US3906123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-contained pressure-sensitive system
Assignee: Champion International Corp
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Filing: 1973-04-23
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Granted: 1975-09-16
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Expires: 1993-04-23
Abstract
Abstract A self-contained, pressure-sensitive record system is provided which comprises a support having a coating of microscopic, pressure-rupturable microcapsules on the surface of the support, which microcapsules contain a substantially colorless colorreactant material. A continuous, non-permeable, water-insoluble, pressure-rupturable polymeric barrier layer is provided over the microcapsular coating and a third layer in the form of an adsorbent, electron-acceptor material is provided over the barrier layer. Under the application of localized pressure, the polymeric barrier layer and the walls of the microcapsules are ruptured thereby permitting contact between the color-reactant material and the adsorbent, electron-acceptor material which react to provide a distinctive colored mark.
Inventors
- 👤 David N Vincent
- 👤 Ronald R Golden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
92 words
PRESSURE-SENSITIVE RECORD MATERIAL COMPRISING A SUPPORTT CARRYING IN ORDER,, A FRIST LAYER COMPRISING MICROSCOPIC PRESSUREC/RUPTURABLE CAPSULES ON THE SURFACE OF SAID SUPPORT, SAID CAPSULES CONTAINING A SUBSTATIALLY COLORLESS, COLOR-REACTANT MATERIAL SECOND LAYER ADJACENT SAID FIRST LAYER COMPRISING A CONTINUOUS, NON-PERMEABLE, PRESSURE-RUPTURABLE, WATER-INSOLUBLE, POLYMERIC BARRIER LAYER, SAID BARRIER LAYER BEING RUPTURABLE UNDER LOCALIZED PRESSURE AT AN AMBIENT TEMPERATURE IN THE RANGE OF 20*C. A THIRD LAYER ADJACENT SAID SECOND LAYER COMPRISING AN ADSORBENT, ELEVTRON-ACCEPTOR MATERIAL, SAID COLOR-REACTANT MATERIAL AND SAID ELECTRON-ACCEPTOR MATERIAL BEING CAPABLE OF REACTING TO FORM A DISTINCTIVE COLOR UPON CONTACT.
Claim 2
Dependent Claim
92 words
PRESSURE-SENSITIVE RECORD MATERIAL COMPRISING A SUPPORTT CARRYING IN ORDER,, A FRIST LAYER COMPRISING MICROSCOPIC PRESSUREC/RUPTURABLE CAPSULES ON THE SURFACE OF SAID SUPPORT, SAID CAPSULES CONTAINING A SUBSTATIALLY COLORLESS, COLOR-REACTANT MATERIAL SECOND LAYER ADJACENT SAID FIRST LAYER COMPRISING A CONTINUOUS, NON-PERMEABLE, PRESSURE-RUPTURABLE, WATER-INSOLUBLE, POLYMERIC BARRIER LAYER, SAID BARRIER LAYER BEING RUPTURABLE UNDER LOCALIZED PRESSURE AT AN AMBIENT TEMPERATURE IN THE RANGE OF 20*C. A THIRD LAYER ADJACENT SAID SECOND LAYER COMPRISING AN ADSORBENT, ELEVTRON-ACCEPTOR MATERIAL, SAID COLOR-REACTANT MATERIAL AND SAID ELECTRON-ACCEPTOR MATERIAL BEING CAPABLE OF REACTING TO FORM A DISTINCTIVE COLOR UPON CONTACT.
Claim 3
Dependent Claim
14 words
Record material recording to claim 1 wherein said electron-acceptor material is an acidic clay.
Claim 4
Dependent Claim
14 words
Record material according to claim 1 wherein said barrier layer comprises a polyhydroxy polymer.
Claim 5
Dependent Claim
17 words
Record material according to claim 3 wherein said polyhydroxy polymer is polyvinyl alcohol, methyl cellulose or starch.
Claim 6
Dependent Claim
24 words
Record material according to claim 4 wherein the capsule walls of said microcapsules are cross-linked polyvinyl alcohol and said barrier layer is polyvinyl alcohol.
Claim 7
Dependent Claim
21 words
Record material according to claim 5 wherein said capsule walls of said microcapsules comprise polyvinyl alcohol cross-linked by a polyfunctional isocyanate.
Claim 8
Dependent Claim
24 words
Record material according to claim 1 wherein said microcapsules have walls comprising cross-linked polyvinyl alcohol and said barrier layer is a formaldehyde condensation product.
