INKJET INK, INKJET RECORDING METHOD, INK SET, INK MEDIUM SET, AND PRINT MEDIUM

• Main Authors: MATSUMURA AIKO, KAJI YUKI, MISAWA SHUNTA, YOSHIDA KEISHIRO
• Format: Patent
• Language: English; Japanese
• Published: 08.06.2023
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide an inkjet ink that exhibits excellent wettability even on a non-ink absorbent medium, while being excellent in drying properties.SOLUTION: An ink includes a coloring agent, an organic compound other than the coloring agent and water. The organic compound contains, for instance, 1,5-pentanediol and a compound d in which an R1 in a formula (1) is a hydrocarbon group of C5-C6. If a content of the 1,5-pentanediol with regard to 100 pts.mass of the ink is (e) pts.mass and an entire content of the compound d is (d) pts.mass, the (d) is larger than 0.3, and a relation of 1<(e)/(d)≤50 is satisfied.SELECTED DRAWING: None 【課題】インク非吸収性メディア上においても良好な濡れ性を示し、且つ、乾燥性にも優れたインクジェット用インクを提供する。【解決手段】本発明のインクは、着色剤、上記着色剤を除く有機化合物、及び水を含有する。上記有機化合物は、例えば、１，５－ペンタンジオール、及び下記式（１）におけるＲ１がＣ５－Ｃ６の炭化水素基である化合物ｄを含み、インク１００質量部中における１，５－ペンタンジオールの含有量を（ｅ）質量部、化合物ｄの総含有量を（ｄ）質量部としたとき、（ｄ）が０．３より大きく、且つ、１＜（ｅ）／（ｄ）≦５０の関係を満たす。TIFF2023080084000025.tif29134【選択図】なし