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. 09, 2010
Filed:
Apr. 08, 2008
Rumi Konishi, Osaka, JP;
Kenji Asuwa, Tokyo, JP;
Yoshiko Ogawa, Osaka, JP;
Shuuichi Nakagawa, Osaka, JP;
Ryuji Inoue, Hyogo, JP;
Shin Murayama, Hyogo, JP;
Kazushige Oonishi, Tokyo, JP;
Shintaro Yamada, Tokyo, JP;
Rumi Konishi, Osaka, JP;
Kenji Asuwa, Tokyo, JP;
Yoshiko Ogawa, Osaka, JP;
Shuuichi Nakagawa, Osaka, JP;
Ryuji Inoue, Hyogo, JP;
Shin Murayama, Hyogo, JP;
Kazushige Oonishi, Tokyo, JP;
Shintaro Yamada, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A disclosed developing device includes a developing roller; a supply roller that is in contact with the developing roller and configured to supply toner to the developing roller; a current measuring unit configured to measure an electric current that flows from the developing roller to the supply roller when the toner is supplied from the supply roller to the developing roller; and an error determining unit configured to detect a development error of the developing roller based on the electric current measured by the current measuring unit.