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US4605607A
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Optical data storage medium having organometallic chromophore/polymer coordinated information layer
Assignee: Celanese Corp
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Filing: 1985-04-08
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Granted: 1986-08-12
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Expires: 2005-04-08
Abstract
Abstract Provided is an optical data storage medium comprising a chromophore/polymer composition information layer, wherein the chromophore is chemically bound or coordinated with the polymer. The chromophore is an organo macrocyclic chromophore containing a constituent metal atom, and preferably a central metal atom, with the chromophore being coordinated to the polymer through the metal atom. As a result, the chromophore/polymer material has excellent film-forming properties so that the medium can be readily and efficiently manufactured. As well, the resulting information layer offers excellent thermomechanical properties and exhibits excellent absorption properties, all in a single component material. By utilizing a single component material, the problem of dye/polymer phase separation frequently encountered in conventional dye/polymer mixtures is also overcome.
Inventors
- 👤 David E. Nikles
- 👤 R. Sidney Jones, Jr.
- 👤 James E. Kuder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:32
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/249; G11B7/246; G11B7/248; G11B7/004; G11B7/245; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
44 words
A medium for storage of optical information comprising a polymeric information layer, the improvement which comprises said polymeric information layer comprising an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 2
Independent Claim
44 words
A medium for storage of optical information comprising a polymeric information layer, the improvement which comprises said polymeric information layer comprising an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 3
Dependent Claim
13 words
The medium of claim 1, wherein the polymer is a dimer acid polyamide.
Claim 4
Dependent Claim
10 words
The medium of claim 1, wherein the polymer is poly(vinylpyridine).
Claim 5
Dependent Claim
15 words
The medium of claim 1, wherein the medium is in the form of a disk.
Claim 6
Dependent Claim
12 words
The medium of claim 1, wherein the medium is in tape format.
Claim 7
Dependent Claim
13 words
The medium of claim 1, wherein the organo macrocyclic chromophore is an aza-annulene.
Claim 8
Dependent Claim
17 words
The medium of claim 1, wherein the organo macrocyclic chromophore is a phthalocyanine, naphthalocyanine, porphyrin or tetrabenzoporphyrin.
Claim 9
Dependent Claim
28 words
The medium of claim 1, wherein the constituent metal atom is Ge, Sn, a transition metal, Al, Ga, In, an alkaline earth metal, lanthanide metal or actinide metal.
Claim 10
Dependent Claim
14 words
The medium of claim 1, wherein the constituent metal atom is central metal atom.
Claim 11
Dependent Claim
14 words
The medium of claim 9, wherein the central metal atom is a transition metal.
Claim 12
Dependent Claim
20 words
The medium of claim 1, wherein the constituent metal atom is Ge, Sn, a transition metal, Al, Ga or In.
Claim 13
Dependent Claim
15 words
The medium of claim 1, wherein the polymer comprises imidazoline, pyridine or imidazole heterocyclic moieties.
Claim 14
Dependent Claim
14 words
The medium of claim 1, wherein the polymer comprises thiolate or carboxylate ionic moieties.
Claim 15
Dependent Claim
13 words
The medium of claim 1, wherein the medium comprises a thermally stable substrate.
Claim 16
Dependent Claim
60 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 pits, said layer being comprised of a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through its constituent metal atom.
Claim 17
Dependent Claim
60 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 pits, said layer being comprised of a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through its constituent metal atom.
Claim 18
Dependent Claim
13 words
The medium of claim 15, wherein the polymer is a dimer acid polyamide.
Claim 19
Dependent Claim
11 words
The medium of claim 15, wherein the polymer is a poly(vinylpyridine).
Claim 20
Dependent Claim
13 words
The medium of claim 15, wherein the organo macrocyclic chromophore is an aza-annulene.
Claim 21
Dependent Claim
15 words
The medium of claim 15, wherein the medium is in the shape of a disk.
Claim 22
Dependent Claim
28 words
The medium of claim 15, wherein the constituent metal atom is Ge, Sn, a transition metal, Al, Ga, In, an alkaline earth metal, lanthanide metal or actinide metal.
Claim 23
Dependent Claim
15 words
The medium of claim 15, wherein the constituent metal atom is a central metal atom.
Claim 24
Dependent Claim
14 words
The medium of claim 21, wherein the central metal atom is a transition metal.
Claim 25
Dependent Claim
37 words
An erasable optical data medium comprising an information layer comprised of a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 26
Dependent Claim
37 words
An erasable optical data medium comprising an information layer comprised of a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 27
Dependent Claim
18 words
The erasable optical data medium of claim 23, wherein the constituent metal atom is a centrol metal atom.
Claim 28
Dependent Claim
18 words
The erasable optical data medium of claim 23, wherein the medium is in the form of a disk.
Claim 29
Dependent Claim
66 words
In an optical recording medium for use with a recording laser providing light of a predetermined frequency, and comprising a layer for the recording of information through the formation of pits, the improvement which comprises said layer being comprised of a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 30
Dependent Claim
66 words
In an optical recording medium for use with a recording laser providing light of a predetermined frequency, and comprising a layer for the recording of information through the formation of pits, the improvement which comprises said layer being comprised of a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 31
Dependent Claim
17 words
The optical recording medium of claim 26, wherein the constituent metal atom is a central metal atom.
Claim 32
Independent Claim
69 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 pits in the film, the improvement which comprises said film being comprised of a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 33
Independent Claim
69 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 pits in the film, the improvement which comprises said film being comprised of a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 34
Dependent Claim
17 words
The method of recording of claim 28, wherein the constituent metal atom is a central metal atom.
Claim 35
Independent Claim
74 words
A method of erasing a deformation information pattern of an optical information medium, which deformation pattern 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 a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 36
Independent Claim
74 words
A method of erasing a deformation information pattern of an optical information medium, which deformation pattern 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 a polymer and an organo macrocyclic chromophore containing a constituent metal atom, with the chromophore being chemically coordinated to the polymer through the constituent metal atom.
Claim 37
Dependent Claim
17 words
The method of erasing of claim 30, wherein the constituent metal atom is a central metal atom.
Claim 38
Dependent Claim
91 words
The medium in claim 1, wherein the chromophore is of the following formula: ##STR3## wherein the X substituents are independently selected organic or inorganic substituents and can be the same or different, with n and m indicating the number of independently selected X substituents, each n being the same or different and ranging from 0 to 4, and each m being the same or different and ranging from 0 to 2; and, Y is a Ge, Sn, transition metal, Al, Ga, In, alkaline earth metal, lanthanide metal or actinide metal atom.
Claim 39
Dependent Claim
11 words
The medium of claim 32, wherein Y is a transition metal.
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) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |