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:
Sep. 08, 2009
Filed:
Sep. 14, 2007
Kazuoki Fuwa, Toyonaka, JP;
Masayuki Hagi, Minoo, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Hiroaki Kato, Nagaokakyo, JP;
Yoshitaka Sekiguchi, Nishinomiya, JP;
Yoshie Iwakura, Higashiosaka, JP;
Kazuoki Fuwa, Toyonaka, JP;
Masayuki Hagi, Minoo, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Hiroaki Kato, Nagaokakyo, JP;
Yoshitaka Sekiguchi, Nishinomiya, JP;
Yoshie Iwakura, Higashiosaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Provided is an image forming method that comprises a charging step, an exposing step, a developing step, an intermediate transfer step and a secondary transfer step, wherein the diameter R (mm) of a secondary transfer roller used in the secondary transfer step and the distance A (mm) between a nip center of the secondary transfer roller and a site where paper contacts with a secondary transfer belt at ingress side satisfy the following relation, and the charge amount Q (μC/g) of the toner going into the secondary transfer step satisfies the following relation./40</1515/<35/.