Color ink composition for graphic art ink jet image printers
First Claim
1. An ink-jet ink for printing on porous, non-porous, and hybrid glossy print media, said ink-jet ink comprising at least one colorant and a vehicle comprising at least one water-miscible organic co-solvent and water, said ink-jet ink further comprising at least three surfactants, the total surfactant concentration ranging from about 0.1 to 5 wt %, a first surfactant consisting essentially of an anionic surfactant, a second surfactant consisting essentially of a non-ionic surfactant, and a third surfactant consisting essentially of a fluorosurfactant, for reducing dry-time, increasing printer/media throughput, and providing good image quality on said glossy print media, wherein said fluoro-surfactant is selected from the group consisting of (RFCH2CH2O)xPO(O−
- NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3;
(RFCH2CH2O)xPO(O−
NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3+hydrocarbon surfactant;
RFCH2CH2SO3H, where RF is F(CF2CF2)z, where z=1-9;
RFCH2CH2SO3—
NH4+, where RF is F(CF2CF2)z, where z=1-9;
C6F13CH2CH2SO3H;
C6F13CH2CH2SO3−
NH4+;
RFCH2CH2S—
CH2CH2COO−
Li+, where RF is F(CF2CF2)z, where z=1-9;
RFCH2CH2O(CH2CH2O)xH, where RF is F(CF2CF2), where z=1-7;
RFCH2CH2O—
(CH2CH2O)yH, where RF is F(CF2CF2)z, where z=1-9;
ammonium perfluoroalkyl sulfonates;
potassium fluorinated alkyl carboxylates;
fluorinated alkyl polyoxyethylene ethanols;
fluorinated alkyl alkoxylate; and
fluorinated alkyl ethers.
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Abstract
An ink jet ink composition is provided for large format printers for printing on both porous, non-porous, and hybrid glossy media. The ink composition comprises at least one water-soluble dye and a vehicle comprising at least one co-solvent and at least two different surfactants, a non-ionic surfactant and a fluoro-surfactant. The total surfactant concentration ranges from about 0.1 to 5 wt % of the ink composition. The non-ionic surfactant is present in a range of about 0.05 to 3 wt % of the ink composition, while the fluoro-surfactant is present in a range of about 0.001 to 3 wt % of the ink composition. The ink formulation that works well with porous, non-porous, and hybrid glossy media and provides substantially instant ink drying and light fastness of the ink. Further, the ink formulation evidences excellent image quality. The ink can also pass harsh pen material compatibility tests. The ink does not puddle on the surface of the orifice plate in the default pen, yet has low viscosity. The ink is excellent in pen reliability such as long decap time, no decel, no kogation, and good drop directionality.
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Citations
21 Claims
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1. An ink-jet ink for printing on porous, non-porous, and hybrid glossy print media, said ink-jet ink comprising at least one colorant and a vehicle comprising at least one water-miscible organic co-solvent and water, said ink-jet ink further comprising at least three surfactants, the total surfactant concentration ranging from about 0.1 to 5 wt %, a first surfactant consisting essentially of an anionic surfactant, a second surfactant consisting essentially of a non-ionic surfactant, and a third surfactant consisting essentially of a fluorosurfactant, for reducing dry-time, increasing printer/media throughput, and providing good image quality on said glossy print media, wherein said fluoro-surfactant is selected from the group consisting of (RFCH2CH2O)xPO(O−
- NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3;
(RFCH2CH2O)xPO(O−
NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3+hydrocarbon surfactant;
