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:
Apr. 27, 2004
Filed:
Sep. 04, 2001
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus forms an electrostatic latent image corresponding to an image information signal on an image carrying member, develops the electrostatic latent image using a two component developer of toner particles and carrier particles and transfers the unfixed image to a transfer medium. A fixer is provided with at least a fixing roller and a press roller which nips and delivers the transfer medium to fix the unfixed image. The carrier particles contain a binder resin and magnetic metal oxide and have shape factors SF-1 of 100 to 150 and SF-2 of 100 to 150. The fixing roller has an elastic layer and a release layer of a fluorine resin having an Asker-C hardness between 60° and 85° at the time of application of a 1 kg load.