Electrophotography – Control of electrophotography process – Control of cleaning
Reexamination Certificate
2008-06-10
2010-10-19
Porta, David P (Department: 2884)
Electrophotography
Control of electrophotography process
Control of cleaning
C399S044000, C399S123000, C399S351000
Reexamination Certificate
active
07817933
ABSTRACT:
A method for controlling blade interference in a single blade or multi-blade xerographic cleaner based on a look-up table for environmental conditions and blade age. Temperature and humidity sensors and a blade age counter are used to provide information to a controller, which adjusts the blade interference through a stepper motor based on the preloaded table. This allows lower blade load in most conditions over life, compared to the known method of setting the initial load high enough to cover these stress factors at worse case levels. The look-up table is empirically determined for a give blade material and xerographic system, e.g., photoreceptor, toner, etc. It takes into account the variation in blade load itself as a function of the environment and blade age.
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patent: 6311038 (2001-10-01), Schlueter
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U.S. Appl. No. 11/877,770, filed Oct. 24, 2007 and entitled Long Life Cleaning System With Replacement Blades by Bruce E. Thayer et al.
U.S. Appl. No. 12/021,500, filed Jan. 29, 2008 and entitled Dual Blade Cleaning System by Bruce E. Thayer et al.
U.S. Appl. No. 12/136,087, filed Jun. 10, 2008 and entitled Variable Interference Cleaning Blade Method by Bruce E. Thayer et al.
U.S. Appl. No. 12/136,086, filed Jun. 10, 2008 and entitled Method for Adjusting Cleaning Blade Load on a Photoreceptor by Bruce E. Thayer et al.
Seyfried Richard W
Thayer Bruce E
Porta David P
Schmitt Benjamin
Xerox Corporation
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