Electrophotography – Diagnostics – Service mode
Reexamination Certificate
2011-08-02
2011-08-02
Gray, David M (Department: 2852)
Electrophotography
Diagnostics
Service mode
C399S093000, C399S098000, C399S099000, C399S358000, C399S359000
Reexamination Certificate
active
07991304
ABSTRACT:
A diagnostic system that provides a service technician with service information during servicing of an image processing apparatus includes at least one counter that is incremented during operation of the image processing apparatus, a pressure detecting unit that detects a pressure at a point in an air flow path on the condition that the at least one counter is reset to zero after initial servicing of the image processing apparatus, a determining unit that determines whether a difference between the detected pressure and a fault threshold pressure is less than a predetermined margin, and a display unit that displays a fault code indicating additional servicing of the image processing apparatus is recommended on the condition that the determining unit determines that the difference between the detected pressure and the predetermined threshold pressure is less than the predetermined margin.
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Gross Robert A.
Pozniakas Robert Steven
Soures Michael Nicholas
Gray David M
Gray Francis
Oliff & Berridg,e PLC
Xerox Corporation
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