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:
Feb. 17, 2015
Filed:
Mar. 11, 2013
Satoshi Kojima, Shizuoka, JP;
Tsuneyasu Nagatomo, Shizuoka, JP;
Syouko Satoh, Miyagi, JP;
Osamu Uchinokura, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Takahiro Honda, Shizuoka, JP;
Daisuke Ito, Kanagawa, JP;
Teruki Kusahara, Shizuoka, JP;
Masaki Watanabe, Shizuoka, JP;
Daisuke Inoue, Shizuoka, JP;
Kiwako Hirohara, Miyagi, JP;
Satoshi Kojima, Shizuoka, JP;
Tsuneyasu Nagatomo, Shizuoka, JP;
Syouko Satoh, Miyagi, JP;
Osamu Uchinokura, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Takahiro Honda, Shizuoka, JP;
Daisuke Ito, Kanagawa, JP;
Teruki Kusahara, Shizuoka, JP;
Masaki Watanabe, Shizuoka, JP;
Daisuke Inoue, Shizuoka, JP;
Kiwako Hirohara, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner for developing an electrostatic image, including: toner base particles each including a binder resin and a releasing agent; and inorganic fine particles, wherein the toner includes the inorganic fine particles as an external additive on a surface of the toner base particle, wherein the toner base particles have a BET specific surface area of 2.5 m/g to 5.0 m/g, and wherein the inorganic fine particles comprise inorganic fine particles (A) which are each a secondary particle where a plurality of primary particles are coalesced together.