MAGENTA INK FOR INKJET

• Main Authors: YODA JUN, SUZUKI YOSHITO, SUGIHARA MASAHIRO, SHIROUCHI KAZUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 11.07.2019
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a Magenta ink for inkjet having no unevenness of density nor white void, capable of providing high gloss and clear images, excellent in discharge stability after long time standby, and capable of providing excellent dryness even at high speed printing in inkjet printing on a hardly absorbable substrate, and an ink set capable of achieving high color reproductivity by suppressing color mixture bleeding.SOLUTION: There are provided a Magenta ink for inkjet containing an azo pigment, a water soluble organic solvent (A-1) having specific static surface tension and an HLB value, and one or more hydroxyl group, and a surfactant (B-1) having a specific HLB value, and an ink set containing the Magenta ink for inkjet.SELECTED DRAWING: None 【課題】難吸収性基材に対するインクジェット印刷において、濃淡ムラや白抜けがなく、高光沢かつ鮮明な画像が得られ、長期待機させた後の吐出安定性に優れ、高速印刷であっても優れた乾燥性を得ることが可能な、インクジェット用マゼンタインキ、及び、混色滲みを抑制し高い色再現性を実現できるインキセットを提供する。【解決手段】アゾ顔料と、特定の静的表面張力とＨＬＢ値を有し、かつ水酸基を１個以上有する水溶性有機溶剤（Ａ−１）と、特定のＨＬＢ値を有する界面活性剤（Ｂ−１）とを含むインクジェット用マゼンタインキ、及び、前記インクジェット用マゼンタインキを含むインキセット。【選択図】なし