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. 11, 2007
Filed:
Oct. 14, 2005
Kazuo Shishido, Yokohama, JP;
Kazuo Shishido, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention aims to prevent an image deterioration resulting from a fixing belt rising in temperature too much, and prevent heat of the fixing belt from being transmitted to peripheral members around a fixing apparatus such as a photosensitive drum so as not to adversely effect the peripheral members. A fixing apparatushas a fixing rollerand a fixing beltthat heat-fix an image on to a recording material P by a fixing nip W, partition wallstothat surround the fixing beltto thereby suppress the air naturally entering into around the fixing belt, and a cooling unit that cools the fixing beltin a closed spaceformed by the partition wallsto. The cooling unit has a supply ductthrough which a supply fansupplies air to the closed spacefrom below, a cooling fanthat blows the air supplied from the supply ducttoward the fixing belt, and a discharge ductthrough which a discharge fandischarges the air from an upper portion of the closed space