Inks for ink jet printing with reduced intercolor bleed

Compositions: coating or plastic – Coating or plastic compositions – Marking

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106 3143, 106 3147, 106 3158, 106 316, 106 3175, 106 3177, 106 3186, 106 3187, C09D 1102

Patent

active

060397934

ABSTRACT:
Disclosed is a set of inks for generating multicolored images which comprises (a) a first ink having a first color, said first ink comprising water, a colorant, and a monomeric zwitterionic compound, said first ink being substantially free of organic acids having no basic functional groups thereon; and (b) a second ink having a second color darker than the first color of the first ink, said second ink comprising water and a pigment; wherein intercolor bleed between the first ink and the second ink is reduced in visibility.

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