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    • 9. 发明授权
    • Aqueous ink
    • 水性油墨
    • US07192475B2
    • 2007-03-20
    • US11010368
    • 2004-12-14
    • Masaru TakasakiToshiki FujiwaraTomohiro Chino
    • Masaru TakasakiToshiki FujiwaraTomohiro Chino
    • C09D11/00C09D11/02
    • C09D11/32C09D11/328
    • An aqueous ink comprising at least two dyes each having at least one ionic hydrophilic group in a molecule thereof, wherein at least one of said at least two dyes includes an azo dye represented by formula (1): wherein A and B each independently represents a substituted or unsubstituted monovalent aromatic group; or a substituted or unsubstituted monovalent heterocyclic group; R1 represents a hydrogen atom; a substituted or unsubstituted aromatic group; or a substituted or unsubstituted heterocyclic group; and X represents —CR2═ or a nitrogen atom, and when X represents —CR2═, R2 represents a hydrogen atom or a substituent.
    • 一种水分油墨,其包含至少两种在其分子中具有至少一个离子性亲水基团的染料,其中所述至少两种染料中的至少一种包括由式(1)表示的偶氮染料:其中A和B各自独立地表示 取代或未取代的一价芳族基团; 或取代或未取代的一价杂环基; R 1表示氢原子; 取代或未取代的芳基; 或取代或未取代的杂环基; 并且X表示-CR 2 - 或氮原子,当X表示-CR 2 - 时,R 2表示氢原子或 取代基。
    • 10. 发明申请
    • Black ink for inkjet recording and inkjet recording method
    • 黑色墨水用于喷墨记录和喷墨记录方法
    • US20060044375A1
    • 2006-03-02
    • US10528772
    • 2003-07-01
    • Toshiki TaguchiTakashi OzawaToshiaki AonoYoshiharu YabukiTomohiro Chino
    • Toshiki TaguchiTakashi OzawaToshiaki AonoYoshiharu YabukiTomohiro Chino
    • G01D11/00
    • C09D11/328
    • An object of the present invention is to provide an inkjet recording ink ensuring excellent discharge stability even after aging of the ink and also exhibiting excellent weather resistance. This object of the present invention can be attained by a black ink for inkjet recording, comprising an aqueous medium containing a dye in which λmax of the absorption spectrum in an aqueous solution is in the region from 500 and 700 nm and the standardized half-value width thereof is 100 nm or more. The aqueous ink of the present invention is more enhanced in the discharge stability and weather resistance when the dye contained in the ink, particularly, the dye having the above-described spectral characteristics, is a dye having an oxidation potential of 1.0 V vs SCE or more, 2) a dye having a discoloration rate constant of 5.0×10−2 Hr−1 or less, 3) a dye where the maximum value/minimum value ratio of discoloration rate constants of three colors is 1.2 or less, 4) a dye represented by formula (1), 4) a dye containing a compound of formula (A), 5) a dye containing a high boiling point water-miscible organic solvent, 6) particularly a dye containing 20 mass % or more of a water-miscible organic solvent having a boiling point of 100° C. or more and 2 mass % or less of a compound of formula (A), and 7) a dye containing a high boiling point water-miscible solvent and a low boiling point water-miscible solvent. The inkjet recording ink of the present invention is an ink capable of ensuring pictorial quality with no loosening in the gradation of neutral gray even by visual evaluation.
    • 本发明的目的是提供即使在油墨老化之后也确保优异的喷射稳定性并且还具有优异的耐候性的喷墨记录油墨。 本发明的目的可以通过一种用于喷墨记录的黑色油墨来实现,该黑色油墨包括含有一种染料的水性介质,其中在水溶液中的吸收光谱的lambdamax在500和700nm的范围内,标准化的半值 其宽度为100nm以上。 当包含在油墨中的染料,特别是具有上述光谱特性的染料是具有1.0V的氧化电位的染料与SCE相比时,本发明的水性油墨的放电稳定性和耐候性更强, 更多,2)染色速率常数为5.0×10 -2 H -1以下的染料,3)染料,其中最大值/最小值比值变色 三种颜色的速率常数为1.2以下,4)由式(1)表示的染料,4)含有式(A)化合物的染料,5)含有高沸点水混溶性有机溶剂的染料6 )特别是含有20质量%以上的沸点为100℃以上且2质量%以下的水溶性有机溶剂的式(A)化合物的染料,以及7)含有 高沸点水溶性溶剂和低沸点水溶性溶剂。 本发明的喷墨记录油墨是即使通过目视评价也能够确保中性灰色的灰度等级而不会松动的画质。