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:
Dec. 05, 2017
Filed:
Mar. 09, 2016
Kenji Sugiura, Kanagawa, JP;
Hiroyoshi Haga, Kanagawa, JP;
Hirokazu Ishii, Tokyo, JP;
Naohiro Kumagai, Kanagawa, JP;
Seiichi Kogure, Kanagawa, JP;
Junpei Fujita, Kanagawa, JP;
Takehide Mizutani, Tokyo, JP;
Yuuji Wada, Kanagawa, JP;
Naoto Kochi, Kanagawa, JP;
Tatsuya Ohsugi, Kanagawa, JP;
Kazuki Yogosawa, Kanagawa, JP;
Kenji Sugiura, Kanagawa, JP;
Hiroyoshi Haga, Kanagawa, JP;
Hirokazu Ishii, Tokyo, JP;
Naohiro Kumagai, Kanagawa, JP;
Seiichi Kogure, Kanagawa, JP;
Junpei Fujita, Kanagawa, JP;
Takehide Mizutani, Tokyo, JP;
Yuuji Wada, Kanagawa, JP;
Naoto Kochi, Kanagawa, JP;
Tatsuya Ohsugi, Kanagawa, JP;
Kazuki Yogosawa, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes an image bearer; a toner image forming device; an intermediate transferor; a primary transfer power source; a secondary transfer nip forming device; and a secondary transfer power source to output a secondary transfer bias. One of two peak values of the secondary transfer bias is a transfer peak value to provide a greater transfer-directional force to move toner from the intermediate transferor toward the recording medium in the secondary transfer nip. An absolute value of the transfer peak value is greater than an absolute value of the primary transfer bias.