Patent US4282534A successfully refreshed from Google Patents.
US4282534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal recording elements
Assignee: Fujifilm Holdings Corp
•
Filing: 1979-06-26
•
Granted: 1981-08-04
•
Expires: 1999-06-26
Abstract
Abstract A thermal recording element comprising a support having formed thereon a recording layer, a first protective layer of a halogenated polyolefin, polystyrene, polystyrene derivative, halogenated rubber or styrene-vinyltoluene copolymer formed on the recording layer; and a second protective layer of a polymer having strong film strength formed on the first protective layer.
Inventors
- 👤 Fumiaki Shinozaki
- 👤 Tomizo Namiki
- 👤 Masao Kitajima
- 👤 Tomoaki Ikeda
- 👤 Yuzo Mizobuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:25
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/257; G11B7/2572; G11B7/2575; G11B7/254; G11B7/2542; G11B7/242; G11B7/243; G11B2007/24302; G11B2007/2431; G11B2007/24312; G11B2007/24318; G11B2007/24324; G11B2007/24326; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
76 words
A thermal recording element comprising a support having formed thereon directly or indirectly a recording layer, a first protective layer comprising a compound selected from a halogenated polyolefin, polystyrene, a polystyrene derivative, halogenated rubber, and a styrenevinyltoluene copolymer formed on the recording layer, and a second protective layer comprising a polymer having high surface strength formed on the first protective layer, wherein the thickness of the second protective layer is about 0.1 μm to 20 μm.
Claim 2
Dependent Claim
76 words
A thermal recording element comprising a support having formed thereon directly or indirectly a recording layer, a first protective layer comprising a compound selected from a halogenated polyolefin, polystyrene, a polystyrene derivative, halogenated rubber, and a styrenevinyltoluene copolymer formed on the recording layer, and a second protective layer comprising a polymer having high surface strength formed on the first protective layer, wherein the thickness of the second protective layer is about 0.1 μm to 20 μm.
Claim 3
Dependent Claim
13 words
The thermal recording element of claim 1, wherein said support is polyethylene terephthalate.
Claim 4
Dependent Claim
15 words
The thermal recording element of claim 1, wherein said recording layer is a metal layer.
Claim 5
Dependent Claim
19 words
The thermal recording element of claim 1, wherein said recording layer is a layer of Sn, Bi or In.
Claim 6
Dependent Claim
21 words
The thermal recording element of claim 1, wherein said recording layer is a layer of GeS, SnS or PbI 2 .
Claim 7
Dependent Claim
47 words
The thermal recording element of claim 1, wherein said recording layer is composed of a mixture of Sn, Bi or In and GeS, SnS or PbI 2 or composed of a layer of Sn, Bi or In and a layer of GeS, SnS or PbI 2 .
Claim 8
Dependent Claim
20 words
The thermal recording element of claim 1, wherein the thickness of said recording layer is about 50 to 1,000 A.
Claim 9
Dependent Claim
22 words
The thermal recording element of claim 1, wherein the thickness of the first protective layer is about 0.1 μm to 10 μm.
Claim 10
Dependent Claim
22 words
The thermal recording element of claim 1, wherein the thickness of the first protective layer is about 0.15 μm to 5 μm.
Claim 11
Dependent Claim
32 words
The thermal recording element of claim 1, wherein said polymer for the second protective layer has a tensile strength of higher than 40 N/mm 2 as measured in accordance with ASTM-D 638.
Claim 12
Dependent Claim
37 words
The thermal recording element of claim 1, wherein said polymer for the second protective layer is selected from polybutadiene, polyacrylic acid, polymethacrylic acid, polyvinyl butyral, polyacrylonitrile, polyester, polyurethane, polyamide, ethyl cellulose, nylon and the copolymers of them.
Claim 13
Dependent Claim
22 words
The thermal recording element of claim 1, wherein the thickness of the second protective layer is about 0.15 μm to 10 μm.
Claim 14
Dependent Claim
46 words
The thermal recording element of claim 1, wherein said first protective layer consists essentially of a compound selected from a halogenated polyolefin, polystyrene, a polystyrene derivative, halogenated rubber and a styrene-vinyltoluene copolymer, and said second protective layer consists essentially of a polymer having high surface strength.
Claim 15
Dependent Claim
27 words
The thermal recording element of claim 1, wherein said polystyrene derivative is selected from the group consisting of polyhydroxystyrene, polyvinyltoluene, halogenated polystyrene, halogenated polyvinyltoluene and halogenated polyhydroxystyrene.
References Cited (Backward Citations)
US3988501A
Cited
US3984583A
Cited
US3983564A
Cited
US3911444A
Cited
US4067780A
Cited
US4069487A
Cited
US4101907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |