Abstract: The fluorine-containing epoxy resin composition of the present invention comprises a fluorine-containing epoxy resin having in one molecule at least one perfluoroalkyl group having 6 to 12 carbon atoms and at least two alicyclic epoxy groups, and a cationic polymerization catalyst.

Abstract: A fluorine-containing epoxy resin composition comprising a fluorine-containing aromatic epoxy resin having in one molecule at least one perfluoroalkyl group having 6 to 12 carbon atoms and preferably at least two epoxy groups, a cationic polymerization catalyst, and optionally a compatibilizing agent having an epoxy group and a fluoromethyl group is coated on discharge openings of an ink jet recording head, followed by exposure to activation energy rays in a given pattern form to form cured coatings with a desired pattern so that the discharge openings can be endowed with ink repellency.

Abstract: A color ink jet recording method/apparatus is capable of reducing blurring of ink dots without reducing dot saturation, generating no difference in tones of secondary colors, and inviting no reduction of throughput, hence materializing an excellent performance of recording in high quality at high speed. A color image is formed by causing ink dots of plural colors to land in such a manner that each of the ink dots is essentially not superposed. The ink dots have the optical density of 1 or more and 1.5 or less. Thereby, overlapping between adjacent ink dots is lessened, and thus a high-quality color image having no difference in tones of secondary colors and a high saturation can be attained.

Abstract: An ink for ink-jet recording contains a coloring agent, a polymerizable oligomer, water, and a photopolymerization initiator having a solubility in water of 3 percent by weight or more. Another ink for ink-jet recording contains a coloring agent, a polymerizable oligomer having at least two acryloyl groups and a solubility in water of 10 percent by weight or more, a photopolymerization initiator, and water. The specified polymerizable oligomer or photopolymerization initiator reduces bleeding of the ink on recording media.

Abstract: Disclosed herein is a set of water-based pigment inks for ink-jet, comprising a black pigment ink and other pigment inks different in hue from the black pigment ink, which the pigment inks each comprise water, a water-soluble organic solvent and an aqueous pigment dispersion, wherein respective polymeric dispersants used in the black pigment ink and the other pigment inks different in hue from the black pigment ink are different in polarity from each other.

Abstract: An useful aqueous photocurable resin composition is provided. The aqueous photocurable resin composition of the present invention comprises at least water, a polymerizable material polymerizable with radical initiation and a water-soluble photopolymerization initiator which generates a radical with light, wherein the polymerizable material has at least two polymerizable functional groups and one anionic functional group.

Abstract: An ink for ink-jet recording contains a coloring agent, a polymerizable oligomer, water, and a photopolymerization initiator having a solubility in water of 3 percent by weight or more. Another ink for ink-jet recording contains a coloring agent, a polymerizable oligomer having at least two acryloyl groups and a solubility in water of 10 percent by weight or more, a photopolymerization initiator, and water. The specified polymerizable oligomer or photopolymerization initiator reduces bleeding of the ink on recording media.

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 to 100° C. Ink-jet recording method and an ink-jet recording apparatus employing the above ink are also provided.

Abstract: The fluorine-containing epoxy resin composition of the present invention comprises a fluorine-containing epoxy resin having in one molecule at least one perfluoroalkyl group having 6 to 12 carbon atoms and at least two alicyclic epoxy groups, and a cationic polymerization catalyst.

Abstract: Color ink jet recording method/apparatus capable of reducing blurring of ink dots without reducing dot saturation, generating no difference in tones of secondary colors, and inviting no reduction of throughput, hence materializing an excellent performance of recording in high quality at high speed. A color image is formed by causing ink dots of plural colors to land in such a manner that each of the ink dots is not essentially superposed. The ink dots have the optical density of 1 or more and 1.5 or less. Thereby, overlapping between adjacent ink dots is lessened, and thus a high-quality color image having no difference in tones of secondary colors and a high saturation can be attained.

