Fuji Xerox Co., Ltd.

Emi Miyata

Yuki Sasaki

Sumiaki Yamasaki

Hirotaka Matsuoka

Satoshi Hiraoka

Susumu Yoshino

Hirofumi Shiozaki

Satoshi Yoshida

Tetsuya Taguchi

Shinya Sakamoto

Shinya Nakashima

Kosaku Yoshimura

An electrostatic charge image developing toner includes a binder resin and a release agent, and when a peak temperature during a first temperature increase and a peak temperature during a second temperature increase, that are obtained by differential scanning calorimetry including performing the first temperature increase at 10&#xb0; C./min after holding at 10&#xb0; C., performing cooling at &#x2212;10&#xb0; C./min, performing a heat treatment for 24 hours at 50&#xb0; C., and performing the second temperature increase at 10&#xb0; C./min, are represented by Tt1 and Tt2, respectively, the following Expression (1) is satisfied:1&#x3c;2.&#x2003;&#x2003;Expression (1):

Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge

An electrostatic-image developing toner contains a polyester resin prepared by addition reaction of a polycondensate of a carboxylic acid component and an alcohol component with an isocyanate-containing compound. The polycondensate has an active hydrogen group. The alcohol component includes a rosin diol represented by general formula (1): (wherein Rand Rare each independently hydrogen or methyl; L, L, and Lare each independently a divalent linking group selected from the group consisting of carbonyl, carboxyl, ether, sulfonyl, optionally substituted linear alkylenes, optionally substituted cyclic alkylenes, optionally substituted arylenes, and combinations thereof; Land Lor Land Lare optionally taken together to form a ring; and Aand Aare rosin ester groups).

Electrostatic-image developing toner, electrostatic image developer, toner cartridge, process cartridge, image-forming apparatus, and method for forming image

An electrostatic image developing toner of the exemplary embodiment of the invention contains an amorphous first polyester resin of a polycondenzation product of at least a carboxylic acid component and an alcohol component containing rosin, and a second polyester resin having the difference (absolute value) in parameter of solubility relative to the first polyester resin of from about 0.3 (cal/cm)to about 3 (cal/cm).

Electrostatic image developing toner and manufacturing method of the same, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

A polyester resin for a toner is a polycondensate of a carboxylic acid component and an alcohol component including rosin diol that is represented by the following formula (1) and has an alicyclic structure (alicyclic alcohol), wherein Rand Reach independently represents hydrogen or a methyl group, Lrepresents a divalent linking group having an alicyclic structure, Land Leach independently represents a divalent linking group selected from a group consisting of a carbonyl group, a carboxyl group, an ether group, a sulfonyl group, a chain-like alkylene group which may have a substituent, a cyclic alkylene group, a phenylene group, and combinations thereof, and Aand Arepresent a rosin ester group, provided that a divalent linking group having the alicyclic structure represented by Lmay be a divalent linking group having an alicyclic structure formed through linking with any of R, R, Lor L.

Polyester resin for toner, electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

A polyurethane resin which is an addition polymer, includes an isocyanate compound containing at least a compound having two or more isocyanate groups; and an alcohol compound containing rosin diol represented by Formula (1): wherein in Formula (1), Rand Rrepresent a hydrogen atom or a methyl group, L, L, and Leach independently represent a carbonyl group, an ester group, an ether group, a sulfonyl group, a chain alkylene group which may have a substituent, a cyclic alkylene group which may have a substituent, an arylene group which may have a substituent, and a divalent linking group selected from a group consisting of combinations of the above-described groups, wherein Land Lor Land Lmay form a ring together, and Aand Arepresent a rosin ester group.

Polyurethane resin, toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

There is provided a polyester resin for a toner, including: a polycondensate of a polyvalent carboxylic acid component and a polyhydric alcoholic component, wherein the polyhydric alcoholic component contains a rosin diol represented by the following Formula (1) and a content of the rosin diol is 80 mole % to 100 mole % based on the total polyhydric alcoholic component.  

Polyester resin for toner, electrostatic-image-developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

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Kanagawa, Japan

Emi Miyata