JPS5727494A - Magneto-optical storage element - Google Patents

Magneto-optical storage element

Info

Publication number
JPS5727494A
JPS5727494A JP10160480A JP10160480A JPS5727494A JP S5727494 A JPS5727494 A JP S5727494A JP 10160480 A JP10160480 A JP 10160480A JP 10160480 A JP10160480 A JP 10160480A JP S5727494 A JPS5727494 A JP S5727494A
Authority
JP
Japan
Prior art keywords
thin film
magnetic substance
deterioration
disc
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10160480A
Other languages
Japanese (ja)
Other versions
JPH0338661B2 (en
Inventor
Kenji Oota
Akira Takahashi
Toshihisa Deguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP10160480A priority Critical patent/JPS5727494A/en
Priority to US06/275,388 priority patent/US4414650A/en
Priority to FR8112234A priority patent/FR2485241B1/en
Priority to DE3124573A priority patent/DE3124573C2/en
Priority to GB8119345A priority patent/GB2081537B/en
Publication of JPS5727494A publication Critical patent/JPS5727494A/en
Publication of JPH0338661B2 publication Critical patent/JPH0338661B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form

Abstract

PURPOSE:To prevent corrosion of the thin film of magnetic substance and deterioration of magnetic characteristics caused by the effect of water vapor, by so constituting that a magnetic substance thin film can be interrupted from air surely. CONSTITUTION:On an upper surface of disc 1 made of glass such as coning micro sheet, or made of resin such as acryl and polycarbonate, an amorphous ferri-magnetic substance thin film 2 which is constituted in the various combination of the rare- earth class such as Sm, Eu, Gd, Tb, Dy, Ho, Er and transition metal such as Fe, Co, Ni is formed except external and internal edges, a disc 4 made of the said glass or resin is fixed to the upper plane of the internal and external edges of the said disc 1 and the thin film 2 via an infrared ray curing adhesive layer 3. Thus, the magnetic substance thin film 2 is perfectly interrupted from air and no deterioration such as corrosion and deterioration of magnetic characteristic can be caused.
JP10160480A 1980-06-23 1980-07-23 Magneto-optical storage element Granted JPS5727494A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP10160480A JPS5727494A (en) 1980-07-23 1980-07-23 Magneto-optical storage element
US06/275,388 US4414650A (en) 1980-06-23 1981-06-19 Magneto-optic memory element
FR8112234A FR2485241B1 (en) 1980-06-23 1981-06-22 MAGNETO-OPTICAL MEMORY ELEMENT
DE3124573A DE3124573C2 (en) 1980-06-23 1981-06-23 Magneto-optical storage medium
GB8119345A GB2081537B (en) 1980-06-23 1981-06-23 Magneto-optic memory element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10160480A JPS5727494A (en) 1980-07-23 1980-07-23 Magneto-optical storage element

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP7450092A Division JP2665295B2 (en) 1992-03-30 1992-03-30 Magneto-optical storage element

Publications (2)

Publication Number Publication Date
JPS5727494A true JPS5727494A (en) 1982-02-13
JPH0338661B2 JPH0338661B2 (en) 1991-06-11

Family

ID=14304985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10160480A Granted JPS5727494A (en) 1980-06-23 1980-07-23 Magneto-optical storage element

Country Status (1)

Country Link
JP (1) JPS5727494A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5954056A (en) * 1982-09-21 1984-03-28 Sharp Corp Magnetooptic storage element
JPS5996544A (en) * 1982-11-24 1984-06-04 Sony Corp Optical information recording medium
JPS6010431A (en) * 1983-06-29 1985-01-19 Canon Inc Optical recording medium
JPS60182535A (en) * 1984-03-01 1985-09-18 Sony Corp Optomagnetic recording medium
JPS615451A (en) * 1984-06-19 1986-01-11 Matsushita Electric Ind Co Ltd Information recording carrier
JPS6139950A (en) * 1984-07-31 1986-02-26 Matsushita Electric Ind Co Ltd Flat information recording medium
JPS6154054A (en) * 1984-08-23 1986-03-18 Matsushita Electric Ind Co Ltd Plate information recording medium
JPS61144744A (en) * 1984-12-17 1986-07-02 Kyocera Corp Optomagnetic recording medium and its production
JPS61153133U (en) * 1985-03-13 1986-09-22
JPS6243850A (en) * 1985-08-21 1987-02-25 Tdk Corp Photomagnetic recording medium
JPS6246448A (en) * 1985-08-23 1987-02-28 Tdk Corp Photomagnetic recording medium
JPS63167442A (en) * 1986-12-29 1988-07-11 Mitsubishi Kasei Corp Optical disk
JPH038153A (en) * 1989-06-05 1991-01-16 Sony Corp Magneto-optical recording medium
JPH03205629A (en) * 1990-11-27 1991-09-09 Toshiba Corp Production of optical information recording medium
JPH06342538A (en) * 1993-10-12 1994-12-13 Daicel Chem Ind Ltd Magneto-optical recording disk and its production

