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. 14, 1997
Filed:
Jul. 19, 1995
Osamu Watanabe, Tokyo, JP;
Nobuyuki Kume, Yokohama, JP;
Hiroshi Matsumoto, Kawasaki, JP;
Sorin Den, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes an image bearing member; a charging member for charging the image bearing member at a charging position, the charging member being contactable to the image bearing member; wherein the charging member is adapted to be supplied with a first DC voltage of a predetermined polarity for forming an image on the image bearing member and contains ion conduction material, and wherein the charging member is adapted to be supplied with a second voltage of a polarity opposite from the predetermined polarity when such an area of the image bearing member as is going to a non-image area of the image bearing member is at the charging position.