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    • 9. 发明公开
    • INK COMPOSITION, INKJET PRINTING INK, AND INKJET PRINTING METHOD
    • TINTENZUSAMMENSETZUNG,TINTENZUSAMMENSETZUNG,TINTENFUR TINTENSTRAHLDRUCK UND TINTENSTRAHLDRUCKVERFAHREN
    • EP2687565A1
    • 2014-01-22
    • EP11861376.9
    • 2011-12-20
    • FUJIFILM Corporation
    • NAGATA YoshiakiTATEISHI KeiichiTANAKA Toshiharu
    • C09D11/00B41J2/01B41M5/00C09B31/153C09B31/20C09B31/28
    • C09D11/328C09B31/08C09B31/153C09B31/20C09B31/28C09B31/30C09B33/22C09B33/26C09B33/28C09B35/54C09B35/60C09B56/04
    • Provided are an ink composition having a fastness at a high level and having an excellent grey balance in a range from a high-concentration region to a low-concentration region, an ink for inkjet recording using the ink composition, and an inkjet recording method using the ink for inkjet recording using the ink for inkjet recording.
      An ink composition containing at least two kinds of water-soluble long-wavelength dyes whose absorption spectrum in an aqueous solvent has a maximum wavelength of 550 nm to 700 nm, in which at least one kind of the water-soluble long-wavelength dyes is a first water-soluble long-wavelength dye of an azo compound represented by the following Formula (1), at least one kind of the water-soluble long-wavelength dyes is a second water-soluble long-wavelength dye that is different from the first water-soluble long-wavelength dye, and the second water-soluble long-wavelength dye is a compound having two to four azo groups conjugated with each other per molecule, an ink for inkjet recording using the ink composition, and an inkjet recording method using the ink for inkjet recording using the ink for inkjet recording.
      Formula (1):

      (In Formula (1), A represents a substituted or unsubstituted aryl group or a substituted or unsubstituted nitrogen-containing 5-membered heterocyclic group. G represents a nitrogen atom or -C(R 2 )=. R 2 represents a hydrogen atom, a sulfo group, a carboxyl group, a substituted or unsubstituted carbamoyl group or a cyano group. Y 2 , Y 3 and Y 4 each independently represent a hydrogen atom or a monovalent substituent. Y 2 , Y 3 and Y 4 may be bound with each other to form a ring. All of Y 2 , Y 3 and Y 4 do not represent a hydrogen atom at the same time. M's each independently represent a hydrogen atom or a monovalent countercation.)
    • 提供了一种具有高水平牢度并且在从高浓度区域到低浓度区域的范围内具有优异的灰平衡的油墨组合物,使用该油墨组合物的喷墨记录用油墨和使用 用于喷墨记录用墨水的墨水。 一种含有至少两种水溶性长波长染料的油墨组合物,其在水性溶剂中的吸收光谱具有550nm至700nm的最大波长,其中至少一种水溶性长波长染料为 由下式(1)表示的偶氮化合物的第一种水溶性长波长染料,至少一种水溶性长波长染料是与第二种水溶性长波长染料不同的第二种水溶性长波长染料 第一水溶性长波长染料和第二水溶性长波长染料是具有每分子彼此共轭的2-4个偶氮基的化合物,使用该油墨组合物的喷墨记录用油墨和喷墨记录方法 使用用于喷墨记录的墨水的墨水用于喷墨记录。 式(1):(式(1)中,A表示取代或未取代的芳基或取代或未取代的含氮5元杂环基,G表示氮原子或-C(R 2)= R 2 表示氢原子,磺基,羧基,取代或未取代的氨基甲酰基或氰基,Y 2,Y 3和Y 4各自独立地表示氢原子或一价取代基,Y 2,Y 3和Y 4可以彼此结合形成环,Y 2,Y 3和Y 4中的全部不同时表示氢原子,M各自独立地表示氢原子或一价的相对基)。