An azomethine dye represented by the following Formula 1:
wherein Y represents a substituent of 0.2≦σp≦0.9, Z
1
and Z
2
each represent —CR
1
═, where R
1
represents a hydrogen atom or a substituent, or —N═, L represents the group represented by the following Formula 1
a
, X represents an unsubstituted or substituted di-alkylamino group, R represents an unsubstituted or substituted alkyl group, and n represents an integer more than 0.
wherein B represents a group of non-metallic atoms which are necessary to form a heterocyclic ring.
下式 1 所代表的偶氮甲基
染料:
其中 Y 代表 0.2≦σp≦0.9 的取代基,Z
1
和 Z
2
分别代表-CR
1
═,其中 R
1
代表氢原子或取代基,或 -N═, L 代表下式 1 所代表的基团
a
X 代表未取代或取代的二烷基
氨基,R 代表未取代或取代的烷基,n 代表大于 0 的整数。
其中 B 代表形成杂环所必需的非
金属原子团。