Patent US4810119A successfully refreshed from Google Patents.
US4810119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistive ribbon for high resolution printing
Assignee: IBM Information Products Corp
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Filing: 1987-10-30
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Granted: 1989-03-07
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Expires: 2007-10-30
Abstract
Abstract An improved thermal transfer resistive ribbon usable in high resolution printing comprising a dual resistive layer formed of a first layer of low resistivity and a second layer of high resistivity, method of production thereof, use thereof and apparatus including the same.
Inventors
- 👤 Ali Afzali-Ardakani
- 👤 Ronald T. Cannavaro
- 👤 Walter Crooks
- 👤 Mukesh Desai
- 👤 Keith S. Pennington
- 👤 Jean-Piet Hoekstra
- 👤 Eva E. Simonyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:59
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/3825; B41J; B41J31/00; B41J31/05; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
210 words
An apparatus for recording, comprising: a recording medium comprised of an anistropic resistive dual layer characterized by areas of low resistivity in the direction of heat transfer for printing, a thin electrically conductive layer over said resistive layer serving as an electrical current return path and a fusible ink layer as an uppermost layer, said resistive dual layer comprising a first layer of low resistivity remote from said conductive layer and a second layer of high resistivity adjacent said conductive layer said low resistivity layer having a continuous series of alternating, substantially uniform valleys and peaks across the surface thereof, said valleys being essentially completely filled by said high resistivity layer having a thickness substantially the same as the peak to valley distance; and a multi-stylus recording head for providing patterns of electrical current through selected regions of said resistive layer, where said electrical currents are localized in the regions of said resistive layer contacted by the styli which were energized by said electrical currents, said localized electrical currents being sufficiently dense to provide sufficient resistive heating to heat regions of said fusible ink layer about coextensive with said selected regions of said resistive layer sufficient to soften said regions of said ink layer for transfer to a receiving surface.
Claim 2
Independent Claim
210 words
An apparatus for recording, comprising: a recording medium comprised of an anistropic resistive dual layer characterized by areas of low resistivity in the direction of heat transfer for printing, a thin electrically conductive layer over said resistive layer serving as an electrical current return path and a fusible ink layer as an uppermost layer, said resistive dual layer comprising a first layer of low resistivity remote from said conductive layer and a second layer of high resistivity adjacent said conductive layer said low resistivity layer having a continuous series of alternating, substantially uniform valleys and peaks across the surface thereof, said valleys being essentially completely filled by said high resistivity layer having a thickness substantially the same as the peak to valley distance; and a multi-stylus recording head for providing patterns of electrical current through selected regions of said resistive layer, where said electrical currents are localized in the regions of said resistive layer contacted by the styli which were energized by said electrical currents, said localized electrical currents being sufficiently dense to provide sufficient resistive heating to heat regions of said fusible ink layer about coextensive with said selected regions of said resistive layer sufficient to soften said regions of said ink layer for transfer to a receiving surface.
Claim 3
Dependent Claim
25 words
The apparatus of claim 2 wherein the resistive layer is a dual resistive layer comprising a low resistivity layer that has been calendered and embossed.
Claim 4
Dependent Claim
29 words
The apparatus of claim 1 wherein the peak to valley distance is about 1 to 10 microns and the peak to peak distance is about 5 to 50 microns.
Claim 5
Dependent Claim
19 words
The apparatus of claim 3 wherein the center valley to center valley distance is about 5 to 50 micron.
Claim 6
Dependent Claim
42 words
The apparatus of claim 4 wherein the peak to valley distance is about 3 to 5 microns, the peak to peak distance is about 10 to 25 microns and the center valley to center valley distance is about 10 to 25 microns.
Claim 7
Dependent Claim
33 words
The apparatus of claim 1 wherein the low resistivity layer has a resistivity of about 50 to 400 ohm/sq and the high resistivity layer has a resistivity of about 1000 to 5000 ohm/sq.
Claim 8
Dependent Claim
33 words
The apparatus of claim 6 wherein the low resistivity layer has a resistivity of about 100 to 200 ohm/sq and the high resistivity layer has a resistivity of about 1000 to 2000 ohm/sq.
