| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a recording fluid which can give a recording of good water resistance even to paper of any kind by nixing a pigment with a water-based resin, an organic colorant derivative, an anthraquinone derivative or an acridone derivative and water. SOLUTION: The organic colorant derivative, the anthraquinone derivative or the acridone derivative is represented by the formula: Q-[X-N(R<1> )-Y-R<2> ] (wherein Q is an organic colorant residue, an anthraquinone residue or an acridone residue; X is -SO2 -, -CO-, -CH2 or -CH2 NHCOCH2 -; R<1> is H, a 1-18C alkyl or -Y-R<2> (wherein R<2> is H or a 1-4C alkyl; and Y is moiety of an ethylene oxide polymer or an ethylene oxide/propylene oxide copolymer having an average molecular weight of 400-10,000; and n is 1-3). It is desirable to use a surfactant. The mixing ratio is such that the pigment, the aqueous resin and e.g. the organic colorant derivative account for 0.5-10 wt.%, based on the total recording fluid, 0.1-10 wt.% and 0.01-20 wt.%, respectively.</p> |
