Ink jet recording-targeted non-aqueous ink composition, ink set, and ink jet recording method

1. An ink jet recording-targeted non-aqueous ink composition comprising:

a pigment;

a polyvinyl chloride; and

a solvent represented by the formula 1,

wherein R 1 represents an alkyl group having one to eight carbon atoms, and R 2 and R 3 each represent any one of a methyl group and an ethyl group;

the pigment is at least one selected from the group consisting of C.I. pigment yellow 180, 185 and 155; and

the polyvinyl chloride and the solvent represented by the formula 1 are contained in a mass ratio that is in the range from 1:5 to 1:25.

2. The ink jet recording-targeted non-aqueous ink composition according to claim 1 , wherein R 1 in the formula 1 which represents the solvent is any one of a methyl group and an n-butyl group.

3. The ink jet recording-targeted non-aqueous ink composition according to claim 1 , wherein the solvent represented by the formula 1 is contained in an amount that is in the range from 2 to 50% by mass.

4. The ink jet recording-targeted non-aqueous ink composition according to claim 1 , wherein the polyvinyl chloride is contained in an amount that is in the range from 0.05 to 5% by mass.

5. An ink set which includes a plurality of ink jet recording-targeted non-aqueous ink compositions, the ink set comprising at least one ink jet recording-targeted non-aqueous ink composition according to claim 1 .

6. An ink jet recording method comprising:

ejecting a droplet of the ink jet recording-targeted non-aqueous ink composition according to claim 1 ; and

bringing the droplet into adhering onto a surface of a recording medium containing a vinyl chloride-based resin with the result that an image is recorded.

7. The ink composition of claim 1 , wherein the pigment includes a mixture of C.I. pigment yellow 180, 185 and 155.