US3889269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous ink for use in the ink jet process
Assignee: Agfa Gevaert AG
•
Filing: 1973-11-27
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Granted: 1975-06-10
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Expires: 1993-11-27
Abstract
Abstract Inks that are used in the ink jet process consist of an aqueous solution of a watersoluble dye which contains in addition a hydroxyalkylformamide. The latter compound prevents premature drying of the ink without increase of the viscosity of the ink.
Inventors
- 👤 Rudolf Meyer
- 👤 Klaus Hoffmann
- 👤 Karl-Heinz Freytag
- 👤 Hans Vetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:14
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
86 words
IN A PROCESS FOR PRODUCING AN IMAGE ON A SURFACE BY THE APPLICATION OF AN INK THE STEPS COMPRISING MOVING A SURFACE ON A SUPPORT, FORMING A JET OF INK CONTAINING WATER SOLUBLE DYE IN AN AQUEOUS SOLUTION, DIRECTING THE INK IN THE FORM OF A JET ONTO THE MOVING SURFACE, MODULATING THE APPLIED INK JET BY ELECTRICAL SIGNALS, SAID SIGNALS BEING RELATED TO THE IMAGE WHEREIN THE IMPROVEMENT COMPRISES THE INK IN ADDITION CONTAINS AS A SUBSTANCE THAT PREVENTS DRYING A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
86 words
IN A PROCESS FOR PRODUCING AN IMAGE ON A SURFACE BY THE APPLICATION OF AN INK THE STEPS COMPRISING MOVING A SURFACE ON A SUPPORT, FORMING A JET OF INK CONTAINING WATER SOLUBLE DYE IN AN AQUEOUS SOLUTION, DIRECTING THE INK IN THE FORM OF A JET ONTO THE MOVING SURFACE, MODULATING THE APPLIED INK JET BY ELECTRICAL SIGNALS, SAID SIGNALS BEING RELATED TO THE IMAGE WHEREIN THE IMPROVEMENT COMPRISES THE INK IN ADDITION CONTAINS AS A SUBSTANCE THAT PREVENTS DRYING A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
35 words
A process as claimed in claim 1, in which the substance is Beta -hydroxyethylformamide, gamma -hydroxypropylformamide, Beta -hydroxy-propylformamide, gamma -hydroxybutylformamide, N-methyl, N- Beta -hydroxy-ethylformamide, N,N-bis-( Beta -hydroxyethyl)formamide, or N- Beta -hydroxyethyl-N- Beta -formylamine ethyl formamide.
Claim 4
Dependent Claim
20 words
A process as claimed in claim 1 in which the ink contains 4 to 10 % by weight of dye.
Claim 5
Dependent Claim
20 words
A process as claimed in claim 1, in which the ink has a viscosity not in excess of 1.35 cP.
References Cited (Backward Citations)
US2600129A
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US3060429A
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US3150976A
Cited
US3560204A
Cited
US3389108A
Cited
US3715219A
Cited
US3798656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |