Patent US5496879A successfully refreshed from Google Patents.
US5496879A
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Printing ink
Assignee: SIEGWERK DRUCKFARBEN AG
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Filing: 1993-02-24
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Granted: 1996-03-05
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Expires: 2013-02-24
Abstract
Abstract A solid or amorphous printing ink, especially a gravure printing ink, is fused to become printable in a fluidized condition. The ink is fixed on imprint material by solidification by heat extraction or cooling. The ink includes a binder-material having at least two component groups with each having at least one member, of which members of the first component group have the property to act as solvent for the members of the second group of components. The members of the first component group are solid state crystalline materials. The materials are solid at ambient temperature with a relatively low melting point. The members of the second component group are in a vitreous solid or amorphous condition at ambient temperature. These materials, especially polymers, are soluble in the molten first component group.
Inventors
- 👤 Rudolf Griebel
- 👤 Karl A. Kocherscheid
- 👤 Klaus Stammen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:42
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/10; C; C09; C09D; C09D11/00; C09D11/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
196 words
A printing ink consisting essentially of: a solid solventless ink such that said ink is printable in a fused fluid condition having a ready-to-print viscosity for a gravure printing method after addition of heat, and said ink being solidifiable by heat extraction after having been printed onto imprinting material; said ink including an optional colorant and a binding agent having at least two component groups, each component group including at least one member, said members of the first component group having solvent character for said members of the second component group; wherein said members of the first component group are present as solid phase crystaline materials at ambient temperatures; wherein said members of the second component group which are polymers are present as viterous, amorphous materials in solid phase at ambient temperature, which are soluble in said molten members of the first component group, and precipitate at a temperature above the melting point of the members of the first component group; and wherein upon heat extraction, the members of the first component group are dissolved as a solid solution in the members of the second component group when these are precipitating from the fused fluid condition.
Claim 2
Dependent Claim
196 words
A printing ink consisting essentially of: a solid solventless ink such that said ink is printable in a fused fluid condition having a ready-to-print viscosity for a gravure printing method after addition of heat, and said ink being solidifiable by heat extraction after having been printed onto imprinting material; said ink including an optional colorant and a binding agent having at least two component groups, each component group including at least one member, said members of the first component group having solvent character for said members of the second component group; wherein said members of the first component group are present as solid phase crystaline materials at ambient temperatures; wherein said members of the second component group which are polymers are present as viterous, amorphous materials in solid phase at ambient temperature, which are soluble in said molten members of the first component group, and precipitate at a temperature above the melting point of the members of the first component group; and wherein upon heat extraction, the members of the first component group are dissolved as a solid solution in the members of the second component group when these are precipitating from the fused fluid condition.
Claim 3
Dependent Claim
23 words
The printing ink according to claim 1, wherein said optional colorant is dispersally portioned at ambient temperature in the first and second components.
Claim 4
Dependent Claim
19 words
The printing ink according to claim 2, wherein said optional colorant is soluble in the molten first component group.
Claim 5
Dependent Claim
17 words
The printing ink according to claim 2, wherein said optional colorant is a dye-stuff or a pigment.
Claim 6
Dependent Claim
26 words
The printing ink according to claim 1, wherein the at least one member of the first component group or a further component is a solid lubricant.
Claim 7
Dependent Claim
25 words
The printing ink according to claim 1, wherein the at least one member of the first component group or a further component enhances sliding friction.
Claim 8
Dependent Claim
22 words
The printing ink according to claim 1, wherein the weight amount relationship between the first and second component groups is approximately 1:3.
Claim 9
Dependent Claim
24 words
The printing ink according to claim 1, wherein the melting of the members of the first component group takes place at approximately 80° C.
Claim 10
Dependent Claim
37 words
The printing ink according to claim 1, wherein the precipitation-temperature of the members of the second and, respectively, the members of further component groups in the fused members of the first component group is approximately 100° C.
Claim 11
Dependent Claim
25 words
The printing ink according to claim 1, wherein the members of the first component group are cetyl alcohol, stearyl alcohol, 12-hydroxy-stearic acid or combinations thereof.
Claim 12
Dependent Claim
29 words
The printing ink according to claim 1, wherein the second component group includes a commercial telomeric acrylic resin enriched with hydroxy-substituents, a partially hydrolyzed polyvinyl acetate or combinations thereof.
Claim 13
Independent Claim
119 words
A method for manufacturing a gravure-printing ink, comprising the steps of: mixing powder, flakes or pellets of members of a first and second component group, each group including at least one member of which members of the first component group have solvent character for members of the second component group said members of said second group being polymers; heating the mixture above the melting point of the members of the first component group and up to the solution-temperature of the members of the second component group in the fused members of the first component group; homogenizing the solution; cooling to ambient temperature; solidifying said mixture in molds with ensuing optional fragmentation or pulverization or solidifying as foil or granules.
Claim 14
Independent Claim
119 words
A method for manufacturing a gravure-printing ink, comprising the steps of: mixing powder, flakes or pellets of members of a first and second component group, each group including at least one member of which members of the first component group have solvent character for members of the second component group said members of said second group being polymers; heating the mixture above the melting point of the members of the first component group and up to the solution-temperature of the members of the second component group in the fused members of the first component group; homogenizing the solution; cooling to ambient temperature; solidifying said mixture in molds with ensuing optional fragmentation or pulverization or solidifying as foil or granules.
Claim 15
Dependent Claim
42 words
The method according to claim 12, further comprising adding at least one third component which is soluble in the molten first component, before during or after the liquification of the first and second components, said third component being a dye-stuff and/or pigment.
References Cited (Backward Citations)
US2264315A
Cited
GB1015926A
Cited
DE2426849A1
Cited
US4069179A
Cited
GB1510190A
Cited
DE2534845A1
Cited
DE2635226A1
Cited
US4267000A
Cited
US4426227A
Cited
DE3138881A1
Cited
DE3101243A1
Cited
EP0067663B1
Cited
EP0206286A1
Cited
DE3524031A1
Cited
DE3625592A1
Cited
US4812354A
Cited
EP0266526A1
Cited
EP0307933A2
Cited
JPH02119798A
Cited
JPH0418393A
Cited
WO1991018065A1
Cited
JPH0475381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-05 | 1999-09-04 | 2000-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-05 | 2003-09-04 | 2004-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-05 | 2007-09-04 | 2008-03-05 | $7700.00 | Window Closed / Lapsed |