Abstract: Provided is an ink-jet color recording process to form color images on a recording medium by an ink-jet system applying a plurality of colored pigment-based inks, wherein each of the colored pigment inks comprises a pigment dispersant, and a pigment dispersant contained in at least one of colored pigment-based inks is different from a pigment dispersant contained in the remaining colored pigment-based inks.

Abstract: A pressure-sensitive transferring protective covering material comprising at least (a) first flexible substrate, (b) an adhesive layer, (c) a solid resin layer, and (d) a second flexible substrate which are stacked in the named order, wherein said first flexible substrate (a) has a peel force of 30 g/inch to 120 g/inch against said adhesive layer (b), said adhesive layer (b) contains a hindered amine series light stabilizer and has a cohesion of 500 g/inch to 1500 g/inch, said solid resin layer (c) comprises a transparent resin layer containing a ultraviolet absorber and having a glass transition temperature of 50.degree. C. or above, and said second flexible substrate (d) has a peel force of 120 g/inch to 400 g/inch against said solid resin layer (c).A method for protecting and covering a print formed on an object using said pressure-sensitive transferring protective covering material.

Abstract: Disclosed herein is an ink comprising a pigment, a water-soluble resin, a water-soluble monomer to be set by application of energy and a photopolymerization initiator in an aqueous liquid medium.

Abstract: Provided is an ink, having a surface tension of not less than 30 mN/m and a viscosity of not more than 5 mpa.cndot.s, and comprising a water-soluble dye, water, at least one compound selected from the Compound Groups A and B, and at least one compound selected from the Compound Group C.

Abstract: Disclosed herein is a recording ink suitable for use in image recording together with a liquid composition containing a cationic substance, wherein the recording ink comprises a coloring material and a water-soluble polymeric compound which exhibits nonionic properties in the ink and has an alicyclic, nitrogen-containing heterocycle.

Abstract: 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.

Abstract: A method for surface treatment of an ink jet recording head, having the step of transferring a surface treating agent provided on a support to the ink discharging opening surface having ink discharging openings of an ink jet recording head formed thereon from said support.

Abstract: 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,K.sub.1 represents independently a radical of the formula ##STR2## K.sub.2 represents a radical of the formula ##STR3## R.sub.1 represents independently a radical of the formula ##STR4## wherein R.sub.3 is independently H-- or CH.sub.3 --, and R.sub.2 represents independently a radical of the formulaCH.sub.2 .dbd.CHCOO--, or CH.sub.2 .dbd.C(CH.sub.3)COO--.

Abstract: An ultraviolet-curing composition comprising an ultraviolet-curing compound having at least one carboxyl group and at least one ultraviolet-curing unsaturated bond in its molecule, a base, water, and a polymerization initiator, and having a viscosity of 10 centipoises or below.

Abstract: Disclosed herein is a dye represented by any one of the following general formulae ##STR1## wherein D is a chromophore, R is a bivalent or trivalent linking group, M is a tetravalent linking group, and IM is a secondary or tertiary amine residue substituted by at least one radical selected from the group consisting of alkyl groups, a carboxyl group, salts of the carboxyl group, a sulfonic group, salts of the sulfonic group, a phosphoric group and salts of the phosphoric group, with the proviso that D, R, M and IM have 1 to 12 acid groups in total.

Abstract: An ink jet head includes a first liquid path, the end of which defines a discharge port through which ink is ejected, and a second liquid path having a discharge energy generating element for generating energy to be used for discharging the ink through the discharge port, the discharge energy generating element including a heat generating element for applying heat to discharge ink, the discharge energy generating element generating pressure when driven. The first liquid path is in fluid communication with the second fluid path in the vicinity of the discharge energy generating element, and the first and second liquid paths are substantially parallel to one another. A wall is disposed at least partially above the discharge energy generating element, this wall having a slanted surface which guides the pressure above the discharge energy generating element generated when the discharge energy generating element is driven into the first liquid path and toward the discharge port.

