Dye sets for inkjet imaging and ink sets using the same

An ink set for use as an inkjet ink, comprising:

• a cyan ink including a phthalocyanine compound represented by Formula I;
• a magenta ink including an azo dye represented by Formula III;
• and
• a yellow ink including a yellow dye containing 1,3-naphthalenedisulphonic acid, 7-[[4-[[4,6-bis-[(3-sulfoprop-1-yl)thio]-1,3,5-triazin-2-yl]amino]-3-methoxyphenyl]azo]tetrasodium salt represented by Formula V;
• the cyan ink, the magenta ink, and the yellow ink together exhibiting uniform fade when printed together to form an image;
• wherein Formula I is shown below:
• wherein
• M represents a hydrogen atom, a metal atom;
• or an oxide, hydroxide, or halide thereof;
• and Pc represents a phthalocyanine nucleus;
• wherein R1 and R2 each independently represents a substituent selected from the group consisting of —SOX1, —SO2X1, SO2NX2X3, —SO3X4;
• X1, X2, X3, and X4 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group;
• at least one of R1 or R2 has an ionic hydrophilic group as a substituent;
• and
• k and l each independently represents an integer ranging from 1 to 3, provided that k and l each independently is selected such that k+l equals 4;
• and wherein Formula III is shown below:
• wherein
• R21, R23, R25, R27, R29, and R31, are independently selected to be hydrogen atom or sulfonate group;
• R22 is selected to be hydrogen atom or nitro group;
• R26 and R28 are independently selected to be hydrogen atom or methyl group;
• R24 and R30 are independently selected to be a methyl or sulfonate group;
• and
• R32 is selected to be a methyl or methoxy group;
• and wherein Formula V is shown below: