Dye mixture for ink jet ink

Claim 2

An ink jet ink composition comprising water, a humectant and a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 23, Reactive Red 24, Reactive Red 31, Reactive Red 120, Reactive Red 180, Reactive Red 241, Acid Red 35, Acid Red 52, Acid Red 249, Acid Red 388, Direct Red 227 or CAS No. 153204-88-7.

Claim 3

The composition of claim 1 wherein said water-soluble, magenta anthrapyridone dye is a sulfonic acid or sulfonate derivative of a compound represented by the general formula: wherein: R 1 represents hydrogen, or a substituted or unsubstituted alkoxycarbonyl, carboxyl, benzoyl, alkyl, aryl, hetaryl, alkoxy or phenoxy group; R 2 represents hydrogen or a substituted or unsubstituted alkyl, alicyclic, aryl or hetaryl group; R 3 represents hydrogen, carboxyl, or a substituted or unsubstituted alkyl, alicyclic, aryl, hetaryl, alkoxy or phenoxy group; each X independently represents hydrogen, halogen, nitro, hydroxyl, carboxyl, or a substituted or unsubstituted alkyl, alicyclic, aryl, hetaryl, alkoxy, phenoxy, amino, amido, sulfonate, or sulfonamido group; and n represents 0, 1, 2 or 3.

Claim 4

The composition of claim 2 wherein R 1 is benzoyl.

Claim 5

The composition of claim 2 wherein R 2 is hydrogen.

Claim 6

The composition of claim 2 wherein R 3 is a sulfonated phenoxy group.

Claim 7

The composition of claim 2 wherein n is 1 and X is a sulfonate group.

Claim 8

The composition of claim 1 comprising a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 31.

Claim 9

The composition of claim 1 comprising a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 120.

Claim 10

The composition of claim 1 comprising a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 24.

Claim 11

The composition of claim 1 comprising a mixture of a water-soluble, magenta anthrapyridone dye and Acid Red 388.

Claim 12

The composition of claim 1 comprising a mixture of a water-soluble, magenta anthrapyridone dye and Direct Red 227.

Claim 13

The composition of claim 1 comprising a mixture of a water-soluble, magenta anthrapyridone dye and Acid Red 52.

Claim 14

The composition of claim 1 comprising a mixture of a water-soluble, magenta anthrapyridone dye and Acid Red 35.

Claim 15

The composition of claim 1 comprising a mixture of a water-soluble, magenta anthrapyridone dye and CAS No. 153204-88-7.

Claim 16

The composition of claim 1 wherein said humectant is a water-miscible organic solvent.

Claim 17

The composition of claim 1 wherein said humectant is diethylene glycol, glycerol, diethylene glycol monobutylether or triethylene glycol monobutylether or a combination thereof.

Claim 18

The composition of claim 1 wherein said dye mixture comprises about 0.2 to about 10% by weight of said ink jet ink composition.

Claim 19

The composition of claim 1 wherein said dye mixture comprises from about 70 to about 99% by weight of said water-soluble, magenta anthrapyridone dye.

Claim 20

The composition of claim 1 wherein said dye mixture comprises from about 80 to about 90% by weight of said water-soluble, magenta anthrapyridone dye.