US4713314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical recording medium
Assignee: TDK Corp
•
Filing: 1985-05-02
•
Granted: 1987-12-15
•
Expires: 2005-05-02
Abstract
Abstract The invention relates to an optical recording medium for effecting writing of information by means of recording light such as laser and reproduction or reading of the recorded information by means of reproduction or reading light, and provides an optical recording medium designed to prevent any degradation of the properties by the reading light and any lowering of writing sensitivity and reading S/N ratios. The optical recording medium including a recording layer 2 on a substrate 1 is characterized in that the recording layer 2 contains a mixture of a cyanine dye with a combination of cyanine dye cation with quencher anion.
Inventors
- 👤 Kenryo Namba
- 👤 Shigeru Asami
- 👤 Toshiki Aoi
- 👤 Kazuo Takahashi
- 👤 Akihiko Kuroiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:19
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/249; G11B7/2495; C; C09; C09B; C09B23/00; C09B23/0008; C09B23/0016; C09B23/0041; C09B23/0066; C09B23/0075; C09B23/02; C09B23/06; C09B23/08; C09B23/083; C09B23/086; G11B7/246; G11B7/247; G11B7/2472; G11B2007/24612; G11B7/252; G11B7/253; G11B7/2533; G11B7/2534; G11B7/256; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
33 words
An optical recording medium including a recording layer on a substrate, wherein said recording layer contains a mixture of a cyanine dye with a bonded compound of cyanine dye cation with quencher anion.
Claim 2
Dependent Claim
33 words
An optical recording medium including a recording layer on a substrate, wherein said recording layer contains a mixture of a cyanine dye with a bonded compound of cyanine dye cation with quencher anion.
Claim 3
Dependent Claim
19 words
The optical recording medium as defined in claim 1, wherein the cyanine dye is an indolenine base cyanine dye.
Claim 4
Dependent Claim
20 words
The optical recording medium as defined in claim 2, wherein the cyanine dye cation is an indolenine base cyanine dye.
Claim 5
Dependent Claim
22 words
The optical recording medium as defined in claim 3, wherein the quencher anion is an anion of a transition metal chelate compound.
Claim 6
Dependent Claim
24 words
The optical recording medium as defined in claim 4, wherein the transition metal chelate compound is an anion of a bis-phenyldithiol base transition complex.
Claim 7
Dependent Claim
24 words
The optical recording medium as defined in claim 1, wherein the bonded compound is contained in an amount of 10 to 80 wt %.
Claim 8
Dependent Claim
21 words
The optical recording medium as defined in claim 1, wherein the recording layer has a thickness of 400 to 1200 Å.
Claim 9
Dependent Claim
21 words
The optical recording medium as defined in claim 1, wherein the substrate is substantially transparent to writing light and reading light.
Claim 10
Dependent Claim
17 words
The optical recording medium as defined in claim 1, wherein the substrate is fomed of a resin.
Claim 11
Dependent Claim
19 words
The optical recording medium as defined in claim 9, wherein the resin is an acrylic resin or polycarbonate resin.
Claim 12
Dependent Claim
24 words
The optical recording medium as defined in claim 8, wherein writing and reading are carried out from the back surface side of the substrate.
Claim 13
Dependent Claim
19 words
The optical recording medium as defined in claim 11, wherein no reflective layer is provided on the recording layer.
Claim 14
Dependent Claim
23 words
The optical recording medium as defined in claim 1, wherein the substrate includes therein an underlying layer, which includes thereon the recording layer.
Claim 15
Dependent Claim
29 words
The optical recording medium as defined in claim 13, wherein the underlying layer is formed of a coating film of a colloidal particle dispersion of a silicon base condensate.
Claim 16
Dependent Claim
22 words
The optical recording medium as defined in claim 14, wherein the colloidal particle has a particle size of 30 to 100 Å.
Claim 17
Dependent Claim
21 words
The optical recording medium as defined in claim 14, wherein the substrate is formed of an acrylic resin or polycarbonate resin.
Claim 18
Dependent Claim
21 words
The optical recording medium as defined in claim 14, wherein the underlying layer has a thickness of 50 to 500 Å.
Claim 19
Dependent Claim
34 words
The optical recording medium as defined in claim 14, wherein the recording layer contains a mixture of an indolenine base cyanine dye with a bonded compound of indolenine base cyanine cation with quencher anion.
