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US 7,510,605 B2Granted
Dye ink, ink jet recording method, ink sheet, color toner and color filter
AssigneeFUJIFILM Corporation
InventorsToru Harada, Yoshiharu Yabuki, Takashi Ozawa, Keiichi Tateishi
Life of this patent
Estimating the term…
Abstract
To provide a dye which has a good hue, which can form an image showing a high fastness under various using conditions and environmental conditions, and which is particularly suited for an ink, the dye is represents by formula (1): wherein R1 and R2 each independently represents a monovalent group, Z represents a nitrogen atom or a carbon atom to which a hydrogen atom or a monovalent group is bonded, and M represents a hydrogen atom or a cation, provided that the dye has two azo groups.
Claims11
A dye represented by formula (2), (3) or (4):
- wherein R3 and R4 each independently represents a monovalent group, Ar1 and Ar2 each independently represents an aryl group or a hetero ring group, and M represents a hydrogen atom or a cation;
- wherein R5, R6,R7, and R8 each independently represents a monovalent group, Ar3 represents a divalent linking group, M represents a hydrogen atom or a cation;
- wherein R9 and R10 each independently represents a monovalent group, Ar4 and Ar5 each independently represents an aryl group or a hetero ring group, Ar6 represents a divalent linking group, and M represents a hydrogen atom or a cation.
Dependencies are inferred from the claim text.