Image forming apparatus and method for monitoring the degree...

Details Image forming apparatus and method for monitoring the degree... Image forming apparatus and method for monitoring the degree...

Filed on

2011-07-12

Date issued

2011-07-12

Examiner

Beatty, Robert (Department: 2852)

Patent Class

Electrophotography

SubClass

Diagnostics

SubSubClass

Consumable

Type

Reexamination Certificate

Status

active

Patent number

07978986

Description

ABSTRACT:
Upon generation of an image forming request, a control unit sets a request flag in a nonvolatile rewritable memory. A toner consumption monitoring unit calculates amount of toner consumption during a process of image formation based on the image forming request and the request flag. Upon completion of the process of image formation, the control unit deletes the request flag from the memory unit. Thus, it becomes possible to determine whether the amount of toner consumption is correctly updated based on the request flag and accurately monitor the amount of toner consumption.

REFERENCES:
patent: 6421137 (2002-07-01), Endo
patent: 6631248 (2003-10-01), Serizawa
patent: 7403724 (2008-07-01), Yamaguchi
patent: 2007/0122166 (2007-05-01), Takahashi et al.
patent: 11327381 (1999-11-01), None
patent: 2003-91218 (2003-03-01), None
patent: 2004361544 (2004-12-01), None

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