Patent number: 7301011
Abstract: An azo compound and tautomer thereof represented by the following formula (1) or the formula (2): wherein R1, R2, R5, R7, R8, R10, R11, R14, R16, R17, R18, and R19 each independently represents a hydrogen atom, alkyl group, aryl group, alkoxy group, aryloxy group, alkylsulfonyl group, arylsulfonyl group, alkylthio group, arylthio group, cyano group, acyl group, carbamoyl group, amino group, nitro group, or halogen atom; R3, R4, R6, R9, R12, R13, R15, and R20 each independently represents a hydrogen atom, alkyl group, or aryl group; R1 and R2, R2 and R3, R3 and R4, R6 and R7, R7 and R8, R8 and R9, R10 and R11, R11 and R12, R12 and R13, R15 and R16, R16 and R17, R17 and R18, R18 and R19, and R19 and R20 may join to each other to form a ring structure, and A? represents a counter anion.
Type:
Grant
Filed:
June 29, 2006
Date of Patent:
November 27, 2007
Assignee:
Fujifilm Corporation
Inventor:
Satoru Yamada