Patent ID: 7611572
Filing Date: 2009-11-03
Classification: C09B,G02B

Abstract:
1. A pixel-forming colorant composition comprising at least one green colorant selected from the group consisting of the following green pigment derivatives (A) and (B): (A) a green pigment derivative obtained by introducing at least one sulfone group in a copper phthalocyanine green pigment obtained by reacting at least one of a phthalic acid substituted on average with from 3.5 to 4.0 bromine atoms and a derivative thereof with a copper salt, substituted on average with from 14 to 16 bromine atoms, and substituted with no chlorine atom; (B) a green pigment derivative obtained by introducing at least one sulfone group in a copper phthalocyanine green pigment obtained by reacting a mixture, which comprises at least one of a phthalic acid having at least one bromine atom and a derivative thereof and at least one of a phthalic acid having at least one chlorine atom and a derivative thereof, with a copper salt, substituted on average with not less than 12 but less than 16 bromine atoms, and substituted on average with not more than 4 but more than 0 chlorine atom(s).