US4923749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal transfer ribbon
Assignee: NCR Voyix Corp
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Filing: 1988-07-25
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Granted: 1990-05-08
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Expires: 2008-07-25
Abstract
Abstract A thermal transfer ribbon includes a substrate which has a thermal sensitive coating and a protective layer. The thermal sensitive coating is a solvent based wax mixture dispersed in a binder mix along with pigments. The protective layer is a water based mixture of ink, alcohol and carbon black which remains nonintegral with the thermal sensitive coating.
Inventors
- 👤 Shashi G. Talvalkar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:02
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38228; B41M5/392; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935; Y10T428/31942; Y10T428/31949; Y10T428/31953; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
134 words
A thermal transfer ribbon comprising a substrate, a thermal sensitive coating which is a mixture containing as essential ingredients about 30 to 60% paraffin wax, about 10 to 40% oxidized, isocyanated hydrocarbon wax, about 5 to 35% carnauba wax, about 5 to 25% acetate copolymer, about 0 to 10% hydracinnamate, and about 35 to 60% iron oxide, and a protective layer between the substrate and the thermal sensitive coating and containing as essential ingredients about 1 to 15% polyvinyl alcohol, about 4 to 30% acrylic primer, about 30 to 60% sucrose benzoate, about 18 to 30% saturated fatty alcohol, and about 8 to 16% carbon black pigment, the thermal sensitive coating being coated on the protective layer and then dried at a temperature wherein the thermal sensitive coating remains nonintegral with the protective layer.
Claim 2
Dependent Claim
134 words
A thermal transfer ribbon comprising a substrate, a thermal sensitive coating which is a mixture containing as essential ingredients about 30 to 60% paraffin wax, about 10 to 40% oxidized, isocyanated hydrocarbon wax, about 5 to 35% carnauba wax, about 5 to 25% acetate copolymer, about 0 to 10% hydracinnamate, and about 35 to 60% iron oxide, and a protective layer between the substrate and the thermal sensitive coating and containing as essential ingredients about 1 to 15% polyvinyl alcohol, about 4 to 30% acrylic primer, about 30 to 60% sucrose benzoate, about 18 to 30% saturated fatty alcohol, and about 8 to 16% carbon black pigment, the thermal sensitive coating being coated on the protective layer and then dried at a temperature wherein the thermal sensitive coating remains nonintegral with the protective layer.
Claim 3
Dependent Claim
24 words
The thermal transfer ribbon of claim 1 wherein the hydracinnamate, in the thermal sensitive coating comprises about 0 to 10% octadecyl, di-tertbutyl, hydroxy hydracinnimate.
Claim 4
Dependent Claim
17 words
The thermal transfer ribbon of claim 1 wherein the protective layer includes about 1 to 10% hydracinnamate.
Claim 5
Dependent Claim
18 words
The thermal transfer ribbon of claim 1 wherein the protective layer includes about 0 to 2% wetting agent.
Claim 6
Dependent Claim
17 words
The thermal transfer ribbon of claim 1 wherein the protective layer includes a trace amount of defoamer.
Claim 7
Dependent Claim
22 words
The thermal transfer ribbon of claim 1 wherein the thermal sensitive coating has a weight of about 7.5 grams per square meter.
Claim 8
Dependent Claim
23 words
The thermal transfer ribbon of claim 1 wherein the protective layer has a weight of about 1.0 to 2.5 grams per square meter.
Claim 9
Dependent Claim
17 words
The thermal transfer ribbon of claim 1 wherein the substrate is 30 to 40 gauge capacitor tissue.
Claim 10
Dependent Claim
17 words
The thermal transfer ribbon of claim 1 wherein the substrate is 14 to 35 gauge polyester film.
Claim 11
Dependent Claim
144 words
A thermal transfer ribbon for use in nonimpact printing comprising a substrate, a thermal sensitive coating which is a mixture containing as essential ingredients about 30 to 60% paraffin wax, about 10 to 40% oxidized, isocyanated hydrocarbon wax, about 5 to 35% carnauba wax, about 5 to 25% acetate copolymer, about 0 to 10% hydracinnamate, and about 35 to 60% iron oxide, and a protective layer between the substrate and the thermal sensitive coating and containing as essential ingredients about 1 to 10% polyvinyl alcohol, about 4 to 30% acrylic primer, about 30 to 60% sucrose benzoate, about 18 to 30% saturated fatty alcohol, about 1 to 10% hydracinnamate, and about 8 to 16% carbon black pigment, the thermal sensitive coating being coated on the protective layer and then dried at a temperature wherein the protective layer remains nonintegral with the thermal sensitive coating.
Claim 12
Dependent Claim
144 words
A thermal transfer ribbon for use in nonimpact printing comprising a substrate, a thermal sensitive coating which is a mixture containing as essential ingredients about 30 to 60% paraffin wax, about 10 to 40% oxidized, isocyanated hydrocarbon wax, about 5 to 35% carnauba wax, about 5 to 25% acetate copolymer, about 0 to 10% hydracinnamate, and about 35 to 60% iron oxide, and a protective layer between the substrate and the thermal sensitive coating and containing as essential ingredients about 1 to 10% polyvinyl alcohol, about 4 to 30% acrylic primer, about 30 to 60% sucrose benzoate, about 18 to 30% saturated fatty alcohol, about 1 to 10% hydracinnamate, and about 8 to 16% carbon black pigment, the thermal sensitive coating being coated on the protective layer and then dried at a temperature wherein the protective layer remains nonintegral with the thermal sensitive coating.
Claim 13
Dependent Claim
18 words
The thermal transfer ribbon of claim 10 wherein the protective layer includes about 0 to 2% wetting agent.
Claim 14
Dependent Claim
17 words
The thermal transfer ribbon of claim 10 wherein the protective layer includes a trace amount of defoamer.
Claim 15
Dependent Claim
38 words
The thermal transfer ribbon of claim 10 wherein the thermal sensitive coating has a weight of about 7.5 grams per square meter and the protective layer has a weight of about 1.0 to 2.5 grams per square meter.
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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) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |