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. 23, 2014
Filed:
May. 31, 2012
Munehito Kurata, Suntou-gun, JP;
Daizo Fukuzawa, Mishima, JP;
Noriaki Sato, Suntou-gun, JP;
Kuniaki Kasuga, Mishima, JP;
Tomonori Sato, Gotemba, JP;
Mahito Yoshioka, Numazu, JP;
Munehito Kurata, Suntou-gun, JP;
Daizo Fukuzawa, Mishima, JP;
Noriaki Sato, Suntou-gun, JP;
Kuniaki Kasuga, Mishima, JP;
Tomonori Sato, Gotemba, JP;
Mahito Yoshioka, Numazu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A fixing apparatus includes: two rotatable members, for forming a nip, including a region where an outer diameter is increased from a longitudinal central portion toward a longitudinal end portion; a heater; and a controller for controlling a heat generation distribution of the heater. The controller is capable of controlling the heater so that the heat generation distribution of the heater is such that a heat generation amount at the longitudinal end portion is larger than that at the longitudinal central portion in a period from start of the heater until the recording material reaches the nip. A ratio of the heat generation amount at the longitudinal end portion to that at the longitudinal central portion is larger when a cumulative amount of use of the fixing apparatus is larger than a predetermined amount than when the cumulative amount of use is smaller than the predetermined amount.