US4801473A
Expired / Lapsed
US
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Method for preparing a hot melt ink transparency
Assignee: Fujifilm Dimatix Inc
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Filing: 1987-05-14
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Granted: 1989-01-31
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Expires: 2007-05-14
Abstract
Abstract A transparency includes a transparent substrate such as a polyester material, an ink pattern disposed on one surface of the transparent sheet in the form of three-dimensional ink spots having curved surfaces and a transparent layer covering the ink spots which has an index of refraction approximately the same as that of the ink spots. The transparent layer is applied to the substrate and the ink spots in the form of a liquid coating which wets the surfaces of the substrate and ink spots and spreads over them to produce a transparent layer having a maximum deviation of about 20 degrees from a plane parallel to the substrate.
Inventors
- 👤 Linda T. Creagh
- 👤 Steven F. Fulton
- 👤 Paul A. Hoisington
- 👤 Bruce A. Paulson
- 👤 Robert R. Schaffer
- 👤 Charles W. Spehrley, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:39
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B41; B41M; B41M5/00; B41M5/0041; B41M5/0064; B41M5/0047; B41M5/0052
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
106 words
A method for preparing a projection transparency comprising applying transparent ink to the surface of a transparent substrate to form an ink pattern containing three-dimensional ink spots having a curved surface, applying a transparent liquid coating to the surface of the substrate containing the ink pattern, the coating having a surface tension less than that of the ink spots to form a layer which spreads on the surfaces of the substrate and the ink spots, and solidifying the coating to provide a solid transparent layer which substantiallly covers the ink spots and has an index of refraction approximately the same as that of the ink spots.
Claim 2
Independent Claim
106 words
A method for preparing a projection transparency comprising applying transparent ink to the surface of a transparent substrate to form an ink pattern containing three-dimensional ink spots having a curved surface, applying a transparent liquid coating to the surface of the substrate containing the ink pattern, the coating having a surface tension less than that of the ink spots to form a layer which spreads on the surfaces of the substrate and the ink spots, and solidifying the coating to provide a solid transparent layer which substantiallly covers the ink spots and has an index of refraction approximately the same as that of the ink spots.
Claim 3
Dependent Claim
50 words
A method according to claim 1 wherein the coating is applied so that the surface of the solid transparent layer in the region over the ink spots extends at an angle of no more than about 20 degrees with respect to a plane parallel to the plane of the substrate.
Claim 4
Dependent Claim
13 words
A method according to claim 1 wherein the transparent coating comprises polyurethane material.
Claim 5
Dependent Claim
23 words
A method according to claim 3 wherein the transparent coating is applied in the form of a polyurethane emulsion containing approximately 35% polyurethane.
Claim 6
Dependent Claim
14 words
A method according to claim 4 wherein the polyurethane emulsion contains about 5% methylethylketone.
Claim 7
Dependent Claim
14 words
A method according to claim 4 wherein the polyurethane emulsion contains about 5% N-methylpyrrolidone.
Claim 8
Dependent Claim
14 words
A method according to claim 1 wherein the transparent coating comprises an acrylic material.
Claim 9
Dependent Claim
31 words
A method according to claim 1 wherein the index of refraction of the transparent layer differs from the index of refraction of the ink spots by no more than about 10%.
Claim 10
Dependent Claim
28 words
A method according to claim 8 wherein the index of refraction of the transparent layer differs from that of the ink spots by no more than about 5%.
Claim 11
Dependent Claim
16 words
A method according to claim 1 wherein the transparent liquid coating is applied by roll coating.
Claim 12
Dependent Claim
15 words
A method according to claim 1 wherein the transparent liquid coating is applied by spraying.
Claim 13
Dependent Claim
19 words
A method according to claim 1 wherein the thickness of the transparent liquid coating is adjusted after being applied.
Claim 14
Dependent Claim
19 words
A method according to claim 12 wherein the thickness of the transparent coating is adjusted by using a squeegee.
Claim 15
Dependent Claim
20 words
A method according to claim 12 wherein the thickness of the transparent coating is adjusted by using a doctor blade.
Claim 16
Dependent Claim
20 words
A method according to claim 12 wherein the thickness of the transparent coating is adjusted by using a metering rod.
Claim 17
Independent Claim
81 words
A method for preparing a projection transparency comprising applying transparent ink to the surface of a transparent substrate to form an ink pattern containing three-dimensional ink spots having a curved surface and applying a transparent coating which wets the ink spots and the substrate to the surface of the substrate containing the ink pattern to provide a solid transparent layer which substantially covers the ink spots and has an index of refraction approximately the same as that of the ink spots.
Claim 18
Independent Claim
81 words
A method for preparing a projection transparency comprising applying transparent ink to the surface of a transparent substrate to form an ink pattern containing three-dimensional ink spots having a curved surface and applying a transparent coating which wets the ink spots and the substrate to the surface of the substrate containing the ink pattern to provide a solid transparent layer which substantially covers the ink spots and has an index of refraction approximately the same as that of the ink spots.
Claim 19
Dependent Claim
50 words
A method according to claim 16 wherein the coating is applied so that the surface of the solid transparent layer in the region over the ink spots extends at an angle of no more than about 20 degrees with respect to a plane parallel to the plane of the substrate.
Claim 20
Dependent Claim
13 words
A method according to claim 16 wherein the transparent coating comprises polyurethane material.
Claim 21
Dependent Claim
14 words
A method according to claim 16 wherein the transparent coating comprises an acrylic material.
Claim 22
Dependent Claim
31 words
A method according to claim 16 wherein the index of refraction of the transparent layer differs from the index of refraction of the ink spots by no more than about 10%.
Claim 23
Dependent Claim
28 words
A method according to claim 16 wherein the index of refraction of the transparent layer differs from that of the ink spots by no more than about 5%.
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |