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US 8,282,723 B2Granted
Magenta inkjet ink having improved print quality with porous photo media
AssigneeLexmark International, Inc.
InventorsAnn P. Holloway, Meagan Winkler Sisk, Agnes Kam Zimmer
Life of this patent
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Abstract
The present invention relates to magenta dye-based inkjet inks having improved permanence when jetted onto porous photo media. The inkjet ink includes a mixture of at least two magenta dyes, at least three co-solvents comprising about 18 to about 24% of the composition of the ink by weight, a penetrant, at least one wetting agent, and water.
Claims18
An inkjet ink comprising:
- a mixture of at least two magenta dyes;
- at least three co-solvents comprising about 18% to about 24% of the composition of the ink by weight;
- a penetrant;
- a wetting agent selected from the group consisting of polyoxyethylene dimethyl siloxanes, fluorosurfactants, and combinations thereof;
- a polymeric dispersant about 0.5% to about 2.0% by weight of the inkjet ink;
- and
- water.
4 more elements
A method of printing utilizing an inkjet ink, the method being comprised of the steps of:
- positioning a print medium substantially adjacent to a printer having a print head retaining an inkjet ink, wherein the inkjet ink is comprised of
- a mixture of at least two magenta dyes;
- at least three co-solvents comprising about 18% to about 24% of the composition of the ink by weight;
- a penetrant;
- a wetting agent selected from the group consisting of polyoxyethylene dimethyl siloxanes, fluorosurfactants and combinations thereof;
- a polymeric dispersant about 0.5% to about 2.0% by weight of the inkjet ink;
- and
- water;
- jetting the inkjet from the print head onto a porous photo medium.
6 more elements
Dependencies are inferred from the claim text.