Patent US4096314A successfully refreshed from Google Patents.
US4096314A
Expired / Lapsed
US
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Pressure-sensitive transfer sheet
Assignee: Kores Holding Zug AG
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Filing: 1976-06-01
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Granted: 1978-06-20
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Expires: 1996-06-01
Abstract
Abstract A pressure-sensitive transfer sheet, includes a carrier sheet having at least one surface portion, a substrate disposed on the surface portion and a transfer layer disposed on the substrate. The substrate includes two chemical compositions which react together under pressure contact in order to change the color of one and the transfer layer transfers by pressure the new color to an object.
Inventors
- 👤 Manuel Cespon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:55
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/1246; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
A pressure-sensitive transfer sheet which can be handled in clean manner, consisting essentially of: (1) a carrier sheet; (2) a color-changing substrate on one side thereof comprising an acid component and, separated therefrom but in juxtaposition thereto, an acid activable dye component, and (3) a wax coating overlying said substrate, said wax being selected from the group consisting of carnauba wax, amide wax, polyethylene wax, hard wax, micro-wax, ceresine wax, ozocerite, and mixtures thereof.
Claim 2
Dependent Claim
74 words
A pressure-sensitive transfer sheet which can be handled in clean manner, consisting essentially of: (1) a carrier sheet; (2) a color-changing substrate on one side thereof comprising an acid component and, separated therefrom but in juxtaposition thereto, an acid activable dye component, and (3) a wax coating overlying said substrate, said wax being selected from the group consisting of carnauba wax, amide wax, polyethylene wax, hard wax, micro-wax, ceresine wax, ozocerite, and mixtures thereof.
Claim 3
Dependent Claim
21 words
A transfer sheet as claimed in claim 12, wherein said acid component and said acid activable dye component are separate layers.
Claim 4
Dependent Claim
21 words
A transfer sheet as claimed in claim 1, wherein said acid-activable dye component is in solution and said solution is micro-encapsulated.
Claim 5
Dependent Claim
16 words
A transfer sheet as claimed in claim 1, wherein said acid component is an acid clay.
Claim 6
Dependent Claim
20 words
A transfer sheet as claimed in claim 1, wherein said acid component is a phenolic compound having acid terminal groups.
Claim 7
Dependent Claim
26 words
A transfer sheet as claimed in claim 1, wherein said acid component is a chloride of a metal having an atomic weight between 50 and 66.
Claim 8
Dependent Claim
15 words
A transfer sheet as claimed in claim 6, wherein said metal chloride is zinc chloride.
References Cited (Backward Citations)
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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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |