JPS56169238A - Magnetooptical storage disk - Google Patents

Magnetooptical storage disk

Info

Publication number
JPS56169238A
JPS56169238A JP7207380A JP7207380A JPS56169238A JP S56169238 A JPS56169238 A JP S56169238A JP 7207380 A JP7207380 A JP 7207380A JP 7207380 A JP7207380 A JP 7207380A JP S56169238 A JPS56169238 A JP S56169238A
Authority
JP
Japan
Prior art keywords
disk
magnetic film
layer
ultraviolet rays
thin
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.)
Pending
Application number
JP7207380A
Other languages
English (en)
Inventor
Kenji Oota
Toshihisa Deguchi
Akira Takahashi
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 JP7207380A priority Critical patent/JPS56169238A/ja
Publication of JPS56169238A publication Critical patent/JPS56169238A/ja
Pending 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
JP7207380A 1980-05-28 1980-05-28 Magnetooptical storage disk Pending JPS56169238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7207380A JPS56169238A (en) 1980-05-28 1980-05-28 Magnetooptical storage disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7207380A JPS56169238A (en) 1980-05-28 1980-05-28 Magnetooptical storage disk

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP32434490A Division JPH03205639A (ja) 1990-11-26 1990-11-26 磁気光学記憶装置
JP32434390A Division JPH03205632A (ja) 1990-11-26 1990-11-26 磁気光学記憶装置

Publications (1)

Publication Number Publication Date
JPS56169238A true JPS56169238A (en) 1981-12-25

Family

ID=13478859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7207380A Pending JPS56169238A (en) 1980-05-28 1980-05-28 Magnetooptical storage disk

Country Status (1)

Country Link
JP (1) JPS56169238A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610903A (en) * 1984-01-06 1986-09-09 Fuji Photo Film Co., Ltd. Magneto-optical disk memory
US4633451A (en) * 1982-06-30 1986-12-30 International Business Machines Corporation Optical servo for magnetic disks
US5972461A (en) * 1998-01-06 1999-10-26 Imation Corp. Rewritable optical data storage disk having enhanced flatness
KR20030044315A (ko) * 2001-11-29 2003-06-09 엘지전자 주식회사 고밀도 광기록재생방법, 그 장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5175523A (ja) * 1974-12-26 1976-06-30 Canon Kk
JPS52109193A (en) * 1976-03-11 1977-09-13 Kokusai Denshin Denwa Co Ltd Magnetoooptic memory medium
JPS5443199A (en) * 1977-09-13 1979-04-05 Kao Corp Production of foamable sodium percarbonate
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5175523A (ja) * 1974-12-26 1976-06-30 Canon Kk
JPS52109193A (en) * 1976-03-11 1977-09-13 Kokusai Denshin Denwa Co Ltd Magnetoooptic memory medium
JPS5443199A (en) * 1977-09-13 1979-04-05 Kao Corp Production of foamable sodium percarbonate
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633451A (en) * 1982-06-30 1986-12-30 International Business Machines Corporation Optical servo for magnetic disks
US4610903A (en) * 1984-01-06 1986-09-09 Fuji Photo Film Co., Ltd. Magneto-optical disk memory
US5972461A (en) * 1998-01-06 1999-10-26 Imation Corp. Rewritable optical data storage disk having enhanced flatness
KR20030044315A (ko) * 2001-11-29 2003-06-09 엘지전자 주식회사 고밀도 광기록재생방법, 그 장치

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