US5182186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical information recording medium
Assignee: Fujifilm Corp
•
Filing: 1990-03-20
•
Granted: 1993-01-26
•
Expires: 2010-03-20
Abstract
Abstract An optical information recording medium for carrying out recording, readout or erasing by laser beam which comprises a support having carried thereon a recording layer containing dye(s) represented by the general formula (I): ##STR1## wherein R 1 and R 2 independently represent substituted or unsubstituted alkyl groups, substituted or unsubstituted alkenyl groups, or substituted or unsubstituted aryl groups, L represents a substituted or unsubstituted methine group, or a linking group formed by linkage of 3, 5 or 7 substituted or unsubstituted menthine groups through conjugated double bonds, Z represents an atomic group for completing an aromatic ring optionally having substituent(s), and X - represents a monovalent or divalent anion for neutralization of electron charge of the cationic part. The present optical information recording media have adequate recording characteristics and have a dye recording layer which is capable of maintaining the characteristics over a long period and thus is excellent in stability.
Inventors
- 👤 Yoshio Inagaki
- 👤 Keiichi Adachi
- 👤 Masao Yabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:33
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/249; G11B7/2492; G11B7/246; G11B7/247; G11B7/2472; G11B7/252; G11B7/253; G11B7/2531; G11B7/2533; Y; Y10; Y10S; Y10S430/00; Y10S430/145; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
170 words
An optical information recording medium for carrying out recording or readout by laser beam which comprises a support having carried thereon a recording layer containing dye(s) represented by the general formula (I): ##STR13## wherein R 1 and R 2 independently represent substituted or unsubstituted alkyl groups, L represents a linking group formed by linkage of 5 substituted or unsubstituted methine groups through conjugated double bonds, Z represents an atomic group for completing an unsubstituted benzene ring and X - is a halogen ion, SO 4 2- , HSO 4 - , an alkylsulfate ion, a sulfonate ion, a carboxylate ion, PF 6 - , BF 4 - , ClO 4 - , IO 4 - , a tungstate ion, a heteropolyacid ion, H 2 PO 4 - , NO 3 - or a phenolate ion for neutralization of electron charge of the cationic part wherein the reflectance of the optical information recording medium, at least one point of the wavelength region of 750 to 850 nm, is 60% or more.
Claim 2
Dependent Claim
170 words
An optical information recording medium for carrying out recording or readout by laser beam which comprises a support having carried thereon a recording layer containing dye(s) represented by the general formula (I): ##STR13## wherein R 1 and R 2 independently represent substituted or unsubstituted alkyl groups, L represents a linking group formed by linkage of 5 substituted or unsubstituted methine groups through conjugated double bonds, Z represents an atomic group for completing an unsubstituted benzene ring and X - is a halogen ion, SO 4 2- , HSO 4 - , an alkylsulfate ion, a sulfonate ion, a carboxylate ion, PF 6 - , BF 4 - , ClO 4 - , IO 4 - , a tungstate ion, a heteropolyacid ion, H 2 PO 4 - , NO 3 - or a phenolate ion for neutralization of electron charge of the cationic part wherein the reflectance of the optical information recording medium, at least one point of the wavelength region of 750 to 850 nm, is 60% or more.
Claim 3
Dependent Claim
38 words
The optical information recording medium of claim 1 wherein the respective substituents in the definition of R 1 and R 2 in the general formula (I) are independently those having a hydrophobic parameter π of -0.5 to 15.
Claim 4
Dependent Claim
43 words
The optical information recording medium of claim 1 wherein the respective substituents in the definition of R 1 and R 2 in the general formula (I) are independently halogen atoms, substituted or unsubstituted phenyl groups, alkylthio groups, or substituted or unsubstituted phenylthio groups.
Claim 5
Dependent Claim
64 words
The optical information recording medium of claim 1 wherein L in the general formula (I) is represented by the following general formula (b): ##STR14## wherein Y represents a hydrogen atom, a lower alkyl group, a substituted or unsubstituted phenyl group, an aralkyl group, a lower alkoxy group, a di-substituted amino group, an alkylthio group, a cyano group, a nitro group or a halogen atom.
Claim 6
Dependent Claim
13 words
The optical information recording medium of claim 1 which further comprises a quencher.
Claim 7
Dependent Claim
58 words
The optical information recording medium of claim 5 wherein the quencher is a compound represented by the general formula (II) or (III): ##STR15## wherein (Cat 1 ) and (Cat 2 ) represent cations necessary for making the compound neutral, M 1 and M 2 independently represent nickel, copper, cobalt, palladium or platinum, and n represents 1 or 2.
Claim 8
Dependent Claim
30 words
The optical information recording medium of claim 6 wherein (Cat 1 ) and (Cat 2 ) represent an alkali metal ion, an alkaline earth metal ion or NH 4 .
Claim 9
Dependent Claim
116 words
The optical information recording medium of claim 6 wherein (Cat 1 ) and (Cat 2 ) are cations represented by one of the general formulae (IV-a) to (IV-e): ##STR16## wherein R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 and R 22 independently represent substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, or substituted or unsubstituted aryl groups having 6 to 14 carbon atoms, and Z 1 and Z 2 independently represent nonmetal atomic groups which form an 5-membered or 6-membered ring together with a nitrogen atom in each formula.
Claim 10
Dependent Claim
95 words
The optical information recording medium of claim 8 wherein the substituents of the alkyl group and aryl group in the definition of R 11 to R 22 are independently cyano groups. hydroxyl groups, alkyl groups having 1 to 20 carbon atoms, aryl groups having 6 to 14 carbon atoms, acyloxy groups having 2 to 20 carbon atoms, alkoxy groups having 1 to 6 carbon atoms, aryloxy groups, aralkyl groups, alkoxycarbonyl groups, aryloxycarbonyl groups, acyl groups, acylamino groups, substituted or unsubstituted carbamoyl groups, alkylsulfonylamino groups, arylsulfonylamino groups, alkylsulfamoyl groups, arylsulfamoyl groups, alkylsulfonyl groups or arylsulfonyl groups.
Claim 11
Dependent Claim
53 words
The optical information recording medium of claim 8 wherein the 5-membered ring or 6-membered ring n the definition of Z 1 and Z 2 is a pyridine ring, an imidazole ring, a pyrrole ring, a 2-pyrroline ring, a pyrrolidine ring, a piperidine ring, a pyrazole ring, a pyrazoline ring or an imidazoline ring.
Claim 12
Dependent Claim
110 words
The optical information recording medium of claim 5 wherein the quencher is selected from the following compounds: ##STR17## wherein R 1 to R 4 independently represent alkyl groups or aryl groups, and M represents a divalent transition metal atom, (ii) Bisphenyldithiols ##STR18## wherein R 5 and R 6 independently represent alkyl groups or halogen atoms, and M represents a divalent transition metal atom, (iii) Acetylacetonate chelates (iv) Dithiocarbamic acid chelates (v) Bisphenylthiols (vi) Thiocatechol chelates (vii) Salicylaldehyde oximes (viii) Thiobisphenolate chelates (ix) Phosphonous acid chelates (x) Benzoates (xi) Hindered amines (xii) Transition metal salts (xiii) Aminium or diimonium compounds ##STR19## wherein R represents an alkyl group or an aryl group.
Claim 13
Dependent Claim
32 words
The optical information recording medium of claim 5 wherein the quencher is present in an amount of 0.05 to 12 moles per 1 mole of the compound of the general formula (I).
Claim 14
Dependent Claim
17 words
The optical information recording medium of claim 5 wherein the quencher is contained in the recording layer.
Claim 15
Dependent Claim
43 words
The optical information recording medium of claim 1 wherein a subbing layer is provided on the support, a protective layer is provided on the dye thin film recording layer, and/or a reflecting layer is provided on the support or on the recording layer.
Claim 16
Dependent Claim
15 words
The optical information recording medium of claim 1 wherein the support is glass or plastic.
Claim 17
Dependent Claim
31 words
The optical information recording medium of claim 1 which further comprises a binder in an amount of 0.01 to 2 times the weight of the compound of the general formula (I).
Claim 18
Dependent Claim
21 words
The optical information recording medium of claim 1 wherein the film thickness of the recording layer is 0.01 to 2 micrometers.
Claim 19
Dependent Claim
19 words
The optical information recording medium of claim 1 wherein the recording medium does not have any metal reflective layer.
Claim 20
Dependent Claim
72 words
The optical information recording medium of claim 1 wherein C - in the general formula (I) is selected from the group consisting of Cl - , BR - , I - , CH 3 OSO 3 - , C 2 H 5 OSO 3 - , p-toluenesulfonate ion, p-chlorobenzene sulfonate ion, methanesulfonate ion, butanesulfonate ion, naphthalene-1, 5-disulfonate ion, perfluorosulfonate ion, PF 6 - , BF 4 - and CLO 4 - .
References Cited (Backward Citations)
US4652514A
Cited
EP0147083A2
Cited
US4735889A
Cited
US4713314A
Cited
US4626496A
Cited
US4767571A
Cited
US4791023A
Cited
US4921317A
Cited
US4763966A
Cited
EP0182946A1
Cited
US4719170A
Cited
US4730902A
Cited
US4761181A
Cited
US4885228A
Cited
US4913846A
Cited
US4851322A
Cited
US4914001A
Cited
US4904574A
Cited
US4968593A
Cited
US4994343A
Cited
EP0304050A1
Cited
US4999281A
Cited
US5024923A
Cited
US4981773A
Cited
EP0347183A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-01-26 | 1996-07-27 | 1997-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-26 | 2000-07-27 | 2001-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-26 | 2004-07-27 | 2005-01-26 | $7700.00 | Window Closed / Lapsed |