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. 02, 2011
Filed:
Dec. 08, 2006
Yasuhisa Ehara, Kamakura, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Joh Ebara, Kamakura, JP;
Noriaki Funamoto, Machida, JP;
Seichi Handa, Tokyo, JP;
Yuji Matsuda, Inagi, JP;
Yasuhisa Ehara, Kamakura, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Joh Ebara, Kamakura, JP;
Noriaki Funamoto, Machida, JP;
Seichi Handa, Tokyo, JP;
Yuji Matsuda, Inagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus is disclosed. In at least one embodiment, the apparatus includes a plurality of image carriers to carry an image; a plurality of drivers to drive the image carriers; a plurality of drive-force transmitting members to transmit a driving-force from the drivers to image carriers; a developing unit, provided to the image carriers, to develop the image; a transfer member, facing the image carriers, to receive the image from the image carriers sequentially; an image detector to detect the image on the transfer member to check a detection timing of the image; a sensor, provided to each of the image carriers, to detect a rotational speed of image carriers; and a controller to conduct an image-to-image displacement control, a speed-deviation checking, and a phase adjustment control for each of the plurality of image carriers with the image detector and sensor.