| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide ink which comprises a fluorescent coloring material suffering from neither association nor flocculation and retaining solubility in the ink, has high ink stability, has no problem on wettability on a head surface, functions as a recorded image exhibiting high sharpness, uniformity and printing density, sufficient adhesion to paper and excellent fastness when adhered on paper by printing and is useful as a fluorescent ink applicable for judgment, and an inkjet recording method and an inkjet recording device using the fluorescent ink. <P>SOLUTION: The aqueous ink for judgment comprises an aqueous liquid medium, at least one water-soluble polar coloring material and at least one water-insoluble coloring material, where the water-soluble coloring material comprises a fluorescent coloring material which is excited in the ultraviolet region and emits fluorescence in the visible light region and the water-insoluble coloring material comprises a dispersible coloring material comprising a pigment and, adhered and/or fused on the surface thereof, a plurality of fine pseudoparticles of a chargeable resin which have the same polarity as that of the water-soluble coloring material. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
