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:
Jun. 12, 2012
Filed:
Aug. 03, 2009
Hiroyuki Iwasaki, Kanagawa, JP;
Hiroyuki Iwasaki, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A tandem-type image forming apparatus in which a photoreceptor for black is controlled to be contacted to an intermediate transfer member and the photoreceptors for colors are controlled to be separated from the intermediate transfer member in a case of forming a black and white image, is disclosed, including a current control part which controls so that in the case of forming the black and white image, when the intermediate transfer member is driven, a value of a current flowing to the motor is equal to the value of the current in the case of forming the color image. The current control part controls the value of the current by controlling a rotational velocity of the photoreceptor for black.