Method for printing a substrate with ink drops, and ink composition
AssigneeStork Digital Imaging B.V.
InventorsTheodorus Henricus Gerardus Maria Peters, Jacobus Henricus Diederen
Life of this patent
Estimating the term…
Abstract
In a method for printing a substrate which is provided with a polymeric ink-receiving layer with ink drops according to the “drop-on-demand” principle, using an ink jet printing device, the printhead of which is provided with a piezo element for generating ink drops, the method comprising the steps of supplying the substrate, generating ink drops and depositing the generated ink drops on the substrate, the ink from which the ink drops are formed, has an ink composition which comprises a dye, water, a lower alcohol and humectant, the lower alcohol content thereof being 5-30% by weight.
Claims11
Method for printing a substrate with ink drops according to the “drop-on-demand” principle, which substrate is provided with a polymeric ink-receiving layer, using an ink jet printing device, the printhead of which is provided with a piezo element for generating ink drops, the method comprising the steps of supplying the substrate, generating ink drops and depositing the generated ink drops on the substrate, wherein the ink from which the ink drops are formed, has an ink composition which comprises a water-soluble dye, water, a lower alcohol and humectant, wherein the lower alcohol content is 5-30% by weight, wherein the ink composition has a viscosity greater than 3 cP, and wherein the humectant to lower alcohol weight ratio is between 0.10 and 1.50.
Ink composition, particularly suitable for the method according to one of the preceding claims, wherein the ink composition comprises a water-soluble dye, water, lower alcohol and humectant, the lower alcohol content thereof being 5-30% by weight, the lower alcohol to water weight ratio being between 0.08 and 0.6, wherein the ink composition has a viscosity greater than 3 cP, and wherein the humectant to lower alcohol weight ratio is between 0.10 and 1.50.
Dependencies are inferred from the claim text.