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:
May. 22, 2012

Filed:

Mar. 13, 2009
Applicants:

Yasuo Matsumura, Kanagawa, JP;

Hirotaka Matsuoka, Kanagawa, JP;

Hideo Maehata, Kanagawa, JP;

Takashi Imai, Kanagawa, JP;

Inventors:

Yasuo Matsumura, Kanagawa, JP;

Hirotaka Matsuoka, Kanagawa, JP;

Hideo Maehata, Kanagawa, JP;

Takashi Imai, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An electrostatic-image-developing toner is obtained by aggregating: resin particles, each of which has a core-shell structure, in which a difference in glass transition temperature between a resin constituting the core and a resin constituting the shell is about 20° C. or more; and releasing agent particles, each of which includes a polyester block copolymer having a weight-average molecular weight of about 3,000 or less and containing a non-crystalline polyester block containing a cyclic structure in the main chain and a crystalline polyester block containing no cyclic structure in the main chain.


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