A water-soluble complex dye capable of forming an image having light resistance, ozone resistance and high saturation; a water-based recording fluid, particularly an ink jet recording fluid, employing such a dye; an ink set employing such a recording fluid; and an ink jet recording method, are presented.
A water-soluble complex dye comprising an azo compound represented by the following formula (1) or its tautomer, and transition metal ions; a water-based recording fluid, particularly an ink jet recording fluid, containing such a dye; and an ink jet recording method employing such a recording fluid.
In the formula (1), A1 is a 5- to 7-membered hetero monocyclic group or a fused polycyclic group containing such a hetero monocyclic group and may have an optional substituent, but it represents a group which does not have a hydroxyl group at a position adjacent to the carbon bonded to the azo group; ring X1 represents a monocyclic hetero ring constituted by six atoms, bonded to the azo group and may have an optional substituent; and each of R1 and R2 which are independent of each other, is a hydrogen atom or a monovalent substituent.
本发明提出了一种能够形成具有耐光性、耐
臭氧性和高饱和度图像的
水溶性复合
染料;一种采用这种
染料的
水基记录液,特别是喷墨记录液;一种采用这种记录液的墨
水组;以及一种喷墨记录方法。
一种
水溶性络合
染料,由下式(1)或其同分异构体代表的偶氮化合物和过渡
金属离子组成;一种含有这种
染料的
水基记录液,特别是喷墨记录液;以及一种采用这种记录液的喷墨记录方法。
在式(1)中,A1 是 5 至 7 元杂单环基团或含有这种杂单环基团的融合多环基团,可具有任选取代基,但它代表的基团在与偶氮基团键合的碳相邻位置上没有羟基;环 X1 代表由六个原子构成的单环杂环,与偶氮基键合,可具有任选的取代基;以及 R1 和 R2 中的每一个彼此独立,是氢原子或单价取代基。