Canon Kabushiki Kaisha

Yuko Nishioka

Masato Katayama

Akio Kashiwazaki

Hiromichi Noguchi

Makiko Kimura

Yoshie Nakata

Kenichi Moriya

Masami Ikeda

Masahiko Higuma

Mamoru Sakaki

Mifune Hirose

Yutaka Kurabayashi

Yuji Akiyama

Katsuhiko Takahashi

Nobuyuki Kuwabara

Miyuki Fujita

Shinichi Tochihara

Eiichi Suzuki

Provided is a recording method for image formation on a recording medium by application thereon of an ink containing a water-soluble dye having an anionic group or a cationic group in the molecule: the recording medium comprising a substance having an ionic group counter to the anionic or cationic group of the water-soluble dye and having molecular weight of not higher than 1,000, and a polymeric substance having molecular weight of not lower than 2,000.

Recording medium

An ink-jet printing process using an ink containing a dye having an ionicity. The process includes the steps of: providing a cloth containing (a) a substance having an ionicity opposite to the ionicity of the dye and a molecular weight of from 100 to 700, or a nonionic surfactant having a molecular weight of from 100 to 700 and an H.L.B. of from 7 to 15, and (b) a polymeric substance having an ionicity opposite to the ionicity of the dye and a molecular weight of from 2,000 to 200,000; printing on the cloth with the ink; washing the cloth after printing; and drying the cloth.

Ink-jet printing cloth, printing process using the same and print obtained by the process

Disclosed herein is a printing medium, comprising a liquid-absorbent base material, an ink-receiving layer provided on the base material, which comprises a pigment, a binder and a cationic substance, and a surface layer provided on the ink-receiving layer composed principally of cationic ultrafine particles as inorganic particles.

Printing medium, and ink-jet printing process and image-forming process using the same

A composition comprising a water-soluble cationic group-containing high-molecular compound (P1) derived from the reaction of (A) epichlorohydrin and a dialkyl or dialkanol amine, or (B) a glycidyl group-terminated hydrophilic oligomer and a diamine, dialkylamine or dialkanolamine; optionally, a high-molecular compound (P2) having a condensable functional group in a side chain such as alkylolacrylamide-bearing high-molecular compound (E) or hydrolyzable trialkylsilyl group-containing acrylic ester high-molecular compound (F); and a poly(meth)acrylate (P3) is coated onto a substrate and cured by ultraviolet radiation to form a printing medium.

Coating and curing composition of water-soluble cationic

A process for producing a printing medium is disclosed wherein a composition is applied to a substrate and cured by heat treatment, said composition comprising a water soluble cationic polymer (P1) selected from the group consisting of polymer (A) obtained by the addition polymerization of epichlorohydrin and a dialkylamine or dialkanolamine; polymer (B) derived from the addition polymerization of a glycidyl groups-terminated hydrophilic oligomer and an asymmetric diamine, dialkylamine or dialkanolamine; acrylic polymer (C) with a cationized hydroxyl group-containing molecular side chain; and polyvinyl alcohol (D) with a cationized hydroxyl group-containing molecular chain; and a condensable functional group-containing polymer (P2) selected from the group consisting of alkylolacrylamide copolymer and a hydrolyzable trialkylsilyl group-containing copolymer.

Composition of cationic group-containing polymer, and condensable

Provided is a composition curable by active energy rays, comprising a cationic polyacryloyl compound having two or more acryloyl groups and one or more cation groups in a molecule, represented by any of General Formulae (1) to (6) ##STR1## wherein Z.sub.1 to Z.sub.6 represent independently a residue derived from a polyhydric alcohol or a polyepoxide,

Active energy ray-curable composition, recording medium and

A recording medium has an ink receiving layer provided on a substrate and containing (A) polyvinyl acetal resin and (B) alumina hydrate at a ratio A/B within the range of 50/1 to 6/4.

Growing community of inventors

Tokyo, Japan

Yuko Nishioka