Wet rub resistant ink compositions
AssigneeLexmark International, Inc.
InventorsBradley L. Beach, Ameeta B. Madhava, Anna M. Pearson, Ajay K. Suthar
Life of this patent
Estimating the term…
Abstract
A wet rub resistant ink composition comprises, by weight, at least about 15% carrier medium, colorant in an amount of no more than about 20%, and at least about 2% polymeric capsules having central cavities containing water. The composition is substantially free of film-forming resins. The ink composition may be used in combination with other ink compositions having different colors or shades to increase the color gamut of an ink system.
Claims47
A method of applying an ink composition to a substrate, wherein the ink composition comprises a carrier medium, a colorant, and polymeric capsules having central cavities containing water;
- said method comprising applying the ink composition to the substrate and then applying heat and pressure to the ink composition.
A ink system comprising at least two ink compositions, wherein at least one ink composition comprises:
- (a) a carrier medium;
- (b) a colorant other than a white pigment;
- (c) polymeric capsules having central cavities containing water;
- wherein the at least one ink composition is substantially free of a film-forming resin.
A method of increasing the color gamut of an ink system, comprising the step of providing an ink system with at least one ink composition comprising:
- (a) a colorant and
- (b) polymeric capsules comprising polymer shells and having central cavities.
A method of applying an ink composition to a substrate, wherein the ink composition comprises a carrier medium, a colorant, and polymeric capsules having central cavities containing water;
- said method comprising applying the ink composition to the substrate and then applying heat to the ink composition.
A composition comprising, by weight:
- (a) at least about 15% carrier medium;
- (b) colorant in an amount of no more than 20%;
- (c) at least about 2% polymeric capsules having central cavities containing water;
- and
- (d) a dispersant selected from the group consisting of cationic dispersants, anionic dispersants, zwitterionic dispersants, amphoteric dispersants and mixtures thereof;
- wherein the composition is substantially free of a film-forming resin.
A composition comprising, by weight:
- (a) at least about 15% carrier medium;
- (b) colorant in an amount of no more than 20%;
- and
- (c) at least about 2% polymeric capsules having central cavities containing water;
- wherein the composition is substantially free of a film-forming resin and the composition is substantially free of polyamines.
A composition comprising, by weight:
- (a) at least about 15% carrier medium;
- (b) colorant in an amount of no more than 20%;
- and
- (c) at least about 2% polymeric capsules having central cavities containing water;
- wherein the composition is substantially free of a film-forming resin and the polymeric capsules have an outer diameter of less than micron.
A composition comprising, by weight:
- (a) at least about 15% carrier medium;
- (b) colorant in an amount of no more than 20%;
- and
- (c) about 2% to about 10% polymeric capsules having central cavities containing water;
- wherein the composition is substantially free of a film-forming resin.
A composition comprising, by weight:
- (a) at least about 15% carrier medium;
- (b) colorant in an amount of no more than 20%;
- and
- (c) at least about 2% polymeric capsules having central cavities containing water;
- wherein the composition is substantially free of a film-forming resin and the composition comprises from about 0.5% to about 10% by weight of pigment.
A composition comprising, by weight:
- (a) at least about 15% carrier medium;
- (b) colorant in an amount of no more than 20%;
- and
- (c) at least about 2% polymeric capsules having central cavities containing water;
- wherein the composition is substantially free of a film-forming resin and the polymeric capsules comprise polystyrene shells.
A composition comprising, by weight:
- (a) at least about 15% carrier medium;
- (b) colorant in an amount of no more than 20%;
- (c) at least about 2% polymeric capsules having central cavities containing water;
- and
- (d) a humectant;
- wherein the composition is substantially free of a film-forming resin.
A composition comprising, by weight:
- (a) at least about 15% carrier medium;
- (b) colorant in an amount of no more than 20%;
- and
- (c) at least about 2% polymeric capsules having central cavities containing water;
- wherein the composition is substantially free of a film-forming resin and the colorant is selected from the group consisting azo pigments, polycyclic pigments, nitro pigments, carbonates, chromates, titanium oxides, zinc oxides, iron oxides, carbon black and mixtures thereof.
Dependencies are inferred from the claim text.