Toner binder, and toner

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United States of America Patent

PATENT NO 9921505
SERIAL NO

15309556

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Abstract

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The toner binder of the present invention contains a crystalline resin (A) and a resin (B) that is a polyester resin or its modified resin, the polyester resin being obtained by reaction of an alcohol component (X) and a carboxylic acid component (Y) as raw materials, wherein a temperature (Tp) of the top of an endothermic peak derived from the crystalline resin (A) as measured by a differential scanning calorimeter (DSC) is in the range of 40° C. to 100° C., and endothermic peak areas S1 and S2 during heating satisfy the following equation.

description='In-line Formulae' end='lead'(S2/S1)×100≧35  (1)description='In-line Formulae' end='tail'

S1 is an area of the endothermic peak derived from the crystalline resin (A) in the first heating process, and S2 is an area of the endothermic peak derived from the crystalline resin (A) in the second heating process, when the toner binder is heated, cooled, and heated.

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Patent Owner(s)

Patent OwnerAddress
SANYO CHEMICAL INDUSTRIES LTD11-1 IKKYO NOMOTOCHO HIGASHIYAMA-KU KYOTO-SHI KYOTO 605-0995

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwawaki, Eiji Kyoto, JP 3 2
Kato, Tomohisa Kyoto, JP 46 190
Odajima, Hiroshi Kyoto, JP 7 2
Sanpei, Mana Kyoto, JP 2 1
Sugimoto, Yuko Kyoto, JP 9 6
Utsui, Satoshi Kyoto, JP 3 5

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