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:
Oct. 26, 1999

Filed:

Aug. 06, 1998
Applicant:
Inventors:

Hidekazu Yaguchi, Minami-Ashigara, JP;

Michio Take, Minami-Ashigara, JP;

Masaki Hashimoto, Minami-Ashigara, JP;

Hiroshi Nakazawa, Minami-Ashigara, JP;

Jun Igarashi, Minami-Ashigara, JP;

Masanori Ichimura, Minami-Ashigara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ; G03G / ;
U.S. Cl.
CPC ...
430 45 ; 430106 ; 430110 ; 430111 ;
Abstract

There is provided an electrostatic charge image developing toner comprising at least a binder resin, a coloring agent, and an aromatic hydrocarbon copolymer resin, wherein, in a toner particle, the percentage of dispersed aromatic hydrocarbon copolymer resin particles having a longitudinal diameter of 2.0 .mu.m or greater among the total number of dispersed aromatic hydrocarbon copolymer is 10% or less. The toner has superior effects of excellent grindability and not melting and adhering to apparatuses, without there being any adverse effect on basic abilities of the toner such as electrostatic charge property, fixing property, color, and the like.


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