Ink composition for ink-jet recording and method of ink-jet recording
First Claim
1. An ink composition for ink jet recording, comprising at least a pigment, a 1,2-alkanediol, glycerin, a polyhydric alcohol derivative and/or an acetylene glycol surfactant, a water-soluble organic solvent, and water,said pigment having been surface treated to render the pigment dispersible and/or dissolvable in water without any dispersant, said 1,2-alkanediol being at least one member selected from the group consisting of 1,2-butanediol, 1,2-pentanediol, and 1,2-hexanediol, said ink composition having a surface tension of not more than 40 mNm−
- 1 at 20°
C.
1 Assignment
0 Petitions
Accused Products
Abstract
An ink composition for ink jet recording is provided which comprises at least a pigment, a 1,2-alkanediol, glycerin, a polyhydric alcohol derivative and/or an acetylene glycol surfactant, a water-soluble organic solvent, and water, the pigment having been surface treated to render the pigment dispersible and/or dissolvable in water without any dispersant, the 1,2-alkanediol being at least one member selected from the group consisting of 1,2-butanediol, 1,2-pentanediol, and 1,2-hexanediol, the ink composition having a surface tension of not more than 40 mNm−1 at 20° C. This ink composition enables ink jet recording which can provide good print quality and can realize continuous printing.
-
Citations
25 Claims
-
1. An ink composition for ink jet recording, comprising at least a pigment, a 1,2-alkanediol, glycerin, a polyhydric alcohol derivative and/or an acetylene glycol surfactant, a water-soluble organic solvent, and water,
said pigment having been surface treated to render the pigment dispersible and/or dissolvable in water without any dispersant, said 1,2-alkanediol being at least one member selected from the group consisting of 1,2-butanediol, 1,2-pentanediol, and 1,2-hexanediol, said ink composition having a surface tension of not more than 40 mNm−
Specification