A dispersion of a water-insoluble colorant containing: a medium containing water; fine particles of the water-insoluble colorant; and a polymer compound or a surfactant that includes at least one kind of electron-withdrawing group or group of atoms represented by any one of formulae (I) to (IV) as its hydrophilic part:
wherein at least one of X
1
and X
2
represents an electron-withdrawing linking group on the condition that when at least one of X
1
and X
2
is not the linking group, the at least one of X
1
and X
2
represents an electron-withdrawing substituent; R
1
represents a hydrogen atom or a substituent; and M represents a hydrogen atom or a metal atom.
一种
水不溶性
着色剂的分散体,包括:含
水介质;
水不溶性
着色剂的细小颗粒;以及
聚合物化合物或
表面活性剂,其包含至少一种电子吸引基团或由式(I)至(IV)中的任何一种原子团表示的原子团作为其亲
水部分:其中X1和X2中至少一个表示电子吸引连接基团,条件是当X1和X2中至少一个不是连接基团时,X1和X2中的至少一个表示电子吸引取代基;R1表示
氢原子或取代基;M表示
氢原子或
金属原子。