Image forming device including AC loads driven by an AC...

Electrophotography – Machine operation – Having power supply

Reexamination Certificate

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Details

C399S037000

Reexamination Certificate

active

07062191

ABSTRACT:
A printer (image forming device) (10), which includes AC loads driven by an AC power, is connected to an external device (30) via a single power line for a logic operation and a signal line. More specifically, a printer driver (11) and an engine controller (13) operate on a 5V power supply voltage obtained via a USB cable (20). When a standby state is entered, a relay (17) is turned off, an AC power supply to a drive power supply (19) is disconnected, and a power supply to the AC loads is disconnected. When the standby state is released by a signal received from the PC (30), an ON signal is generated for the relay (17) to supply the AC power. In this way, the standby power is reduced to improve energy saving.

REFERENCES:
patent: 5905899 (1999-05-01), Kim et al.
patent: 6804482 (2004-10-01), Kim et al.
patent: 6909616 (2005-06-01), Kim
patent: 2002/0171694 (2002-11-01), Takayanagi
patent: 1171645 (1998-01-01), None
patent: 1319941 (2001-10-01), None
patent: 2001-147747 (2001-05-01), None
patent: 2001-211274 (2001-08-01), None
patent: 2001-218281 (2001-08-01), None
patent: 2002-007003 (2002-01-01), None
patent: 2003-118204 (2003-04-01), None

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