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:
Apr. 18, 2006
Filed:
Jun. 21, 2004
Fumihiro Sasaki, Shizuoka, JP;
Mitsuo Aoki, Shizuoka, JP;
Yasuaki Iwamoto, Shizuoka, JP;
Naohito Shimota, Shizuoka, JP;
Kazuyuki Yazaki, Shizuoka, JP;
Hiroaki Matsuda, Shizuoka, JP;
Hiroshi Nakai, Kanagawa, JP;
Kumi Hasegawa, Shizuoka, JP;
Shinichiro Yagi, Shizuoka, JP;
Hiroto Higuchi, Shizuoka, JP;
Akemi Sugiyama, Shizuoka, JP;
Fumihiro Sasaki, Shizuoka, JP;
Mitsuo Aoki, Shizuoka, JP;
Yasuaki Iwamoto, Shizuoka, JP;
Naohito Shimota, Shizuoka, JP;
Kazuyuki Yazaki, Shizuoka, JP;
Hiroaki Matsuda, Shizuoka, JP;
Hiroshi Nakai, Kanagawa, JP;
Kumi Hasegawa, Shizuoka, JP;
Shinichiro Yagi, Shizuoka, JP;
Hiroto Higuchi, Shizuoka, JP;
Akemi Sugiyama, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image formation method includes the steps of charging the surface of an electrophotographic photoconductor, exposing the charged photoconductor to a light image to form a latent electrostatic image on the photoconductor, developing the latent electrostatic image using a two-component developer containing a toner and a carrier to obtain a toner image, and transferring the toner image to an image receiving material directly or via an intermediate transfer member, with the photoconductor showing a surface friction coefficient of 0.40 or less, and the toner having toner particles with an average circularity of 0.930 or more.