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. 27, 2013
Filed:
Dec. 07, 2010
Keisuke Sugiyama, Tokyo, JP;
Kouji Amanai, Kanagawa, JP;
Joh Ebara, Kanagawa, JP;
Toshiyuki Uchida, Kanagawa, JP;
Yohei Miura, Tokyo, JP;
Narumi Sugita, Kanagawa, JP;
Keisuke Sugiyama, Tokyo, JP;
Kouji Amanai, Kanagawa, JP;
Joh Ebara, Kanagawa, JP;
Toshiyuki Uchida, Kanagawa, JP;
Yohei Miura, Tokyo, JP;
Narumi Sugita, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An image forming apparatus includes a recording medium transport belt which is suspended by a plurality of roller members. An image is secondarily transferred from a first image carrier through an intermediate transfer body to a recording medium. An image is directly transferred from a second image carrier to the recording medium. The image forming apparatus further includes a pattern image sensing unit which senses a pattern image transferred from the first image carrier and the second image carrier finally to the recording medium transport belt. Each of a distance from a secondary transfer position to a sensing position and a distance from a direct transfer position to the sensing position in a recording medium transport belt rotation direction is a natural number times a circumferential length of a roller member causing a speed change in the recording medium transport belt among the plurality of roller members.