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:
Jan. 22, 2002
Filed:
Jul. 27, 2000
Naoto Yoshino, Ebina, JP;
Masaaki Takahashi, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
There is provided an image forming apparatus capable of finely cleaning a transfer roll at all times by regulating the relation between a mechanical adhesion force of toner to the surface of the transfer roll and a mechanical adhesion force of toner to the surface of an image carrier with which the transfer roll comes in press contact. At the time of cleaning the transfer roll, both the electrostatic adhesion force and the mechanical adhesion force of charged colorant to the surface of the belt-like image carrier are set larger than the electrostatic adhesion force and the mechanical adhesion force of charged colorant to the surface of the transfer roll.