Abstract: Disclosed herein is an ink-jet printing process using an ink-jet printing cloth wherein the ink-jet printing cloth is composed mainly of nylon fibers, wherein the cloth has a water content of 10 to 110%, and comprises nylon yarn having an average thickness of 20 to 100 deniers composed of nylon fibers having an average thickness of 1 to 10 deniers.

Abstract: Disclosed herein is an ink-jet ink comprising a recording agent and a liquid medium dissolving and/or dispersing the recording agent therein, wherein the ink contains phytic acid and/or a salt thereof.

Abstract: An ink-jet printing cloth is disclosed in which a selected type of polyethylene oxide is incorporated in specified amounts. The polyethylene oxide has a larger viscosity average molecular weight of from 100,000 to 3,000,000 and acts to pretreat a starting cloth material so as to be adequate for ink-jet printing. The ink-jet printing cloth is highly capable of providing images of great color depth with sufficient brightness and sharpness but freedom from an objectionable bleeding. Also disclosed are a textile printing method using that printing cloth and a print resulting from this method.

Abstract: Disclosed herein is an ink for ink-jet printing comprising a disperse dye in an amount of from 0.1 to 15% by weight, a compound that disperses said disperse dye, a water-soluble organic solvent, bishydroxyethylsulfone and water, wherein said disperse dye has an average particle diameter in a range of from 150 to 400 nm, and dye particles having a particle diameter of not more than 200 nm occupy 85% by weight in a particle diameter distribution, and dye particles having a particle diameter of not less than 1,000 nm are substantially not contained.

Abstract: Disclosed herein is an ink-jet printing cloth which can be dyed with inks containing a reactive dye and is composed mainly of cellulose fiber, wherein the cloth contains 0.1 to 50% by weight of a cationic substance, 0.01 to 5% by weight of an alkaline substance and 0.01 to 20% by weight of the ammonium salt of a polyvalent acid, the proportions of said cationic and alkaline substances and said ammonium salt being based on the dry weight of the cloth.

Abstract: Provided is an ink jet printing method for printing inks of at least two colors on a cloth by an ink jet system which comprises at least three steps of:(a) the step of printing, on the cloth, the inks of at least two colors of a black ink and an another ink of at least one color selected from the group consisting of yellow, orange, red, magenta, blue and cyan so that the inks may at least partially overlap,(b) the step of thermally treating the cloth printed with the inks, and(c) the step of washing the thermally treated cloth,said cloth comprising a polyamide fiber,said black ink containing, as a dyestuff, at least one selected from the group consisting ofC. I. Acid Black 24, 26, 52, 52:1, 109, 155, 172 and 222,C. I. Direct Black 19, 62 and 113, and a dyestuff represented by the formula (1) ##STR1## wherein M is an alkaline metal, ammonium or an amine, or the formula (2) ##STR2## wherein X is a hydrogen atom, a lower alkyl group or a phenyl group which may be substituted by an SO.sub.

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: Disclosed herein is a printing process in which at least three inks are applied to a cloth according to an ink-jet system to conduct printing, which comprises at least three steps of:(a) applying at least two of the inks to the cloth in such a manner that at least parts of the two inks overlap each other;(b) subjecting the cloth, to which the inks have been applied, to a heat treatment; and(c) washing the heat-treated cloth,wherein the cloth is a cloth comprising fibers dyeable with disperse dyes, each and of the inks comprises a specified coloring matter, a compound for dispersing the coloring matter and an aqueous liquid medium.

Abstract: An ink jet printing method includes supplying at least two types of inks on a cloth such that the two types of inks overlap, wherein the cloth contains fibers which can be dyed with disperse dye, the two types of inks at least contain pigments, a compound for dispersing the pigments and an aqueous liquid medium, and the pigments are selected from a specific group of pigments.

Abstract: Disclosed herein is an ink-jet textile printing ink comprising at least a reactive dye and water, wherein the ink contains a hydrolyzate of the reactive dye in an amount of 1% to 50% by weight based on the weight of the reactive dye.

Abstract: An ink-jet textile printing ink comprises 5 to 30% by weight of a reactive dye having a vinylsulfone group and/or a monochlorotriazine group and an aqueous liquid medium, wherein the liquid medium contains at least 10 to 2000 ppm of phosphate ion (PO.sub.4.sup.3-).

Abstract: Disclosed herein is an ink comprising a coloring material and a liquid medium dissolving or dispersing the coloring material therein, wherein the ink comprises a compound represented by the general formula ##STR1## wherein R denotes H or CH.sub.3, n is an integer of 1 to 3, m is an integer of 1 to 3, and n+m is within a range of from 1 to 4, or bis(2-hydroxyethyl)sulfone.

Abstract: An ink jet printing method for effecting printing on a print medium such as a sheet of cloth by applying a jet of an ink to the print medium. The print medium is formed by preparing a sheet of cloth containing a cationic substance, preparing a backing sheet having a layer of an adhesive agent, and bonding the sheet of cloth to the adhesive surface of the backing sheet. After the jet of ink is applied to the print medium, the sheet of cloth is peeled off from the backing sheet and the freed sheet of cloth is rinsed with rinsing water containing a cation blocking agent, followed by drying.

Abstract: Disclosed herein is an ink-jet printing process comprising at least the steps of:(a) successively applying, as ink droplets, at least two inks of different colors to a cloth to form a color-mixed portion;(b) subjecting the cloth to a heat treatment to fix dyes contained in the inks to the cloth; and(c) washing the cloth to remove unfixed dyes from the cloth,wherein the inks comprise water, an organic solvent and individual reactive dyes different from each other in reaction rate, and the volume of a droplet of the ink containing a slower-reacting dye is made smaller upon the application of the inks.

Abstract: An ink tank having an ink storing portion encases an ink-absorbent member for holding ink. The ink-absorbent member comprises a porous material having therein compressed open cells. The compression ratio r.sub.1 of an apparent volume V.sub.1 before compression to an apparent volume V.sub.2 after compression (r.sub.1 =V.sub.1 /V.sub.2) and the cell number p represented by number of cells per inch in the state of V.sub.1 satisfy the relation (I) below, and p being not more than 60.100 [inch.sup.-1 ].ltoreq.r.sub.1 .multidot.p.ltoreq.200 [inch.sup.

Abstract: A process for producing a gel fiber comprises a step (N) of spinning a solution containing at least one polymer having at least one monomer unit as a constituent component for a gel to solidify the solution into a fiber, and step (M) of effecting crosslinking of the fiber to form a gel which can be swelled or shrunk reversibly by a thermal action in the presence of a liquid.

Abstract: An optical device is provided which comprises a liquid layer containing a liquid-absorbable and releasable polymer that absorbs and releases a liquid under thermal action.

Abstract: A medium for image formation which comprises a monomolecular film or monomolecular built-up film of a metal chelate compound and a process for image formation which comprises (1) manipulating the adsorption of a gas on a metal chelate compound and the desorption of the gas therefrom or (2) reducing metal ions in molecules of a metal chelate compound.

Abstract: A biocatalyst such as an enzyme or microbe is immobilized in a polymer gel having a phase transition temperature such that it is capable of reversibly swelling and shrinking by a change in temperature. By lowering the temperature, the polymer gel is caused to swell and a biocatalyst is absorbed therein and by raising the temperature, the polymer gel is caused to shrink and immobilize the biocatalyst. The biocatalyst may then be released by cooling the polymer to cause it to swell. Only a portion of the polymer gel may be subjected to temperature change to immobilize the biocatalyst only in a desired portion.

Abstract: A recording medium is provided which comprises a recording layer comprising at least one set of image-forming units containing a region holding a photosensitive protein and a color-developing means capable of developing a color according to a change in the hydrogen ion concentration in the region. Each of said image-forming units within the same set having a photosensitive protein sensitive to a different wavelength.