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. 30, 2008
Filed:
Feb. 22, 2005
Takahiro Honda, Numazu, JP;
Masami Tomita, Numazu, JP;
Toshiki Nanya, Mishima, JP;
Fumihiro Sasaki, Fuji, JP;
Shigeru Emoto, Numazu, JP;
Hiroto Higuchi, Numazu, JP;
Hiroshi Yamada, Numazu, JP;
Shinichiro Yagi, Numazu, JP;
Tomomi Suzuki, Numazu, JP;
Junichi Awamura, Suntou-gun, JP;
Naohito Shimota, Numazu, JP;
Takahiro Honda, Numazu, JP;
Masami Tomita, Numazu, JP;
Toshiki Nanya, Mishima, JP;
Fumihiro Sasaki, Fuji, JP;
Shigeru Emoto, Numazu, JP;
Hiroto Higuchi, Numazu, JP;
Hiroshi Yamada, Numazu, JP;
Shinichiro Yagi, Numazu, JP;
Tomomi Suzuki, Numazu, JP;
Junichi Awamura, Suntou-gun, JP;
Naohito Shimota, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner is provided that contains a binder resin; a colorant; a release agent; and an external additive, wherein the toner has an average circularity of from 0.940 to 0.965 and a crater having a depth of from 0.02 to 0.1 μm, and wherein the crater has an amount of the external additive larger than an average amount thereof on the toner, along with a two-component developer containing the toner and an image forming apparatus using the toner.