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:
Jan. 06, 2009
Filed:
Mar. 05, 2004
Hiroto Higuchi, Numazu, JP;
Fumihiro Sasaki, Fuji, JP;
Shinichiro Yagi, Numazu, JP;
Shigeru Emoto, Numazu, JP;
Junichi Awamura, Suntou-gun, JP;
Naohito Shimota, Suntou-gun, JP;
Masami Tomita, Numazu, JP;
Toshiki Nanya, Mishima, JP;
Takahiro Honda, Suntou-gun, JP;
Maiko Kondo, Numazu, JP;
Hiroto Higuchi, Numazu, JP;
Fumihiro Sasaki, Fuji, JP;
Shinichiro Yagi, Numazu, JP;
Shigeru Emoto, Numazu, JP;
Junichi Awamura, Suntou-gun, JP;
Naohito Shimota, Suntou-gun, JP;
Masami Tomita, Numazu, JP;
Toshiki Nanya, Mishima, JP;
Takahiro Honda, Suntou-gun, JP;
Maiko Kondo, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner composition including toner particles including at least a binder resin; and a colorant, wherein the toner composition satisfies at least one of the following relationships (1) and (2):B≦14 when 155<A≦180; and≦0.6−79 when 145≦≦155,  (1)wherein A represents a shape factor SF-1 of the toner composition and B represents a content of toner particles having a particle diameter not greater than 3 μm; andB≦14 when 0.920≦'≦0.950; and≦394−400′ when 0.950<A′≦0.965  (2)wherein A′ represents an average circularity of the toner composition and B represents a content of toner particles having a particle diameter not greater than 3 μm.