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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6522844 B1

PDFFull Text
Date of Patent:
Feb. 18, 2003

Filed:

Jul. 16, 2001

Heater control apparatus and image forming apparatus having a plurality of heaters which are controlled to be changeably connected in a serial mode and a parallel mode so as to suppress flicker

Applicant:
Inventors:

Hideo Yamane, Tokyo, JP;

Youbao Peng, Tokyo, JP;

Satoshi Sakata, Tokyo, JP;

Hiroyuki Watanabe, Tokyo, JP;

Assignee:

Konica Corporation, Tokyo, JP;

Attorney:

Frishauf, Holtz, Goodman & Chick, PC

Primary Examiner:

Fred L Braun

Int. Cl.
CPC ...
G03G 1/520 ;
U.S. Cl.
CPC ...
G03G 1/520 ;
Abstract

A heater control apparatus is provided for controlling a plurality of heaters used for fixing operations of an image forming apparatus, wherein each of the heaters is incorporated inside one of a plurality of rollers. The heater control apparatus includes: a plurality of switching elements to switch flowing paths of electronic currents supplied to the heaters from a common power source; a switching control section to control the switching elements so that a connecting mode of the heaters is changeable between a serial connection mode and a parallel connection mode; and a plurality of temperature detecting devices to detect temperatures of the rollers heated by the heaters, each of the temperature detecting devices corresponding to each of the rollers. The switching control section controls the switching elements so as to change the connecting mode of the heaters according to temperature conditions of the rollers.

Find Patent Forward Citations

Yamane, Hideo. (2003). Heater control apparatus and image forming apparatus having a plurality of heaters which are controlled to be changeably connected in a serial mode and a parallel mode so as to suppress flicker (U.S. Patent No. 6522844). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6522844

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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