Image forming apparatus

Electrophotography – Machine operation – Having power supply

Reexamination Certificate

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Details

C399S008000, C399S037000, C358S001130, C358S001140

Reexamination Certificate

active

07099604

ABSTRACT:
A multi-function printer (MFP) has a main control circuit for setting the operation mode of the apparatus to either a normal operation mode or a power-saving operation mode. There are provided a main power supply circuit and an auxiliary power supply circuit for supplying power to the main control circuit in the normal operation mode and in the power-saving operation mode, respectively. The MFP also has a power detection circuit for detecting a state of power supply from the main power supply circuit to the main control circuit. If a power-save request is followed by a start-up request, when an amount of power detected by the power detection circuit is greater than a predetermined value, the main control circuit stops an operation relating to the power-save request and initiates an operation according to a start-up request.

REFERENCES:
patent: 4745436 (1988-05-01), Matsuura
patent: 6134401 (2000-10-01), Yun et al.
patent: 6166355 (2000-12-01), Watanabe et al.
patent: 6181895 (2001-01-01), Hirst
patent: 6674980 (2004-01-01), Nakaya
patent: 2004/0107371 (2004-06-01), Kimura et al.
patent: 1-277915 (1989-11-01), None
patent: 4-67733 (1992-03-01), None
patent: 8-63051 (1996-03-01), None
patent: 2001-094693 (2001-04-01), None
patent: 2002-094690 (2002-03-01), None
patent: 2003-039794 (2003-02-01), None
patent: 2003-228444 (2003-08-01), None

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