| 摘要 |
[Problem to be solved] A non-aqueous ink, which has excellent pigment dispersion stability and can achieve reduction or elimination of print-through, thereby achieving high print density, is disclosed.;[Solution] The non-aqueous ink contains at least a pigment and an organic solvent, wherein the organic solvent contains a five-membered heterocyclic compound having a C═O bond in an amount of 50 mass % or more of the organic solvent, and the content of a polymer component in the ink is 20 mass % or less relative to the pigment. |
| 主权项 |
1. A non-aqueous ink comprising
at least a pigment and an organic solvent, and substantially containing no polymer component, wherein said pigment is at least one of an inorganic pigment selected from the group consisting of titanium oxide, colcothar, cobalt blue, ultramarine, iron blue, carbon black, calcium carbonate, kaolin, clay, barium sulfate, talc and/or silica, and/or an organic pigment selected from the group consisting of insoluble azo pigment, azo lake pigment, condensed azo pigment, condensed polycyclic pigment and/or copper phthalocyanine pigment; and wherein the organic solvent contains a five-membered heterocyclic compound having a C═O bond in an amount of 50 mass % or more of the organic solvent, and the heterocyclic compound is a carbonate compound. |
