Fujifilm Business Innovation Corp.

Fuji Xerox Co., Ltd.

Sony Corporation

Nissan Motor Company Limited

Tianma Japan, Ltd.

Satoshi Miura

Atsushi Sugawara

Shintaro Anno

Daisuke Noguchi

Yoshimasa Fujihara

Yasuo Kadokura

Akira Matsumoto

Yukiaki Nakamura

Shinya Nakashima

Sakiko Hirai

Daisuke Tomita

Satoshi Kamiwaki

Takuro Watanabe

Kazutsuna Sasaki

Takatomo Nagamine

Jumpei Iwasaki

Ken Sumiyoshi

Yutaka Saito

Koji Shigemura

Koji Sasaki

Sakon Takahashi

Masaru Takahashi

Tsuyoshi Murakami

Yasuaki Hashimoto

Shinji Takahashi

Kana Yoshida

Shotaro Takahashi

Takahiko Tamura

Nobuya Seko

Yuichi Fukuyama

Tsutomu Furuta

Jun Ueshima

Yumiko Mito

Haruki Yamane

Koki Takahashi

Kiyoshi Yamakawa

Shingo Takahashi

Tomohiko Usui

Hiroyuki Togashi

Kazuhisa Tadakuma

An electrostatic image developing toner includes a toner particle including a binder resin and a release agent. When a cross section of the toner particle is observed, the toner particle satisfies a condition (A1) below: Condition (A1): the toner particle includes one or more domains of the release agent, the one or more domains having a diameter equal to 8% or more and 30% or less of the maximum diameter of the toner particle, the one or more domains having a geometric center at a depth of R/2 or less below the surface of the toner particle, where R represents the distance between the geometric center of the toner particle and the surface of the toner particle, the one or more domains being entirely included in an inside portion of the toner particle which extends below a depth of 50 nm from the surface of the toner particle.

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

An electrostatic image developing toner includes a toner particle including an amorphous resin, a crystalline resin, and a release agent. When a cross section of the toner particle is observed, the toner particle satisfies conditions (A1) and (B1) below: Condition (A1): one or more domains of the crystalline resin, the domains having a diameter equal to 10% or more and 40% or less of the maximum diameter of the toner particle, are present in the toner particle, and Condition (B1): one or more domains of the release agent, the domains having a diameter equal to 10% or more and 40% or less of the maximum diameter of the toner particle, are present in the toner particle.

An electrostatic image developing toner includes a toner particle including a binder resin and a colorant. The net intensity Nof sulfur included in the toner particle and the total net intensity Nof an alkali metal and an alkaline-earth metal included in the toner particle, which are measured by X-ray fluorescence analysis, satisfy 1.0<N/N<22.0.

Electrostatic image developing toner and electrostatic image developer

An electrostatic charge image developing toner includes a toner particle that contains a binder resin having an acid value of 5 mgKOH/g or more and 25 mgKOH/g or less, and a pigment having an isoindoline skeleton, in which a total Net intensity Nof an alkali metal and an alkaline earth metal, which is measured by fluorescent X-ray analysis, in the toner particle is 1.50 kcps or more and 4.00 kcps or less.

Electrostatic charge image developing toner and electrostatic charge image developer

An electrostatic charge image developing toner includes: a toner particle containing a binder resin; and an external additive including a silica particle having a circularity of more than 0.5 and 0.9 or less and a volume average particle diameter of more than 100 nm and 300 nm or less, in which a total Net intensity Nof an alkali metal element and an alkaline earth metal element in the toner particle measured by fluorescence X-ray analysis is 0.10 kcps or more and 1.20 kcps or less.

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 containing a binder resin; and an external additive containing alumina particles having a volume average particle diameter of more than 5 nm and 80 nm or less and silica particles having a volume average particle diameter of 10 nm or more and 90 nm or less, and in the toner particle, a Net intensity Nof a total of an alkali metal element and an alkaline earth metal element, measured by fluorescence X-ray analysis, is 0.10 kcps or more and 1.30 kcps or less, and a ratio (Ws/Wa) of a content Ws of the silica particles to a content Wa of the alumina particles is more than 0.5 and less than 35.

