Patent US4626496A successfully refreshed from Google Patents.
US4626496A
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Optical information recording medium
Assignee: Ricoh Co Ltd
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Filing: 1985-06-14
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Granted: 1986-12-02
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Expires: 2005-06-14
Abstract
Abstract The present invention provides an optical information recording medium comprising, on a substrate, a recording layer consisting essentially of a double salt of an organic dye cation and a metal complex anion or a recording layer consisting essentially of said double salt and an organic dye.
Inventors
- 👤 Tsutomu Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:46
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/249; G11B7/246; G11B7/247; G11B7/2472; G11B7/248; G11B7/252; G11B7/253; G11B7/2533; G11B7/2534; Y; Y10; Y10S; Y10S430/00; Y10S430/136; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
49 words
An optical information recording medium capable of recording information and regenerating the information with light comprising, on a substrate, a recording layer consisting essentially of a double salt of an organic dye cation and a metal complex anion, said recording layer having a thickness 100 Å to 5 microns.
Claim 2
Dependent Claim
49 words
An optical information recording medium capable of recording information and regenerating the information with light comprising, on a substrate, a recording layer consisting essentially of a double salt of an organic dye cation and a metal complex anion, said recording layer having a thickness 100 Å to 5 microns.
Claim 3
Dependent Claim
50 words
A recording medium according to claim 1, wherein said organic dye cation is selected from the group consisting of polymethine dye cation, triaryl methane dye cation, pyrylium dye cation, phenanthrene dye cation, tetrahydrocholine dye cation and triarylamine dye cation, and said metal complex anion is a transition metal complex anion.
Claim 4
Dependent Claim
17 words
A recording medium according to claim 2, wherein the organic dye cation is a polymethine dye cation.
Claim 5
Dependent Claim
16 words
A recording medium according to claim 3, wherein said polymethine dye cation is of indolenine type.
Claim 6
Dependent Claim
31 words
A recording medium according to claim 1, wherein the metal complex anion has its absorbing power in the wavelength range longer than the maximum absorption wavelength of the organic dye cation.
Claim 7
Dependent Claim
22 words
A recording medium according to claim 1, wherein the thickness of the recording layer is in the range of 100 Å-1 μm.
Claim 8
Dependent Claim
21 words
A recording medium according to claim 6, wherein the thickness of the recording layer is in the range of 200-2000 Å.
Claim 9
Dependent Claim
21 words
A recording medium according to claim 7, wherein the thickness of the recording layer is in the range of 400-1000 Å.
Claim 10
Dependent Claim
14 words
A recording medium according to claim 1, wherein the recording layer contains no binder.
Claim 11
Dependent Claim
21 words
A recording medium according to claim 1, wherein the reflectivity of the recording layer from the substrate is at least 15%.
Claim 12
Dependent Claim
17 words
A recording medium according to claim 1, wherein the recording layer is formed by a coating method.
Claim 13
Dependent Claim
14 words
A recording medium according to claim 11, wherein said coating method is spin coating.
Claim 14
Dependent Claim
25 words
A recording medium according to claim 1, wherein the substrate is selected from the group consisting of an acrylic resin plate and a polycarbonate plate.
Claim 15
Dependent Claim
17 words
A recording medium according to claim 1, wherein a protective layer is provided on the recording layer.
Claim 16
Dependent Claim
20 words
A recording medium according to claim 1, wherein an undercoat layer is provided between the substrate and the recording layer.
Claim 17
Dependent Claim
23 words
A recording medium according to claim 15, wherein said undercoat layer is formed of the same kind material as that for the substrate.
Claim 18
Dependent Claim
53 words
An optical information recording medium capable of recording information and regenerating the information with light comprising, on a substrate, a recording layer consisting essentially of a double salt of an organic dye cation and a metal complex anion and an organic dye, said recording layer having a thickness 100 Å to 5 microns.
Claim 19
Dependent Claim
53 words
An optical information recording medium capable of recording information and regenerating the information with light comprising, on a substrate, a recording layer consisting essentially of a double salt of an organic dye cation and a metal complex anion and an organic dye, said recording layer having a thickness 100 Å to 5 microns.
Claim 20
Dependent Claim
88 words
A recording medium according to claim 17, wherein said organic dye cation is selected from the group consisting of polymethine dye cation, triarylmethane dye cation, pyrylium dye cation, phenanthrene dye cation, tetrahydrocholine dye cation and triarylamine dye cation; said metal complex anion is a transition metal complex anion; and said organic dye is selected from the group consisting of polymethine dye, triarylmethane dye, pyrylium dye, phenanthrene dye, tetrahydrocholine dye, triarylamine dye, phthalocyanine dye, dioxane dye, triphenothiazine dye, anthraquinone dye, indanthrene dye xanthene dye, croconium dye and azulene dye.
Claim 21
Dependent Claim
17 words
A recording medium according to claim 18, wherein the organic dye cation is a polymethine dye cation.
Claim 22
Dependent Claim
16 words
A recording medium according to claim 19, wherein said polymethine dye cation is of indolenine type.
Claim 23
Dependent Claim
31 words
A recording medium according to claim 17, wherein the metal complex anion has its absorbing power in the wavelength range longer than the maximum absorption wavelength of the organic dye cation.
Claim 24
Dependent Claim
22 words
A recording medium according to claim 17, wherein the thickness of the recording layer is in the range of 100 Å-1 μm.
Claim 25
Dependent Claim
21 words
A recording medium according to claim 22, wherein the thickness of the recording layer is in the range of 200-2000 Å.
Claim 26
Dependent Claim
21 words
A recording medium according to claim 23, wherein the thickness of the recording layer is in the range of 400-1000 Å.
Claim 27
Dependent Claim
22 words
A recording medium according to claim 17, wherein the reflectivity of the recording layer from the substrate side is at least 15%.
Claim 28
Dependent Claim
17 words
A recording medium according to claim 17, wherein the recording layer is formed by a coating method.
Claim 29
Dependent Claim
13 words
A recording medium according to claim 26, wherein said coating method is spin-coating.
Claim 30
Dependent Claim
25 words
A recording medium according to claim 17, wherein the substrate is selected from the group consisting of an acrylic resin plate and a polycarbonate plate.
Claim 31
Dependent Claim
17 words
A recording medium according to claim 17, wherein a protective layer is provided on the recording layer.
Claim 32
Dependent Claim
20 words
A recording medium according to claim 17, wherein an undercoat layer is provided between the substrate and the recording layer.
Claim 33
Dependent Claim
22 words
A recording medium according to claim 30, wherein said undercoat layer is formed of the same material as that for the substrate.
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) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |