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:
Dec. 09, 1997
Filed:
Jul. 02, 1996
Takuro Kamiya, Tokyo, JP;
Shinichi Namekata, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An apparatus having a photosensitive body and intermediate transfer body for successively transferring color toner images formed on the photosensitive body onto the intermediate transfer body to form an overlay transfer image which is transferred in batch onto transfer paper. Passage of a mark in a portion of the intermediate transfer body is detected by a mark detector in a passage area for the mark. A primary transfer device is provided in a primary transfer section of the appartus so as to contact the photosensitive body. An electrifying device is provided at a position of upstream in a rotating direction of the photosensitive body from the primary transfer device. A control device provides control such that in a standby state prior to starting the image forming, the distance from the mark detector to the downstream mark, viewed with respect to the direction of rotation of the intermediate transfer body, is always longer than a corresponding distance of the photosensitive body from a downstream position of the electrifying device with respect to the direction of rotation of the photosensitive body to the primary transfer section.