Yellow ink composition, ink set, ink cartridge, inkjet recording method, and recorded matter
AssigneeSeiko Epson Corporation
InventorsKazuhiko Kitamura, Akihito Sao
Life of this patent
Estimating the term…
Abstract
A yellow ink composition, containing as a colorant at least one type of compound expressed by the following Formula I, and at least one type of compound expressed by the following Formula II: (where X1, X2, Y1, and Y2 are each a hydrogen atom or a cyano group, Z1 and Z2 are each a substituent having an aromatic ring, R1 and R2 are each an alkyl group, and M is a metal atom) (where R is a methoxy group or methyl group, and A is 1,5-disulfonaphtho-3-yl or 1,5,7-trisulfonaphtho-2-yl).
Claims15
A yellow ink composition, containing as a colorant at least one compound expressed by the following Formula I, and at least one compound expressed by the following Formula II:
- where X1, X2, Y1, and Y2 are each a hydrogen atom or a cyano group, Z1 and Z2 are each a substituent having an aromatic ring, R1 and R2 are each an alkyl group, and M is a metal atom;
- where R is a methoxy group or methyl group, and A is 1,5-disulfonaphtho-3-yl or 1,5,7-trisulfonaphtho-2-yl.
Dependencies are inferred from the claim text.