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:
Jul. 06, 2010
Filed:
Sep. 15, 2006
Atsushi Yamamoto, Kawanishi, JP;
Masahide Inoue, Katsuragi, JP;
Chiyoshi Nozaki, Otsu, JP;
Minoru Nakamura, Takarazuka, JP;
Masayuki Hagi, Minoo, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Tsuyoshi Nozaki, Ikedai, JP;
Hiroaki Kato, Nagaokakyo, JP;
Takuya Kadota, Kobe, JP;
Katsunori Kurose, Takarazuka, JP;
Hideaki Yasunaga, Ibaraki, JP;
Yoshimichi Ishikawa, Itami, JP;
Atsushi Yamamoto, Kawanishi, JP;
Masahide Inoue, Katsuragi, JP;
Chiyoshi Nozaki, Otsu, JP;
Minoru Nakamura, Takarazuka, JP;
Masayuki Hagi, Minoo, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Tsuyoshi Nozaki, Ikedai, JP;
Hiroaki Kato, Nagaokakyo, JP;
Takuya Kadota, Kobe, JP;
Katsunori Kurose, Takarazuka, JP;
Hideaki Yasunaga, Ibaraki, JP;
Yoshimichi Ishikawa, Itami, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
To provide a toner containing at least a toner base containing a binder resin and a colorant, and an inorganic fine particle, wherein the inorganic fine particle contains a compound oxide expressed by the following Composition Formula (1):[M1]SiO  Composition Formula (1)where 'M1' represents a metal element selected from Sr, Mg, Zn, Co, Mn and Ce, 'a' and “b” each represents an integer of 1 to 9 and “c” represents an integer of 3 to 9, wherein an average primary particle diameter of the compound oxide is 0.02 μm to 1.5 μm, and an average secondary particle diameter of the compound oxide is 0.08 μm to 3.5 μm, where the secondary particle is an aggregate of the primary particles.