Inkjet printing
AssigneeHewlett-Packard Development Company, L.P.
InventorsAli Emamjomeh, Elizabeth Ann Visnyak, George Sarkisian
Life of this patent
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Abstract
An inkjet printing system is described herein. In an implementation, the inkjet printing system includes a fixer dispensing unit for applying a fixer composition on a substrate and an ink dispensing unit for applying an ink composition on the substrate. The fixer composition includes a metal salt in a range of about 5% to 10% by weight. Further, the ink composition includes a liquid vehicle having a non-volatile organic solvent, a colorant dispersed in the liquid vehicle, and a latex binder dispersed in the liquid vehicle.
Claims12
An inkjet printing system, comprising:
- a fixer dispensing unit for applying a fixer composition on a substrate, wherein the fixer composition comprises a metal salt in a range of about 7% to 9% by weight, wherein the metal salt is dispersed in a fixer liquid vehicle and the metal salt is calcium propionate;
- an ink dispensing unit for applying an ink composition on the substrate, wherein the ink dispensing unit is positioned downstream of the fixer dispensing unit for wet-on-wet printing of the ink composition over the fixer composition, wherein the ink composition comprises
- a liquid vehicle having distilled water as a solvent and a non-volatile organic solvent as a co-solvent,
- a colorant dispersed in the liquid vehicle, and
- a latex binder dispersed in the liquid vehicle, wherein the latex binder has a glass transition temperature in a range of about 60° C. to about 80° C.;
- and
- a drying unit downstream of the ink dispensing unit to heat the substrate such that the latex forms a film over the colorant and mixes with the colorant on the substrate.
A method for printing in an inkjet printing system, the method comprising:
- applying a fixer composition on a substrate, the fixer composition comprising a metal salt in a range of about 7% to 9% by weight, wherein the metal salt is dispersed in a fixer liquid vehicle and the metal salt is calcium propionate;
- applying an ink composition over the fixer composition on the substrate while the fixer composition is wet,
- wherein the ink composition comprises
- a liquid vehicle having distilled water as a solvent and a non-volatile organic solvent as a co-solvent,
- a colorant dispersed in the liquid vehicle, and
- a latex binder dispersed in the liquid vehicle, wherein the latex binder has
- a glass transition temperature in a range of about 60° C. to about 80° C.;
- and
- drying the fixer composition and the ink composition and heating the substrate such that the latex forms a film over the colorant and mixes with the colorant on the substrate to obtain a print on the substrate.
Dependencies are inferred from the claim text.