Image forming apparatus and method of detecting amount of...

Details Image forming apparatus and method of detecting amount of... Image forming apparatus and method of detecting amount of...

2008-10-20

2011-10-11

Gray, David (Department: 2852)

Electrophotography

Diagnostics

Consumable

C399S030000, C399S055000, C399S279000, C399S285000

Reexamination Certificate

active

08036544

ABSTRACT:
An image forming apparatus has a developer container containing a developer and a developer carrying member for carrying the developer and adapted to switch an AC voltage to be applied to the developer carrying member. The apparatus includes a detecting member for detecting the amount of developer in the developer container and a processing portion for determining the amount of developer in the developer container according to the value output by the detecting member when the AC voltage is applied to the developer carrying member. The processing portion is adapted to determine the amount of developer by executing a process that corresponds to the operation of switching the AC voltage.

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English machine translation of Japanese reference Yamauchi (JP pub 2002-244365 A).
Chinese Office Action for Application No. 2005101051868 issued Nov. 30, 2007.

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