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.

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.

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.

Abstract: An active energy ray-curing resin composition comprises (i) a graft copolymerized polymer, (iii) an epoxy resin comprising at least one compound having one or more epoxy groups in the molecule and (iv) a polymerization initiator capable of generating a Lewis acid by irradiation of an active energy ray.

Abstract: An active energy ray-curing resin composition of (a) butadiene polymer having a number-average molecular weight of not less than about 10,000, and (b) a liquid polybutadiene having in the molecule 1.5 or more, on the average, of at least one of acryloyl group and methacryloyl group.

Abstract: A photopolymerizable adhesive comprises (A) an acrylic resin having groups represented by the formulae: --COOH, --OH and --NHCH.sub.2 OR (wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms), a number average molecular weight of from 3,000 to 200,000 and a glass transition temperature of at least 70.degree. C., (B) a photopolymerizable oligomer containing at least one member selected from the group consisting of (a) an acrylate or a methacrylate of a novolak epoxy resin, (b) an acrylate or a methacrylate of a bisphenol epoxy resin and (c) an urethane acrylate of aromatic alcohol or cycloaliphatic alcohol, and (C) a photoinitiator capable of discharging radicals with the action of activation energy.

Abstract: An active energy ray-curing resin composition comprises:(i) a linear polymer having a glass transition temperature of 50.degree. C. or higher and a weight average molecular weight of about 3.0.times.10.sup.4 or higher;(ii) a monomer having an ethylenically unsaturated bond;(iii) an epoxy resin comprising at least one compound having one or more epoxy groups in the molecule; and(iv) a polymerization initiator capable of generating a Lewis acid by irradiation with an active energy ray.

Abstract: An adhesive for use in bonding finely processed parts such as parts of ink jet recording head has a composition which essentially contains: (A) a vinylester compound of an urethanated epoxy resin; (B) a partial vinylester compound of a multi-functional epoxy resin; (C) an acrylic reactive diluent; (D) a photopolymerization initiator; and(E) an epoxy cure agent. This adhesive is curable by ultraviolet irradiation or by application of heat, and does not flow or spread into areas where bonding is not necessary, so that finely processed parts are bonded with a high degree of precision of the bonding pattern.

Abstract: Disclosed herein is an ink comprising at least a coloring material and a liquid medium dissolving or dispersing the coloring material therein, wherein the viscosity of the ink reaches a maximum peak in a pH range of from 4 to 10.

Abstract: Provided is an ink containing a recording agent and a liquid medium capable of dissolving or dispersing the recording agent, wherein said ink comprises a compound represented by the formulaR.sub.1 R.sub.2 NCONHCH.sub.2 CH.sub.2 OHwherein R.sub.1 and R.sub.2 each represent hydrogen or C.sub.n H.sub.2n OH, where n is 2 or 3, provided that R.sub.1 and R.sub.2 are not hydrogen at the same time, and has a pH of not less than 7 to less than 10.

Abstract: A recording liquid including a pigment, a water-soluble resin, a water-soluble organic solvent, and water, wherein, of the water-soluble resin, water-soluble resin that is in the state of being dissolved in the recording liquid without being absorbed on the pigment is contained in an amount of not more than 2% by weight; and the water-soluble organic solvent comprises at least one of a polyhydric alcohol and an alkyl ether thereof, and an aliphatic monohydric alcohol. This recording liquid is used in an ink-jet recording method, recording unit, ink cartridge, and ink-jet recording apparatus.

Abstract: An ink comprising a composition containing a pigment, a water-soluble resin and a liquid medium, wherein the pigment and the water-soluble resin are contained in said composition in a proportion of the weight Wr of the latter to the weight Wp of the former, Wr/Wp, that satisfies the expression (I) ##EQU1## wherein DAR denotes a value represented by the expression (II) ##EQU2##

Abstract: A recording liquid including a pigment, a water-soluble resin, a water-soluble organic solvent, and water, wherein, of the water-soluble resin, water-soluble resin that is in the state of being dissolved in the recording liquid without being absorbed on the pigment is contained in an amount of not more than 2% by weight; and the water-soluble organic solvent comprises at least one of a polyhydric alcohol and an alkyl ether thereof, and an aliphatic monohydric alcohol. This recording liquid is used in an ink-jet recording method, recording unit, ink cartridge, and ink-jet recording apparatus.

