Konica Corporation

Konica Minolta Business Technologies, Inc.

Konica Minolta, Inc.

Shanghai Kumhosunny Plastics Co., Ltd.

Shanghai Kumhossunny Plastics Co., Ltd

Ryuji Kitani

Tatsuya Nagase

Meizo Shirose

Masashi Mamino

Tomoyasu Umeno

Kenji Hayashi

Kenji Yamane

Qiang Li

Kouji Sugama

Masafumi Uchida

Michiaki Ishikawa

Lei Gao

Minqi Xin

Minghua Luo

Yasuko Yamauchi

Yasuharu Saita

Wenqiang Li

Yiqiang Yu

Ken Ohmura

Asao Matsushima

Kaori Soeda

Tomoe Kitani

Takao Yamanouchi

Tsuyoshi Uchida

Shoichiro Ishibashi

Keita Miyazaki

Yo Nakajima

Keiko Ujihara

A method for producing a thermoplastic resin composition includes melt-blending 50 to 80 parts by mass of a crystalline polyester resin and 20 to 50 parts by mass of an amorphous polyester resin with an extruder, thereby producing a first polyester resin compound. The method further includes melt-blending 90 to 99 parts by mass of the crystalline polyester resin and 1 to 10 parts by mass of a styrene-acrylonitrile-glycidyl methacrylate terpolymer with the extruder or a different extruder, thereby producing a second polyester resin compound. The method further includes compounding 1 to 10 parts by mass of the first polyester resin compound, 1 to 10 parts by mass of the second polyester resin compound, and respective predetermined amounts of a polycarbonate resin, a flame retardant, an antidrip agent, an antioxidant, a lubricant and a toughening agent.

Method for producing thermoplastic resin composition, thermoplastic resin composition and copier/printer exterior part

Provided is a thermoplastic resin composition having high flame resistance, high fluidity during injection molding, and improved impact resistance in a molded article. To provide a method for producing a thermoplastic resin composition, the method including a step (1) of obtaining a polyester resin mixture by melt-kneading a crystalline terephthalate-based polyester resin, and a polyester resin A including at least one kind selected from the group consisting of isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, anthracene dicarboxylic acid and pyridine dicarboxylic acid as an aromatic dicarboxylic acid component with an extruder, and a step (2) of mixing the polyester resin mixture, a polycarbonate resin, a flame retardant and a toughening agent.

Method for producing thermoplastic resin composition

Provided is a thermoplastic resin composition having high flame resistance and high fluidity during injection molding, and improved impact resistance in a molded article. A method for producing a thermoplastic resin composition, the method including the step (1) of obtaining a polyester resin mixture by melt-kneading 50 to 80 parts by weight of crystalline polyester resin and 20 to 50 parts by weight of amorphous polyester resin with an extruder, and the step (2) of mixing the polyester resin mixture, a polycarbonate resin, a flame retardant, a dripping inhibitor and a toughening agent, wherein the cylinder temperature of the extruder is 250 to 280&#xb0; C.

A copier/printer exterior part uses a halogen-free flame-retardant resin composition. The halogen-free flame-retardant resin composition includes 5 wt % to 50 wt % of unused polycarbonate, 20 wt % to 63 wt % of recycled polycarbonate, 5 wt % to 35 wt % of recycled polyethylene terephthalate, 0.2 wt % to 2 wt % of a styrene-acrylonitrile-glycidyl methacrylate terpolymer, 5 wt % to 15 wt % of a toughener, 10 wt % to 20 wt % of a flame retardant, 0.1 wt % to 0.8 wt % of a flame-retardant antidrip agent, 0.1 wt % to 1 wt % of an antioxidant, and 0.1 wt % to 2 wt % of a lubricant. The styrene-acrylonitrile-glycidyl methacrylate terpolymer includes 1 wt % to 5 wt % of glycidyl methacrylate and 20 wt % to 33 wt % of acrylonitrile.

Copier/printer exterior part using halogen-free flame-retardant resin composition including recycled polycarbonate and recycled polyethylene terephthalate

Provided is a tubular flow reactor containing: a cylindrical channel; a mixing shaft which is concentric with the cylindrical channel; and a mixing blade attached to the mixing shaft, wherein the tubular flow reactor satisfy the following requirements: t&#x3c;2C and t/2C&#x3c;A/C&#x2266;1, provided that C is a radius of the mixing shaft, t is a thickness of the mixing blade; A is a distance between a mixing blade plane B located at a forward position in a rotating direction of the mixing blade and a plane S passing through the center of the mixing shaft in a shaft direction, when plane B and plane S are parallel; and the mixing blade plane B is located at a more forward position in the rotating direction than the plane S.

