Kao Corporation

Konica Corporation

Nippon Paint Compnay, Ltd.

Kuniyasu Kawabe

Mitsuhiro Sasaki

Shin-ichiro Yasuda

Katsutoshi Aoki

Takashi Yamaguchi

Tetsuya Asano

Tadashi Sakuma

Hiroyuki Kawaji

Eizi Morimoto

Norihiro Hayashi

Koji Akiyama

Tetsuhiro Semura

Hideyo Nishikawa

Masayuki Maruta

Yasunori Inagaki

Shinichiro Yasuda

Yukiya Sato

Shingo Tanaka

Shinji Moriyama

Tetsuya Ueno

Koji Kameyama

Tetuhiro Semura

Kazuhiro Fujiki

Ken-ichi Suenaga

Masafumi Uchida

Tohru Katoh

Hiroyuki Takagiwa

Takehiro Tsutsumi

Satoru Ikeuchi

Harumasa Yamasaki

Yoshihiro Ueno

Koji Azuma

Yoshihiro Fukushima

Hisakazu Tajima

Koji Shimokusa

Michitaka Sawada

Shigemi Wakabayashi

Masayoshi Nawa

Hiroyoshi Hiramatsu

Eiji Morimoto

Kenji Kaida

Kanji Yoshimura

Nirohiro Hayashi

Yoko Matsumoto

A combination of powder coatings usable in a powder coating method for forming a coating film having visually homogeneous hue by mixing two or more powder coatings of which each color is different. In the combination of powder coatings, each of differences in triboelectric charges of two or more powder coatings is 5.0 &#x3bc;C/g or less. The coating method usable herein includes the step of applying onto a substrate to be coated two or more powder coatings of which each color is different, in which the triboelectric charges are controlled in the above given ranges.

Powder coating

A molding composition comprising a fibrous material, a crystalline unsaturated polyester, a non-crystalline unsaturated polyester, and a radical generator, and a molded article obtained by molding the molding composition are disclosed.

Molding composition

A thermosetting water-based resin composition comprising an oil-soluble initiator of which a temperature for one-minute half-life is from 90&deg; to 270 &deg; C. and a polycondensation resin comprising an unsaturated dicarboxylic acid having a radical-polymerizable unsaturated bond or an acid anhydride thereof as at least one constituent monomer, wherein the polycondensation resin has an acid value of from 3 to 100 mg KOH/g, and wherein said oil-soluble initiator is present in said polycondensation resin; a process for preparing the thermosetting water-based resin composition; a molding compound composition comprising the water-based resin composition; and a molding product prepared by molding the molding compound composition.

Water-based resin composition

A molding composition comprising an aggregate &lsqb;Component (A)&rsqb;, a linear unsaturated polyester &lsqb;Component (B)&rsqb; and/or linear unsaturated polyester polyamide &lsqb;Component (C)&rsqb;, and a radical generator &lsqb;Component &lsqb;D&rsqb;), characterized in that each of Component (B) and Component (C) comprises a specific alkylene oxide adduct of bisphenol A in an amount of from 3 to 50 mol % based on the total amount of constituent monomers of each of Component (B) and Component (C) and a molded article obtained by molding the composition.

A molding composition comprising (A) a fibrous material, (B) a nonlinear unsaturated polyester and/or (C) a nonlinear unsaturated polyester-polyamide, and (D) a radical generator, and a molded article obtained therefrom.

Aqueous ink for ink-jet printing comprises an emulsion of fine polymer particles and contains at least one compound selected from an amino acid or a salt thereof and the like.

Aqueous ink for ink-jet printing

The toner for electrophotography contains a binder resin, wherein the binder resin has a condensation polymerization-type resin for forming a matrix and an addition polymerization-type resin for forming a dispersed domain. The dispersed domain with a cross-sectional diameter of not more than 2 .mu.m has an areal proportion of not less than 90%, based on the total cross-sectional area of the dispersed domain. This toner is stable, which is capable of maintaining a suitable tribo electric charge, thereby providing a high image quality in which the formed images do not undergo deterioration even under severe environmental conditions. Moreover, in a fixing method using a heat roller; fixing at a low temperature can be performed without using an offset inhibiting liquid.

