Fujifilm Business Innovation Corp.

Fuji Xerox Co., Ltd.

Ryutaro Kembo

Tomoaki Tanaka

Yukiaki Nakamura

Shinya Sakamoto

Masaki Iwase

Masaru Takahashi

Tomohito Nakajima

Shinya Nakashima

Tomohiro Shinya

Naomi Miyamoto

Tetsuya Taguchi

Satomi Hara

Masato Ono

Tsuyoshi Murakami

Masayuki Seko

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

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 resin particle includes a binder resin; a fluorescent colorant A; and a colorant B other than the fluorescent colorant A, in which the resin particle includes a region RA in which a content of the fluorescent colorant A is larger than a content of the colorant B and a region RB in which a content of the colorant B is larger than a content of the fluorescent colorant A.

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 toner for developing an electrostatic charge image includes a binder resin. In dynamic viscoelasticity measurement, a storage modulus G'of the toner at 50&#xb0; C. is 2&#xd7;10Pa or more and 3&#xd7;10Pa or less, a storage modulus G&#x2032;of the toner at 100&#xb0; C. is 1&#xd7;10Pa or more and 1&#xd7;10Pa or less, and tan &#x3b4;of the toner in an entire temperature range of 50&#xb0; C. or more and 100&#xb0; C. or less is 0.05 or more and 1.5 or less.

Toner for developing electrostatic charge image, electrostatic charge image developer, and toner cartridge

An electrostatic charge image developing toner includes a polar group-containing olefin resin that is a polymer of a composition containing at least one nonpolar monomer unit (X) selected from the group consisting of ethylene and &#x3b1;-olefin having 3 to 10 carbon atoms, a polar monomer unit (Y) having at least one of a maleic acid group and a maleic anhydride group, and a monomer unit (Z) having a polymerizability to at least one of the nonpolar monomer unit (X) and the polar monomer unit (Y), in which an acid value of the toner is 10 mgKOH/g to 60 mgKOH/g.

An electrostatic charge image developing toner includes a continuous phase containing a binder resin (i); and a discontinuous phase that has a core containing a binder resin (ii) and a coating layer covering the core and containing a binder resin (iii), and is dispersed in the continuous phase.

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).

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Kanagawa, Japan

Ryutaro Kembo