Toner for electrostatic image development

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United States of America Patent

PATENT NO 9256146
APP PUB NO 20140287354A1
SERIAL NO

14215721

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Abstract

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Provided is a toner for electrostatic image development, having low-temperature fixability and long-term stable charge property and also having heat-resistant storage stability. The toner for electrostatic image development includes toner particles containing a binder resin. The binder resin has a domain-matrix structure in which a crystalline polyester resin is dispersed as a domain phase in a matrix phase formed of an amorphous vinyl polymer formed using at least a vinyl-based monomer. The amorphous vinyl polymer has a carboxy group concentration of not less than 0.2 mmol/g and not more than 1.0 mmol/g, and the crystalline polyester resin has an ester group concentration of not less than 0.1 mmol/g and not more than 7.1 mmol/g.

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Patent Owner(s)

Patent OwnerAddress
KONICA MINOLTA INC2-7-2 MARUNOUCHI CHIYODA-KU TOKYO 1007015 ?1007015

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amemiya, Taiki Tokyo, JP 16 37
Kawamura, Takaki Tokyo, JP 27 66
Matsuoka, Masahiro Tokyo, JP 26 413
Matsushima, Kaori Tokyo, JP 28 44
Nagasawa, Hiroshi Tokyo, JP 86 1254
Shirai, Aya Tokyo, JP 50 356

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