| 摘要 |
<p>PURPOSE:To provide a black ink for an ink jet printer, which has excellent water resistance, water repellency and aging stability and in which the contrast of a recorded image can be enhanced sufficiently, consisting of a mixture of specified dyes. CONSTITUTION:A mixture consisting of at least two members selected from among C. I. Direct Red 83, C. I. Direct Red 225, C. I. Direct Red 226, C. I. Direct Red 227, C. I. Acid Red 131 and C. I. Reactive Blue is used as the dye of a black ink for an ink jet printer. The resulting ink is a black ink which is low in brightness and is sufficiently black visually. Hence, there can be obtd. a black ink for an ink jet printer, in which no disturbance in printing is caused, good printing is made possible over a long period of time and color hardly disappears even if the print is immersed in water.</p> |
