US4032690A
Expired / Lapsed
US
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Thermosensitive recording material
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1975-01-24
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Granted: 1977-06-28
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Expires: 1995-01-24
Abstract
Abstract Thermosensitive recording material for use in thermal printing, which is composed of a coating composition applied on a support, which coating composition comprises (a) a chromogenic compound, (b) an organic acid, (c) a water-soluble binder containing a carboxyl group and having a softening point of 200° C or higher, (d) a filler, (e) a metal salt of a higher fatty acid and (f) a wax, said recording material having a Bekk surface smoothness of 100 to 500 seconds.
Inventors
- 👤 Isao Kohmura
- 👤 Yukio Tahara
- 👤 Kiyoshi Futaki
- 👤 Hiroshi Tange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:14
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/337; B41M5/3375; B41M5/3372; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982; Y10T428/31986
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
186 words
A thermosensitive recording material composed of a coating composition applied as a single layer on a paper, synthetic resin film or textile cloth support, which coating composition comprises (a) a chromogenic compound, (b) an organic acid which melts or vaporizes at room temperature or higher and reacts with the chromogenic compound to develop color, (c) a water-soluble binder containing a carboxyl group and having a softening point of 200° C. or higher, (d) an infusible filler, (e) a metal salt of a higher fatty acid, and (f) a wax, the weight ratio of (a) to (b) being from 1/1 to 1/20, the amount of (c) being 15 to 50% by weight based on the total solids content of the composition, the amount of (d) being 30% to 300% by weight based on the total weight of (a) and (b), the total amount of (e) and (f) being 10% to 200% by weight based on the total amount of (a) and (b), the weight ratio of (e) to (f) being from 1/10 to 10/1, said recording material having a Bekk surface smoothness of 100 to 500 seconds.
Claim 2
Dependent Claim
186 words
A thermosensitive recording material composed of a coating composition applied as a single layer on a paper, synthetic resin film or textile cloth support, which coating composition comprises (a) a chromogenic compound, (b) an organic acid which melts or vaporizes at room temperature or higher and reacts with the chromogenic compound to develop color, (c) a water-soluble binder containing a carboxyl group and having a softening point of 200° C. or higher, (d) an infusible filler, (e) a metal salt of a higher fatty acid, and (f) a wax, the weight ratio of (a) to (b) being from 1/1 to 1/20, the amount of (c) being 15 to 50% by weight based on the total solids content of the composition, the amount of (d) being 30% to 300% by weight based on the total weight of (a) and (b), the total amount of (e) and (f) being 10% to 200% by weight based on the total amount of (a) and (b), the weight ratio of (e) to (f) being from 1/10 to 10/1, said recording material having a Bekk surface smoothness of 100 to 500 seconds.
Claim 3
Dependent Claim
26 words
A thermosensitive recording material according to claim 1, wherein (e) the metal salt of a higher fatty acid is a polyvalent metal salt of stearic acid.
Claim 4
Dependent Claim
22 words
A thermosensitive recording material according to claim 1, wherein (f) the wax is a wax of the higher fatty acid amide type.
Claim 5
Dependent Claim
29 words
A thermosensitive recording material according to claim 1, wherein (f) the wax is a combination of a wax of the higher fatty acid amide type and a petroleum-based wax.
Claim 6
Dependent Claim
17 words
A thermosensitive recording material according to claim 1, wherein (d) the filler is a finely powdered starch.
Claim 7
Dependent Claim
17 words
A thermosensitive recording material according to claim 2, wherein (d) the filler is a finely powdered starch.
Claim 8
Dependent Claim
22 words
A thermosensitive recording material according to claim 6, wherein (f) the wax is a wax of the higher fatty acid amide type.
Claim 9
Dependent Claim
29 words
A thermosensitive recording material according to claim 6, wherein (f) the wax is a combination of a wax of the higher fatty acid amide type and a petroleum-based wax.
Claim 10
Dependent Claim
31 words
A thermosensitive recording material according to claim 1, wherein (c) the water-soluble binder is at least one member selected from the group consisting of styrene-maleic anhydride copolymers, carboxymethyl-celluloses, and carboxyl-modified starches.
Claim 11
Dependent Claim
31 words
A thermosensitive recording material according to claim 6, wherein (c) the water-soluble binder is at least one member selected from the group consisting of styrene-maleic anhydride copolymers, carboxymethylcelluloses, and carboxyl-modified starches.
Claim 12
Dependent Claim
31 words
A thermosensitive recording material according to claim 7, wherein (c) the water-soluble binder is at least one member selected from the group consisting of styrene-maleic anhydride copolymers, carboxymethyl-celluloses, and carboxyl-modified starches.
Claim 13
Dependent Claim
31 words
A thermosensitive recording material according to claim 8, wherein (c) the water-soluble binder is at least one member selected from the group consisting of styrene-maleic anhydride copolymers, carboxymethyl-celluloses, and carboxyl-modified starches.
Claim 14
Dependent Claim
21 words
A thermosensitive recording material according to claim 1, wherein (a) the chromogenic compound is a leuco dyestuff having a lactone ring.
Claim 15
Dependent Claim
17 words
A thermosensitive recording material according to claim 1, wherein (b) the organic acid is a bisphenol compound.
Claim 16
Dependent Claim
28 words
A thermosensitive recording material according to claim 14, wherein (b) the organic acid is at least one member selected from the group consisting of 4,4'-isopropylidenediphenol and 4,4'-(1-methyl-n-hexylidene) diphenol.
Claim 17
Dependent Claim
20 words
A thermosensitive recording material according to claim 1, wherein the supporting material is selected from paper or synthetic resin film.
Claim 18
Dependent Claim
14 words
A thermosensitive recording material according to claim 1 wherein the supporting material is paper.
Claim 19
Dependent Claim
84 words
A thermosetting recording material according to claim 1 wherein (a) is a leuco dyestuff having a lactone ring, (b) is a bisphenol compound, (c) is at least one member selected from the group consisting of styrene-maleic anhydride copolymers, carboxymethylcelluloses, and carboxyl-modified starches, (d) is a finely powdered starch, (e) is a polyvalent metal salt of a higher fatty acid, and (f) is a wax of the higher fatty acid amide type, said recording material having a Bekk surface smoothness of 100 to 500 seconds.
Claim 20
Dependent Claim
29 words
A thermosensitive recording material according to claim 18, wherein (f) the wax is a combination of a wax of the higher fatty acid amide type and a petroleum-based wax.
References Cited (Backward Citations)
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US3539375A
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US3561991A
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US3674535A
Cited
US3895173A
Cited
US3955025A
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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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |