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:
Apr. 25, 2017
Filed:
Dec. 02, 2015
Kenji Sugiura, Kanagawa, JP;
Toshitaka Yamaguchi, Kanagawa, JP;
Hiroyoshi Haga, Kanagawa, JP;
Hirokazu Ishii, Tokyo, JP;
Shinya Tanaka, Kanagawa, JP;
Takehide Mizutani, Tokyo, JP;
Yuuji Wada, Kanagawa, JP;
Tatsuya Ohsugi, Kanagawa, JP;
Naohiro Kumagai, Kanagawa, JP;
Seiichi Kogure, Kanagawa, JP;
Junpei Fujita, Kanagawa, JP;
Kazuki Yogosawa, Kanagawa, JP;
Kenji Sugiura, Kanagawa, JP;
Toshitaka Yamaguchi, Kanagawa, JP;
Hiroyoshi Haga, Kanagawa, JP;
Hirokazu Ishii, Tokyo, JP;
Shinya Tanaka, Kanagawa, JP;
Takehide Mizutani, Tokyo, JP;
Yuuji Wada, Kanagawa, JP;
Tatsuya Ohsugi, Kanagawa, JP;
Naohiro Kumagai, Kanagawa, JP;
Seiichi Kogure, Kanagawa, JP;
Junpei Fujita, 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, a nip forming device, a power source, a controller, and a temperature-and-humidity detector. The toner image forming device forms a toner image on the image bearer. The nip forming device contacts the image bearer to form a transfer nip. The power source outputs a transfer bias, in which an alternating current component is superimposed on a direct current component, to transfer the toner image onto a recording medium interposed in the transfer nip. The temperature-and-humidity detector detects a temperature and humidity. The controller controls the power source to output the transfer bias including the direct current component with a smaller absolute value as at least one of the detected temperature and humidity increases.