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.

Date of Patent:
Apr. 21, 2015

Filed:

Jun. 07, 2010
Applicants:

Hisashi Nakajima, Shizuoka, JP;

Shinya Nakayama, Shizuoka, JP;

Saori Yamada, Shizuoka, JP;

Hiroshi Yamashita, Shizuoka, JP;

Inventors:

Hisashi Nakajima, Shizuoka, JP;

Shinya Nakayama, Shizuoka, JP;

Saori Yamada, Shizuoka, JP;

Hiroshi Yamashita, Shizuoka, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 9/087 (2006.01); G03G 21/18 (2006.01); G03G 9/08 (2006.01);
U.S. Cl.
CPC ...
G03G 21/1814 (2013.01); G03G 9/0804 (2013.01); G03G 9/0819 (2013.01); G03G 9/0827 (2013.01); G03G 9/08748 (2013.01); G03G 9/08755 (2013.01); G03G 9/08791 (2013.01);
Abstract

An electrostatic image developing toner including a resin fine particle, and a toner material containing a polyester-based resin, wherein the electrostatic image developing toner is obtained by dissolving and/or dispersing the toner material containing the polyester-based resin in an organic solvent to prepare a toner material liquid, and dispersing the toner material liquid in an aqueous solvent containing the resin fine particle, and wherein the polyester-based resin contains a polyester resin obtained by polycondensation of an alcohol component with a carboxylic acid component containing a modified purified-rosin.


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