Patent US4352855A successfully refreshed from Google Patents.
US4352855A
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US
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Transfer-onto-plain paper type pressure-sensitive copying paper
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1981-02-26
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Granted: 1982-10-05
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Expires: 2001-02-26
Abstract
Abstract A transfer-onto-plain paper type pressure-sensitive copying paper which is excellent in transferability and coloring property could be obtained by coating in monolayer to one surface of a substrate a colorless electron-donating color former, a colorless electron-accepting color developer which reacts with said color former to give a colored product, and a wax mixture comprising an amide wax selected from the group consisting of saturated fatty acid amides having 14 or less carbon atoms and unsaturated fatty acid amides having one or more unsaturated bonds, and other wax.
Inventors
- 👤 Shigetoshi Hiraishi
- 👤 Sadao Morishita
- 👤 Toshihiko Matsushita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:55
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
91 words
A transfer-onto-plain paper type pressure-sensitive copy sheet produced by single coating in monolayer to one surface of a support, a colorless electron-donating color former, a colorless electron-attracting color developer which reacts with said color former to give a colored product, and a wax mixture comprising (1) an amide wax selected from the group consisting of saturated fatty acid amides having 14 or less carbon atoms and unsaturated fatty acid amides having one or more unsaturated bonds present in an amount which is effective to prevent premature coloration and (2) other wax.
Claim 2
Dependent Claim
91 words
A transfer-onto-plain paper type pressure-sensitive copy sheet produced by single coating in monolayer to one surface of a support, a colorless electron-donating color former, a colorless electron-attracting color developer which reacts with said color former to give a colored product, and a wax mixture comprising (1) an amide wax selected from the group consisting of saturated fatty acid amides having 14 or less carbon atoms and unsaturated fatty acid amides having one or more unsaturated bonds present in an amount which is effective to prevent premature coloration and (2) other wax.
Claim 3
Dependent Claim
37 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 1, wherein the support is selected from the group consisting of paper, nonwoven fabric, plastics film, synthetic paper, metallic foil and composite sheets obtained by combining them.
Claim 4
Dependent Claim
27 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 1, wherein both the color former and the color developer or either of them has been microencapsulated.
Claim 5
Dependent Claim
32 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 3, wherein the microencapsulation is carried out by any of a monomer polymerization method, a phase separation method and a spray-drying method.
Claim 6
Dependent Claim
30 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 1, wherein the amount of the amide wax used ranges from 0.01 to 60% of the total coating color amount.
Claim 7
Dependent Claim
21 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 1 wherein the amide wax is an unsaturated fatty acid amide.
Claim 8
Dependent Claim
17 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 6 wherein the amide wax is oleamide.
Claim 9
Dependent Claim
17 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 6 wherein the amide wax is erucamide.
Claim 10
Dependent Claim
17 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 6 wherein the amide wax is ricinoleamide.
Claim 11
Dependent Claim
25 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 6 wherein the amide wax is caproleamide, myristoleamide, oleamide, elaidamide, linoleamide, erucamide, ricinoleamide, or linolenamide.
Claim 12
Dependent Claim
26 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 1 wherein the amide wax is caproamide, caprylamide, pelargonamide, capramide, lauramide, tridecylic acid amide, or myristamide.
Claim 13
Dependent Claim
17 words
A transfer-onto-plain paper type pressure-sensitive copying sheet according to claim 11 wherein the amide wax is lauramide.
References Cited (Backward Citations)
US4139218A
Cited
US4262935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-04 | 1986-04-05 | 1986-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-04 | 1990-04-05 | 1990-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-04 | 1994-04-05 | 1994-10-05 | $7700.00 | Window Closed / Lapsed |