Patent US4760012A successfully refreshed from Google Patents.
US4760012A
Expired / Lapsed
US
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Signal recording disk
Assignee: Panasonic Holdings Corp
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Filing: 1987-08-28
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Granted: 1988-07-26
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Expires: 2007-08-28
Abstract
Abstract A signal recording disk having an adhesive resin layer formed on a recording layer. The adhesive resin layer contains at least an epoxy group-containing compound, thereby preventing the recording layer from being degraded for a long period of time.
Inventors
- 👤 Hideaki Mochizuki
- 👤 Tooru Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:47
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/256; G11B7/254; G11B7/242; G11B7/243; G11B2007/24302; G11B2007/24316; G11B2007/24318; G11B2007/2432; G11B7/253; G11B7/2533; G11B7/2534; G11B7/258; G11B7/2585; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
A signal recording disk comprising a recording layer containing metal formed on a substrate, and an adhesive resin composition layer formed on said recording layer, said adhesive resin composition layer containing an acrylic monomer, a radical former and at least an epoxy group-containing compound wherein the epoxy value in said resin composition layer is at least 0.005, whereby said adhesive resin composition layer prevents said metal in said recording layer from being oxidized in a high temperature and high humidity atmosphere.
Claim 2
Dependent Claim
81 words
A signal recording disk comprising a recording layer containing metal formed on a substrate, and an adhesive resin composition layer formed on said recording layer, said adhesive resin composition layer containing an acrylic monomer, a radical former and at least an epoxy group-containing compound wherein the epoxy value in said resin composition layer is at least 0.005, whereby said adhesive resin composition layer prevents said metal in said recording layer from being oxidized in a high temperature and high humidity atmosphere.
Claim 3
Dependent Claim
41 words
A signal recording disk as claimed in claim 1, wherein the radical former in the adhesive resin composition layer is decomposed under the irradiation of ultraviolet rays to form radical species thereby enabling the adhesive resin composition layer to be cured.
Claim 4
Dependent Claim
41 words
A signal recording disk as claimed in claim 1, wherein the adhesive resin composition layer can rapidly be cured under a relatively low temperature by the incorporation of a radical former composed of a peroxide in combination with an amine compound.
Claim 5
Dependent Claim
18 words
A signal recording disk as claimed in claim 1, wherein, a plastic substrate is used as the substrate.
Claim 6
Dependent Claim
20 words
A signal recording disk as claimed in claim 1, wherein the recording layer is a thin film of tellurium suboxide.
Claim 7
Dependent Claim
17 words
A signal recording disk as claimed in claim 1, wherein the recording layer comprises an aluminum film.
Claim 8
Dependent Claim
82 words
A signal recording disk comprising two transparent resin substrates each formed thereon a recording layer composed of a tellurium suboxide, and an adhesive resin layer for adhering the two substrates each at the recording layer, the adhesive resin layer containing an acrylic monomer, a radical former and an epoxy compound and having an epoxy value of at least 0.005, whereby said adhesive resin layer prevents tellurium contained in said recording layer from being oxidized in a high temperature and high humidity atmosphere.
Claim 9
Dependent Claim
82 words
A signal recording disk comprising two transparent resin substrates each formed thereon a recording layer composed of a tellurium suboxide, and an adhesive resin layer for adhering the two substrates each at the recording layer, the adhesive resin layer containing an acrylic monomer, a radical former and an epoxy compound and having an epoxy value of at least 0.005, whereby said adhesive resin layer prevents tellurium contained in said recording layer from being oxidized in a high temperature and high humidity atmosphere.
Claim 10
Dependent Claim
81 words
A signal recording disk comprising an aluminum reflection layer formed on a transparent resin substrate having a train of signal bits previously formed thereon, and an adhesive resin layer formed on the reflection layer, the adhesive resin layer containing an acrylic monomer, a radical former, and an epoxy compound and having an epoxy value of at least 0.005, whereby said adhesive resin layer prevents aluminum in said aluminum reflection layer from being oxidized in a high temperature and high humidity atmosphere.
Claim 11
Dependent Claim
81 words
A signal recording disk comprising an aluminum reflection layer formed on a transparent resin substrate having a train of signal bits previously formed thereon, and an adhesive resin layer formed on the reflection layer, the adhesive resin layer containing an acrylic monomer, a radical former, and an epoxy compound and having an epoxy value of at least 0.005, whereby said adhesive resin layer prevents aluminum in said aluminum reflection layer from being oxidized in a high temperature and high humidity atmosphere.
References Cited (Backward Citations)
US4410581A
Cited
US4503531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |