EP0191215A2
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EP
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Media for optical information storage comprising an organic macrocyclic chromophore substituted with a film conferring organic substituent
Assignee: Celanese Corp
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Filing: 1985-07-03
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Granted: —
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Expires: 2005-07-03
Abstract
Abstract Provided is an information recording medium, e.g., an optical recording medium, and a method for recording information thereon. The information layer of the recording medium comprises an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, e.g., a naphthalocyanine having silicon as the hetero atom, which 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 information layer thereby 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 dye/polymer mixtures is also overcome.
Inventors
- 👤 R. Sidney Jones, Jr.
- 👤 David E. Nikles
- 👤 Malcolm E. Kenney
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:21
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/248; C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; C07C17/14; C07F; C07F7/00; C07F7/02; C07F7/025; C07F7/08; C07F7/12; C07F7/18; C07F7/1804; C09; C09B; C09B47/00; C09B47/04; C09B47/045
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
40 words
A medium for storage of optical information comprising an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 2
Independent Claim
40 words
A medium for storage of optical information comprising an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 3
Dependent Claim
17 words
The medium of Claim 1, wherein the film conferring organic substituent is a monomer or an oligomer.
Claim 4
Dependent Claim
35 words
The medium of Claim 1, wherein the chromophore is substituted with the film conferring organic substituent at a central hetero atom, and the number of substitutions at the central hetero atom is 1 or 2.
Claim 5
Dependent Claim
30 words
The medium of Claim 1, wherein the chromophore is substituted with the film conferring organic substituent at an aromatic ring, and the number of substitutions is between 1 and 16.
Claim 6
Dependent Claim
23 words
The medium of Claim 2, wherein the film conferring organic substituent comprises ether, acid, amide, ester, sulfonamide, acrylate, epoxy, urethane or silicone units.
Claim 7
Dependent Claim
17 words
The medium of Claim 5, wherein the film conferring organic substituent comprises acid, amide or ester units.
Claim 8
Dependent Claim
29 words
The medium of Claim 1, wherein the organo macrocyclic dye substituted with at least one film conferring organic substituent comprises a chromophore portion of at least 25% by weight.
Claim 9
Dependent Claim
37 words
The medium of Claim 1, 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
14 words
The medium of Claim 8, wherein the hetero atom is Si, Ge or Sn.
Claim 11
Dependent Claim
43 words
The medium of Claim 1, 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
11 words
The medium of Claim 10, wherein the hetero atom is Si.
Claim 13
Dependent Claim
15 words
1 2. The medium of Claim 1, wherein the organo macrocyclic chromophore is an aza-annulene.
Claim 14
Dependent Claim
17 words
The medium of Claim 12, wherein the organo macrocyclic chromophore is a phthalocyanine, naphthalocyanine or substituted porphyrin.
Claim 15
Dependent Claim
27 words
The medium of Claim 1, wherein the chromophore contains a central hetero atom and the hetero atom is Si, with the organic macrocyclic chromophore being a naphthalocyanine.
Claim 16
Independent Claim
13 words
The medium of Claim I, wherein the chromophore contains two central hydrogen atoms.
Claim 17
Dependent Claim
14 words
The medium of Claim 1, wherein the chromophore contains two central isotopes of hydrogen.
Claim 18
Dependent Claim
16 words
A recording medium for storage of optical information comprising the information storage medium of Claim 1.
Claim 19
Dependent Claim
15 words
The recording medium of Claim 1, wherein the recording medium comprises a thermally stable substrate.
Claim 20
Dependent Claim
57 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 an organo macrocyclic chromophore containing a central hetero atom, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 21
Dependent Claim
57 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 an organo macrocyclic chromophore containing a central hetero atom, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 22
Dependent Claim
16 words
The information medium of Claim 17, wherein the medium is in the form of a disk.
Claim 23
Dependent Claim
51 words
An erasable information medium comprising a relatively thick and thermally stable substrate having coated thereon a layer comprised of an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 24
Dependent Claim
51 words
An erasable information medium comprising a relatively thick and thermally stable substrate having coated thereon a layer comprised of an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 25
Dependent Claim
17 words
The erasable information medium of Claim 19, wherein the medium is in the form of a disk.
Claim 26
Dependent Claim
44 words
In a recording medium for use with a recording laser providing light of a predetermined frequency, and comprising a layer for recording of the information through the formation of pits the improvement which comprises said information layer comprising the storage medium of Claim 1.
Claim 27
Independent Claim
75 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 an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 28
Independent Claim
75 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 an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 29
Independent Claim
79 words
A method of erasing a deformation information pattern of an 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 an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 30
Independent Claim
79 words
A method of erasing a deformation information pattern of an 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 an organo macrocyclic chromophore containing a central hetero atom or two central hydrogen atoms or isotopes of hydrogen, which chromophore is substituted with at least one organic substituent conferring film forming properties.
Claim 31
Dependent Claim
102 words
The medium of Claim 1, wherein the substituted chromophore is of the following formula: wherein the X substituents are independently selected organic 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; Z is an organic substituent with p representing the number of Z substituents, and p being either 0, 1 or 2; with at least one X or Z substituent conferring film forming properties.
References Cited (Backward Citations)
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