Patent US4988563A successfully refreshed from Google Patents.
US4988563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal transfer ribbon with protective layer
Assignee: NCR Voyix Corp
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Filing: 1988-05-10
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Granted: 1991-01-29
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Expires: 2008-05-10
Abstract
Abstract A thermal transfer ribbon includes a substrate which has a thermal sensitive coating and a protective coating. The thermal sensitive coating is a wax mixture dispersed in a binder mix along with pigments. The protective coating is a wax-copolymer mixture for substantially reducing or eliminating ribbon offset.
Inventors
- 👤 Mary A. Wehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:06
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/382; B41M5/385; B41M5/392; B41M5/426; B41M5/44; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/25; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
A thermal transfer ribbon comprising a substrate, a thermal sensitive coating covering the substrate on one side thereof and which thermal sensitive coating is a mixture containing as essential ingredients about 5 to 35% hydrocarbon wax, about 25 to 65% paraffin wax, about 5 to 35% carnauba wax, binding material of about 5 to 25% ethylene vinyl acetate copolymer, sensible material of about 1 to 55% iron oxide, a pigment of about 1 to 35% black amorphous powder and a transfer agent of about 1 to 25% sucrose benzoate, all by dry weight, and a protective layer covering the thermal sensitive coating on the side thereof distal from the substrate and containing as essential ingredients binding material of about 10 to 60% ethylene vinyl acetate copolymer and about 40 to 90% paraffin wax, by dry weight.
Claim 2
Dependent Claim
136 words
A thermal transfer ribbon comprising a substrate, a thermal sensitive coating covering the substrate on one side thereof and which thermal sensitive coating is a mixture containing as essential ingredients about 5 to 35% hydrocarbon wax, about 25 to 65% paraffin wax, about 5 to 35% carnauba wax, binding material of about 5 to 25% ethylene vinyl acetate copolymer, sensible material of about 1 to 55% iron oxide, a pigment of about 1 to 35% black amorphous powder and a transfer agent of about 1 to 25% sucrose benzoate, all by dry weight, and a protective layer covering the thermal sensitive coating on the side thereof distal from the substrate and containing as essential ingredients binding material of about 10 to 60% ethylene vinyl acetate copolymer and about 40 to 90% paraffin wax, by dry weight.
Claim 3
Dependent Claim
18 words
The thermal transfer ribbon of claim 1 wherein the thermal sensitive coating includes about 1 to 20% polyethylene.
Claim 4
Dependent Claim
18 words
The thermal transfer ribbon of claim 1 wherein the thermal sensitive coating includes about 1 to 5% oleate.
Claim 5
Dependent Claim
24 words
The thermal transfer ribbon of claim 1 wherein the thermal sensitive coating has a weight of about 4 to 11 grams per square meter.
Claim 6
Dependent Claim
23 words
The thermal transfer ribbon of claim 1 wherein the protective layer has a weight of about 2 to 5 grams per square meter.
Claim 7
Dependent Claim
16 words
THe thermal transfer ribbon of claim 1 wherein the hydrocarbon wax is an oxidized, isocyanated wax.
Claim 8
Dependent Claim
21 words
The thermal transfer ribbon of claim 1 wherein the paraffin wax comprises a mixture of solid hydrocarbons of the methane series.
Claim 9
Dependent Claim
146 words
A thermal transfer ribbon for use in nonimpact printing comprising a substrate, a functional coating covering the substrate on one side thereof and which functional coating is a mixture containing as essential ingredients about 5 to 35% hydrocarbon wax, about 25 to 65% paraffin wax, about 5 to 35% carnauba wax, about 1 to 20% low molecular weight polyethylene, binding material of about 5 to 25% ethylene vinyl acetate copolymer, sensible material of about 1 to 55% iron oxide, a pigment of about 1 to 35% black amorphous powder and a transfer agent of about 1 to 25% sucrose benzoate, all by dry weight, and a protective layer covering the functional coating on the side thereof distal from the substrate and containing as essential ingredients binding material of about 10 to 60% ethylene vinyl acetate copolymer and about 40 to 90% paraffin wax, by dry weight.
Claim 10
Dependent Claim
146 words
A thermal transfer ribbon for use in nonimpact printing comprising a substrate, a functional coating covering the substrate on one side thereof and which functional coating is a mixture containing as essential ingredients about 5 to 35% hydrocarbon wax, about 25 to 65% paraffin wax, about 5 to 35% carnauba wax, about 1 to 20% low molecular weight polyethylene, binding material of about 5 to 25% ethylene vinyl acetate copolymer, sensible material of about 1 to 55% iron oxide, a pigment of about 1 to 35% black amorphous powder and a transfer agent of about 1 to 25% sucrose benzoate, all by dry weight, and a protective layer covering the functional coating on the side thereof distal from the substrate and containing as essential ingredients binding material of about 10 to 60% ethylene vinyl acetate copolymer and about 40 to 90% paraffin wax, by dry weight.
Claim 11
Dependent Claim
17 words
The thermal transfer ribbon of claim 8 wherein the functional coating includes about 1 to 5% oleate.
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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) | 1994-01-28 | 1994-07-30 | 1995-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-28 | 1998-07-30 | 1999-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-28 | 2002-07-30 | 2003-01-29 | $7700.00 | Window Closed / Lapsed |