| abstract |
(57) [Abstract] (with correction) [Problem] A colored fine particle dispersion having a small particle diameter of a colored fine particle and excellent in dispersion stability, and a color dependency when printed on arbitrary paper with little dependence on paper. Provided is an ink jet recording ink having excellent color tone, water resistance and light resistance. SOLUTION: A colored fine particle dispersion in which a block copolymer composed of a hydrophobic segment and a hydrophilic segment and an oil-soluble dye is a dye represented by the general formula I, and an ink jet recording ink containing the same. (Q is an atomic group necessary to have absorption in a visible region and / or a near infrared region, A is -NR 4 R 5 or a hydroxy group, and R 4 and R 5 are independently hydrogen, alkyl, aryl or hetero A ring group, B 1 represents ＝ C (R 6 )-or ＮN- The, B 2 is -C (R 7) = or -N = a, R 2, R 3 , R 6 and R 7 independently represent hydrogen or a substituent, R 2 and R 3 , R 3 and R 4 , R 4 and R 5 , R 5 and R 6 And R 6 and R 7 may combine with each other to form a ring. ) |