Non-Newtonian photo-curable ink composition
AssigneeHewlett-Packard Development Company, L.P.
InventorsJames P. Shields, Raymond Adamic, Sundar Vasudevan
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Abstract
A non-Newtonian photo-curable ink composition that includes a polymerizable FMOC material in an amount ranging from about 2 wt % to about 20 wt % by total weight of the ink composition, a photo-initiator, an organic solvent and water, wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state. Also described herein is a method for making such non-Newtonian photo-curable ink composition and a method for producing printed images using such non-Newtonian photo-curable ink composition.
Claims19
A non-Newtonian photo-curable ink composition, comprising:
- a. a polymerizable FMOC material in an amount ranging from about 2 wt % to about 20 wt % by total weight of the ink composition,
- b. a photo-initiator,
- c. an organic solvent,
- d. and water,
- wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state;
- wherein the polymerizable FMOC material has the formula
- and wherein R1 is a polymerizable or curable amino acid or peptide.
A non-Newtonian photo-curable ink composition, comprising:
- a. a polymerizable FMOC material in an amount ranging from about 2 wt % to about 20 wt % by total weight of the ink composition,
- b. a photo-initiator,
- c. an organic solvent, and
- d. water,
- wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state;
- and wherein the organic solvent is a network participating solvent selected from the group consisting of ethylhydroxy-propanediol, glycerol, 1,5 pentanediol, ethylene glycol, triethylene glycol, and mixtures thereof;
- or the organic solvent is a network non-participating solvent selected from the group consisting of 2-pyrrolidinone, 1,2 pentanediol, 2-methyl-1,3-propanediol, 1,2 hexanediol, and mixtures thereof.
An aqueous ink composition having non-Newtonian properties comprising a photo-initiator and a structured network that is formed by FMOC material, wherein the polymerizable FMOC material has the formula
- and wherein R1 is a polymerizable or curable amino acid or peptide.
A method for manufacturing a non-Newtonian photo-curable ink composition comprising:
- a. adding a polymerizable FMOC material to water and to an organic solvent to form a solution or dispersion and adding a photo-initiator in order to produce a composition comprising a polymerizable FMOC material in an amount ranging from about 2 wt % to about 20 wt % by total weight of the ink composition;
- and having a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state;
- b. subjecting the combination to conditions under which the ink composition becomes substantially uniform;
- c. and subjecting the combination to filtration;
- wherein the polymerizable FMOC material has the formula
- and wherein R1 is a polymerizable or curable amino acid or peptide.
Dependencies are inferred from the claim text.