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. 01, 2008
Filed:
Oct. 18, 2005
Fumiteru Gomi, Chiba-ken, JP;
Fumiteru Gomi, Chiba-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic image forming apparatus in which a reduction in image density when continuous sheet supply endurance is effected under a low-humidity environment is prevented, and under a high-humidity environment, an image deletion is prevented. A photosensitive member has an undercoat layer, a charge generating layer and a charge transport layer, and the surface layer of the photosensitive member contains a compound of which at least one polymerization functional group has been polymerized or cross-linked and hardened. Also, the hardening of the surface layer is effected by electron irradiation. A temperature raising apparatus for heating the surface of the photosensitive member is controlled by a controlling device to thereby control the surface temperature of the photosensitive member. The controlling device has two or more stages of set temperatures, and uses a high set temperature when the photosensitive member is used under an environment in which the absolute amount of water vapor is great.