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:
Aug. 26, 2014
Filed:
Feb. 27, 2012
Yasuhiko Ogino, Kanagawa, JP;
Haruo Iimura, Kanagawa, JP;
Shinji Aoki, Kanagawa, JP;
Keigo Nakamura, Kanagawa, JP;
Masahide Nakaya, Kanagawa, JP;
Tomokazu Takeuchi, Tokyo, JP;
Shinya Tanaka, Kanagawa, JP;
Yasuhiko Ogino, Kanagawa, JP;
Haruo Iimura, Kanagawa, JP;
Shinji Aoki, Kanagawa, JP;
Keigo Nakamura, Kanagawa, JP;
Masahide Nakaya, Kanagawa, JP;
Tomokazu Takeuchi, Tokyo, JP;
Shinya Tanaka, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
Described herein is a transfer device that transfers a visualized image formed on an image carrier onto a recording medium. The transfer device includes an image carrier that carries a toner image, a contacting member that contacts the image carrier via a recording medium and a power source that outputs a transfer bias to transfer the toner image from the image carrier onto the recording medium at a transfer nip formed between the image carrier and the contacting member. The transfer bias has a direct current component and an alternating current (AC) component superimposed on the direct current component. The transfer device also includes a controller that controls the power source such that the controller controls a level of the direct current component output from the power source by a constant current control.