Abstract: An ink comprising water, a water-soluble organic solvent, a coloring material and a water-soluble oligomer, wherein said water-soluble oligomer is a polymer comprising at least one of monomers represented by the formulae (I), (II) and (III):CH.sub.2 .dbd.C (R)-COO-(CH.sub.2 CH.sub.2 O).sub.m (CH.sub.2).sub.p H(I)CH.sub.2 .dbd.C(R)--COO--(CH.sub.2 CH.sub.2 O).sub.q --phenyl--(CH.sub.2).sub.r H (II)CH.sub.2 .dbd.C(X)--COO--R.sub.

Abstract: An active energy ray-curable resin composition comprises:(i) a linear polymer having a glass transition temperature at least equal to 50.degree. C. and a weight-average molecular weight of at least about 3.0.times.10.sup.4 ; and(ii) a resin obtained by esterifying, with an unsaturated carboxylic acid, a part of epoxy groups present in an epoxy resin comprising at least one compound having at least two epoxy groups in a molecule.

Abstract: An object of the present invention is to provide an ink, and ink jet recording method and apparatus using the ink which has excellent dispersion stability, discharge stability and recovery properties, and which can be kept in the weak alkali region even if it contains carbon black with low pH, which is generally considered to be difficult to handle and which can obtain a high-density image. The ink contains acid carbon black having a volatile content within the range 3.5 to 8% by weight, and a water-soluble resin having a weight average molecular weight within the range of 3,000 to 30,000, both of which are dissolved in an aqueous liquid medium, and a compound represented by the following formula (I), wherein the ratio by weight between the acid carbon black and the water-soluble resin is within the range of 3:1 to 10:1.R.sub.1 R.sub.2 NCONHCH.sub.2 CH.sub.2 OH (I)wherein R.sub.1 and R.sub.2 each is hydrogen or C.sub.n H.sub.2n OH, n is 2 or 3, with the proviso that R.sub.1 and R.sub.

Abstract: 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,K.sub.1 represents independently a radical of the formula ##STR2## K.sub.2 represents a radical of the formula ##STR3## R.sub.1 presents independently a radical of the formula ##STR4## wherein R.sub.3 is independently H-- or CH.sub.3 --, andR.sub.2 represents independently a radical of the formulaCH.sub.2 .dbd.CHCOO--, or CH.sub.2 .dbd.C(CH.sub.3)COO--.

Abstract: The invention provides a water-based dispersion ink for bubble jet system which contains at least water, a water-soluble organic solvent, a disperse dye or pigment, a surfactant, and/or an alkali-soluble, water-soluble polymer having a carboxylic acid value, wherein the surfactant is a polyoxyethylene alkyl ether or a polyoxyethylene alkylphenyl ether having an anionic group, selected from phosphoric acid and carboxylic acid, at the ethylene oxide terminal and also having HLB equal to or more than 10.

Abstract: A high molecular weight compound having a number average molecular weight of 5,000 to 30,000 formed from a styrenic or acrylic monomer chain and a rubber chain which are attached as block or graft polymers. A photopolymerizable resin composition includes a copolymer having a number average molecular weight of 5,000 to 30,000. The copolymer has a styrenic or acrylic monomer chain and a rubber chain attached in block or graft form.

Abstract: An ink for ink-jet recording is provided which contains a coloring material and an aqueous liquid medium for solving or dispersing the coloring material, the liquid medium having a lower critical consolute temperature (Tc) to cause phase separation at a temperature in the range of from 40.degree. to 100.degree. C. Ink-jet recording method and an ink-jet recording apparatus employing the above ink are also provided.

Abstract: An active energy ray-curing resin composition comprises a graft copolymerized polymer and at least one of a monomer having an ethylenically unsaturated bond and a partially esterified epoxy resin.

Abstract: A process is disclosed for producing a liquid jet recording head comprising applying an active energy-curing resin composition onto at least a part of a surface of a first member for forming a wall of the liquid path; exposing the applied active energy-ray-curing resin to an active energy ray selected from the group consisting of an ultraviolet-ray having an intensity of 1 mW/cm.sup.2 to 100 mW/cm.sup.2 and an electron beam having an intensity of 0.5M Rad to 20M Rad; and providing a second member on the exposed active energy-ray-curing resin composition.