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:
Dec. 17, 2002
Filed:
May. 23, 2001
Shohji Hayashi, Yokohama, JP;
Tadao Uehara, Kakogawa, JP;
Kenichi Hasegawa, Kawasaki, JP;
Setsuo Soga, Mitaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device having an endless fixing belt configured to convey a sheet-like medium on which a toner image is to be fixed, heating and fixing rollers having the fixing belt wound thereon, and a pressing roller disposed opposite to the fixing roller having fixing belt wound thereon to form a nip portion between the fixing belt and pressing roller. The fixing device also including first to third heaters provided in the heating, pressure and fixing rollers respectively, and first to third voltage applying devices configured to apply voltages to the first to third heaters respectively. The nip portion is configured to perform the fixing only by pressure contact between said fixing and pressing rollers via said fixing belt.