Abstract: A material for a liquid ejection ink-jet recording apparatus that is contactable with a recording liquid wherein the material is formed by a cured substance made from cyclic aliphatic epoxy resin and acid anhydride. The material is used in producing a liquid ejection recording head. The head is included in a liquid recording apparatus.

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 the support.

Abstract: A liquid jet recording head comprising a cured product of an active energy-ray-curing resin composition as at least a part of its constitution, said composition comprises:(A) a graft copolymerized polymer having a number average molecular weight of 5,000 or more and a weight average molecular weight of 50,000 or less which comprises a trunk chain composed mainly of structural units derived from at least one monomer (hereinafter referred to as "monomer (a)") selected from the group consisting of alkyl methacrylates, acrylonitrile and stylene and has graft chains having structural units derived from at least one monomer (hereinafter referred to as "Monomer (b)") selected from the group consisting of the monomers represented by the following formula x and other monomers presented by the formula y: ##STR1## (B) a linear polymer having a number average molecular weight of 50,000 or more and a weight average molecular weight of 350,000 or less and having a glass transition temperature of 60.degree. C.

Abstract: An improved active energy ray-curing resin composition comprising (i) a graft copolymerized polymer having a number average molecular weight of 5,000 or more and a weight average molecular weight of 50,000 or less: (ii) a linear polymer having a number average molecular weight of 5,000 or more and a weight average molecular weight of 350,000 or less and having a glass transition temperature of 60.degree. C. or more: (iii) an esterified polyurethane obtained from oligoesterdiol or from oligoesterdiol and dihydric isocyanate which has a molecular chain terminal end being esterificated with acrylic acid: and (iv) a photopolymerization initiator.The resin composition can be desirably cured with an active energy ray such as ultraviolet ray or electron beam and it is capable of being laminated in a desired pattern on a copper-coated laminate for use as a printed board or on a plate of metal, glass, ceramics or plastic.

Abstract: An improved active energy ray-curing resin composition comprising (i) a graft copolymerized polymer having a number average molecular weight of 5,000 or more and a weight average molecular weight of 50,000 or less; (ii) a linear polymer having a number average molecular weight of 5,000 or more and a weight average molecular weight of 350,000 or less and having a glass transition temperature of 60.degree. C. or more: (iii) an epoxy resin containing at least one compound having one or more epoxy groups in one molecule: and (iv) a polymerization initiator capable of generating a Lewis acid by irradiation of an active energy ray. The resin composition can be desirably cured with an active energy ray such as ultraviolet ray or electron beam and it is capable of being laminated in a desired pattern on a copper-coated laminate for use as a printed board or on a plate of metal, glass, ceramics or plastic.

Abstract: An improved active energy ray-curing resin composition comprising (i) a graft copolymerized polymer with a trunk chain containing dicyclopentenyl derivative group which has a number average molecular weight of 5,000 or more and a weight average molecular weight of 50,000 or less: (ii) a linear polymer having a number average molecular weight of 5,000 or more and a weight average molecular weight of 350,000 or less and having a glass transition temperature of 60.degree. C. or more: (iii) a monomer having an ethylenically unsaturated bond: and (iv) a photopolymerization initiator capable of generating free radicals with irradiation of an active energy ray. The resin composition can be desirably cured with an active energy ray such as ultraviolet ray or electron beam and it is capable of being laminated in a desired pattern on a copper-coated laminate for use as a printed board or on a plate of metal, glass, ceramics or plastic.

Abstract: An improved active energy ray-curing resin composition comprising (i) a graft copolymerized polymer having a number average molecular weight of 5,000 or more and a weight average molecular weight of 50,000 or less: (ii) a linear polymer having a number average molecular weight of 5,000 or more and a weight average molecular weight of 350,000 or less and having a glass transition temperature of 60.degree. C. or more: (iii) a half-esterificated epoxy resin: (iv) a monomer having an ethylenically unsaturated bond: and (v) a polymerization initiator capable of generating a Lewis acid by irradiation of an active energy ray.The resin composition can be desirably cured with an active energy ray such as ultraviolet ray or electron beam and it is capable of being laminated in a desired pattern on a copper-coated laminate for use as a printed board or on a plate of metal, glass, ceramics or plastic.