JPS5727451A - Magnetooptic storage element - Google Patents

Magnetooptic storage element

Info

Publication number
JPS5727451A
JPS5727451A JP10160280A JP10160280A JPS5727451A JP S5727451 A JPS5727451 A JP S5727451A JP 10160280 A JP10160280 A JP 10160280A JP 10160280 A JP10160280 A JP 10160280A JP S5727451 A JPS5727451 A JP S5727451A
Authority
JP
Japan
Prior art keywords
thin film
disk
glass
film
amorphous ferrimagnetic
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
JP10160280A
Other languages
Japanese (ja)
Other versions
JPH02778B2 (en
Inventor
Kenji Oota
Shozo Kobayashi
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 JP10160280A priority Critical patent/JPS5727451A/en
Publication of JPS5727451A publication Critical patent/JPS5727451A/en
Publication of JPH02778B2 publication Critical patent/JPH02778B2/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

Abstract

PURPOSE:To protect a recording medium in the process of production using an amorphous ferrimagnetic substance as a recording material, by using an ultraviolet ray hardener and at the same time forming immediately a dielectric thin film on the amorphous ferrimagnetic film. CONSTITUTION:An amorphous ferrimagnetic thin film 2 of GdTbFe, CdDyFe, TbFe, DyFe, CdTbFeNi,HoCo, TbCo, etc. plus a transparent dielectric thin film 3 of SiO2, SiO, etc. are formed on a glass disk of the soda glass, a coning microsheet, etc. or a disk 1 made of resin such as the acrylic, polycarbonate through a vacuum vapor deposition, a sputtering process, an ion plating process or the like. Then said glass or resin disk is adhered on the upper surface of the film 3 by means of an adhesive layer cured by the ultraviolet ray irradiation such as ''Fortbond, Locktight X-353 ''.
JP10160280A 1980-07-23 1980-07-23 Magnetooptic storage element Granted JPS5727451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10160280A JPS5727451A (en) 1980-07-23 1980-07-23 Magnetooptic storage element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10160280A JPS5727451A (en) 1980-07-23 1980-07-23 Magnetooptic storage element

Publications (2)

Publication Number Publication Date
JPS5727451A true JPS5727451A (en) 1982-02-13
JPH02778B2 JPH02778B2 (en) 1990-01-09

Family

ID=14304929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10160280A Granted JPS5727451A (en) 1980-07-23 1980-07-23 Magnetooptic storage element

Country Status (1)

Country Link
JP (1) JPS5727451A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60191451A (en) * 1984-03-12 1985-09-28 Daicel Chem Ind Ltd Manufacture of photomagnetic recording medium
US4751142A (en) * 1985-09-18 1988-06-14 Kyocera Corporation Magneto-optical recording element
US4841501A (en) * 1986-03-03 1989-06-20 Daicel Chemical Industries, Ltd. Plastic substrate for optical disk and process for producing the same
WO1991011807A1 (en) * 1990-01-31 1991-08-08 Sony Corporation Optical disc system and optical disc
US5392263A (en) * 1990-01-31 1995-02-21 Sony Corporation Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens
US5910932A (en) * 1991-09-11 1999-06-08 Sony Corporation Optical disk and optical disk system with numerical aperture of objective lens related to protective layer thickness of optical disk

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50151035A (en) * 1974-05-23 1975-12-04
JPS5142087A (en) * 1974-10-09 1976-04-09 Fujitsu Ltd JIKIBABURUYO JISEIMAKUNO SEIZOHOHO
JPS5232931A (en) * 1975-09-09 1977-03-12 Fuji Heavy Ind Ltd Method for coating joint surfaces of two parts
JPS52109193A (en) * 1976-03-11 1977-09-13 Kokusai Denshin Denwa Co Ltd Magnetoooptic memory medium
JPS5424008A (en) * 1977-07-26 1979-02-23 Fujitsu Ltd Magnetic recording and photo reproducing system
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 (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50151035A (en) * 1974-05-23 1975-12-04
JPS5142087A (en) * 1974-10-09 1976-04-09 Fujitsu Ltd JIKIBABURUYO JISEIMAKUNO SEIZOHOHO
JPS5232931A (en) * 1975-09-09 1977-03-12 Fuji Heavy Ind Ltd Method for coating joint surfaces of two parts
JPS52109193A (en) * 1976-03-11 1977-09-13 Kokusai Denshin Denwa Co Ltd Magnetoooptic memory medium
JPS5424008A (en) * 1977-07-26 1979-02-23 Fujitsu Ltd Magnetic recording and photo reproducing system
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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60191451A (en) * 1984-03-12 1985-09-28 Daicel Chem Ind Ltd Manufacture of photomagnetic recording medium
US4751142A (en) * 1985-09-18 1988-06-14 Kyocera Corporation Magneto-optical recording element
US4841501A (en) * 1986-03-03 1989-06-20 Daicel Chemical Industries, Ltd. Plastic substrate for optical disk and process for producing the same
WO1991011807A1 (en) * 1990-01-31 1991-08-08 Sony Corporation Optical disc system and optical disc
US5392263A (en) * 1990-01-31 1995-02-21 Sony Corporation Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens
USRE37428E1 (en) 1990-01-31 2001-10-30 Sony Corporation Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens
US5910932A (en) * 1991-09-11 1999-06-08 Sony Corporation Optical disk and optical disk system with numerical aperture of objective lens related to protective layer thickness of optical disk

Also Published As

Publication number Publication date
JPH02778B2 (en) 1990-01-09

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