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. 21, 1992
Filed:
May. 07, 1990
Satoru Fukushima, Tokyo, JP;
Kenichi Takeda, Yokohama, JP;
Atsushi Takeda, Kawasaki, JP;
Yoshio Uchikawa, Yokohama, JP;
Takashi Hasegawa, Matsudo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a movable image bearing member; an image forming device for forming a toner image on the image bearing member; a transfer device for electrostatically transferring the toner image from the image bearing member onto a transfer material at an image transfer position; a transfer material carrying device for carrying the transfer material to the transfer position; wherein the transfer device supplies different electric charge amount per unit area to an end of the transfer material in a direction of conveyance of the transfer material by the transfer material carrying device and to another portion of the transfer material.