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.:
Date of Patent:
Jul. 21, 2009
Filed:
Jun. 19, 2003
Toshiyuki Kikuchi, Chiba, JP;
Toshiyuki Kikuchi, Chiba, JP;
Ricoh Company, Ltd., Ota-ku, JP;
Abstract
An image forming apparatus of the present invention includes a fixing device for fixing a toner image on a sheet with heat. A main and an auxiliary power supply feed power to the fixing device. A switching circuit selectively establishes a usual mode in which the main power supply is connected to the fixing device or an auxiliary mode in which the main and auxiliary power supplies both are connected to the fixing device. A control circuit causes the switching circuit to establish the auxiliary mode in the event of continuous fixation, controls, in the usual mode, the amount of power fed from the main power supply to the fixing device in accordance with the output of a temperature sensor responsive to the temperature of the fixing device, and controls, in the auxiliary mode, the amount of power fed from the main and auxiliary power supplies to the fixing device without regard to the output of the temperature sensor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile