Low-gloss ink-jet ink
AssigneeSicpa Holding SA
InventorsThomas Tiller, Xavier Marguerettaz
Life of this patent
Estimating the term…
Abstract
Non-visible ink-jet printing ink composition for marking a substrate, comprising at least one marking compound absorbing light outside the visible wavelength range of about 400-700 nm, and which comprises a hydrocarbon compound, having two to six carbon atoms carrying two or three hydroxyl groups, as a non-particulate matting agent, so as to adapt the gloss of the ink-jet printed marking to the gloss of the substrate.
Claims21
1-16. (canceled)
Method of use of at least one hydrocarbon compound having a carbon chain of two to six carbon atoms carrying two or three hydroxyl groups in an inkjet printing ink composition as a non-particulate matting compound, said method comprising the step of incorporating a sufficient amount of said matting compound into said printing ink composition such that the gloss of a marking printed with said printing ink composition is adapted to the gloss of a substrate carrying said marking so that said marking is not discernible by an unaided eye.
A substrate carrying a printed security marking printed with an inkjet printing ink composition comprising a non-particulate matting compound with at least one hydrocarbon compound having a linear or branched carbon chain of two to six carbon atoms carrying two or three hydroxyl groups, wherein the gloss of said security marking is adapted to the gloss of said substrate by incorporating a sufficient amount of said matting compound into said printing ink composition such that said marking is not discernible by an unaided eye.
Method of applying an invisible security marking to a substrate, comprising the steps of:
- providing an inkjet printing ink comprising a sufficient amount of at least one non-particulate matting compound;
- and
- printing with said ink a security marking on a substrate, wherein the gloss of the printed security marking is adapted to the gloss of said substrate so that said marking is not discernible by an unaided eye,
- wherein said at least one non-particulate matting compound is a hydrocarbon compound having a linear or branched carbon chain of two to six carbon atoms carrying two or three hydroxyl groups.
Inkjet printing ink composition comprising at least one solvent, at least one binder and at least one marking compound, said marking compound absorbing light of a non-visible wavelength, and optionally additives, wherein said ink further comprises a sufficient amount of a non-particulate matting compound selected from the group of hydrocarbon compounds having a linear or branched carbon chain of two to six carbon atoms carrying two or three hydroxyl groups, such that the gloss of a marking printed with said printing ink composition is adapted to the gloss of a substrate carrying said marking so that said marking is not discernible by an unaided eye.
Dependencies are inferred from the claim text.