-01), Mizes et al.
patent: 2005/0265739 (2005-12-01), Hamby et al.
Gleitz Ryan
Oliff & Berridg,e PLC
Xerox Corporation
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