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:
Jun. 26, 2001
Filed:
Nov. 26, 1999
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/500 ; G03G 1/516 ;
U.S. Cl.
CPC ...
G03G 1/500 ; G03G 1/516 ;
Abstract
An image forming apparatus includes an image forming device for electrostatically forming a toner image onto a transfer material, a charger for previously charging the surface of the transfer material to which the toner image is transferred to a polarity opposite to the normal charge polarity of the toner, and a control device for controlling a voltage to be applied to the charger in accordance with the kind of transfer material.