Dynamic photo receptor wear rate adjustment based on...

Details Dynamic photo receptor wear rate adjustment based on... Dynamic photo receptor wear rate adjustment based on...

2011-05-24

2011-05-24

Lee, Susan S (Department: 2884)

Electrophotography

Control of electrophotography process

Having temperature or humidity detection

C399S026000, C399S050000

Reexamination Certificate

active

07949268

ABSTRACT:
A xerographic marking engine adjusts a charging actuator value, such as an AC peak-to-peak voltage or an AC peak-to-peak current, based on a determined knee value, VKNEE, of a charge curve for an imaging apparatus photoreceptor within the xerographic marking engine and environmental sensor data. The environmental sensor data may measure environment temperature and environment humidity. In near A-zone environments, for example, operational environments in which the temperature is 80 degrees Fahrenheit and the relative humidity is 80%, the charging actuator value may be selected to achieve a predetermined photoreceptor wear rate that avoids print quality defects due to lateral charge migration. In other than A-zone environments, the charging actuator value may be selected to minimize the photoreceptor wear rate, while avoiding print quality defects. The described approach allows optimal photoconductor wear to be achieved, in all operational environments, without increasing the risk of print quality defects.

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