Pigmented ink-jet inks with improved print quality and reliability
AssigneeHewlett-Packard Development Company, L.P.
InventorsZia Rehman, Paul Tyrell, Marlene McGorrin, Mary E Austin, Alexey S Kabalnov, Patricia A Wang
Life of this patent
Estimating the term…
Abstract
Compositions, systems, and methods of printing an ink-jet image are provided. The composition can include a liquid vehicle including water, a liquid vehicle having from 5 wt % to 35 wt % of total organic solvent content; from 1 wt % to 6 wt % of acid-functionalized pigment solids; and from 0.001 wt % to 6 wt % of styrene-maleic anhydride copolymer, said styrene-maleic anhydride copolymer having a weight average molecular weight from about 400 Mw to 15,000 Mw.
Claims25
A system for printing images on a substrate, comprising:
- a) an ink-jet ink including:
- i) a liquid vehicle including water, and from 5 wt % to 35 wt % total organic solvent content, wherein the organic solvent content includes at least three of 1,5-pentanediol, ethoxylated glycerol, 2-pyrrolidinone, and 2-methyl-1,3-propanediol;
- ii) from 0.1 wt % to 6 wt % of acid-functionalized pigment solids;
- iii) from 0.001 wt % to 6 wt % of styrene-maleic anhydride copolymer, said styrene-maleic anhydride copolymer having a weight average molecular weight from about 400 Mw to 15,000 Mw.
- b) a printhead loaded with the ink-jet ink and configured for jetting the ink-jet ink at a firing frequency from 12 kHz to 25 kHz, and wherein the frequency response range for the ink-jet ink is such that the ink-jet ink is jettable at from 3 kHz to 25 kHz.
A method of rapidly printing an ink-jet image, comprising ink-jetting an ink-jet ink onto a media substrate at a firing frequency from 12 kHz to 25 kHz, said ink-jet ink comprising:
- a) a liquid vehicle including water, and from 5 wt % to 35 wt % total organic solvent content, wherein the organic solvent content includes at least three of 1,5-pentanediol, ethyoxylated glycerol, 2-pyrrolidinone, and 2-methyl-1,3-propanediol;
- b) from 0.01 wt % to 6 wt % of acid-functionalized pigment solids;
- c) from 0.001 wt % to 6 wt % of styrene-maleic anhydride copolymer, said styrene-maleic anhydride copolymer having a weight average molecular weight from about 400 Mw to 15,000 Mw,
- wherein the frequency response range for the ink-jet ink is such that the ink-jet ink is jettable at from 3 kHz to 25 kHz.
An ink-jet ink composition, comprising:
- a) a liquid vehicle having from 5 wt % to 35 wt % of total organic solvent content, wherein the organic solvent content includes at least three of 1,2-pentanediol, ethoxylated glycerol, 2-pyrrolidinone, and 2-methyl-1,3-propanediol;
- b) from 0.1 wt % to 6 wt % of acid-functionalized pigment solids;
- c) from 0.001 wt % to 6 wt % of styrene-maleic anhydride copolymer, said styrene-maleic anhydride copolymer having a weight average molecular weight from about 400 Mw to 15,000 Mw;
- wherein the ink-jet ink composition is reliably jettable at all firing frequencies ranging from 3 kHz to 25 kHz.
Dependencies are inferred from the claim text.