Method of ink-jet textile printing

1. A method for ink-jet textile printing comprising the steps of:

(a) ejecting a pigment ink from a recording head onto a fabric, wherein the pigment ink contains at least water, a pigment and a polymer, wherein the polymer has a plurality of side chains in a hydrophilic main chain and is capable of cross-linking between the side chains by irradiation of active energy rays, the hydrophilic main chain of the polymer being a saponified polyvinyl acetate which exhibits a polymerization degree of not less than 200 and not more than 2,000, wherein the polymer contains a unit of formula (5), and

(b) forming an image by irradiation of active energy rays onto the ink ejected areas

in the formula, R 2 is methyl group or hydrogen, n is 1 or 2, X is —(CH 2 ) m —COO—, —CH 2 —COO—, or —O—, Y is an aromatic ring or a single bond, and m is an integer of 0-6.

2. The method for ink-jet textile printing of claim 1 , wherein the fabric is not conducted with pretreatment.

3. The method for ink-jet textile printing of claim 1 , wherein an amount of the unit of Formula (5) in the polymer, is not less than 0.3 mol % and not more than 4 mol %.

4. The method for ink-jet textile printing of claim 1 , wherein a contact angle of the pigment ink and the fabric is 40 to 100 degrees.

5. The method for ink-jet textile printing of claim 1 , wherein the pigment ink further comprises a photopolymerization initiator in an amount of not less than 0.1 weight % and not more than 1.0 weight % based on the total ink weight.

6. The method for ink-let textile printing of claim 1 , wherein ultraviolet rays are irradiated after the pigment ink is adhered onto the fabric.

7. The method for ink-jet textile printing of claim 1 , wherein a heat-fixing process is conducted after the pigment ink is adhered onto the fabric.