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. 15, 2003
Filed:
Dec. 11, 2001
Kazumi Yamauchi, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic apparatus is provided having an electrophotographic photosensitive member and an exposure device for forming a static latent image on the electrophotographic photosensitive member surface by scanning with an exposure beam based on an image information. The spot diameter of the exposure beam is 2.5 times or more the size of one pixel of an image picture formed by the electrophotographic apparatus. The electrophotographic photosensitive member has the Fischer hardness of 240 Ns/mm or more in its surface, and the NESA sensitivity of 2000 V·cm /&mgr;J or more, and is provided with an electric charge generating layer and an electric charge transportation layer 30 &mgr;m or less thick.