US3901986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink supply transfer medium
Assignee: WTA Inc
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Filing: 1974-01-28
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Granted: 1975-08-26
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Expires: 1994-01-28
Abstract
Abstract An ink supply transfer medium is disclosed. The medium is of such a construction that marking pressure causes a transfer of colored ink material to any surface with which the medium is then in contact. The medium, usually in sheet form, includes a substrate and an ink supply layer with a dye decoloring layer located therebetween. The ink supply layer includes all of the reactive colorless components required to yield a colored marking ink but the components are separated and provide a potential colored mark available on occasion of component release. The decoloring layer includes a continuous polymeric barrier film with a dye decoloring reactant homogeneously dispersed therethroughout. Prior to application of marking pressure, the sheet does not include colored ink and does not appear to include colored ink transfer capabilities. After application of marking pressure, colored ink is produced and transferred and there is no trace of residual, untransferred, colored ink on the sheet.
Inventors
- 👤 Bruce W Brockett
- 👤 Robert E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:00
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/1246; B41M5/128
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
65 words
A PRESSURE-SENSITIVE INK SUPPLY TRANSFER MEDIUM COMPRISING: A. SUBSTRATE OF FLEXIBLE, PRESSURE CONDUCTIVE, MATERIAL, B. FILM LAYER, ON THE SUBSTRATE, OF I. CONTINUOUS POLYMERIC MATRIX BINDER AND II. DYE DECOLORING MATERIAL IN THE AMOUNT OF BETWEEN ABOUT 5-75 PERCENT, BY WEIGHT, OF THE FILM LAYER C. TOPCOAT, ON THE FILM LAYER, OF I. MICROCAPSULES CONTAINING A CHROMOGENIC MATERIAL AND II. MICROCAPSULES CONTAINING A DYE COREACTANT.
Claim 2
Dependent Claim
65 words
A PRESSURE-SENSITIVE INK SUPPLY TRANSFER MEDIUM COMPRISING: A. SUBSTRATE OF FLEXIBLE, PRESSURE CONDUCTIVE, MATERIAL, B. FILM LAYER, ON THE SUBSTRATE, OF I. CONTINUOUS POLYMERIC MATRIX BINDER AND II. DYE DECOLORING MATERIAL IN THE AMOUNT OF BETWEEN ABOUT 5-75 PERCENT, BY WEIGHT, OF THE FILM LAYER C. TOPCOAT, ON THE FILM LAYER, OF I. MICROCAPSULES CONTAINING A CHROMOGENIC MATERIAL AND II. MICROCAPSULES CONTAINING A DYE COREACTANT.
Claim 3
Dependent Claim
12 words
The medium of claim 1 wherein the substrate is a paper sheet.
Claim 4
Dependent Claim
21 words
The medium of claim 1 wherein the microcapsules containing chromogenic material and the microcapsules containing dye coreactant are homogeneously mixed together.
Claim 5
Dependent Claim
21 words
The medium of claim 1 wherein the weight ratio of dye-decoloring material to chromogenic material is between about 2.0 and 200.
Claim 6
Dependent Claim
22 words
The medium of claim 1 wherein the mole ratio of dye decoloring material to coreactant material is between about 0.1 and 10.
Claim 7
Dependent Claim
24 words
The medium of claim 1 wherein the weight ratio of dye decoloring material to microcapsules in the topcoat is between about 0.0125 and 0.75.
Claim 8
Dependent Claim
18 words
The medium of claim 1 wherein the dye decoloring material is substantially homogeneously dispersed throughout the matrix binder.
Claim 9
Dependent Claim
16 words
The medium of claim 7 wherein the dye decoloring material is finely-divided and substantially water insoluble.
Claim 10
Dependent Claim
113 words
A pressure-sensitive ink supply transfer medium comprising a substrate, an ink supply layer, and a dye decoloring layer between the substrate and the ink supply wherein, the substrate is a flexible, substantially two dimensional, pressure-transmitting material, the ink supply layer includes a substantially homogeneously mixed mass of microcapsules containing a liquid solution of substantially colorless but colorable dye material, and microcapsules containing a liquid solution of dye coreactant material, which dye decoloring layer includes a continuous polymeric barrier matrix between the substrate and the ink supply layer and the finely-divided dye decoloring material in the amount of between about 5-7 percent, by weight, of the film layer substantially homogeneously disTributed throughout the matrix.
Claim 11
Dependent Claim
113 words
A pressure-sensitive ink supply transfer medium comprising a substrate, an ink supply layer, and a dye decoloring layer between the substrate and the ink supply wherein, the substrate is a flexible, substantially two dimensional, pressure-transmitting material, the ink supply layer includes a substantially homogeneously mixed mass of microcapsules containing a liquid solution of substantially colorless but colorable dye material, and microcapsules containing a liquid solution of dye coreactant material, which dye decoloring layer includes a continuous polymeric barrier matrix between the substrate and the ink supply layer and the finely-divided dye decoloring material in the amount of between about 5-7 percent, by weight, of the film layer substantially homogeneously disTributed throughout the matrix.
Claim 12
Dependent Claim
106 words
A pressure-sensitive ink supply transfer medium comprising: a. substrate of flexible, pressure conductive, material; b. film layer, on the substrate, of i. continuous polymeric matrix binder and ii. dye decoloring material constituting 5 to 75 percent, by weight, of the film layer c. topcoat, on the film layer, of i. microcapsules containing a chromogenic material in a weight ratio of dye-decoloring material to chromogenic material of 2.0 to 200 and ii. microcapsules containing a dye coreactant in a mole ratio of dye-decoloring material to coreactant material of 0.1 to 10.0 wherein the weight ratio of dye-decoloring material to microcapsules in the topcoat is 0.0125 to 0.75.
Claim 13
Dependent Claim
106 words
A pressure-sensitive ink supply transfer medium comprising: a. substrate of flexible, pressure conductive, material; b. film layer, on the substrate, of i. continuous polymeric matrix binder and ii. dye decoloring material constituting 5 to 75 percent, by weight, of the film layer c. topcoat, on the film layer, of i. microcapsules containing a chromogenic material in a weight ratio of dye-decoloring material to chromogenic material of 2.0 to 200 and ii. microcapsules containing a dye coreactant in a mole ratio of dye-decoloring material to coreactant material of 0.1 to 10.0 wherein the weight ratio of dye-decoloring material to microcapsules in the topcoat is 0.0125 to 0.75.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |