Fuji Xerox Co., Ltd.

Eisuke Iwazaki

Satoshi Yoshida

Noriyuki Mizutani

Satoshi Inoue

Tomoaki Tanaka

Asafumi Fujita

Kotaro Yoshihara

Narumasa Sato

Shuji Sato

Hiroshi Nakazawa

Tsuyoshi Murakami

Shinya Sakamoto

Yuki Takamiya

Masanobu Ninomiya

Atsushi Sugawara

Shintaro Anno

Hirokazu Hamano

Tomohito Nakajima

Masakazu Iijima

Takao Ishiyama

Takeshi Shoji

Masaki Nakamura

Kiyohiro Yamanaka

Erina Saito

An electrostatic charge image developing toner includes toner particles containing crosslinked resin particles having a glass transition temperature of 55&#xb0; C. or higher in a surface layer of the toner particle, and silica particles having a volume average particle diameter of 30 nm to 300 nm and a coverage with respect to the toner particle from 50% to 100%.

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

An electrostatic charge image developing toner includes a toner particle including a binder resin containing a polyester resin, a release agent containing hydrocarbon wax, and a styrene (meth)acrylic resin, wherein 70% or more of the release agent of the entire release agent is present in a portion within 800 nm from the surface of the toner particle, and wherein the styrene (meth)acrylic resin forms a domain having an average diameter of smaller than 0.3 &#x3bc;m in the toner particle.

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

An electrostatic charge image developing toner, includes toner particles containing a binder resin including a polyester resin, a release agent including a hydrocarbon wax, and a styrene (meth)acrylic resin, wherein 70% or more of the release agent is present within 800 nm from a surface of the toner particles, the styrene (meth)acrylic resin in the toner particles forms a domain having an average diameter from 0.3 &#x3bc;m to 0.8 &#x3bc;m, and a number ratio of the domain being in a range of &#xb1;0.1 &#x3bc;m of the average diameter is 65% or more.

An electrostatic charge image developing toner includes toner particles containing a binder resin including a polyester resin, a release agent including a hydrocarbon wax, and a styrene (meth)acrylic resin, wherein 70% or more of the release agent with respect to the entire release agent is present within 800 nm from the surface of the toner particles, wherein the styrene (meth)acrylic resin forms domains having an average diameter of 0.3 &#x3bc;m to 0.8 &#x3bc;m in the toner particles, and wherein a number ratio of the domains included in a range of the average diameter&#xb1;0.1 &#x3bc;m is less than 65%.

A toner for electrostatic latent image development is disclosed. The toner for electrostatic latent image development includes toner particles, the toner particles includes a binder resin and a release agent, and the toner has a linear thermal expansion coefficient in accordance with JIS K 7197-1991 of from about 6&#xd7;10/C.&#xb0; to about 1&#xd7;10/C.&#xb0;. An electrostatic latent image developer, a toner cartridge, a process cartridge, and an image forming apparatus are also disclosed.

Toner for electrostatic latent image development, electrostatic latent image developer, toner cartridge, process cartridge, and image forming apparatus

An electrostatic charge image developing toner has toner particles that contain a binder resin containing a polyester resin, a release agent containing hydrocarbon-based wax, styrene(meth)acrylic resin particles, and an aluminum element, wherein fluorescent X-ray NET intensity of the aluminum element existing in the toner particles is from 0.1 to 0.3, and 70% or more of the release agent among the entire release agent exists within 800 nm from the surface of the toner particles.

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

An electrostatic charge image developing toner includes toner particles containing an amorphous polyester resin (a1), a crystalline polyester resin (a2), and a styrene-acrylic resin (b) containing 2-carboxyethyl acrylate as a polymerization component.

An electrostatic charge image developing toner includes a binder resin, toner particles containing an acylglycerol, and an external additive, wherein at least one of hydroxyl groups in the acylglycerol is esterified with an alkyl monocarboxylic acid that contains a substituted or unsubstituted alkyl group having from 12 to 22 carbon atoms, and a content of a portion esterified with the alkyl monocarboxylic acid that contains the alkyl group having the same carbon number is 95 % by weight or greater with respect to the total weight of the acylglycerol.

An electrostatic charge image developing toner includes a binder resin that contains an amorphous polyester resin and a colorant. The toner satisfies the following expressions: 20 &#x3bc;S/cm&#x2266;&#x3c1;&#x2266;150 &#x3bc;S/cm, and 0.01%&#x3c;Cm/(Cc+Co)&#xd7;100&#x3c;0.1%, where &#x3c1; represents the conductivity of a supernatant solution when 0.1 g of the toner is dissolved in 30 ml of tetrahydrofuran, Cm represents the content (% by mass) of metal elements Al, Mg, and Fe, Cc represents the content (% by mass) of carbon, and Co represents the content (% by mass) of oxygen.

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

A transparent electrostatic charge image developing toner contains a binder resin, europium, and bismuth.

Transparent electrostatic charge image developing toner and method of manufacturing the same, electrostatic charge image developer, toner cartridge, image forming method, and image forming apparatus

An electrostatic latent image developing toner contains a binder resin, a colorant, europium, and bismuth.

Electrostatic latent image developing toner, electrostatic latent image developing toner manufacturing method, toner cartridge, image forming method, and image forming apparatus

An electrostatic charge image developing toner contains a binder resin, a release agent, a black colorant, a methylglycine diacetate, and an aluminum element, the content of the methylglycine diacetate is in the range of from 5 ppm to 500 ppm, and the content of the aluminum element is in the range of from 0.07 atomic % to 0.18 atomic % in total element analysis using fluorescent X-rays.

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

Provided is a magenta toner containing toner particles that contain a colorant and a binder resin, wherein the colorant contains C.I. Pigment Red 57:1 and C.I. Pigment Yellow 180, a mass ratio between the C.I. Pigment Red 57:1 and the C.I. Pigment Yellow 180 being 99:1 to 10000:1, and wherein the binder resin contains a polyester resin that has a repeating unit derived from bisphenol A ethylene oxide represented by formula (1): wherein each of m and n independently represents an integer of 2 to 4.

Magenta toner, developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

A magenta toner including toner particles containing a colorant and a binder resin is provided. The colorant contains C.I. Pigment Red 122 and C.I. Pigment Yellow 180 and a mass ratio of the C.I. Pigment Red 122 and the C.I. Pigment Yellow 180 is in the range of 99:1 to 10000:1. The binder resin contains a polyester resin and a polyester resin having a repeating unit obtained from a Bisphenol A alkylene oxide adduct expressed by the following chemical formula is used as the polyester resin: wherein m and n independently represent an integer of 2 to 4, and x and y independently represent a positive number.

The invention provides a yellow toner including toner particles comprising colorants and a binder resin, the colorants including at least a C. I. Pigment yellow 180 and a carmine-based pigment, a weight ratio of the C. I. Pigment yellow 180 to the carmine-based pigment being from about 99:1 to about 10,000:1, the binder resin being a polyester resin comprising a first repeating unit derived from a first diol compound, and the first diol compound being a bisphenol A ethylene oxide represented by the following formula (1): 

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Kanagawa, Japan

Eisuke Iwazaki