Process for producing a toner for electrophotography

The thermosetting coating composition in a powdery form, includes (a) a binder resin prepared by the steps comprising preparing a starting material monomer mixture of two different polymerization reactions, each of the polymerization reaction being carried out in an independent reaction path, and then concurrently carrying out both of the two different polymerization reactions in one reaction vessel; (b) a colorant; and (c) a crosslinking agent. The coating film is prepared by curing the above thermosetting coating composition.

Thermosetting coating composition

Aqueous ink

The present invention is directed to an encapsulated toner for heat-and-pressure fixing having a heat-fusible core material containing at least a thermoplastic resin and a coloring agent and a shell formed thereon so as to cover the surface of the core material. An amorphous polyester is used as the main component of the shell, and the amount of the amorphous polyester is normally 3 to 50 parts by weight, based on 100 parts by weight of the core material. The encapsulated toner of the present invention is excellent in offset resistance, fixable even at a low temperature and excellent in blocking resistance when it is used for heat-and-pressure fixing using a heat roller.

Encapsulated toner for heat-and-pressure fixing and method for

The encapsulated toner for heat-and-pressure fixing including a heat-fusible core material containing at least a thermoplastic resin and a coloring agent and a shell comprising a hydrophilic resin formed thereon so as to cover the surface of the core material, wherein the core material contains a silicone oil having a kinematic viscosity of from 10 to 500 cSt at 25.degree. C., and wherein the encapsulated toner is obtainable by in situ polymerization method. Such an encapsulated toner can be produced by in situ polymerization method including the following steps (a)-(c): (a) dissolving an amorphous polyester in a mixture comprising a core material-constituting monomer, a polymerization initiator, a silicone oil, and a coloring agent; (b) dispersing the mixture obtained in step (a) in an aqueous dispersant, and localizing the amorphous polyester on the surface of droplets of a core-constituting material to give a polymerizable composition; and (c) polymerizing the polymerizable composition obtained in step (b) by in situ polymerization method to form a core material, wherein the core material is covered with a shell comprising the amorphous polyester, thereby giving an encapsulated toner.

Encapsulated toner for heat-and-pressure fixing and method for producing

The present invention is directed to an encapsulated toner for heat-and-pressure fixing whose shell contains a copolymer having one or more acid anhydride groups as the main component. The encapsulated toner of the present invention has excellent offset resistance and fixing ability even at a low fixing temperature, and also it is excellent in blocking resistance. Further, since the resin having a negative charge is used as a shell material, clear images free from background contamination can be stably formed for a large number of copying.

The binder resin for producing a toner includes the following three resins (A) to (C): resin (A) having a softening point of 120.degree. C. or more and 170.degree. C. or less, a glass transition temperature of 58.degree. C. or more and less than 75.degree. C., and a weight percentage of components insoluble to chloroform at 25.degree. C. of 5% by weight or more and 50% by weight or less; resin (B) having a softening point of 90.degree. C. or more and 120.degree. C. or less, a glass transition temperature of 58.degree. C. or more and less than 75.degree. C., and a weight percentage of components insoluble to chloroform at 25.degree. C. of less than 5% by weight; and resin (C) having a softening point of 80.degree. C. or more and less than 110.degree. C., a glass transition temperature of 45.degree. C. or more and less than 58.degree. C., and a weight percentage of components insoluble to chloroform at 25.degree. C. of less than 5% by weight.

Binder resin and toner for electrostatic development containing the same

A method of forming fixed images including charging a photoconductor; exposing the photoconductor to light; developing an electrostatic latent image so that a toner is applied to the electrostatic latent image formed on the photoconductor to form a visible image; transferring the formed visible image to a recording medium; and fixing the transferred visible image onto the recording medium, such that the toner is a thermally dissociating encapsulated toner and the fixing process is carried out at a temperature of not less than 40.degree. C. and not more than 120.degree. C.

Apparatus for forming fixed images having encapsulated toner

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Wakayama, Japan

Kuniyasu Kawabe