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:
Oct. 22, 1996
Filed:
Jun. 10, 1994
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrophotographic process in which image information exposure step and a developing step are substantially simultaneously carried out to opposite sides of a photosensitive member includes preparing an electrophotographic photosensitive member having a conductive base layer transmitting light and a photosensitive layer thereon; exposing the conductive base side of the photosensitive member to light information; rubbing an opposite side of the photosensitive member with a developer supplied with a developing bias voltage of the same polarity as the polarity of the developer in a region including an upstream side end a downstream side of an image exposure region of the photosensitive member; wherein an absolute value of a sum of a triboelectric charge potential provided on a surface of the photosensitive member by rubbing between the developer and the photosensitive member, and a surface potential of the photosensitive member provided by application of the developing bias upstream of the image exposure region, is larger than an absolute value of the developing bias.