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:
Nov. 07, 2017
Filed:
Jun. 22, 2016
Yuuji Wada, Kanagawa, JP;
Naohiro Kumagai, Kanagawa, JP;
Seiichi Kogure, Kanagawa, JP;
Junpei Fujita, Kanagawa, JP;
Kazuki Yogosawa, Kanagawa, JP;
Kenji Sugirua, Kanagawa, JP;
Takehide Mizutani, Tokyo, JP;
Tatsuya Ohsugi, Kanagawa, JP;
Hiroyoshi Haga, Kanagawa, JP;
Hirokazu Ishii, Tokyo, JP;
Yuuji Wada, Kanagawa, JP;
Naohiro Kumagai, Kanagawa, JP;
Seiichi Kogure, Kanagawa, JP;
Junpei Fujita, Kanagawa, JP;
Kazuki Yogosawa, Kanagawa, JP;
Kenji Sugirua, Kanagawa, JP;
Takehide Mizutani, Tokyo, JP;
Tatsuya Ohsugi, Kanagawa, JP;
Hiroyoshi Haga, Kanagawa, JP;
Hirokazu Ishii, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a rotatable image bearer, a toner image forming device, a transfer device, a transfer bias power source, and a cleaner. The toner image forming device is to form a toner image on the image bearer. The transfer device contacts a surface of the image bearer to form a transfer nip between the transfer device and the image bearer. The transfer bias power source is to output a transfer bias to transfer the toner image from the image bearer onto a recording medium in the transfer nip. The cleaner is disposed downstream from the transfer nip in a direction of rotation of the image bearer, to electrostatically attract and remove toner from the surface of the image bearer to a surface of the cleaner. The transfer bias includes an alternating current component.