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. 23, 2008
Filed:
Feb. 27, 2006
Yoshie Iwakura, Osaka, JP;
Akihiro Kawasaki, Hyogo, JP;
Atsushi Takehara, Kyoto, JP;
Takafumi Miyazaki, Osaka, JP;
Tomoya Adachi, Osaka, JP;
Yoshie Iwakura, Osaka, JP;
Akihiro Kawasaki, Hyogo, JP;
Atsushi Takehara, Kyoto, JP;
Takafumi Miyazaki, Osaka, JP;
Tomoya Adachi, Osaka, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A primary transfer unit includes transfer units for performing a toner transfer from image carriers onto a transfer belt. Each of the transfer units is formed with a metallic roller. The metallic roller is arranged so as to satisfy θ1<θ2, where an angle of the endless belt with respect to a tangent to the image carrier, on a side upstream of rotation of the endless belt to a transfer nip region where the image carrier and the endless belt are in contact is θ1, and an angle of the endless belt with respect to the tangent, on a side downstream of rotation of the endless belt to the transfer nip region is θ2.