An electrostatic image developing toner includes an amorphous polyester resin and a crystalline polyester resin, wherein a Net intensity Nof a Na element and a Net intensity Nof a Cl element, the Net intensities Nand Nbeing determined by X-ray fluorescence analysis, satisfy 2.5&#x2264;N/N&#x2264;260.0.

A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that in an x-ray fluorescence analysis of the toner, the net intensity of the peak for the Mg element is 0.10 kcps or more and 1.20 kcps or less; and at least one external additive including particles of at least one compound represented by formula (1),MTiO&#x2003;&#x2003;(1)where M represents at least one selected from the group consisting of Ca, Sr, and Ba.

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

An electrostatic charge image developing carrier includes: magnetic particles; and a resin layer coating the magnetic particles and containing inorganic particles, in which an average particle diameter of the inorganic particles is 5 nm or more and 90 nm or less, an average thickness of the resin layer is 0.6 &#x3bc;m or more and 1.4 &#x3bc;m or less, and a ratio B/A of a surface area B of the electrostatic charge image developing carrier to a plan view area A of the electrostatic charge image developing carrier is 1.020 or more and 1.100 or less when a surface of the electrostatic charge image developing carrier is three-dimensionally analyzed.

Electrostatic charge image developing carrier, electrostatic charge image developer, and image forming apparatus

An electrostatic image developing toner includes an amorphous polyester resin, a crystalline polyester resin, and C.I. Pigment Red 57:1, wherein a Net intensity Nof an Mg element, the Net intensity Nof being determined by X-ray fluorescence analysis, is 0.10 kcps or more and 0.40 kcps or less.

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

A toner for electrostatic image development contains toner particles containing a binder resin. The binder resin includes an amorphous resin and a crystalline resin. In the toner particles, a Net intensity of elemental Mg measured by X-ray fluorescence analysis is from 0.40 to 1.20 inclusive, and a Net intensity of elemental Cl measured by X-ray fluorescence analysis is from 0.02 to 0.60 inclusive.

Toner for electrostatic image development, electrostatic image developer, and toner cartridge

A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that the net intensity of x-ray fluorescence from the Mg element in the toner is 0.10 kcps or more and 1.20 kcps or less; and external additives including particles of at least one compound represented by formula (1) and particles of a metal salt of a fatty acid,MTiO&#x2003;&#x2003;(1)where M represents at least one selected from the group consisting of Ca, Sr, and Ba.

A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that the net intensity of x-ray fluorescence from the Mg element in the toner is 0.10 kcps or more and 1.20 kcps or less; and at least one external additive including particles of a metal salt of a fatty acid.

An optical detection type chemical sensor includes a light source, a detection element and a photodetector. The detection element is constituted of a laminate in which a multilayer film including a chemical detection layer, an optical interference layer, and a half mirror layer is formed on a transparent substrate. At least one of the layers includes a magnetic material. Light from the light source is applied to the detection element under the condition that the light enters inside of the detection element from the rear surface of the transparent substrate on which the laminate is not formed and multiple reflection occurring in the laminate intensifies the magneto-optical effect. A subject is detected by using the photodetector to detect a magneto-optical signal indicating a change in reflected light from the laminate resulting from a change in an optical property resulting from a reaction in the chemical detection layer.

Optical detection type chemical sensor

An electrostatic charge image developing carrier includes: magnetic particles; and a resin layer coating the magnetic particles and containing inorganic particles, in which an exposed area ratio of the magnetic particles is 0.1% or more and 4.0% or less, an average particle diameter of the inorganic particles is 5 nm or more and 90 nm or less, and a ratio B/A of a surface area B of the electrostatic charge image developing carrier to a plan view area A of the electrostatic charge image developing carrier is 1.020 or more and 1.100 or less when a surface of the electrostatic charge image developing carrier is three-dimensionally analyzed.

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Kanagawa, Japan

Satoshi Miura