Electrophotographic apparatus

Details Electrophotographic apparatus Electrophotographic apparatus

2007-07-17

2007-07-17

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Of plural processes

C399S074000, C399S301000, C347S116000

Reexamination Certificate

active

10917471

ABSTRACT:
An image detector has an I/V converter for converting, into a voltage output., a current output as a result of a photoelectric element arranged in a traveling direction of an intermediate transfer belt having received light reflected from the intermediate transfer belt and light reflected from toner images formed on the intermediate transfer belt; a peak-hold unit for holding an output voltage into which the light reflected from the intermediate transfer belt has been converted by the I/V converter; and a computation unit for detecting a difference between the output voltage of the peak-hold unit and an output voltage into which the light reflected from the toner images of respective colors has been converted by the I/V converter.

REFERENCES:
patent: 6701117 (2004-03-01), Kaji
patent: 2004/0141765 (2004-07-01), Shimura et al.
patent: 2004/0208661 (2004-10-01), Kitagawa et al.
patent: 2005/0163519 (2005-07-01), Takahashi
patent: 2005/0232648 (2005-10-01), Nishizawa et al.
patent: 2761287 (1998-03-01), None
patent: 3068865 (2000-05-01), None

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