Claim 20
Dependent Claim
22 words
The optical recording medium as defined in claim 18, wherein the quencher anion is an anion of bis-phenyldithiol base transition metal complex.
Claim 21
Dependent Claim
24 words
The optical recording medium as defined in claim 14, wherein the bonded compound is contained in an amount of 10 to 80 wt %.
Claim 22
Dependent Claim
24 words
The optical recording medium as defined in claim 14, wherein writing and reading are carried out from the back surface side of the substrate.
Claim 23
Dependent Claim
31 words
The optical recording medium as defined in claim 21, wherein the substrate is substantially transparent to writing light and reading light, and no reflective layer is provided on the recording layer.
Claim 24
Dependent Claim
23 words
The optical recording medium as defined in claim 1, wherein the substrate includes thereon the recording layer, which includes thereon a surface layer.
Claim 25
Dependent Claim
21 words
The optical recording medium as defined in claim 23, wherein the surface layer has a thickness of 50 to 300 Å.
Claim 26
Dependent Claim
29 words
The optical recording medium as defined in claim 23, wherein the surface layer is formed of a coating film of a colloidal particle dispersion of a silicon base condensate.
Claim 27
Dependent Claim
22 words
The optical recording medium as defined in claim 25, wherein the colloidal particle has a particle size of 30 to 100 Å.
Claim 28
Dependent Claim
35 words
The optical recording medium as defined in claim 25, wherein the recording layer contains a mixture of an indolenine base cyanine dye with a bonded compound of indolenine base cyanine dye cation with quencher anion.
Claim 29
Dependent Claim
23 words
The optical recording medium as defined in claim 27, wherein the quencher anion is an anion of a bis-phenyldithiol base transition metal complex.
Claim 30
Dependent Claim
24 words
The optical recording medium as defined in claim 25, wherein the bonded compound is contained in an amount of 10 to 80 wt %.
Claim 31
Dependent Claim
21 words
The optical recording medium as defined in claim 25, wherein the substrate is formed of an acrylic resin or polycarbonate resin.
Claim 32
Dependent Claim
24 words
The optical recording medium as defined in claim 25, wherein writing and reading are carried out from the back surface side of the substrate.
Claim 33
Dependent Claim
31 words
The optical recording medium as defined in claim 31, wherein the substrate is substantially transparent to writing light and reading light, and no reflective layer is provided on the recording layer.
Claim 34
Dependent Claim
23 words
The optical recording medium as defined in claim 13, wherein the substrate includes thereon the recording layer, which includes thereon a surface layer.
Claim 35
Dependent Claim
21 words
The optical recording medium as defined in claim 33, wherein the surface layer has a thickness of 50 to 300 Å.
Claim 36
Dependent Claim
29 words
The optical recording medium as defined in claim 33, wherein the surface layer is formed of a coating film of a colloidal particle dispersion of a silicon base condensate.
Claim 37
Dependent Claim
22 words
The optical recording medium as defined in claim 35, wherein the colloidal particle has a particle size of 30 to 100 Å.
Claim 38
Dependent Claim
29 words
The optical recording medium as defined in claim 35, wherein the underlying layer is formed of a coating film of a colloidal particle dispersion of a silicon base condensate.
Claim 39
Dependent Claim
22 words
The optical recording medium as defined in claim 37, wherein the colloidal particle has a particle size of 30 to 100 Å.
Claim 40
Dependent Claim
19 words
The optical recording medium as defined in claim 35, wherein the resin is an acrylic resin or polycarbonate resin.
Claim 41
Dependent Claim
34 words
The optical recording medium as defined in claim 35, wherein the recording layer contains a mixture of an indolenine base cyanine dye with a bonded compound of indolenine base cyanine cation with quencher anion.
Claim 42
Dependent Claim
23 words
The optical recording medium as defined in claim 40, wherein the quencher anion is an anion of a bis-phenyldithiol base transition metal complex.
Claim 43
Dependent Claim
24 words
The optical recording medium as defined in claim 35, wherein the bonded compound is contained in an amount of 10 to 80 wt %.
Claim 44
Dependent Claim
24 words
The optical recording medium as defined in claim 35, wherein writing and reading are carried out from the back surface side of the substrate.
Claim 45
Dependent Claim
31 words
The optical recording medium as defined in claim 43, wherein the substrate is substantially transparent to writing light and reading light, and no reflective layer is provided on the recording layer.
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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |