Patent US4600625A successfully refreshed from Google Patents.
US4600625A
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Optical information recording medium
Assignee: Ricoh Co Ltd
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Filing: 1984-09-18
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Granted: 1986-07-15
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Expires: 2004-09-18
Abstract
Abstract An optical information recording medium being capable of writing and reading with laser beam which comprises forming, on a transparent or opaque substrate, a thin film (recording layer) containing a cyanine coloring matter represented by the general formula: ##STR1## (wherein, R 1 , R 2 and R 3 may be the same or different, and each stands for C 1 -C 6 alkyl; X stands for halogen, perhalogenate, boron tetrafluoride, toluenesulfonic acid or alkylsulfonic acid; A stands for a benzene ring or a naphthyl ring and a substituent such as alkyl, alkoxy, hydroxy, carboxyl, halogen, allyl or alkylcarboxyl may be or may be not present on each ring; and n is an integer of 1-3.).
Inventors
- 👤 Michiharu Abe
- 👤 Hideaki Oba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:31
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/247; G11B7/2472; G11B7/252; G11B7/257; G11B2007/25705; G11B2007/25706; G11B2007/25708; G11B2007/2571; G11B2007/25715; G11B2007/25718; G11B7/253; G11B7/2533; G11B7/2534; G11B7/256; G11B7/2572; G11B7/2575; G11B7/2578; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/146; Y10S430/165; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/24802; Y10T428/24835; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
135 words
An optical information recording medium which comprises a substrate and a recording layer on said substrate, said recording medium being free of a reflective metal layer, said recording layer being a monolayer consisting essentially of cyanine dye having the formula; ##STR18## wherein R 1 , R 2 and R 3 can be the same or different, and each is alkyl having 1 to 6 carbon atoms; X is halogen, perhalogenate, boron tetrafluoride, toluenesulfonic acid or alkylsulfonic acid; A is phenylene, substituted phenylene, naphthylene or substituted naphthylene, wherein the substituent on said substituted phenylene and naphthylene is selected from the group consisting of alkyl, alkoxy, hydroxy, carboxyl, halogen, allyl or alkylcarboxyl; and n is an integer of 1-3 or a mixture of said cyanine dye with another coloring material which absorbs radiation of near infra-red wavelength.
Claim 2
Dependent Claim
135 words
An optical information recording medium which comprises a substrate and a recording layer on said substrate, said recording medium being free of a reflective metal layer, said recording layer being a monolayer consisting essentially of cyanine dye having the formula; ##STR18## wherein R 1 , R 2 and R 3 can be the same or different, and each is alkyl having 1 to 6 carbon atoms; X is halogen, perhalogenate, boron tetrafluoride, toluenesulfonic acid or alkylsulfonic acid; A is phenylene, substituted phenylene, naphthylene or substituted naphthylene, wherein the substituent on said substituted phenylene and naphthylene is selected from the group consisting of alkyl, alkoxy, hydroxy, carboxyl, halogen, allyl or alkylcarboxyl; and n is an integer of 1-3 or a mixture of said cyanine dye with another coloring material which absorbs radiation of near infra-red wavelength.
Claim 3
Dependent Claim
16 words
A recording medium according to claim 1 wherein said recording layer consists of said cyanine dye.
Claim 4
Dependent Claim
20 words
A recording medium according to claim 1 wherein said recording layer consists essentially of said cyanine dye and an antioxidant.
Claim 5
Dependent Claim
16 words
A recording medium according to claim 1 wherein said recording layer does not contain a binder.
Claim 6
Dependent Claim
15 words
A recording medium according to claim 1 wherein said recording layer is 100-1000 Å thick.
Claim 7
Dependent Claim
18 words
A recording medium according to claim 1 wherein said recording layer is formed by the rotary coating method.
Claim 8
Dependent Claim
18 words
A recording medium according to claim 1 wherein the recording layer is formed by the spin coating method.
Claim 9
Dependent Claim
17 words
A recording medium according to claim 1 wherein said substrate is transparent to a write laser beam.
Claim 10
Dependent Claim
16 words
A recording medium according to claim 1 wherein said substrate is made of a synthetic resin.
Claim 11
Dependent Claim
16 words
A recording medium according to claim 1 wherein said substrate is made of an acrylic resin.
Claim 12
Dependent Claim
14 words
A recording medium according to claim 1 wherein said substrate is made of polycarbonate.
Claim 13
Dependent Claim
15 words
A recording medium according to claim 1 wherein said substrate has an irregular guide groove.
Claim 14
Dependent Claim
20 words
A recording medium according to claim 1 wherein an adhesive layer is provided between said recording layer and said substrate.
Claim 15
Dependent Claim
18 words
A recording medium according to claim 13 wherein said adhesive layer is formed of an insulating resin material.
Claim 16
Dependent Claim
17 words
A recording medium according to claim 13 wherein said adhesive layer is formed of an acrylic resin.
Claim 17
Dependent Claim
16 words
A recording medium according to claim 13 wherein said adhesive layer is about 0.05-10 μm thick.
Claim 18
Dependent Claim
16 words
A recording medium according to claim 13 wherein the adhesive layer is about 0.1-0.5 μm thick.
Claim 19
Dependent Claim
18 words
A recording medium according to claim 1 wherein a protective layer is further formed on said recording layer.
Claim 20
Dependent Claim
15 words
A recording medium according to claim 18 wherein said protective layer is 0.1-10 μm thick.
Claim 21
Dependent Claim
15 words
A recording medium according to claim 18 wherein the protective layer is 0.5-1.0 μm thick.
Claim 22
Dependent Claim
27 words
An optical information recording medium as claimed in claim 1 in which n is 3, A is phenylene substituted with halogen, and X is ClO 4 .
Claim 23
Dependent Claim
16 words
A recording medium according to claim 21 wherein said recording layer consists of said cyanine dye.
Claim 24
Dependent Claim
20 words
A recording medium according to claim 21 wherein said recording layer consists essentially of said cyanine dye and an antioxidant.
Claim 25
Dependent Claim
16 words
A recording medium according to claim 21 wherein said recording layer does not contain a binder.
Claim 26
Dependent Claim
15 words
A recording medium according to claim 21 wherein said recording layer is 100-1000 Å thick.
Claim 27
Dependent Claim
18 words
A recording medium according to claim 21 wherein said recording layer is formed by the rotary coating method.
Claim 28
Dependent Claim
18 words
A recording medium according to claim 21 wherein the recording layer is formed by the spin coating method.
Claim 29
Dependent Claim
17 words
A recording medium according to claim 21 wherein said substrate is transparent to a write laser beam.
Claim 30
Dependent Claim
16 words
A recording medium according to claim 21 wherein said substrate is made of a synthetic resin.
Claim 31
Dependent Claim
16 words
A recording medium according to claim 21 wherein said substrate is made of an acrylic resin.
Claim 32
Dependent Claim
14 words
A recording medium according to claim 21 wherein said substrate is made of polycarbonate.
Claim 33
Dependent Claim
15 words
A recording medium according to claim 21 wherein said substrate has an irregular guide groove.
Claim 34
Dependent Claim
20 words
A recording medium according to claim 21 wherein an adhesive layer is provided between said recording layer and said substrate.
Claim 35
Dependent Claim
18 words
A recording medium according to claim 33 wherein said adhesive layer is formed of an insulating resin material.
Claim 36
Dependent Claim
17 words
A recording medium according to claim 33 wherein said adhesive layer is formed of an acrylic resin.
Claim 37
Dependent Claim
16 words
A recording medium according to claim 33 wherein said adhesive layer is about 0.05-10 μm thick.
Claim 38
Dependent Claim
16 words
A recording medium according to claim 33 wherein the adhesive layer is about 0.1-0.5 μm thick.
Claim 39
Dependent Claim
18 words
A recording medium according to claim 21 wherein a protective layer is further formed on said recording layer.
Claim 40
Dependent Claim
15 words
A recording medium according to claim 48 wherein said protective layer is 0.1-10 μm thick.
Claim 41
Dependent Claim
15 words
A recording medium according to claim 38 wherein the protective layer is 0.5-1.0 μm thick.
Claim 42
Dependent Claim
23 words
An optical information recording medium as claimed in claim 21 wherein each of R 1 , R 2 and R 3 is methyl.
Claim 43
Dependent Claim
16 words
A recording medium according to claim 41 wherein said recording layer consists of said cyanine dye.
Claim 44
Dependent Claim
20 words
A recording medium according to claim 41 wherein said recording layer consists essentially of said cyanine dye and an antioxidant.
Claim 45
Dependent Claim
16 words
A recording medium according to claim 41 wherein said recording layer does not contain a binder.
Claim 46
Dependent Claim
15 words
A recording medium according to claim 41 wherein said recording layer is 100-1000 Å thick.
Claim 47
Dependent Claim
18 words
A recording medium according to claim 41 wherein said recording layer is formed by the rotary coating method.
Claim 48
Dependent Claim
18 words
A recording medium according to claim 41 wherein the recording layer is formed by the spin coating method.
Claim 49
Dependent Claim
17 words
A recording medium according to claim 41 wherein said substrate is transparent to a write laser beam.
Claim 50
Dependent Claim
16 words
A recording medium according to claim 41 wherein said substrate is made of a synthetic resin.
Claim 51
Dependent Claim
16 words
A recording medium according to claim 41 wherein said substrate is made of an acrylic resin.
Claim 52
Dependent Claim
14 words
A recording medium according to claim 41 wherein said substrate is made of polycarbonate.
Claim 53
Dependent Claim
15 words
A recording medium according to claim 41 wherein said substrate has an irregular guide groove.
Claim 54
Dependent Claim
20 words
A recording medium according to claim 41 wherein an adhesive layer is provided between said recording layer and said substrate.
Claim 55
Dependent Claim
18 words
A recording medium according to claim 53 wherein said adhesive layer is formed of an insulating resin material.
Claim 56
Dependent Claim
17 words
A recording medium according to claim 53 wherein said adhesive layer is formed of an acrylic resin.
Claim 57
Dependent Claim
16 words
A recording medium according to claim 53 wherein said adhesive layer is about 0.05-10 μm thick.
Claim 58
Dependent Claim
16 words
A recording medium according to claim 53 wherein the adhesive layer is about 0.1-0.5 μm thick.
Claim 59
Dependent Claim
18 words
A recording medium according to claim 41 wherein a protective layer is further formed on said recording layer.
Claim 60
Dependent Claim
15 words
A recording medium according to claim 58 wherein said protective layer is 0.1-10 μm thick.
Claim 61
Dependent Claim
15 words
A recording medium according to claim 58 wherein the protective layer is 0.5-1.0 μm thick.
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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |