Fuji Xerox Co., Ltd.

Fujitsu Corporation

Fujifilm Business Innovation Corp.

Tomoaki Tanaka

Ryutaro Kembo

Yasushige Nakamura

Yoshimichi Katagiri

Asafumi Fujita

Kotaro Yoshihara

Noriyuki Mizutani

Eisuke Iwazaki

Narumasa Sato

Yukiaki Nakamura

Satoshi Takezawa

Shinichi Yaoi

Katsumi Sugimoto

Kenji Fuke

Katsuya Shimatsu

Yasuhiro Wakabayashi

Tsuyoshi Murakami

Shinya Sakamoto

Eiji Suzuki

Seijiro Ishimaru

Tetsuya Taguchi

Hiroaki Yoshida

Masaru Takahashi

Yoshihiro Tonomoto

Satomi Hara

Tsuneo Mizuno

Katsuji Ebisu

Masae Nakamura

Keiko Tonai

Masato Ono

Masayuki Seko

Norio Sawatari

Teppei Yawada

Sadaaki Yoshida

Toshiaki Narusawa

Yojiro Kumagae

Kana Yoshida

Masaki Iwase

Makoto Fukuda

Takahiro Kashikawa

Tetsu Takahashi

Hiroyuki Sasaki

Atsushi Tano

Erina Saito

Shigenobu Utaka

Teturou Nakashima

Hitoshi Yoshii

Kazumi Kawabata

Katsumi Tateno

Seijirou Ishimaru

Toshihiro Yukawa

Yoshimi Takizawa

An electrostatic charge image developing toner includes a toner particle that contains a pyrazolotriazole-based dye and a zirconium oxide particle.

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

A green toner for electrostatic charge image development includes green toner particles containing a binder resin, an azomethine fluorescent pigment having an emission peak in a wavelength region of 500 nm or more and 550 nm or less in an emission spectrum, and a non-fluorescent pigment having a reflection peak in a wavelength region of 480 nm or more and 540 nm or less in a reflection spectrum, wherein a mass proportion of the azomethine fluorescent pigment in the green toner particles is 3% by mass or more and 10% by mass or less and a mass ratio M1/M2 of a content M1 of the azomethine fluorescent pigment to a content M2 of the non-fluorescent pigment is 1 or more and 5 or less; and oil-treated silica particles externally added to the green toner particles.

Green toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

An electrostatic charge image developing toner includes a toner particle that contains a silicon phthalocyanine dye and a zirconium oxide particle.

A resin particle includes a fluorescent colorant and a binder resin. The fluorescent colorant is bound to the binder resin by a chemical bond.

Resin particle

A resin particle includes a fluorescent colorant and a color pigment. A hue angle of the resin particle and a hue angle of the fluorescent colorant are different from each other. When a fluorescence peak wavelength in a spectral reflectance of the fluorescent colorant is represented by A (nm), an integrated value of a spectral reflectance (%) of the color pigment in a wavelength range of from A−30 (nm) to A+30 (nm) is 2,500 or more.

A unit includes: a developing device configured to develop an electrostatic charge image that is formed on a surface of an image carrier, as a toner image with a developer including a flat toner containing a flat pigment, the developer being accommodated in the developing device; and a transfer device including an intermediate transfer belt onto which the toner image formed on the surface of the image carrier is primarily transferred, a primary transfer device configured to primarily transfer the toner image formed on the surface of the image carrier to a surface of the intermediate transfer belt, and a secondary transfer device configured to secondarily transfer the toner image on the surface of the intermediate transfer belt to a surface of a recording medium, wherein the intermediate transfer belt contains a resin and conductive carbon particles, and after the flat toner adheres to an outer circumferential surface of the intermediate transfer belt in a loading amount of 3 g/cm, in a case where air is blown to the outer circumferential surface from an upper side of the outer circumferential surface while increasing a blowing pressure, all the flat toner adhering to the outer circumferential surface is separated from the outer circumferential surface at a blowing pressure of 25 kPa or less.

Unit and image forming apparatus having a certain adhesive force property

A resin particle set includes a fluorescent color resin particle containing a fluorescent coloring agent; and a colored resin particle containing a colored coloring agent, wherein a volume average particle diameter of the fluorescent color resin particles is larger than a volume average particle diameter of the colored resin particles, and an average circularity of the fluorescent color resin particles is 0.93 or more.

Resin particle set

A toner set includes a white toner that includes white toner particles containing white colored particles, and at least one selected from a color toner that includes color toner particles containing colored particles and a transparent toner that includes transparent toner particles, wherein an average circularity of the white toner particles is smaller than an average circularity of either the color toner particles or the transparent toner particles and a small-diameter-side number particle diameter distribution index of the white toner particles is greater than a small-diameter-side number particle diameter distribution index of either the color toner particles or the transparent toner particles.

Toner set, white toner, and electrostatic charge image developer

An electrostatic charge developing toner includes a toner particle that includes a pigment particle having a surface aluminum proportion by an X-ray photoelectron spectroscopy of 6.0 atom % or more and 12.0 atom % or less and a binder resin having a carboxy group.

An electrostatic charge image developing toner set includes a white toner that includes white toner particles containing a core and a coating layer which does not contain a coloring agent and a colored toner that includes colored toner particles containing a core and a coating layer which does not contain a coloring agent, wherein with respect to a difference between an average equivalent circle diameter [Rw] of the cores (W) in the white toner particles and an average equivalent circle diameter [Rw] of the white toner particles [Rw&#x2212;Rw], and a difference between the average equivalent circle diameter [Rc] of the cores (C) in the colored toner particles and the average equivalent circle diameter [Rc] of the colored toner particles [Rc&#x2212;Rc], a relationship of the following Expression (1) is satisfied:[2&#x2212;1]&#x3c;[2&#x2212;1]&#x2003;&#x2003;(1).

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

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.

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%.

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

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Kanagawa, Japan

Tomoaki Tanaka