EP0363147A2
Expired / Lapsed
EP
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Recording and reproducing apparatus and recording and reproducing method and recording medium for the recording and reproducing method
Assignee: Canon Inc
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Filing: 1989-10-03
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Granted: —
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Expires: 2009-10-03
Abstract
Abstract A recording-reproducing apparatus, comprising a material (1), in which an intramolecular electron distribution can be changed, by electromagnetic wave irradiation and electric field application, a probe electrode (2) brought close to the material, a means (15) for projecting an electromagnetic wave onto the material, and a means (8) for applying an electric field between the material and the probe electrode, is provided.
Inventors
- 👤 Haruki Kawada
- 👤 Hiroshi Matsuda
- 👤 Kiyoshi Takimoto
- 👤 Hiroyasu Nose
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:49
CPC Classifications
G; G11; G11B; G11B9/00; G11B9/12; G11B9/14; G11B11/00; G11B11/08; G11B13/00; G11B13/06; G11B9/1463; G11B9/149; B; B82; B82Y; B82Y10/00; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S977/00; Y10S977/84; Y10S977/849; Y10S977/86; Y10S977/868; Y10S977/902; Y10S977/932; Y10S977/943; Y10S977/947
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
56 words
A recording-reproducing apparatus, comprising a material, in which an intramolecular electron distribution can be changed, by electromagnetic wave irradiation and electric field application, a probe electrode brought close to the material, a means for projecting an electromagnetic wave onto the material, and a means for applying an electric field between the material and the probe electrode.
Claim 2
Dependent Claim
56 words
A recording-reproducing apparatus, comprising a material, in which an intramolecular electron distribution can be changed, by electromagnetic wave irradiation and electric field application, a probe electrode brought close to the material, a means for projecting an electromagnetic wave onto the material, and a means for applying an electric field between the material and the probe electrode.
Claim 3
Dependent Claim
38 words
The recording-reproducing apparatus of Claim 1, wherein the apparatus comprises a means for applying a bias voltage between the probe electrode and the material, and a means for detecting current flowing between the probe electrode and the material.
Claim 4
Dependent Claim
19 words
The recording-reproducing apparatus of Claim 1, wherein said material is deposited on an electrode according to the Langmuir-Blodgett process.
Claim 5
Dependent Claim
58 words
A recording-reproducing apparatus, comprising a recording medium, in which a material capable of causing a proton-transfer by photoisomerization is deposited on an electrode; a probe electrode brought close to the recording medium; a means for projecting an electromagnetic wave onto the recording medium; and a means for applying electric field between the recording medium and the probe electrode.
Claim 6
Dependent Claim
58 words
A recording-reproducing apparatus, comprising a recording medium, in which a material capable of causing a proton-transfer by photoisomerization is deposited on an electrode; a probe electrode brought close to the recording medium; a means for projecting an electromagnetic wave onto the recording medium; and a means for applying electric field between the recording medium and the probe electrode.
Claim 7
Dependent Claim
55 words
The recording-reproducing apparatus of Claim 4, wherein the material is selected from the group of compounds consisting of azo compounds, styrene derivatives and imino compounds having a quinone group and hydroquione group in the molecule, and azo compounds, styrene derivatives and imino compounds, styrene derivatives and imino compounds having two amino groups in the molecule.
Claim 8
Dependent Claim
38 words
The recording-reproducing apparatus of Claim 4, wherein the apparatus comprises a means for applying a bias voltage between the probe electrode and the material, and a means for detecting current flowing between the probe electrode and the material.
Claim 9
Dependent Claim
20 words
The recording-reproducing apparatus of Claim 4, wherein the recording medium is deposited on the electrode according to the Langmuir-Blodgette process.
Claim 10
Dependent Claim
51 words
A recording-reproducing apparatus, comprising a recording medium, in which a charge transfer complex is deposited on an electrode, a probe electrode brought close to the recording medium, a means for projecting light onto the recording medium, and a means for applying electric field between the recording medium and the probe electrode.
Claim 11
Dependent Claim
51 words
A recording-reproducing apparatus, comprising a recording medium, in which a charge transfer complex is deposited on an electrode, a probe electrode brought close to the recording medium, a means for projecting light onto the recording medium, and a means for applying electric field between the recording medium and the probe electrode.
Claim 12
Dependent Claim
25 words
The recording-reproducing apparatus of Claim 8, wherein the charge transfer complex is composed of a metal or a metal ion and an organic electron acceptor.
Claim 13
Dependent Claim
38 words
The recording reproducing apparatus of Claim 9, wherein the charge transfer complex is selected from the group consisting of n-octadecyltetracyanoquinodimethan copper complex (ODTCNQ/Cu), n-dodecyltetracyanoquinodimethan copper complex (DDTCNQ/Cu), n-octadecyltetracyanoquinodimethan silver complex (ODTCNQ/Ag), n-dodecyltetracyanoquinodimethan silver complex (DDTCNQ/Ag), and their derivatives.
Claim 14
Dependent Claim
19 words
The recording-reproducing apparatus of Claim 8, wherein a monomolecular film of the charge-transfer complex is deposited on the electrode.
Claim 15
Dependent Claim
40 words
The recording-reproducing apparatus if Claim 8, wherein the apparatus comprises a means for applying a bias voltage between the probe electrode and the recording medium, and a means for detecting current flowing between the probe electrode and the recording medium.
Claim 16
Dependent Claim
51 words
A recording method comprising projecting an electromagnetic wave and simultaneously applying electric field onto a material, in which intramolecular electron distribution can be changed, by electromagnetic wave projection and electric field application to cause change in the electron distribution in the molecule of the material to write information, thereby conducting information-recording.
Claim 17
Dependent Claim
51 words
A recording method comprising projecting an electromagnetic wave and simultaneously applying electric field onto a material, in which intramolecular electron distribution can be changed, by electromagnetic wave projection and electric field application to cause change in the electron distribution in the molecule of the material to write information, thereby conducting information-recording.
Claim 18
Dependent Claim
67 words
A recording-reproducing method, comprising conducting information-recording by projecting an electromagnetic wave and simultaneously applying electric field onto a material, in which intramolecular electron distribution can be changed, by electromagnetic wave projection and electric field application thereby causing change in the electron distribution in the molecule of the material to write information; and conducting information readout by detecting a current at the portion where the information is recorded.
Claim 19
Dependent Claim
67 words
A recording-reproducing method, comprising conducting information-recording by projecting an electromagnetic wave and simultaneously applying electric field onto a material, in which intramolecular electron distribution can be changed, by electromagnetic wave projection and electric field application thereby causing change in the electron distribution in the molecule of the material to write information; and conducting information readout by detecting a current at the portion where the information is recorded.
Claim 20
Dependent Claim
88 words
A recording-reproducing-erasing method, comprising conducting information-recording by projecting an electromagnetic wave and simultaneously applying electric field onto a material in which intramolecular electron distribution can be changed, by electromagnetic wave projection and electric field application thereby causing change in the electron distribution in the molecule of the material to write information; conducting information readout by detecting a current at the portion where the information is recorded; and erasing the information by projecting an electromagnetic wave and simultaneously applying electric field onto the portion where the information is recorded.
Claim 21
Dependent Claim
88 words
A recording-reproducing-erasing method, comprising conducting information-recording by projecting an electromagnetic wave and simultaneously applying electric field onto a material in which intramolecular electron distribution can be changed, by electromagnetic wave projection and electric field application thereby causing change in the electron distribution in the molecule of the material to write information; conducting information readout by detecting a current at the portion where the information is recorded; and erasing the information by projecting an electromagnetic wave and simultaneously applying electric field onto the portion where the information is recorded.
Claim 22
Dependent Claim
83 words
A recording-reproducing-erasing method, comprising conducting information-recording by projecting an electromagnetic wave and simultaneously applying electric field onto a material, in which intramolecular electron distribution can be changed, by electromagnetic wave projection and electric field application thereby causing change in the electron distribution in the molecule of the material to write information; conducting information readout by detecting a current at the portion where the information is recorded; and erasing the information by introducing a vibration energy to the portion where the information is recorded.
Claim 23
Dependent Claim
83 words
A recording-reproducing-erasing method, comprising conducting information-recording by projecting an electromagnetic wave and simultaneously applying electric field onto a material, in which intramolecular electron distribution can be changed, by electromagnetic wave projection and electric field application thereby causing change in the electron distribution in the molecule of the material to write information; conducting information readout by detecting a current at the portion where the information is recorded; and erasing the information by introducing a vibration energy to the portion where the information is recorded.
Claim 24
Dependent Claim
17 words
A recording medium, comprising providing a material capable of causing a proton-transfer by photoisomerization on a substrate.
Claim 25
Dependent Claim
17 words
A recording medium, comprising providing a material capable of causing a proton-transfer by photoisomerization on a substrate.
Claim 26
Dependent Claim
50 words
The recording medium of Claim 17, wherein the material is selected from the group of compounds consisting of azo comounds, styrene derivatives and imino compounds having a quinone group and hydroquinone group in the molecule, and azo compounds, styrene derivatives and imino compounds having two amino groups in the molecule.
Claim 27
Dependent Claim
19 words
The recording medium of Claim 17, wherein a monomolecular film or its laminated film is formed on a substrate.
Claim 28
Dependent Claim
31 words
A recording medium comprising a substrate carrying a compound which can be converted into different isomers by non-chemical means to alter the response of the medium to an external electric field.
Claim 29
Dependent Claim
31 words
A recording medium comprising a substrate carrying a compound which can be converted into different isomers by non-chemical means to alter the response of the medium to an external electric field.
Claim 30
Dependent Claim
37 words
A recording medium comprising a substrate carrying a compound which is in first and second states of different electron distribution in different regions, data being recoverable by scanning the medium and determining the state of the regions.
Claim 31
Dependent Claim
37 words
A recording medium comprising a substrate carrying a compound which is in first and second states of different electron distribution in different regions, data being recoverable by scanning the medium and determining the state of the regions.
Claim 32
Dependent Claim
35 words
A reproducing apparatus comprising a compound having states of different intramolecular electron distribution between which it can be altered by non-chemical means and means for scanning the medium to determine the state of the compound.
Claim 33
Dependent Claim
35 words
A reproducing apparatus comprising a compound having states of different intramolecular electron distribution between which it can be altered by non-chemical means and means for scanning the medium to determine the state of the compound.
References Cited (Backward Citations)
No citation records indexed.
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