Claim 9
Dependent Claim
120 words
A thermal transfer resistive ribbon comprised of an anistropic resistive dual layer characterized by areas of low resistivity in the direction of heat transfer for printing, a thin electrically conductive layer over said resistive layer serving as an electrical current return path and a fusible link layer as an uppermost layer, said resistive dual layer comprising a first layer of low resistivity remote from said conductive layer and a second layer of high resistivity adjacent said conductive layer said low resistivity layer having a continuous series of alternating, substantially uniform valleys and peaks across the surface thereof, said valleys being essentially completely filled by said high resistivity layer having a thickness substantially the same as the peak to valley distance.
Claim 10
Dependent Claim
120 words
A thermal transfer resistive ribbon comprised of an anistropic resistive dual layer characterized by areas of low resistivity in the direction of heat transfer for printing, a thin electrically conductive layer over said resistive layer serving as an electrical current return path and a fusible link layer as an uppermost layer, said resistive dual layer comprising a first layer of low resistivity remote from said conductive layer and a second layer of high resistivity adjacent said conductive layer said low resistivity layer having a continuous series of alternating, substantially uniform valleys and peaks across the surface thereof, said valleys being essentially completely filled by said high resistivity layer having a thickness substantially the same as the peak to valley distance.
Claim 11
Dependent Claim
28 words
The thermal transfer resistive ribbon of claim 8 wherein the resistive layer is a dual resistive layer comprising a low resistivity layer that has been calendered and embossed.
Claim 12
Dependent Claim
32 words
The thermal transfer resistive ribbon of claim 8 wherein the peak to valley distance is about 1 to 10 microns and the peak to peak distance is about 5 to 50 microns.
Claim 13
Dependent Claim
22 words
The thermal transfer resistive ribbon of claim 10 wherein the center valley to center valley distance is about 5 to 50 microns.
Claim 14
Dependent Claim
45 words
The thermal transfer resistive ribbon of claim 11 wherein the peak to valley distance is about 3 to 5 microns, the peak to peak distance is about 10 to 25 microns and the center valley to center valley distance is about 10 to 25 microns.
Claim 15
Dependent Claim
36 words
The thermal transfer resistive ribbon of claim 8 wherein the low resistivity layer has a resistivity of about 50 to 400 ohm/sq and the high resistivity layer has a resistivity of about 1000 to 5000 ohm/sq.
Claim 16
Dependent Claim
36 words
The thermal transfer resistive ribbon of claim 13 wherein the low resistivity layer has a resistivity of about 100 to 200 ohm/sq and the high resistivity layer has a resistivty of about 1000 to 2000 ohm/sq.
Claim 17
Dependent Claim
269 words
An improved method for high resolution printing in which a fusible ink image is transferred to a receiving substrate, which method comprises: providing a fusible ink transfer medium comprising a resistive layer, a thin electrically conductive layer over said resistive layer and a fusible ink layer as an outermost layer remote from said resistive layer, said resistive layer being a dual resistive layer comprising a first layer of low resistivity remote from said conductive layer and a second layer of high resistivity adjacent said conductive layer said low resistivity layer having a continuous series of alternating, substantially uniform valleys and peaks across the surface thereof, said valleys being essentially completely filled by said high resistivity layer having a thickness substantially the same as the peak to valley distance; locating a multi-stylus recording head capable of providing electrical current pulses in selected ones of said recoding styli in contact with said resistive layer applying electrical current pulses through selected ones of said recording styli to produce high density localized currents in the regions of said resistive layer in contact with said selected energized styli, said electrical currents providing resistive heating in the regions of said thin electrically conductive layer about coextensive with said resistive layer regions; contacting said fusible ink layer with said receiving substrate while providing sufficient heating by means of said resistive heating in the regions of said thin electrically conductive layer about coextensive with said resistive layer regions to soften regions of said fusible ink layer about coextensive with said resistive layer regions to transfer said coextensive regions of said fusible ink layer to said receiving substrate.
Claim 18
Dependent Claim
269 words
An improved method for high resolution printing in which a fusible ink image is transferred to a receiving substrate, which method comprises: providing a fusible ink transfer medium comprising a resistive layer, a thin electrically conductive layer over said resistive layer and a fusible ink layer as an outermost layer remote from said resistive layer, said resistive layer being a dual resistive layer comprising a first layer of low resistivity remote from said conductive layer and a second layer of high resistivity adjacent said conductive layer said low resistivity layer having a continuous series of alternating, substantially uniform valleys and peaks across the surface thereof, said valleys being essentially completely filled by said high resistivity layer having a thickness substantially the same as the peak to valley distance; locating a multi-stylus recording head capable of providing electrical current pulses in selected ones of said recoding styli in contact with said resistive layer applying electrical current pulses through selected ones of said recording styli to produce high density localized currents in the regions of said resistive layer in contact with said selected energized styli, said electrical currents providing resistive heating in the regions of said thin electrically conductive layer about coextensive with said resistive layer regions; contacting said fusible ink layer with said receiving substrate while providing sufficient heating by means of said resistive heating in the regions of said thin electrically conductive layer about coextensive with said resistive layer regions to soften regions of said fusible ink layer about coextensive with said resistive layer regions to transfer said coextensive regions of said fusible ink layer to said receiving substrate.
Claim 19
Dependent Claim
25 words
The method of claim 15 wherein the resistive layer is a dual resistive layer comprising a low resistivity layer that has been calendered and embossed.
Claim 20
Dependent Claim
29 words
The method of claim 15 wherein the peak to valley distance is about 1 to 10 microns and the peak to peak distance is about 5 to 50 microns.
Claim 21
Dependent Claim
19 words
The method of claim 17 wherein the center valley to center valley distance is about 5 to 50 micrors.
Claim 22
Dependent Claim
42 words
The method of claim 18 wherein the peak to valley distance is about 3 to 5 microns the peak to peak distance is about 10 to 25 microns and the center valley to center valley distance is about 10 to 25 microns.
Claim 23
Dependent Claim
33 words
The method of claim 15 wherein the low resistivity layer has a resistivity of about 50 to 400 ohm/sq and the high resistivity layer has a resistivity of about 1000 to 5000 ohm/sq.
Claim 24
Dependent Claim
33 words
The method of claim 20 wherein the low resistivity layer has a resistivity of about 100 to 200 ohm/sq and the high resistivity layer has a resistivity of about 1000 to 2000 ohm/sq.
Claim 25
Independent Claim
142 words
The method for preparing a thermal transfer resistive ribbon comprising: (1) depositing a thermal transfer resistive ribbon low resistivity layer having a resistivity of about 50 to 400 ohm/sq on a substrate; (2) calendering and embossing said low resistivity layer to form a continuous series of alternating substantially uniform valleys and peaks across the surface thereof; (3) coating a layer of higher resistivity over said layer of low resistivity to a thickness of approximately sufficient to fill said valleys, the layer of higher resistivity having a resistivity of about 1000 to 5000 ohm/sq; (4) applying a thin electrically conductive layer over said layer of higher resistivity (5) applying a thermal transfer resistive ribbon fusible ink layer over said thin metal layer to form a thermal transfer resistive ribbon on said substrate and (6) separating said thermal transfer resistive ribbon from said substrate.
Claim 26
Independent Claim
142 words
The method for preparing a thermal transfer resistive ribbon comprising: (1) depositing a thermal transfer resistive ribbon low resistivity layer having a resistivity of about 50 to 400 ohm/sq on a substrate; (2) calendering and embossing said low resistivity layer to form a continuous series of alternating substantially uniform valleys and peaks across the surface thereof; (3) coating a layer of higher resistivity over said layer of low resistivity to a thickness of approximately sufficient to fill said valleys, the layer of higher resistivity having a resistivity of about 1000 to 5000 ohm/sq; (4) applying a thin electrically conductive layer over said layer of higher resistivity (5) applying a thermal transfer resistive ribbon fusible ink layer over said thin metal layer to form a thermal transfer resistive ribbon on said substrate and (6) separating said thermal transfer resistive ribbon from said substrate.
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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) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |