Konica Minolta Business Technologies, Inc.

Konica Minolta, Inc.

Yohei Ohno

Kouji Sugama

Noboru Ueda

Hiroyuki Yasukawa

Ito Koga

Keisuke Asano

Naohiro Hirose

Miyuki Murakami

Kaori Matsushima

Kaori Soeda

Hajime Tadokoro

Natsuki Ito

Kenshi Miyajima

Hidehito Haruki

Shinichi Hamaguchi

Shinya Obara

Fumitaka Mochizuki

Tatsuya Fujisaki

Shingo Fujimoto

Natsuko Kusaka

Go Yamaguchi

Naoko Uemura

Provided is a color image forming process using colorant-containing toners of multiple colors containing colorants respectively having different resistances, wherein each of the colorant-containing toners contains an amorphous resin, a crystalline polyester resin, and a mold release agent, at least the crystalline polyester resin contained in the colorant-containing toner other than the colorant-containing toner containing a colorant having the lowest resistance contains a hybrid crystalline polyester resin formed by bonding a crystalline polyester polymerized segment and an amorphous polymerized segment, and the content of the amorphous polymerized segment in the hybrid crystalline polyester resin contained in the colorant-containing toner other than the colorant-containing toner containing a colorant having the lowest resistance is greater than the content of the amorphous polymerized segment in the crystalline polyester resin contained in the colorant-containing toner containing a colorant having the lowest resistance.

Color image forming process and color toner set

An image forming method includes using yellow toner, magenta toner, cyan toner, and black toner in which each of the yellow toner, the magenta toner, the cyan toner, and the black toner includes a crystalline polyester resin having a constitutional unit derived from a linear chain aliphatic diol, an amorphous resin, a colorant, and a releasing agent. A carbon number of a linear chain aliphatic diol component forming the crystalline polyester resin contained in the black toner is 6 or more, and a carbon number of a linear chain aliphatic diol component forming the crystalline polyester resin contained in each of the yellow toner, the magenta toner, and the cyan toner is 3 or more and 5 or less.

Image forming method and toner set for developing electrostatic latent image

Provided is an electrostatic image developing toner having toner mother particles containing a binder resin and a releasing agent, wherein the binder resin contains an amorphous vinyl resin and a crystalline polyester resin; the releasing agent contains a first releasing agent component containing an ester wax and a second releasing agent component containing a microcrystalline wax; a content of the first releasing agent component in the releasing agent is in the range of 40 to 98 mass %; a content of the second releasing agent component in the releasing agent is in the range of 2 to 60 mass %; and a content of the crystalline polyester resin in the binder resin is in the range of 5 to 20 mass %.

Electrostatic image developing toner

A manufacturing method of an organic-inorganic composite material includes a flocculation and fusion step to flocculate and fuse composite particles in a liquid medium, the composite particles being formed by inorganic fine particles being coated by coating layers. In one embodiment, an average particle diameter of the inorganic fine particles is 1 nm or larger and 30 nm or smaller.

Manufacturing method of organic-inorganic composite material and optical material

An orange toner for developing electrostatic charge images includes a binder resin; and a colorant including a first color material and a second color material; wherein the first color material has a hue angle of &#x2212;20&#xb0; to 80&#xb0; in a L*a*b* color system, the second color material includes C.I. Solvent Orange 63, and the second color material has a content of 0.05 to 0.2 parts by mass to 100 parts by mass of the binder resin.

Orange toner for developing electrostatic charge images

Disclosed is a green toner for developing a static latent image containing a binder resin and a colorant, and the colorant contains C.I. Solvent Green 5 and colorant compound X represented by Formula (1), and content ratio of C.I. Solvent Green 5 in whole amount of the colorant is 5 to 50% by weight, in the Formula (1), Mis a metal atom of Group 14, Q is independently a monovalent substituent, m and n are each 0 or 1, at least one of m and n is 1, and A is independently an atomic group forming an aromatic ring which may have a substituent.

Green toner for developing static latent image and full color image forming method

Disclosed is a cyan toner for developing an electrostatic image containing a cyan colorant, and the cyan colorant comprises colorant compound X represented by Formula (1) and colorant compound Y represented by Formula (2). wherein Mis a metal atom of Group 14, Q is independently a monovalent substituent, m and n are each 0 or 1, at least one of m and n is 1, and A is independently an atomic group forming an aromatic ring which may have a substituent, wherein, Mis Zn or Al, and A is independently an atomic group forming an aromatic ring which may have a substituent.

Cyan toner for developing electrostatic image

Provided is a toner comprising toner particles containing a binder resin and coloring matters, wherein the coloring matters comprise a dye represented by Formula (X-1), a metal compound represented by Formula (1) and a quinacridone pigment represented by Formula (2): 

Electrophotographic toner

Provided is a set of toners comprising a yellow toner, a magenta toner, a cyan toner and a black toner for forming a full color image with an electrophotographic method, wherein the yellow toner comprises toner particles containing at east one pigment selected from the group consisting of C. I. Pigment Yellow 74, C. I. Pigment Yellow 139, C. I. Pigment Yellow 180, C. I. Pigment Yellow 185 and C. I. Pigment Yellow 155; the magenta toner comprises toner particles containing a rhodamine based dye represented at least by Formula (1) and Formula (2), and the cyan toner comprises toner particles containing a phthalocyanine based dye represented by Formula (5): 

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Tokyo, Japan

Yohei Ohno