White ink for marking candy substrates
AssigneeMarconi Data Systems Inc.
InventorMohammed W. Siddiqui
Life of this patent
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Abstract
The present invention provides an ink composition for use in ink jet printing on food items, candy, particularly dark candy, such as chocolate, and to a method of forming printed images on such food items by use of the ink compositions. The compositions of the present invention comprise a pigment, a binder, and an aqueous carrier.
Claims21
An ink jet ink composition for printing onto a food item comprising a pigment having a particle size from about 0.1 to about 3.0 microns, a binder and an aqueous carrier, wherein the pigment is present in an amount from about 4.0 to about 16.0% and the binder is present in an amount from about 2.0 to about 10.0%, based on the total weight of the ink jet ink composition, and the ratio of the pigment to the binder is from about 0.4 to about 8.0, wherein said ink jet ink composition exhibits (1) a viscosity from about 1 to about 10 centipoise (cps) at 25° C., (2) an electrical resistivity from about 50 to about 2,500 ohms-cm, (3) a sonic velocity from about 1,000 to about 1,700 m/sec., and (4) a surface tension from 62 to 70 dynes/cm;
- and wherein said ink jet ink composition is substantially free of components that are unfit for human consumption.
A method of printing an image on an edible substrate comprising forming an ink composition into droplets and directing the droplets to a specific location on said substrate to form said image, said ink composition comprising a pigment having a particle size from about 0.1 to about 3.0 microns, a binder, and an aqueous carrier, wherein the pigment is present in an amount from about 4.0 to about 16.0% and the binder is present in an amount from about 2.0 to about 10.0%, based on the total weight of the ink composition, and the ratio of the pigment to the binder is from about 0.4 to about 8.0, wherein said ink composition exhibits (1) a viscosity from about 1 to about 10 centipoise (cps) at 25° C., (2) and electrical resistivity from about 50 to about 2,500 ohms-cm, (3) a sonic velocity from about 1,000 to about 1,700 m/sec., and (4) a surface tension from 62 to 70 dynes/cm;
- and wherein said ink composition consists essentially of components that are food grade or edible.
An ink jet ink composition for printing onto a food item comprising a pigment having a particle size from about 0.1 to about 3.0 microns, a binder and an aqueous carrier, wherein the pigment is present in an amount from about 4.0 to about 16.0% and the binder is present in an amount from about 2.0 to about 10.0%, based on the total weight of the ink jet ink composition, and the ratio of the pigment to the binder is from about 0.4 to about 8.0, wherein said ink jet ink composition exhibits (1) a viscosity from about 1 to about 10 centipoise (cps) at 25° C., (2) an electrical resistivity from about 50 to about 2,500 ohms-cm, (3) a sonic velocity from about 1,000 to about 1,700 m/sec., and (4) a surface tension from 62 to 70 dynes/em;
- and wherein said ink jet ink composition consists essentially of components that are food grade or edible.
Dependencies are inferred from the claim text.