Dainippon Ink and Chemicals, Incorporated

Nansei Tashiro

Osamu Maruyama

Yasuhiko Kojima

Katsuji Takahashi

Noboru Okoshi

Hideki Watanabe

Naohito Saito

Kinji Shinzo

Koji Oe

Yasuyuki Watanabe

Minoru Nomura

Seiichi Uno

Shinji Shimizu

Kin-ichi Kudo

Minoru Homma

Soichi Shimoyama

In order to provide a computer-to-plate (CTP) plate in which an image can be inscribed by a laser beam having Ithe maximum strength in a near infrared or infrared region, and heat processing is not necessary prior to developing a latent image, and which allows the use of a conventional printing apparatus as it is upon printing, (I) a lithographic printing plate is provided which has on a substrate, a photosensitive layer comprising a photosensitive composition containing a crosslinking agent, an aqueous dispersion of resin fine particles made of a resin which is self water-dispersible having a carboxylic group and a functional group capable of performing cross-linking reactions with the crosslinking agent, and an infrared absorption agent; and (II) an image forming method is provided which is characterized in that after an image has been formed on a photosensitive layer of the lithographic printing plate set forth in the above (I) by using a laser beam, the image is subjected to wet development.

Lithographic printing plate and image forming method

A encapsulation method applicable to pharmaceutical preparations, cosmetics, pigment imparting materials such as inks, paints, dyes, electrostatic toner, and others is disclosed, as are methods of use thereof. According to the disclosed method, the use of auxiliary materials such as emulsifiers or surfactants can be dispensed with, and ultramicrocapsules having a readily controllable diameter of 1 .mu.m and less can be produced. The disclosed method includes the steps of preparing an organic phase consisting of a mixture of one or more hydrophobic liquid and/or solid materials and self dispersable resin which through the action of an aqueous phase, self disperses into particles with a diameter of 0.1 .mu.m and less; combining an aqueous phase with the organic phase, whereby self emulsification takes place, thereby encapsulating the one or more hydrophobic liquid and/or solid materials.

Microcapsules, and encapsulation method therefor

A toner containing at least a colorant and a resin, in which the resin is a polyester resin having a total acid radical content of 2 to 50 mg equivalents per 100 g and having a weight-average molecular weight of 2,000 to 100,000, and the toner particles are spherical and have an average particle diameter of 3 to 13 .mu.m. The toner is produced by a process comprising adding an aqueous medium to a dispersion of at least a colorant and an anionic self-emulsifiable resin in a water-miscible organic solvent to cause phase inversion to obtain an emulsion, and separating the produced particles from the aqueous medium, followed by drying, in which the anion self-emulsifiable resin is a polyester resin having a neutral salt structure, having a total acid radical content of 2 to 50 mg equivalents per 100 g and having a weight-average molecular weight of 2,000 to 100,000.

Toner for developing electrostatic latent image and process for

An encapsulation method applicable to pharmaceutical preparations, cosmetics, pigment imparting materials such as inks, paints, dyes, electrostatic toner, and others is disclosed, as are methods of use thereof. According to the disclosed method, the use of auxiliary materials such as emulsifiers or surfactants can be dispensed with, and ultramicrocapsules having a readily controllable diameter of 1 .mu.m and less can be produced. The disclosed method includes the steps of preparing an organic phase consisting of a mixture of one or more hydrophobic liquid and/or solid materials and self dispersible resin which through the action of an aqueous phase, self disperses into particles with a diameter of 0.1 .mu.m and less; combining an aqueous phase with the organic phase, whereby self emulsification takes place, thereby encapsulating the one or more hydrophobic liquid and/or solid materials.

Encapsulation method

A process for producing a rosin-modified phenolic resin modified with an animal or vegetable oil, which has superior properties as a vehicle for offset printing inks; and a resin composition for printing inks comprising the oil-modified and rosin-modified phenolic resin obtained by the aforesaid process as an essential ingredient.

Process for producing a resin for printing ink, and a composition

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Sodegaura-machi, Japan

Nansei Tashiro