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US4783386A
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Use of anthracyanine and phenanthracyanine chromophores in optical information media
Assignee: Hoechst Celanese Chemical Co
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Filing: 1987-01-12
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Granted: 1988-11-08
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Expires: 2007-01-12
Abstract
Abstract Provided is an optical information recording medium and a method of recording information thereon. The information layer of the recording medium comprises an anthracyanine or phenanthracyanine chromophore compound. In a preferred embodiment, the chromophore is substituted with at least one substituent conferring film forming properties to the chromophore, e.g., a monomer or oligomeric substituent comprised of acid, amide or ester units. The resulting information layer exhibits strong absorption in the range of from about 780-850 nm. Employing an anthracyanine or phenanthracyanine chromophore substituted with a film forming substituent further offers the advantages of a single component material exhibiting good thermomechanical properties.
Inventors
- 👤 David E. Nikles
- 👤 R. Sidney Jones, Jr.
- 👤 James E. Kuder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:38
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/248; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/107; Y10S430/145; Y10S430/146; Y10T; Y10T428/00; Y10T428/23; Y10T428/231
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
47 words
An optical information storage medium comprising an information recording layer which is a smooth, optical quality light absorptive layer in which detectable changes can be induced when using a laser upon the surface of the layer, wherein the information recording layer comprises an anthracyanine or phenanthracyanine chromophore.
Claim 2
Dependent Claim
47 words
An optical information storage medium comprising an information recording layer which is a smooth, optical quality light absorptive layer in which detectable changes can be induced when using a laser upon the surface of the layer, wherein the information recording layer comprises an anthracyanine or phenanthracyanine chromophore.
Claim 3
Dependent Claim
17 words
The optical information storage medium of claim 1, wherein the recording layer further comprises a resin binder.
Claim 4
Dependent Claim
17 words
The optical information storage medium of claim 2, wherein the resin binder is a dimer acid polyamide.
Claim 5
Dependent Claim
25 words
The optical information storage medium of claim 1, wherein the anthracyanine or phenanthracyanin chromophore is substituted with at least one substituent conferring film forming properties.
Claim 6
Dependent Claim
20 words
The optical information storage medium of claim 4, wherein the film conferring organic substituent is a monomer or an oligomer.
Claim 7
Dependent Claim
40 words
The optical information storage medium of claim 5, wherein the film conferring organic substituent contains at least one functional unit selected from the group consisting of ether, acid, amide, ester, sulfonamide, acrylate, epoxy, urethane and silicone units, and mixtures thereof.
Claim 8
Dependent Claim
34 words
The optical information sotrage medium of claim 6, wherein the film conferring organic substituent contains at least one functional unit selected from the group consisting of acid, amide and ester units and mixtures thereof.
Claim 9
Dependent Claim
40 words
The optical information storage medium of claim 5, wherein the chromophore contains a central hetero atom and the hetero atom is Si, Ge, Sn, a transition metal, Al, Ga or In, with the chromophore being substituted at the hetero atom.
Claim 10
Dependent Claim
17 words
The optical information storage medium of claim 8, wherein the hetero atom is Si, Ge or Sn.
Claim 11
Dependent Claim
46 words
The optical information storage medium of claim 5, wherein the chromophore contains a central hetero atom and the hetero atom is an element of Group IIa, IIIb or IVb of the Periodic Table or a transition metal, with the chromophore being substituted at an aromatic ring.
Claim 12
Dependent Claim
17 words
The optical information storage medium of claim 1, wherein the recording medium comprises a thermally stable substrate.
Claim 13
Dependent Claim
18 words
The optical information storage medium of claim 1, wherein the medium is in the form of a disk.
Claim 14
Dependent Claim
39 words
A readable information medium comprising a relatively thick and thermally stable substrate and having coated thereon a layer comprising an information track comprised of a succession of spaced deformations, said layer being comprised of an anthracyanine or phenanthracyaine chromophore.
Claim 15
Dependent Claim
39 words
A readable information medium comprising a relatively thick and thermally stable substrate and having coated thereon a layer comprising an information track comprised of a succession of spaced deformations, said layer being comprised of an anthracyanine or phenanthracyaine chromophore.
Claim 16
Dependent Claim
23 words
The information medium of claim 13, wherein the layer further compris®s a resin binder, and said resin binder is a dimer acid polyamide.
Claim 17
Dependent Claim
16 words
The information medium of claim 13, wherein the medium is in the form of a disk.
Claim 18
Dependent Claim
24 words
An erasable information medium comprising a relatively thick and thermally stable substrate having coated thereon a layer comprised of an anthracyanine or phenanthracyanine chromophore.
Claim 19
Dependent Claim
24 words
An erasable information medium comprising a relatively thick and thermally stable substrate having coated thereon a layer comprised of an anthracyanine or phenanthracyanine chromophore.
Claim 20
Dependent Claim
14 words
The information medium of claim 16, wherein the layer further comprises a resin binder.
Claim 21
Dependent Claim
14 words
The information medium of claim 17, wherein the resin binder is dimer acid polyamide.
Claim 22
Independent Claim
48 words
A method of recording information in a thin film deposited on a relatively thick substrate by irradiating the film with a laser beam in accordance with said information to form deformations in the film, the improvement which comprises said film being comprised of an anthracyanine or phenanthracyanine chromophore.
Claim 23
Independent Claim
48 words
A method of recording information in a thin film deposited on a relatively thick substrate by irradiating the film with a laser beam in accordance with said information to form deformations in the film, the improvement which comprises said film being comprised of an anthracyanine or phenanthracyanine chromophore.
Claim 24
Independent Claim
52 words
A method of erasing a deformation information pattern of an information medium, which deformation patter is formed in a film deposited on a substrate and with said erasing being achieved by heating or imparting energy to said film, the improvement which comprises said film being comprised of an anthracyanine or phenanthracyanine chromophore.
Claim 25
Independent Claim
52 words
A method of erasing a deformation information pattern of an information medium, which deformation patter is formed in a film deposited on a substrate and with said erasing being achieved by heating or imparting energy to said film, the improvement which comprises said film being comprised of an anthracyanine or phenanthracyanine chromophore.
Claim 26
Dependent Claim
28 words
An optical information storage medium comprising an information recording layer, wherein the information recording layer comprises an anthracyanine or phenanthracyanine chromophore which contains a silicon central hetero atom.
Claim 27
Dependent Claim
28 words
An optical information storage medium comprising an information recording layer, wherein the information recording layer comprises an anthracyanine or phenanthracyanine chromophore which contains a silicon central hetero atom.
Claim 28
Dependent Claim
17 words
The optical information storage medium of claim 21, wherein the recording medium comprises a thermally stable substrate.
Claim 29
Dependent Claim
18 words
The optical information storage medium of claim 21, wherein the medium is in the form of a disk.
Claim 30
Dependent Claim
25 words
The optical information storage medium of claim 21, wherein the anthracyanine or phenanthracyanine chromophore is substituted with at least one substituent conferring film forming properties.
Claim 31
Dependent Claim
40 words
The optical information storage medium of claim 24, wherein the film conferring organic substituent contains at least one functional unit selected form the group consisting of ether, acid, amide, ester, sulfonamide, acrylate, epoxy, urethane, and silicone units, and mixtures thereof.
Claim 32
Dependent Claim
34 words
The optical information storage medium of claim 25, wherein the film conferring organic substituent contains at least one functional unit selected form the group consisting of acid, amide and ester units, and mixtures thereof.
Claim 33
Dependent Claim
49 words
A readable information medium comprising a relatively thick and thermally stable substrate having coated thereon a layer comprising an information track comprised of a succession of spaced deformations, said layer being comprised of an anthracyanine or phenanthracyanine chromophore substituted with at least one organic substituent conferring film forming properties.
Claim 34
Dependent Claim
49 words
A readable information medium comprising a relatively thick and thermally stable substrate having coated thereon a layer comprising an information track comprised of a succession of spaced deformations, said layer being comprised of an anthracyanine or phenanthracyanine chromophore substituted with at least one organic substituent conferring film forming properties.
Claim 35
Dependent Claim
18 words
The information medium of claim 27, wherein the film conferring organic substituent is a monomer or an oligomer.
Claim 36
Dependent Claim
38 words
The information medium of claim 28, wherein the film conferring organic substituent contains at least one functional unit selected from the group consisting of ether, acid, amide, ester, sulfonamide, acrylate, epoxy, urethane and silicone units, and mixtures thereof.
Claim 37
Dependent Claim
32 words
The information medium of claim 29, wherein the film conferring organic substituent contains at leasta one functional unit selected from the group consisting of acid, amide, and ester units, and mixtures thereof.
Claim 38
Dependent Claim
34 words
An erasable medium comprising a relatively thick and thermally stable substrate having coated thereon a layer comprised of an anthracyanine or phenathracyanine chromophore substituted with at least one organic substituted conferring film forming properties.
Claim 39
Dependent Claim
34 words
An erasable medium comprising a relatively thick and thermally stable substrate having coated thereon a layer comprised of an anthracyanine or phenathracyanine chromophore substituted with at least one organic substituted conferring film forming properties.
Claim 40
Dependent Claim
18 words
The information medium of claim 31, wherein the film conferring organic substituent is a monomer or an oligomer.
Claim 41
Dependent Claim
38 words
The information medium of claim 32, wherein the film conferring organic substituent contains at least one functional unit selected from the group consisting of ether, acid, amide, ester, sulfonamide, acrylate, epoxy, urethane and silicone units, and mixtures thereof.
Claim 42
Dependent Claim
32 words
The information medium of claim 33, wherein the film conferring organic substituent contains at least one functional unit selected form the group consisting of acid, amide, and ester units, and mixtures thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-11-08 | 1992-05-09 | 1992-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-08 | 1996-05-09 | 1996-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-08 | 2000-05-09 | 2000-11-08 | $7700.00 | Window Closed / Lapsed |