Patent ID: 7735988

Claim:
Inkjet printing ink composition, comprising a. at least one binder in an amount between 4 to 20 wt-% of the overall composition; b. at least one non-particulate matting compound in an amount between 1 to 8 wt-% of the overall composition; c. at least one fast-drying solvent in an amount from 70 to 90 wt-% of the overall composition; and d. at least one marking compound absorbing light outside the visible range in an amount from 0.001 to 5 wt-%; wherein the matting compound has a higher boiling point than the fast drying solvent, and wherein the binder is insoluble in the matting compound and is selected from the group of polymers selected from the group consisting of vinyl chloride- and vinyl acetate copolymers, nitrocellulose and polyvinyl butyral.