Electrophotography – Diagnostics – Unit or part identification
Reexamination Certificate
2008-06-12
2010-06-22
Gray, David M (Department: 2852)
Electrophotography
Diagnostics
Unit or part identification
C399S013000, C399S024000, C399S035000, C399S120000
Reexamination Certificate
active
07742708
ABSTRACT:
An image forming device includes a device body, a cartridge detachably attached to the device body so as to accommodate material which includes one of consumable material and waste material, a sensor configured to emit and receive sensing light and give a detection value corresponding to an amount of the material in the cartridge which amount is detected based upon an intensity of the sensing light received thereby, a received light changing member configured to change the intensity of the sensing light received by the sensor, and a judging unit configured to judge based upon a change of the detection value given by the sensor whether the cartridge is a new one.
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Banner & Witcoff , Ltd.
Brother Kogyo Kabushiki Kaisha
Fekete Bamabas T
Gray David M
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