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5175523A (en) * 1974-12-26 1976-06-30 Canon Kk
JPS52109193A (en) * 1976-03-11 1977-09-13 Kokusai Denshin Denwa Co Ltd Magnetoooptic memory medium
JPS5489704A (en) * 1977-12-12 1979-07-17 Philips Nv Disk recording medium with coating layer
JPS54130902A (en) * 1978-03-22 1979-10-11 Philips Nv Multilayer information disk
JPS5528227U (en) * 1978-08-09 1980-02-23

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL184591C (en) * 1974-09-24 1989-09-01 Philips Nv CARGO TRANSFER.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5175523A (en) * 1974-12-26 1976-06-30 Canon Kk
JPS52109193A (en) * 1976-03-11 1977-09-13 Kokusai Denshin Denwa Co Ltd Magnetoooptic memory medium
JPS5489704A (en) * 1977-12-12 1979-07-17 Philips Nv Disk recording medium with coating layer
JPS54130902A (en) * 1978-03-22 1979-10-11 Philips Nv Multilayer information disk
JPS5528227U (en) * 1978-08-09 1980-02-23

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5954056A (en) * 1982-09-21 1984-03-28 Sharp Corp Magnetooptic storage element
JPH0479075B2 (en) * 1982-09-21 1992-12-14 Sharp Kk
JPS5996544A (en) * 1982-11-24 1984-06-04 Sony Corp Optical information recording medium
JPH0413777B2 (en) * 1982-11-24 1992-03-10 Sony Corp
US4710418A (en) * 1983-06-29 1987-12-01 Canon Kabushiki Kaisha Optical recording medium
JPS6010431A (en) * 1983-06-29 1985-01-19 Canon Inc Optical recording medium
JPS60182535A (en) * 1984-03-01 1985-09-18 Sony Corp Optomagnetic recording medium
JPS615451A (en) * 1984-06-19 1986-01-11 Matsushita Electric Ind Co Ltd Information recording carrier
JPS6139950A (en) * 1984-07-31 1986-02-26 Matsushita Electric Ind Co Ltd Flat information recording medium
JPS6154054A (en) * 1984-08-23 1986-03-18 Matsushita Electric Ind Co Ltd Plate information recording medium
JPH0580735B2 (en) * 1984-08-23 1993-11-10 Matsushita Electric Ind Co Ltd
JPS61144744A (en) * 1984-12-17 1986-07-02 Kyocera Corp Optomagnetic recording medium and its production
JPS61153133U (en) * 1985-03-13 1986-09-22
JPS6243850A (en) * 1985-08-21 1987-02-25 Tdk Corp Photomagnetic recording medium
JPS6246448A (en) * 1985-08-23 1987-02-28 Tdk Corp Photomagnetic recording medium
JPS63167442A (en) * 1986-12-29 1988-07-11 Mitsubishi Kasei Corp Optical disk
JPH053058B2 (en) * 1986-12-29 1993-01-13 Mitsubishi Chem Ind
JPH038153A (en) * 1989-06-05 1991-01-16 Sony Corp Magneto-optical recording medium
JPH03205629A (en) * 1990-11-27 1991-09-09 Toshiba Corp Production of optical information recording medium
JPH06342538A (en) * 1993-10-12 1994-12-13 Daicel Chem Ind Ltd Magneto-optical recording disk and its production

Also Published As

Publication number Publication date
JPH0338661B2 (en) 1991-06-11

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