Back to results
US 2019/0161634 A1Published application
Nonaqueous ink-jet magenta ink composition
AssigneeSakata Inx Corporation
InventorsJun KINJOH, Okinori NAKASHIMA, Yoshiyuki AOKI, Ryohei MIYAKE
Life of this patent
Estimating the term…
Abstract
A non-aqueous magenta ink composition for ink jet printing comprising a pigment, a pigment dispersant, a binder resin and an organic solvent, wherein the pigment comprises C.I. Pigment Red 254 and a red pigment having a quinacridone skeleton, and wherein a total amount of the C.I. Pigment Red 254 and the red pigment having a quinacridone skeleton is not less than 50% by mass in the pigment.
Claims8
1:
- A non-aqueous magenta ink composition for ink jet printing comprising a pigment, a pigment dispersant, a binder resin and an organic solvent,
- wherein the pigment comprises C.I. Pigment Red 254 and a red pigment having a quinacridone skeleton, and
- wherein a total amount of the C.I. Pigment Red 254 and the red pigment having a quinacridone skeleton is not less than 50% by mass in the pigment.
2:
- The non-aqueous magenta ink composition for ink jet printing of claim 1, wherein a compounding ratio of the C.I. Pigment Red 254 to the red pigment having a quinacridone skeleton is 8:2 to 2:8.
3:
- The non-aqueous magenta ink composition for ink jet printing of claim 1, wherein the compounding ratio of the C.I. Pigment Red 254 to the red pigment having a quinacridone skeleton is 4:6 to 6:4.
4:
- The non-aqueous magenta ink composition for ink jet printing of claim 1, wherein the pigment having a quinacridone skeleton is at least one selected from C.I. Pigment Violet 19, C.I. Pigment Red 122 and C.I. Pigment Red 202.
5:
- The non-aqueous magenta ink composition for ink jet printing of claim 1, wherein the pigment having a quinacridone skeleton is C.I. Pigment Red 122.
6:
- The non-aqueous magenta ink composition for ink jet printing of claim 1, wherein the binder resin comprises at least either of a vinyl polymer and an acrylic resin, and
- the vinyl polymer comprises at least one selected from the group consisting of a vinyl chloride polymer, a vinyl chloride-vinyl acetate copolymer and an ethylene-vinyl acetate copolymer.
7:
- The non-aqueous magenta ink composition for ink jet printing of claim 1, wherein the organic solvent comprises alkylene glycol dialkyl ether.
8:
- The non-aqueous magenta ink composition for ink jet printing of claim 1, comprising the organic solvent comprising at least one selected from the group consisting of a cyclic ester compound, (poly)propylene glycol monoalkyl ether and (poly)propylene glycol monoalkyl ether monoalkyl ester in a total amount of 1 to 30% by mass.