Electrophotography – Diagnostics – Consumable
Reexamination Certificate
2005-09-20
2005-09-20
Grimley, Arthur T. (Department: 2852)
Electrophotography
Diagnostics
Consumable
C399S030000
Reexamination Certificate
active
06947677
ABSTRACT:
The image forming apparatus has a developer container containing a developer therein, a developer toner density detecting portion for detecting the permeability of the developer in the developer container to thereby detect toner density, and an engine controller for detecting whether the image forming apparatus has gone wrong, on the basis of the toner density detected by the developer toner density detecting portion. Thereby, it becomes possible to detect the failure of a developing apparatus reliably and early by an inexpensive construction.
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Kinoshita Masahide
Murayama Kazunari
Numagami Atsushi
Ueno Takahito
Uyama Masao
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Gleitz Ryan
Grimley Arthur T.
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