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. 25, 2006
Filed:
Jul. 31, 2003
Satoshi Kojima, Shizuoka, JP;
Toshiyuki Ehara, Kanagawa, JP;
Hideaki Matsuoka, Shizuoka, JP;
Junichiro Hashizume, Shizuoka, JP;
Ryuji Okamura, Shizuoka, JP;
Koji Hitsuishi, Shizuoka, JP;
Hironori Ohwaki, Shizuoka, JP;
Kazuto Hosoi, Shizuoka, JP;
Satoshi Kojima, Shizuoka, JP;
Toshiyuki Ehara, Kanagawa, JP;
Hideaki Matsuoka, Shizuoka, JP;
Junichiro Hashizume, Shizuoka, JP;
Ryuji Okamura, Shizuoka, JP;
Koji Hitsuishi, Shizuoka, JP;
Hironori Ohwaki, Shizuoka, JP;
Kazuto Hosoi, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic photosensitive member production process is provided having the steps of placing a cylindrical substrate having a conductive surface in a first film-forming chamber, and decomposing a source gas with high-frequency power to deposit on the cylindrical substrate a first layer formed of a non-single-crystal material, taking out of the first film-forming chamber the cylindrical substrate with the first layer deposited thereon, and placing the cylindrical substrate with the first layer deposited thereon in a second film-forming chamber, and decomposing a source gas with a high-frequency power to deposit on the first layer a second layer having an upper-part blocking layer formed of a non-single-crystal material. Even where abnormal growth portions called spherical protuberances are present on the photosensitive member surface, they can be made not to appear on images, and image defects can vastly be remedied.