Tubular flow reactor and method for producing resin particle using the same

An embodiment may be an electrophotographic toner which comprises at least one toner particle which comprises an inner layer and an outer layer covering the inner layer, wherein a cross-sectional area ratio of the outer layer to the inner layer is 0.05-0.46, and wherein a non-uniform thickness exists in the outer layer, and further the average thickness (t) taken at 5 positions as calculated by, is about 0.2&#x2014;about 1.0 &#x3bc;m, t=(t+t+t+t+t)/5 (unit of t-tis &#x3bc;m) wherein trepresents a thickness of the thickest part of the outer layer, and t-teach represent a thickness of a second to a fifth thickest part of the outer layer in one particle, and wherein a glass transition point Tg of the inner layer is about 2&#x2014;about 45&#xb0; C. lower than Tg of the outer layer.

Toner for electrophotography

Disclosed is a method of manufacturing toner comprising the steps of adding oil-droplets containing a radically polymerizable monomer into an associated particle dispersion formed by association-fusing resin particles and colorant particles, and forming a shell by coating a resin produced via polymerization on a surface of the associated particle by polymerizing the radically polymerizable monomer in the associated particle dispersion, wherein a hydrophilicity degree of the resin contained in the shell is larger than a hydrophilicity degree of a resin contained in the associated particle.

Toner and method of manufacturing toner

A toner for developing a static latent image is disclosed. The colored resin particle contains a resin and a colorant, and the colored resin particle contains at least two kinds of compound each represented by the following Formula, and total amount is from 1 to 1,000 ppm by weight, wherein, R is an aliphatic hydrocarbon group having from 6 to 22 carbon atoms, M is a monovalent metal atom or an ammonium

Toner for developing static latent image, method for producing toner for developing static latent image

An electrostatic photographic image forming toner is disclosed. The toner comprises a toner particle containing a binder resin and a colorant in which the binder resin has a specific softening point of from 105 to 132&#xb0; C. and the toner particle has a hardness of from 6.0 to 24.0 mN and a circularity of from 0.92 to 0.99.

Toner particle having a hardnes of 6.0 to 24.0 mN and a circularity of 0.92 to 0.99

A toner for forming a color image comprises chromatic toners and a black toner is disclosed. Each of the toners is produced by polymerization of a polymerizable monomer in an aqueous medium, the difference of re-dispersion electro-conductivity of each of the toners is within the range of from 0.8 to 12 &mgr;s/cm, the number of free colorant particles on the black toner surface is less than 9 per 500 toner particles, and a light absorbance at 500 nm of a black toner dispersion is nor more than 0.08.

Toner for developing static latent image to form color image

A carrier for developing an electrostatic latent image is disclosed. The carrier comprises a magnetite core and a resin coated on the magnetite core wherein the magnetite core contains FeO and Fe.sub.2 O.sub.3, the mole ratio of FeO/Fe.sub.2 O.sub.3 being 0.15/1.0 to 0.7/1.0, and the carrier contains a magnesium atom containing material at a surface of the carrier, magnesium atom content ratio at the surface being 1.5 to 5.0 (percent in the number of atoms). A developer for developing an electrostatic latent image using the carrier and a developing method using the carrier or the developer is also disclosed.

Carrier for developing electrostatic image, developer and developing

A carrier for a developer developing an electrostatic image is disclosed. The carrier contains magnesium from 2.0 to 25.0 by means of number of atoms by percent in surface portion. According to the invention excellent charge rising properties may be consistently exhibited for extended time periods, and neither toner scattering nor background deposits on images are caused.

Disclosed is a toner for developing an electrostatic latent image, comprising colored particles containing a colorant and a binder resin, and fine particles, wherein said fine particles have a releasing index of 10 to 50 in terms of a turbidity.

Toner for developing electrostatic image and method for forming

Disclosed is a toner kit for an electrophotography, comprising a black toner and a first toner whose color is other than black, wherein said first toner has a first softening point T.sub.1, said first toner comprises a first releasing agent, a first intermolecular crosslinked polyester resin having a second softening point T.sub.2 of 100.degree. C. to 150.degree. C., obtained by a reaction of an alcohol having at least two hydroxyl group and an aromatic carboxylic acid having at least two carboxyl group and a processed pigment having a third softening point T.sub.3 of 100.degree. C. to 150.degree. C., said processed pigment comprising a pigment and a resin in which said pigment is dispersed, and said resin forms domain structure in said first polyester resin, and

Toner kit for electrophotography

A toner for forming an electrophotographic image is disclosed. The toner comprises (1) colored particles comprising a resin and a colorant, (2) fine resin particles comprising a polymer formed by condensation of melamine and formaldehyde, and have a volume average diameter of 0.01 .mu.m to 1.0 .mu.m, and (3) fine particles of an inorganic material (I) having a volume average diameter of 0.01 .mu.m to 0.20 .mu.m and a standard deviation of distribution of the volume average diameter G satisfying the condition of 10.ltoreq..sigma..ltoreq.30. It is particularly preferred that the toner is used as a tow componet developer together with a negatively chargeable carrier which comprises (1) magnetic core particles each coated with a coating layer comprising a mixture of homopolymer of an alicyclic methacrylate monomer and a homopolymer of an acyclic methacrylate monomer, or a copolymer of an alicyclic methacrylate monomer and an acyclic methacrylate monomer, and (2) a fine particles of an inorganic material (II).

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Hino, Japan

Ryuji Kitani