Abstract: An adsorbent for ink jet use arranged in a position to be in contact with ink, having the higher capability of adsorption with respect to hydrophobic substance contained in ink than colorant therein. Then, an ink retaining container comprises an ink retaining portion for retaining ink to be supplied to an ink jet head, an ink supply opening which becomes the ink supply portion from the ink retaining portion to the head, an atmospheric communication opening for communicating the ink retaining portion with the air outside. This ink retaining container is provided with the above-mentioned adsorption member arranged in a position to be in contact with ink in it. With the adsorbent and the ink retaining container thus arranged, it is made possible to perform ink jet recording with excellent print characteristics by effectively removing the hydrophobic substance eluted form the ink absorbent in the ink retaining container.

Abstract: A resin composition comprising a fluorine-containing aliphatic epoxy resin having in one molecule at least one perfluoroalkyl group having 6 to 12 carbon atoms and at lest two epoxy groups, a cationic polymerization catalyst, and optionally a compatibilizing agent having an epoxy group and a fluoromethyl group is applied to a discharge opening surface of an ink jet recording head, followed by irradiation with an activation energy ray in a given pattern to form a cured film in a desired pattern, so that the discharge opening surface is endowed with ink repellency.

Abstract: An adsorbent for ink jet use arranged in a position to be in contact with ink, having the higher capability of adsorption with respect to hydrophobic substance contained in ink than colorant therein. Then, an ink retaining container comprises an ink retaining portion for retaining ink to be supplied to an ink jet head, an ink supply opening which becomes the ink supply portion from the ink retaining portion to the head, an atmospheric communication opening for communicating the ink retaining portion with the air outside. This ink retaining container is provided with the above-mentioned adsorption member arranged in a position to be in contact with ink in it. With the adsorbent and the ink retaining container thus arranged, it is made possible to perform ink jet recording with excellent print characteristics by effectively removing the hydrophobic substance eluted form the ink absorbent in the ink retaining container.

Abstract: A novel polymer film is based on a principle totally different from that of the known liquid-repelling agents used with the known surface-modifying methods and can easily modify the properties of the surface of an article. More specifically, such a polymer film can be formed on the surface of an article by application to improve the liquid repellency of the surface of the article and maintain the liquid-repelling effect A novel polymeric compound can be used to form such a polymer film and a liquid-repellency treatment solution containing such a polymeric compound. There is also provided a method of modifying the surface of an article by means of such a liquid-repellency treatment solution and articles having a modified surface.

Abstract: The present invention relates to a water-soluble addition polymer which is produced from a carboxylated diol represented by the following general formula (I) and a polyisocyanate and has an acid value of 100 to 250, and an aqueous ink using this polymer as a dispersant for a disperse dye: 1

Abstract: The present invention relates to a water-soluble addition polymer which is produced from a carboxylated diol represented by the following general formula (I) and a polyisocyanate and has an acid value of 100 or 250, and an aqueous ink using this polymer as a dispersant for a disperse dye: wherein the residue A is an aromatic, alicyclic or aliphatic polybasic acid residue, and the residue B is a trivalent aliphatic alcohol residue.

Abstract: 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.

Abstract: Disclosed herein is a water-based ink for ink-jet recording, comprising a reaction product between a monosaccharide, disaccharide or polysaccharide and a reactive dye, wherein the monosaccharide has 1 to 3 primary amino groups, 1 to 3 secondary amino groups or 1 to 3 quaternary ammonium groups, the disaccharide has 1 to 3 primary amino groups, 1 to 3 secondary amino groups or 1 to 3 quaternary ammonium group, and the polysaccharide has a weight average moleculare weight of at most 4,000.

Abstract: An etching resist composition containing at least a polymeric compound having an acid value of not less than 35, a base, and water, and having a viscosity of 10 centipoises or below.

Abstract: A coating composition comprising cationic fine particles of a crosslinked resin, which have an average particle diameter ranging from 0.1 to 100 .mu.m and a water absorption capacity of at most 25 times by volume, and a binder resin; and a printing medium comprising a base material and an ink-receiving layer provided on the base material, wherein the ink-receiving layer contains cationic fine particles of a crosslinked resin, which have an average particle diameter ranging from 0.1 to 100 .mu.m and a water absorption capacity of at most 25 times by volume, and a binder resin.