Claim 9
Dependent Claim
12 words
Record material according to claim 7 wherein said barrier layer is melamine-formaldehyde.
Claim 10
Independent Claim
133 words
A METHOD FOR THE PRODUCTION OF A PRESSURE-SENSITIVE RECORD SYSTEM WHICH COMPRISES, PROVIDING A SUBSTRATE, APPLYING A FRIST COATING COMPOSITION TO THE SURFACE OF SAID SUBSTRATE, SAID FRIST COARING COMPOSITION COMPRISING A DISPERSION OF MICROSCOPIC CAPSULES, EACH CAPSULE CONTAINING A COLORLESS, COLORREACTANT MATERIAL, APPLYING A SECOND COATING COMPOSITION OVER SAID FRIST COATING, SAID SECOND COATING COMPOSITION COMPRISING AN AQUEEOUS SOLUTION OF A POLYMERIC MATERIAL, SAID POLYMERIC MATERIAL BEING CAPABLE OF PROVIDING A CONTINUOUS NON-PERMEABLE PRESSURE-REPTURABLE, WATER-INSOLUBLE BARRIER LAYER, AND APPLYING A THIRD COATING COMPOSITION OVER SAID SECOND COATING COMPRISING AN AQUEOUS DISPERSION OF AN ADSORBENT ELECTROACCEPTOR MATERIAL, SAID COLOR-REACTANT MATERIAL AND SAID ELECTRON-ACCEPTOR MATERIAL BEING CAPABLE OF REACTING TO FORM A DISTINCTIVE COLORED MAKR UPON CONTACT, SAID BARRIER LAYER BEING RUPTURABLE UNDER LOCALIZED PRESSURES AT AN AMBIENT TEMPERATURE IN THE RANGE OF 20*-25*C.
Claim 11
Independent Claim
133 words
A METHOD FOR THE PRODUCTION OF A PRESSURE-SENSITIVE RECORD SYSTEM WHICH COMPRISES, PROVIDING A SUBSTRATE, APPLYING A FRIST COATING COMPOSITION TO THE SURFACE OF SAID SUBSTRATE, SAID FRIST COARING COMPOSITION COMPRISING A DISPERSION OF MICROSCOPIC CAPSULES, EACH CAPSULE CONTAINING A COLORLESS, COLORREACTANT MATERIAL, APPLYING A SECOND COATING COMPOSITION OVER SAID FRIST COATING, SAID SECOND COATING COMPOSITION COMPRISING AN AQUEEOUS SOLUTION OF A POLYMERIC MATERIAL, SAID POLYMERIC MATERIAL BEING CAPABLE OF PROVIDING A CONTINUOUS NON-PERMEABLE PRESSURE-REPTURABLE, WATER-INSOLUBLE BARRIER LAYER, AND APPLYING A THIRD COATING COMPOSITION OVER SAID SECOND COATING COMPRISING AN AQUEOUS DISPERSION OF AN ADSORBENT ELECTROACCEPTOR MATERIAL, SAID COLOR-REACTANT MATERIAL AND SAID ELECTRON-ACCEPTOR MATERIAL BEING CAPABLE OF REACTING TO FORM A DISTINCTIVE COLORED MAKR UPON CONTACT, SAID BARRIER LAYER BEING RUPTURABLE UNDER LOCALIZED PRESSURES AT AN AMBIENT TEMPERATURE IN THE RANGE OF 20*-25*C.
Claim 12
Dependent Claim
31 words
The method of claim 9 wherein said second coating composition contains a surface active agent, said surface active agent promoting the complete wetting of said capsule coating by said second coating.
Claim 13
Dependent Claim
14 words
The method of claim 9 wherein said second coating composition comprises a polyhydroxy polymer.
Claim 14
Dependent Claim
15 words
The method of claim 11 wherein said polyhydroxy polymer is polyvinyl alcohol, methylcellulose or starch.
Claim 15
Dependent Claim
23 words
The method of claim 12 wherein said second coating composition additionally contains a cross-linking agent for rendering the polymeric material contained therein water-insoluble.
Claim 16
Dependent Claim
28 words
The method of claim 9 wherein said third coating composition additionally contains a cross-linking agent for rapidly rendering the polymeric material contained in said second coating composition water-insoluble.
Claim 17
Dependent Claim
12 words
The method of claim 14 wherein said cross-linking agent is sodium borate.
Claim 18
Independent Claim
131 words
A method for the production of a pressure-sensitive record system, which comprises providing a substrate, applying a first coating composition to said substrate, said first coating composition comprising an aqueous dispersion of microscopic capsules containing a colorless, color-reactant material, said dispersion also including a polymeric binding agent, said binding agent being capable of forming a continuous, non-permeable pressure-rupturable, water-insoluble polymeric barrier layer over said pressure-rupturable microcapsules, applying a second coating composition comprising an aqueous solution of a cross-linking agent to said first coating in order to cross-link said polymeric binder and form a pressure-rupturable, water-insoluble polymeric barrier layer, and applying a third coating composition comprising an adsorbent, electron-acceptor material over said second coating, said color-reactant material and said electron-acceptor material being capabLe of reacting to form a distinctive color upon contact.
Claim 19
Independent Claim
131 words
A method for the production of a pressure-sensitive record system, which comprises providing a substrate, applying a first coating composition to said substrate, said first coating composition comprising an aqueous dispersion of microscopic capsules containing a colorless, color-reactant material, said dispersion also including a polymeric binding agent, said binding agent being capable of forming a continuous, non-permeable pressure-rupturable, water-insoluble polymeric barrier layer over said pressure-rupturable microcapsules, applying a second coating composition comprising an aqueous solution of a cross-linking agent to said first coating in order to cross-link said polymeric binder and form a pressure-rupturable, water-insoluble polymeric barrier layer, and applying a third coating composition comprising an adsorbent, electron-acceptor material over said second coating, said color-reactant material and said electron-acceptor material being capabLe of reacting to form a distinctive color upon contact.
Claim 20
Dependent Claim
14 words
The method of claim 16 wherein said polymeric binding agent is a polyhydroxy polymer.
Claim 21
Dependent Claim
15 words
The method of claim 17 wherein said polyhydroxy polymer is polyvinyl alcohol, methylcellulose or starch.
Claim 22
Dependent Claim
19 words
The method of claim 17 wherein said polymeric binder is polyvinyl alcohol and said cross-linking agent is sodium borate.
Claim 23
Independent Claim
144 words
A method for the production of a pressure-sensitive record system which comprises, providing a substrate, coating the surface of said substrate with a composition comprising an aqueous dispersion of microscopic capsules containing a substantially colorless, color-forming material, said dispersion also including a polymeric binding agent, said binding agent being capable of forming a continuous, non-permeable, pressure-rupturable, water-insoluble, polymeric barrier layer over said pressure-rupturable microcapsules, applying a second coating composition containing an adsorbent, electron-acceptor material and a cross-linking agent for rapidly rendering said polymeric binding agent water-insoluble, over said microcapsules, said polymeric binding agent and said cross-linking agent reacting to form a continuous, non-permeable, pressure-rupturable, water-insoluble, polymeric barrier layer over said microcapsules, said barrier layer being rupturable under localized pressures at an ambient temperature in the range of 20*-25*C., said color-forming material and said electron-acceptor material being capable of forming a distinctive color upon contact.
Claim 24
Independent Claim
144 words
A method for the production of a pressure-sensitive record system which comprises, providing a substrate, coating the surface of said substrate with a composition comprising an aqueous dispersion of microscopic capsules containing a substantially colorless, color-forming material, said dispersion also including a polymeric binding agent, said binding agent being capable of forming a continuous, non-permeable, pressure-rupturable, water-insoluble, polymeric barrier layer over said pressure-rupturable microcapsules, applying a second coating composition containing an adsorbent, electron-acceptor material and a cross-linking agent for rapidly rendering said polymeric binding agent water-insoluble, over said microcapsules, said polymeric binding agent and said cross-linking agent reacting to form a continuous, non-permeable, pressure-rupturable, water-insoluble, polymeric barrier layer over said microcapsules, said barrier layer being rupturable under localized pressures at an ambient temperature in the range of 20*-25*C., said color-forming material and said electron-acceptor material being capable of forming a distinctive color upon contact.
Claim 25
Dependent Claim
13 words
The method of claim 20, wherein said polymeric binding agent is polyvinyl alcohol.
Claim 26
Dependent Claim
12 words
The method of claim 20 wherein said cross-linking agent is sodium borate.
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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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |