| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily recognize the mounting of a prescribed ink cartridge filled with an ink of a prescribed coloring agent composition to an inkjet recording apparatus. <P>SOLUTION: The ink for inkjet recording contains the first coloring agent for color development and the second coloring material for detection. The first coloring agent is a pigment. The maximum absorption peak wavelength of the first coloring agent is different from the detector absorption peak wavelength of the second coloring agent. The absorbance (b) of the second coloring agent at the detector absorption peak wavelength is ≥1.2 times the baseline absorbance (c) of the second coloring agent at the detector absorption peak wavelength. The color difference (ΔE) between the ink for inkjet recording and an ink prepared by removing the second coloring material of the ink is ≤3. The absorbance (b) of the second coloring agent at the detector absorption peak wavelength is 1-10 in terms of the measurement optical path length of 1 mm. <P>COPYRIGHT: (C)2008,JPO&INPIT |
