Electrophotography – Diagnostics – Cleaning
Reexamination Certificate
2006-05-15
2009-11-03
Gray, David M (Department: 2852)
Electrophotography
Diagnostics
Cleaning
C399S036000, C399S037000, C399S358000, C399S360000
Reexamination Certificate
active
07613407
ABSTRACT:
An image forming apparatus includes a waste toner system that collects waste toner in a waste toner container. An amount of waste toner collected in the container is increased by using a driven toner distributing member that distributes accumulated toner within the container. The toner distributing member may be driven by a shared speed-controlled motor that further drives an image forming process member. The waste toner system may detect the accumulation of waste toner by monitoring a drive control circuit while the toner distributing member is being driven. For example, a logic circuit may detect the accumulation of waste toner based on monitoring a predetermined frequency of interest of a frequency domain transform of a motor control signal, the frequency of interest associated with the shared motor driving the toner distributing member.
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Chapman Danny Keith
Craig Michael William
Turney Steven Michael
Coats & Bennett
Gray David M
Lexmark International Inc.
Walsh Ryan D
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