US5358555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink for an ink jet printer
Assignee: SICPA Holding SA
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Filing: 1993-03-30
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Granted: 1994-10-25
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Expires: 2013-03-30
Abstract
Abstract Ink for an ink jet printer comprises a microdisperse three-phase system having two liquid phases and one solid phase, the pigment. The ink exhibits a high indelibility and a low tendency towards the formation of microprecipitates.
Inventors
- 👤 Massimo Argentero
- 👤 Anna Maria Soudaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:54
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
A pigmented ink for ink jet printers comprising a microdisperse three-phase suspension composed of a continuous liquid phase, a discontinuous liquid phase, and a solid phase dispersed in the discontinuous phase, said continuous liquid phase being composed of water or of mixtures of water and water-soluble organic solvents selected from the group consisting of glycols, thioglycols, glycol ethers, polyvinylpyrrolidone and N-methylpyrrolidone, said discontinuous liquid phase being composed of natural oils, paraffin oils, naphthenic oils, synthetic or siloxane oils, said continuous and discontinuous liquid phases being mixed as an emulsion with emulsifiers selected from the group consisting of triethanolamine oleate and sodium dodecylsulphate and with coemulsifiers selected from the group consisting of alkyl phenol ethoxylates, amines, alcohol and fatty acid ethoxylates, esters and ethoxylates esters of sorbitol, wherein said emulsion contains a quantity of water in a ratio of water/emulsion of between 3:1 and 10:1 by weight and said discontinuous phase is present in an amount of from 2% to 30% by weight of the ink.
Claim 2
Dependent Claim
165 words
A pigmented ink for ink jet printers comprising a microdisperse three-phase suspension composed of a continuous liquid phase, a discontinuous liquid phase, and a solid phase dispersed in the discontinuous phase, said continuous liquid phase being composed of water or of mixtures of water and water-soluble organic solvents selected from the group consisting of glycols, thioglycols, glycol ethers, polyvinylpyrrolidone and N-methylpyrrolidone, said discontinuous liquid phase being composed of natural oils, paraffin oils, naphthenic oils, synthetic or siloxane oils, said continuous and discontinuous liquid phases being mixed as an emulsion with emulsifiers selected from the group consisting of triethanolamine oleate and sodium dodecylsulphate and with coemulsifiers selected from the group consisting of alkyl phenol ethoxylates, amines, alcohol and fatty acid ethoxylates, esters and ethoxylates esters of sorbitol, wherein said emulsion contains a quantity of water in a ratio of water/emulsion of between 3:1 and 10:1 by weight and said discontinuous phase is present in an amount of from 2% to 30% by weight of the ink.
Claim 3
Dependent Claim
26 words
A pigmented ink according to claim 1, wherein said discontinuous phase is present in an amount of from 3% to 10% by weight of the ink.
Claim 4
Dependent Claim
19 words
A pigmented ink according to claim 1, wherein said ink has a viscosity of from 1 to 10 mPa·sec.
Claim 5
Dependent Claim
24 words
A pigmented ink according to claim 1, wherein the water contained in said ink is at least of 75% by weight of the ink.
Claim 6
Dependent Claim
14 words
A pigmented ink according to claim 2 or 3, further including a bactericide compound.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |