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:
Oct. 21, 2014
Filed:
Mar. 08, 2013
Masahide Yamada, Shizuoka, JP;
Shinya Nakayama, Shizuoka, JP;
Atsushi Yamamoto, Shizuoka, JP;
Hideyuki Santo, Shizuoka, JP;
Shingo Sakashita, Shizuoka, JP;
Yukiko Nakajima, Kanagawa, JP;
Suzuka Amemori, Shizuoka, JP;
Akiyoshi Sabu, Shizuoka, JP;
Masahide Yamada, Shizuoka, JP;
Shinya Nakayama, Shizuoka, JP;
Atsushi Yamamoto, Shizuoka, JP;
Hideyuki Santo, Shizuoka, JP;
Shingo Sakashita, Shizuoka, JP;
Yukiko Nakajima, Kanagawa, JP;
Suzuka Amemori, Shizuoka, JP;
Akiyoshi Sabu, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrophotographic toner, including: a binder resin; a colorant; and an organically-modified layered inorganic mineral, wherein the binder resin contains 50% by mass or more of a crystalline resin relative to the binder resin, and the crystalline resin contains a resin having a sulfonic acid group, and wherein an amount of the sulfonic acid group is 0.1% by mass to 2.0% by mass relative to the resin having the sulfonic acid group.