Fuji Xerox Co., Ltd.

Fuji Xerox Corporation

Yasuhiro Arima

Takashi Imai

Masaki Nakamura

Atsushi Sugawara

Shuji Sato

Susumu Yoshino

Katsumi Daimon

Yosuke Tsurumi

Hirokazu Hamano

Hiroshi Nakazawa

Fusako Kiyono

Noriyuki Mizutani

Toshiyuki Yano

Takao Ishiyama

Yuka Ishihara

Norihito Fukushima

Shinpei Takagi

Takeshi Tanabe

Hiroko Kobayashi

Hirokazu Yamada

An electrostatic charge image developing toner includes: a polyester resin that has a glass transition temperature of about 45&#xb0; C. or higher and in which a proportion of repeating units derived from fumaric acid in repeating units derived from acid components is 10 mol % or greater and a proportion of repeating units derived from alkenylsuccinic acid in the repeating units derived from acid components is 10 mol % or greater; and a photopolymerization initiator, wherein a content of the photopolymerization initiator is from about 0.5% by weight to about 10% by weight.

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

The present invention provides a toner for developing an electrostatic charge image including toner particles having residual ammonium ions and silica particles containing a chlorine compound as an external additive.

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

A toner for electrostatic charge image development, the toner includes a binder resin, the binder resin includes an amorphous polyester resin having alkenyl groups and a crystalline polyester resin, about 5% or more of the alkenyl groups have a branched structure, and the o crystalline polyester resin has an ester concentration (M) obtained by the following Equation of from about 0.04 to about 0.08:&#x2003;&#x2003;Equation

Toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge and image forming device

An electrostatic charge developer includes a carrier having a core material and a resin coating layer covering the surface of the core material, and a toner having a binder resin that contains a non-crystalline polyester resin and a crystalline polyester resin. The resin coating layer contains a copolymer that contains a nitrogen-containing acrylic ester or nitrogen-containing methacrylic ester and an alicyclic acrylic ester or alicyclic methacrylic ester. The non-crystalline polyester resin contains at least an alkyl succinic acid or an anhydride or lower alkyl ester thereof, or an alkenyl succinic acid or an anhydride or lower alkyl ester thereof. The crystalline polyester resin is an aliphatic polyester resin.

Electrostatic charge developer, electrostatic charge image developer cartridge, process cartridge, and image forming apparatus

A toner for developing an electrostatic image, the toner having a core-shell structure, wherein the toner comprises: a colorant; a binder resin; and a filler, and wherein the toner has a flow tester &#xbd; effluent temperature of from 60 to 100&#xb0; C., and a shell of the toner comprises a thermoplastic resin.

Toner for developing electrostatic image, method for producing the same, developer for developing electrostatic image, and image forming method

An electrophotographic toner having a core-shell structure including a crystalline resin in its core region or a sea-island structure including a crystalline resin in its island region, wherein the toner has 1) a resistance of 5.0&#xd7;10&#x3a9;&#xb7;cm or higher, 2) a dynamic viscosity coefficient of 3&#xd7;10Pa&#xb7;s or higher at a temperature which is 50&#xb0; C. higher than a melting point of the crystalline resin, and 3) a dynamic viscosity coefficient of 1&#xd7;10Pa&#xb7;s or lower at a temperature which is 10&#xb0; C. higher than the melting point of the crystalline resin.

Electrophotographic toner, method for producing the same, electrophotographic developer, and image forming method

The toner for electrostatic charged image development of the present invention is characterized in that it contains at least a binder resin, a mold releasing agent and magnetic metal particles, and the solubility of the magnetic metal particles in a 1 mol/l aqueous HNOsolution at 50&#xb0; C. is 500 mg/g&#xb7;l or less.

Toner for electrostatic charged image development and process for preparing the same, as well as image forming method, image forming apparatus and toner cartridge

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Kanagawa, Japan

Yasuhiro Arima