Inkjet printing system that provides improved mottle
AssigneeHewlett-Packard Development Company, L.P.
InventorsGeorge Sarkisian, Keshava A. Prasad
Life of this patent
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Abstract
An inkjet printing system that includes a fixer fluid and a pigment-based inkjet ink. The fixer fluid includes a cationic polymer and an acidic crashing agent. The inkjet ink includes an anionic pigment and at least one of the following: at least one nonionic surfactant present in the inkjet ink at less than or equal to approximately 0.1% by weight, at least one anionic binder present in the inkjet ink at less than or equal to approximately 2% by weight, and less than or equal to approximately 20% by weight of at least one organic solvent.
Claims41
An inkjet printing system, comprising:
- a fixer fluid comprising a cationic polymer and an acidic crashing agent;
- and
- an inkjet ink comprising an anionic pigment and at least one of the following:
- at least one nonionic surfactant present in the inkjet ink at less than or equal to approximately 0.1% by weight;
- at least one anionic binder present in the inkjet ink at less than or equal to approximately 2% by weight;
- and
- less than or equal to approximately 20% by weight of at least one organic solvent;
- wherein an image printed using the inkjet printing system exhibits a visual mottle ranking greater than or equal to 8.
A method of producing an inkjet printing system, comprising:
- formulating an inkjet ink comprising an anionic pigment dispersed in an ink vehicle, the ink vehicle comprising at least one of the following:
- at least one nonionic surfactant present in the inkjet ink at less than or equal to approximately 0.1% by weight;
- at least one anionic binder present in the inkjet ink at less than or equal to approximately 2% by weight;
- and
- less than or equal to approximately 20% by weight of at least one organic solvent;
- and
- formulating a fixer fluid comprising a cationic polymer and an acidic crashing agent;
- wherein an image printed using the inkjet printing system exhibits a visual mottle ranking greater than or equal to 8.
A method of printing an image having improved mottle, the method comprising:
- applying an inkjet ink to a print medium, the inkjet ink comprising an anionic pigment dispersed in an ink vehicle, the ink vehicle comprising at least one of the following:
- at least one nonionic surfactant present in the inkjet ink at less than or equal to approximately 0.1% by weight;
- at least one anionic binder present in the inkjet ink at less than or equal to approximately 2% by weight;
- and
- less than or equal to approximately 20% by weight of at least one organic solvent;
- and
- applying a fixer fluid to the print medium, the fixer fluid comprising a cationic polymer and an acidic crashing agent;
- wherein the image exhibits a visual mottle ranking greater than or equal to 8.
Dependencies are inferred from the claim text.