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:
Mar. 29, 2011
Filed:
Oct. 16, 2008
Masashi Hirai, Katano, JP;
Mikio Kakui, Ikoma-gun, JP;
Yoshiaki Masuda, Nara, JP;
Susumu Murakami, Kizugawa, JP;
Kuniaki Nakano, Kizugawa, JP;
Kazuaki Ishikawa, Hamburg, DE;
Tomomi Tanaka, Ikoma, JP;
Masashi Hirai, Katano, JP;
Mikio Kakui, Ikoma-gun, JP;
Yoshiaki Masuda, Nara, JP;
Susumu Murakami, Kizugawa, JP;
Kuniaki Nakano, Kizugawa, JP;
Kazuaki Ishikawa, Hamburg, DE;
Tomomi Tanaka, Ikoma, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An image forming apparatus includes a transfer belt unit which has an intermediate transfer belt for supporting toner images and primary transfer rollers for pressing the intermediate transfer belt against corresponding photoreceptor drums and moves the intermediate transfer belt along the surface of each photoreceptor drum to transfer the toner images to the intermediate transfer belt. The intermediate transfer belt is formed so as to be 30 μm to 50 μm in average thickness, each primary transfer roller is arranged at a position, along the moving direction of the intermediate transfer belt, which is deviated downstream with respect to the moving direction from the position where the intermediate transfer belt is in contact with the photoreceptor and which is projected toward the photoreceptor drum side so as to press the intermediate transfer belt against photoreceptor with a nip pressure ranging from 10 gf/cmto 40 gf/cm.