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. 24, 2015
Filed:
Jan. 23, 2013
Yasunobu Shimizu, Kanagawa, JP;
Shinya Tanaka, Kanagawa, JP;
Hiromi Ogiyama, Tokyo, JP;
Hirokazu Ishii, Tokyo, JP;
Keigo Nakamura, Kanagawa, JP;
Yasunobu Shimizu, Kanagawa, JP;
Shinya Tanaka, Kanagawa, JP;
Hiromi Ogiyama, Tokyo, JP;
Hirokazu Ishii, Tokyo, JP;
Keigo Nakamura, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A transfer device includes a transfer bias power source, a switching device, and a sheet dependent condition setting device. The transfer bias power source applies to a transfer member, based on sheet dependent conditions for a recording medium onto which a toner image is transferred, one of a DC transfer bias and a superimposed transfer bias including an alternating current (AC) component superimposed on a DC component. The switching device switches a transfer mode between a DC transfer mode in which the DC transfer bias is applied to the transfer device and a superimposed-bias transfer mode in which the superimposed transfer bias is applied to the transfer device. The sheet dependent condition setting device sets arbitrarily at least one of the sheet dependent conditions for the recording medium at the superimposed-bias transfer mode. The sheet dependent conditions include a DC component value and an AC component value.