US4022936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record material
Assignee: WTA Inc
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Filing: 1975-04-28
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Granted: 1977-05-10
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Expires: 1995-04-28
Abstract
Abstract A process of making a sensitized record sheet material is disclosed, suitable for developing color in oily, colorless, chromogenic dye-precursor inks applied thereto. Said record sheet material has a light, reactive, coating which comprises a zinc compound and a salicylic acid derivative combined in, and applied from, an aqueous system of basic pH. The coating composition is also disclosed.
Inventors
- 👤 Robert E. Miller
- 👤 Bruce W. Brockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:29
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
A process for manufacturing a sensitized record material comprising the steps of (a) providing a substrate sheet material; (b) coating the substrate with an aqueous coating composition comprising 3,5-substituted salicylic acid, zinc compound selected from zinc oxide, zinc carbonate, zinc phosphate, and zinc phenol sulfonate, and ammonium hydroxide, wherein the 3,5-substituted salicylic acid and the zinc compound are present in a weight ratio of about 1:1 to 1:6 and the ammonium hydroxide is present in an amount to maintain the pH of composition at about 7.5 to 10.0; and (c) drying the coating composition.
Claim 2
Dependent Claim
94 words
A process for manufacturing a sensitized record material comprising the steps of (a) providing a substrate sheet material; (b) coating the substrate with an aqueous coating composition comprising 3,5-substituted salicylic acid, zinc compound selected from zinc oxide, zinc carbonate, zinc phosphate, and zinc phenol sulfonate, and ammonium hydroxide, wherein the 3,5-substituted salicylic acid and the zinc compound are present in a weight ratio of about 1:1 to 1:6 and the ammonium hydroxide is present in an amount to maintain the pH of composition at about 7.5 to 10.0; and (c) drying the coating composition.
Claim 3
Dependent Claim
28 words
The process of claim 1 wherein the 3,5-substituted salicylic acid is present in an amount of about 0.1 to 0.4 grams per square meter of the sheet material.
Claim 4
Dependent Claim
112 words
A process for manufacturing a sensitized record sheet material comprising the steps of (a) providing a substrate sheet material; (b) providing the substrate sheet material with zinc compound selected from the group consisting of zinc oxide, zinc carbonate, zinc phosphate and zinc phenol sulfonate; (c) contacting the zinc compound of the substrate sheet material with a coating of an aqueous system of 3,5-substituted salicylic acid present in a weight ratio to the zinc compound of from about 1:1 to 1:6, having ammonium hydroxide in an amount to yield a pH of about 7.5 to 10.0 on said contact between the 3,5-substituted salicylic acid and the zinc compound; and (d) drying the coating.
Claim 5
Dependent Claim
112 words
A process for manufacturing a sensitized record sheet material comprising the steps of (a) providing a substrate sheet material; (b) providing the substrate sheet material with zinc compound selected from the group consisting of zinc oxide, zinc carbonate, zinc phosphate and zinc phenol sulfonate; (c) contacting the zinc compound of the substrate sheet material with a coating of an aqueous system of 3,5-substituted salicylic acid present in a weight ratio to the zinc compound of from about 1:1 to 1:6, having ammonium hydroxide in an amount to yield a pH of about 7.5 to 10.0 on said contact between the 3,5-substituted salicylic acid and the zinc compound; and (d) drying the coating.
Claim 6
Dependent Claim
28 words
The process of claim 3 wherein the 3,5-substituted salicylic acid is present in an amount of about 0.1 to 0.4 grams per square meter of the sheet material.
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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |