US5730790A
Expired / Lapsed
US
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Black to color bleed control using cationic surfactants
Assignee: Hewlett Packard Development Co LP
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Filing: 1996-04-11
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Granted: 1998-03-24
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Expires: 2016-04-11
Abstract
Abstract A set of ink-jet inks and method for reducing bleed are provided in which the ink-jet ink is formulated to comprise at least one dye-based ink-jet ink composition and at least one pigment-based ink-jet ink composition, wherein the dye-based ink-jet ink composition includes at least one cationic surfactant and wherein the pigment-based ink-jet ink composition includes at least one negatively-charged dispersant. Bleed control between the dye-based ink and the pigment-based ink is achieved by the formation of a stable interface formed by the interaction of the negatively-charged dispersant and both the cationic and counterion groups of the cationic surfactant.
Inventors
- 👤 Zia Rehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:43
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
54 words
An ink-jet ink set for ink-jet printing comprising at least one dye-based ink-jet ink composition and at least one pigment-based ink-jet ink composition, wherein said at least one dye-based ink-jet ink composition includes at least one cationic surfactant and wherein said at least one pigment-based ink-jet ink composition includes at least one negatively-charged component.
Claim 2
Dependent Claim
54 words
An ink-jet ink set for ink-jet printing comprising at least one dye-based ink-jet ink composition and at least one pigment-based ink-jet ink composition, wherein said at least one dye-based ink-jet ink composition includes at least one cationic surfactant and wherein said at least one pigment-based ink-jet ink composition includes at least one negatively-charged component.
Claim 3
Dependent Claim
36 words
The ink-jet ink set of claim 1 wherein said at least one cationic surfactant is present in said at least one dye-based ink-jet ink composition at a concentration ranging from about 0.5 to 5 wt. %.
Claim 4
Dependent Claim
30 words
The ink-jet ink set of claim 1 wherein said at least one cationic surfactant is selected from the group consisting of polypropoxy quaternary ammonium acetates and polypropoxy quaternary ammonium chlorides.
Claim 5
Dependent Claim
47 words
The ink-jet ink set of claim 1 wherein said at least one cationic surfactant comprises an anion and a counterion and wherein said at least one dye-based ink-jet ink composition further includes a second counterion in addition to that associated with said at least one cationic surfactant.
Claim 6
Dependent Claim
37 words
The ink-jet ink set of claim 4 wherein said second counterion is selected from the group consisting of acetate, formate, chloride, gluconate, succinate, tartrate, glutarate, malonate, carboxylate, fumarate, malate, sebacate, adipate, stearate, oleate, laurate, benzoate, and citrate.
Claim 7
Dependent Claim
35 words
The ink-jet ink set of claim 4 wherein said second counterion is present in said at least one dye-based ink-jet ink composition at a concentration within the range of about 2 to 10 wt. %.
Claim 8
Dependent Claim
29 words
The ink-jet ink set of claim 1 wherein said at least one dye-based ink-jet ink composition further includes a non-quartered surfactant precursor to said at least one cationic surfactant.
Claim 9
Dependent Claim
92 words
The ink-jet ink set of claim 1 wherein said at least one dye-based ink-jet ink comprises about 0.1 to 4 wt. % of at least one dye, about 3 to 20 wt. % of at least one diol, 0 to about 5 wt. % of at least one glycol ether, about 3 to 9 wt. % of 2-pyrrolidone, about 0.5 to 5 wt. % of a cationic surfactant, up to about 5 wt. % of at least one component selected from the group consisting of nonionic surfactants, biocides and buffers, and water.
Claim 10
Dependent Claim
33 words
The ink-jet ink set of claim 1 wherein said at least one dye is selected from the group consisting of Basic Blue 3, Basic Violet 7, Basic Yellow 13, and Basic Yellow 51.
Claim 11
Dependent Claim
35 words
The ink-jet ink set of claim 1 wherein said at least one negatively-charged component is present in said at least one pigment-based ink-jet ink composition within the range of about 1 to 3 wt. %.
Claim 12
Dependent Claim
19 words
The ink-jet ink set of claim 1 wherein said at least one negatively-charged component is a polyacrylic pigment dispersant.
Claim 13
Dependent Claim
49 words
The ink-jet ink set of claim 1 wherein said at least one pigment-based ink-jet ink composition comprises a black pigment-based ink-jet ink and wherein said at least one dye-based ink-jet ink composition comprises a magenta dye-based ink-jet ink, a cyan dye-based ink-jet ink, and a yellow dye-based ink-jet ink.
Claim 14
Independent Claim
82 words
A method of reducing bleed in printing at least two different color inks onto a print medium from an ink-jet pen, said at least two different inks comprising at least one dye-based ink-jet ink composition and at least one pigment-based ink-jet ink composition, said method comprising the steps of formulating said at least one dyebased ink-jet ink composition to include at least one cationic surfactant and formulating said at least one pigment-based ink-jet ink composition to include at least one negatively-charged component.
Claim 15
Independent Claim
82 words
A method of reducing bleed in printing at least two different color inks onto a print medium from an ink-jet pen, said at least two different inks comprising at least one dye-based ink-jet ink composition and at least one pigment-based ink-jet ink composition, said method comprising the steps of formulating said at least one dyebased ink-jet ink composition to include at least one cationic surfactant and formulating said at least one pigment-based ink-jet ink composition to include at least one negatively-charged component.
Claim 16
Dependent Claim
31 words
The method of claim 13 wherein said at least one cationic surfactant is present in said dye-based ink-jet ink composition at a concentration ranging from about 0.5 to 5 wt. %.
Claim 17
Dependent Claim
28 words
The method of claim 13 wherein said at least one cationic surfactant is selected from the group consisting of polypropoxy quaternary ammonium acetates and polypropoxy quaternary ammonium chlorides.
Claim 18
Dependent Claim
45 words
The method of claim 13 wherein said at least one cationic surfactant comprises an anion and a counterion and wherein said at least one dye-based ink-jet ink composition further includes a second counterion in addition to that associated with said at least one cationic surfactant.
Claim 19
Dependent Claim
35 words
The method of claim 16 wherein said second counterion is selected from the group consisting of acetate, formate, chloride, gluconate, succinate, tartrate, glutarate, malonate, carboxylate, fumarate, malate, sebacate, adipate, stearate, oleate, laurate, benzoate, and citrate.
Claim 20
Dependent Claim
33 words
The method of claim 16 wherein said second counterion is present in said at least one dye-based ink-jet ink composition at a concentration within the range of about 2 to 10 wt. %.
Claim 21
Dependent Claim
30 words
The method of claim 13 wherein said at least one dye-based ink-jet ink composition is formulated to further include a non-quarterized surfactant precursor to said at least one cationic surfactant.
Claim 22
Dependent Claim
90 words
The method of claim 13 wherein said at least one dye-based ink-jet ink comprises about 0.1 to 4 wt. % of at least one dye, about 3 to 20 wt. % of at least one diol, 0 to about 5 wt. % of at least one glycol ether, about 3 to 9 wt. % of 2-pyrrolidone, about 0.5 to 5 wt. % of a cationic surfactant, up to about 5 wt. % of at least one component selected from the group consisting of nonionic surfactants, biocides and buffers, and water.
Claim 23
Dependent Claim
31 words
The method of claim 13 wherein said at least one dye is selected from the group consisting of Basic Blue 3, Basic Violet 7, Basic Yellow 13, and Basic Yellow 51.
Claim 24
Dependent Claim
33 words
The method of claim 13 wherein said at least one negatively-charged component is present in said at least one pigment-based ink-jet ink composition within the range of about 1 to 3 wt. %.
Claim 25
Dependent Claim
17 words
The method of claim 13 wherein said at least one negatively-charged component is a polyacrylic pigment dispersant.
Claim 26
Dependent Claim
47 words
The method of claim 13 wherein said at least one pigment-based ink-jet ink composition comprises a black pigment-based ink-jet ink and wherein said at least one dye-based ink-jet ink composition comprises a magenta dye-based ink-jet ink, a cyan dye-based ink-jet ink, and a yellow dye-based ink-jet ink.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2001-03-23 | 2001-09-22 | 2002-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-23 | 2005-09-22 | 2006-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-23 | 2009-09-22 | 2010-03-24 | $7700.00 | Window Closed / Lapsed |