The present invention relates to an inkjet ink composition comprising a liquid vehicle, a pigment, and a polymeric dispersant. In one embodiment, the pigment comprises a colorant having the formula A-(B)
x
or is a carbon black pigment and the polymeric dispersant comprises a polymeric group and at least one group having the formula -A′-(B)
y
(C)
z
, wherein A and A′ are organic chromophore groups. In a second embodiment, the polymeric dispersant comprises a polymeric group and an organic chromophore group capable of interacting with the pigment.
本发明涉及一种喷墨墨
水组合物,其包括液体载体、
颜料和聚合物分散剂。在一种实施例中,
颜料包括具有A-(B)x式的色料,或者是碳黑
颜料,聚合物分散剂包括聚合物基团和至少一个具有-A'-(B)y(C)z式的基团,其中A和A'是有机色团基团。在第二种实施例中,聚合物分散剂包括聚合物基团和能够与
颜料相互作用的有机色团基团。