RFCH2CH2SO3H, where RF is F(CF2CF2)z, where z=1-9;
RFCH2CH2SO3—
NH4+, where RF is F(CF2CF2)z, where z=1-9;
C6F13CH2CH2SO3H;
C6F13CH2CH2SO3−
NH4+;
RFCH2CH2S—
CH2CH2COO−
Li+, where RF is F(CF2CF2)z, where z=1-9;
RFCH2CH2O(CH2CH2O)xH, where RF is F(CF2CF2), where z=1-7;
RFCH2CH2O—
(CH2CH2O)yH, where RF is F(CF2CF2)z, where z=1-9;
ammonium perfluoroalkyl sulfonates;
potassium fluorinated alkyl carboxylates;
fluorinated alkyl polyoxyethylene ethanols;
fluorinated alkyl alkoxylate; and
fluorinated alkyl ethers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3;
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12. An ink-jet ink for printing on porous, non-porous, and hybrid glossy print media, said ink-jet ink comprising (a) 0.5 to 5 wt % of at least one water-soluble dye selected from the group consisting of yellow, cyan, and magenta dyes and (b) a vehicle comprising 5 to 20 wt % of at least one water-miscible organic co-solvent, about 0.1 to 5 wt % of a surfactant mixture comprising an anionic surfactant, a non-ionic surfactant, and an anionic fluoro-surfactant selected from the group consisting of (RFCH2CH2O)xPO(O−
- NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3;
(RFCH2CH2O)xPO(O−
NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3+hydrocarbon surfactant;
RFCH2CH2SO3H, where RF is F(CF2CF2)z, where z=1-9;
RFCH2CH2SO3−
NH4+, where RF is F(CF2CF2)z, where z=1-9;
C6F13CH2CH2SO3H;
C6F13CH2CH2SO3−
NH4+;
RFCH2CH2S—
CH2CH2COO−
Li+, where RF is F(CF2CF2)z, where z=1-9;
RFCH2CH2O(CH2CH2O)xH, where RF is F(CF2CF2)z, where z=1-7;
RFCH2CH2O(CH2CH2O)yH, where RF is F(CF2CF2)z, where z=1-9;
ammonium perfluoroalkyl sulfonates;
potassium fluorinated alkyl carboxylates;
fluorinated alkyl polyoxyethylene ethanols;
fluorinated alkyl alkoxylate; and
fluorinated alkyl ethers;
0 to about 1.5 wt % of at least one component independently selected from the group consisting of buffers, biocides, and metal chelators; and
the balance water. - View Dependent Claims (13, 14, 15, 16, 17)
- NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3;
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18. A method of printing an ink-jet ink on porous, non-porous, and hybrid glossy print media, said method comprising:
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(a) providing an ink-jet ink composition, said ink-jet ink comprising at least one colorant and a vehicle comprising at least one water-miscible organic co-solvent and water, said ink-jet ink further comprising at least three surfactants, the total surfactant concentration ranging from about 0.1 to 5 wt %, a first surfactant consisting essentially of an anionic surfactant, a second surfactant consisting essentiaily of a non-ionic surfactant, and a third surfactant consisting essentially of a fluoro-surfactant, wherein said fluoro-surfactant is selected from the group consisting of (RFCH2CH2O)xPO(O−
NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3;
(RFCH2CH2O)xPO(O−
NH4+)y, where RF is F(CF2CF2)z, where z=1-7 and where x+y=3+hydrocarbon surfactant;
RFCH2CH2SO3H, where RF is F(CF2CF2)z, where z=1-9;
RFCH2CH2SO3−
NH4+, where RF is F(CF2CF2)z, where z=1-9;
C6F13CH2CH2SO3H;
C6F13CH2CH2SO3−
NH4+;
RFCH2CH2S—
CH2CH2COO−
Li+, where RF is F(CF2CF2)z, where z=1-9;
RFCH2CH2O(CH2CH2O)xH, where RF is F(CF2CF2)z, where z=1-7;
RFCH2CH2O(CH2CH2O)yH, where RF is F(CF2CF2)z, where z=1-9;
ammonium perfluoroalkyl sulfonates;
potassium fluorinated alkyl carboxylates;
fluorinated alkyl polyoxyethylene ethanols;
fluorinated alkyl alkoxylate; and
fluorinated alkyl ethers; and
(b) causing droplets of said ink-jet ink composition to be jetted through an orifice plate onto said print media. - View Dependent Claims (19, 20, 21)
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Specification