Power supply device and image forming apparatus

Details Power supply device and image forming apparatus Power supply device and image forming apparatus

2008-03-11

2010-12-21

Fureman, Jared (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

One source floats across or compensates for other source

C399S085000, C399S088000, C399S089000

Reexamination Certificate

active

07855471

ABSTRACT:
A voltage converting unit converts a first voltage of an auxiliary power supply unit into a second voltage. A voltage determining unit determines whether the second voltage exceeds a predetermined threshold. A first switch, which is arranged between the voltage converting unit and a load, switches on and off a supply of an electric power of the second voltage to the load. When it is determined that the second voltage exceeds the predetermined threshold, a voltage-conversion control unit controls the voltage converting unit to stop converting the voltage, and then a switching control unit controls the first switch to supply the electric power of the second voltage to the load.

REFERENCES:
patent: 5754419 (1998-05-01), Ho
patent: 5786992 (1998-07-01), Vinciarelli et al.
patent: 6236191 (2001-05-01), Chaffai
patent: 6388397 (2002-05-01), Iwahori
patent: 6434029 (2002-08-01), Cyr et al.
patent: 6525513 (2003-02-01), Zhao
patent: 6542705 (2003-04-01), Fujita et al.
patent: 6753515 (2004-06-01), Miyahara et al.
patent: 6847792 (2005-01-01), Nakafuji et al.
patent: 6941088 (2005-09-01), Atsushi et al.
patent: 6946629 (2005-09-01), Miyahara et al.
patent: 7002112 (2006-02-01), Kishi et al.
patent: 7024128 (2006-04-01), Hiroto
patent: 7054570 (2006-05-01), Kishi et al.
patent: 7122767 (2006-10-01), Sato et al.
patent: 7127189 (2006-10-01), Takamatsu et al.
patent: 7135660 (2006-11-01), Miyahara et al.
patent: 7214985 (2007-05-01), Lotfi et al.
patent: 7215101 (2007-05-01), Chang
patent: 7245510 (2007-07-01), Baurle et al.
patent: 7336002 (2008-02-01), Kato et al.
patent: 7405954 (2008-07-01), Baurle et al.
patent: 7498783 (2009-03-01), Johnson
patent: 7546057 (2009-06-01), Muraishi
patent: 7583910 (2009-09-01), Matsumoto et al.
patent: 7609988 (2009-10-01), Kishi et al.
patent: 7622898 (2009-11-01), Shimizu et al.
patent: 2003/0030421 (2003-02-01), Loef et al.
patent: 2004/0202490 (2004-10-01), Okamoto
patent: 2004/0251854 (2004-12-01), Matsuda et al.
patent: 2007/0059016 (2007-03-01), Sato et al.
patent: 2007/0212103 (2007-09-01), Kikuchi
patent: 2008/0031652 (2008-02-01), Yoda
patent: 2008/0112722 (2008-05-01), Hasegawa
patent: 2008/0253787 (2008-10-01), Yoda
patent: 2008/0304852 (2008-12-01), Kishi
patent: 2009/0033294 (2009-02-01), Odajima et al.
patent: 8-79913 (1996-03-01), None
patent: 2004-159405 (2004-06-01), None
patent: 2004-286869 (2004-10-01), None
patent: 2006-17866 (2006-01-01), None
patent: 2006-58731 (2006-03-01), None
patent: 2006-58732 (2006-03-01), None
patent: 2006-58824 (2006-03-01), None
patent: 2006-78608 (2006-03-01), None
patent: 2006-78700 (2006-03-01), None
patent: 2006-78708 (2006-03-01), None
patent: 2006-78771 (2006-03-01), None
patent: 2006-106717 (2006-04-01), None
patent: 2006-106725 (2006-04-01), None
patent: 2006-139154 (2006-06-01), None
patent: 2006-154409 (2006-06-01), None
patent: 2006-162919 (2006-06-01), None
patent: 2006-171089 (2006-06-01), None
patent: 2006-208686 (2006-08-01), None
patent: 2006-209142 (2006-08-01), None
patent: 2006-211768 (2006-08-01), None

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