EP0272935A2
Expired / Lapsed
EP
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Recording device and reproducing device
Assignee: Canon Inc
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Filing: 1987-12-23
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Granted: —
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Expires: 2007-12-23
Abstract
Abstract A recording device, comprising a probe electrode, a recording medium having electric memory effect and a writing voltage applying means for applying voltage onto the recording medium from said probe electrode, and a reproducing device comprising a probe electrode, a recording medium exhibiting electric memory effect or a recording medium recorded by energy irradiation, a voltage applying means for applying voltage not exceeding the threshold value voltage giving rise to electric memory effect onto the recording medium from said probe electrode and a reading means for reading the change in current quantity passing through said recording medium.
Inventors
- 👤 Ken Eguchi
- 👤 Haruki Kawada
- 👤 Kunihiro Sakai
- 👤 Hiroshi Matsuda
- 👤 Yuko Morikawa
- 👤 Takashi Nakagiri
- 👤 Takashi Hamamoto
- 👤 Masaki Kuribayashi
- 👤 Hisaaki Kawade
- 👤 Yoshihiro Yanagisawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 20:44
CPC Classifications
G; G11; G11B; G11B9/00; G11B9/12; G11B9/14; G11B9/1418; G11B9/1427; G11B9/1436; B; B82; B82Y; B82Y10/00; G03; G03G; G03G5/00; G11B11/00; G11B11/002; G11B11/007; G11B11/08; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/248; G11B7/249; G11B9/04; G11B9/08; G11B9/1409; G11B9/1463; G11B9/149; G01; G01Q; G01Q80/00; Y; Y10; Y10S; Y10S977/00; Y10S977/84; Y10S977/849; Y10S977/85; Y10S977/86; Y10S977/902; Y10S977/932; Y10S977/943; Y10S977/947
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
32 words
A recording device, comprising a probe electrode, a recording medium exhibiting an electric memory effect and a writing voltage applying means for applying voltage on the recording medium from said probe electrode.
Claim 2
Dependent Claim
32 words
A recording device, comprising a probe electrode, a recording medium exhibiting an electric memory effect and a writing voltage applying means for applying voltage on the recording medium from said probe electrode.
Claim 3
Dependent Claim
59 words
A reproducing device, comprising a probe electrode, a recording medium exhibiting electric memory effect, a voltage applying means which is arranged to apply a voltage not exceeding the threshold voltage giving rise to electric memory effect on the recording medium from said probe electrode and a reading means for reading the current quantity which passes through said recording medium.
Claim 4
Dependent Claim
59 words
A reproducing device, comprising a probe electrode, a recording medium exhibiting electric memory effect, a voltage applying means which is arranged to apply a voltage not exceeding the threshold voltage giving rise to electric memory effect on the recording medium from said probe electrode and a reading means for reading the current quantity which passes through said recording medium.
Claim 5
Dependent Claim
28 words
A device according to claim 1 or 2, wherein said recording medium comprises a monomolecular film of an organic compound or a built-up film of said monomolecular films.
Claim 6
Dependent Claim
25 words
A device according to claim 3, wherein said organic compound has a group having π-electron level and a group having δ-electron level in the molecule.
Claim 7
Dependent Claim
15 words
A device according to claim 3, wherein said organic compound is an organic dye compound.
Claim 8
Dependent Claim
52 words
A device according to claim 3, wherein said organic compound is at least one compound selected from dyes having a porphyrine skeleton, azulene type dyes cyanine type dyes, dyes having squarilium group, dyes having croconic methine group, condensed polycyclic aromatic compounds, condensed heterocyclic compounds, diacetylene polymers, tetraquinodimethane, tetrathiafluvalene and metal complex compounds.
Claim 9
Independent Claim
18 words
A device according to any preceding claim, wherein said recording medium comprises a semiconductor exhibiting electric memory effect.
Claim 10
Dependent Claim
17 words
A device according to claim 7, wherein said semiconductor is an amorphous semiconductor formed of a chalcogenide.
Claim 11
Dependent Claim
36 words
A device according to claim 8, wherein said chalcogenide contains at least one element of the groups III, IV, V and VI of the periodic table and at least one element of Se, Te and As.
Claim 12
Dependent Claim
13 words
A device according to claim 7, wherein said semiconductor is a silicon film.
Claim 13
Dependent Claim
15 words
A device according to claim 10, wherein said silicon film is an amorphous silicon film.
Claim 14
Dependent Claim
19 words
A device according to claim 11, wherein said amorphous silicon is a p⁺ /n/i laminate or n⁺ /p/i laminate.
Claim 15
Dependent Claim
12 words
A device according to claim 7, wherein semiconductor is an organic semiconductor.
Claim 16
Dependent Claim
20 words
A device according to claim 13, wherein said organic semiconductor is a compound containing an electron acceptor and a metal.
Claim 17
Dependent Claim
16 words
A device according to claim 14, wherein said electron acceptor is tetracyanoquinodimethane, tetracyanoethylene, or tetrafluorotetracyanoquinodimethane, tetracyanonaphthoquinodimethane.
Claim 18
Independent Claim
17 words
A device according to any preceding claim, wherein a plural number of said probe electrodes are provided.
Claim 19
Dependent Claim
46 words
A reproducing device, comprising a probe electrode, a recording medium written by an energy beam irradiation, a means for applying a voltage onto said recording medium from said probe electrode and a means for reading the change in the current quantity flowing through said recording medium.
Claim 20
Dependent Claim
46 words
A reproducing device, comprising a probe electrode, a recording medium written by an energy beam irradiation, a means for applying a voltage onto said recording medium from said probe electrode and a means for reading the change in the current quantity flowing through said recording medium.
Claim 21
Dependent Claim
25 words
A reproducing device according to claim 17, wherein said recording medium is formed of a semiconductive substance having a conductivity of 10⁻¹⁰ (ohm.cm)⁻¹ or higher.
Claim 22
Dependent Claim
25 words
A reproducing device according to claim 18, wherein said recording medium is formed of a semiconductive substance having a conductivity of 10⁻⁸ (ohm.cm)⁻¹ or higher.
Claim 23
Dependent Claim
62 words
A reproducing device according to claim 18 or 19, wherein said semiconductive substance is a semiconductive substance containing at least one selected from the group of elements consisting of elements of the group IVB, elements of the group III, elements of the group VB, elements of the group IIB and elements of the group VIB of the long period type periodic table.
Claim 24
Dependent Claim
39 words
A reproducing device according to claim 20, wherein said semiconductive substance is a semiconductive substance containing at least one selected from the group of substances consisting of Si, Ge, Ga, As, GaP, InAs, InP, CdS, CdSe, ZnO and ZnS.
Claim 25
Dependent Claim
31 words
A reproducing device according to any of claims 17 to 21, wherein said recording medium comprises a monomolecular film of an organic compound or a built-up film of said monomolecular films.
Claim 26
Dependent Claim
22 words
A reproducing device according to claim 22, wherein said organic compound has a group having π - electron level in the molecule.
Claim 27
Dependent Claim
46 words
A reproducing device according to claim 22, wherein said organic compound is at least one compound selected from the group consisting of aromatic polycyclic compounds, polymeric compounds having conjugated π bond, photochromic compounds, polypeptide compounds, a compound in a dye association state, and electron transfer complexes.
Claim 28
Dependent Claim
32 words
A generating device according to any of claims 17 to 24, wherein said energy ray is an electron beam, an ion beam, a laser beam, an X-ray, an UV-ray or visible light.
Claim 29
Independent Claim
27 words
A device according to any preceding claim, wherein said recording medium is disposed between said probe electrode and a counter-electrode disposed in opposition to said probe electrode.
Claim 30
Dependent Claim
29 words
A device according to claim 3 or 22, wherein said monomolecular film or built-up film has a film thickness in the range of several Å to several 1000 Å.
Claim 31
Dependent Claim
25 words
A device according to claim 27, wherein said monomolecular film or built-up film has a film thickness in the range of several Å to 500Å.
Claim 32
Dependent Claim
26 words
A device according to claim 28, wherein said monomolecular film or built-up film has a film thickness in the range of 10 Å to 200 Å.
Claim 33
Dependent Claim
24 words
A device according to claim 27, 28 or 29, wherein said monomolecular film or built-up film is a film formed by an LB method.
Claim 34
Independent Claim
17 words
A device according to any preceding claim, having a XY scanning driving means for said probe electrode.
Claim 35
Independent Claim
27 words
A device according to any of claims 1 to 30, comprising a means for fine controling three-dimensionally the relative positions of said probe electrode and recording medium.
Claim 36
Dependent Claim
17 words
A reproducing device according to claim 2 or 17, wherein said reading means has a servo circuit.
Claim 37
Dependent Claim
17 words
A reproducing device according to claim 2 or 17, wherein said reading means comprises an A/D transducer.
References Cited (Backward Citations)
No citation records indexed.
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