DE3486405D1 - Optisches Speicherelement. - Google Patents

Optisches Speicherelement.

Info

Publication number
DE3486405D1
DE3486405D1 DE3486405T DE3486405T DE3486405D1 DE 3486405 D1 DE3486405 D1 DE 3486405D1 DE 3486405 T DE3486405 T DE 3486405T DE 3486405 T DE3486405 T DE 3486405T DE 3486405 D1 DE3486405 D1 DE 3486405D1
Authority
DE
Germany
Prior art keywords
storage element
optical storage
optical
storage
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.)
Expired - Lifetime
Application number
DE3486405T
Other languages
English (en)
Other versions
DE3486405T2 (de
Inventor
Kenji Ohta
Junji Hirokane
Hiroyuki Katayama
Akira Takahashi
Hideyoshi Yamaoka
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
Priority claimed from JP8461383A external-priority patent/JPS59210547A/ja
Priority claimed from JP379784A external-priority patent/JPS60147946A/ja
Application filed by Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE3486405D1 publication Critical patent/DE3486405D1/de
Publication of DE3486405T2 publication Critical patent/DE3486405T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Optical Record Carriers (AREA)
DE3486405T 1983-05-13 1984-05-10 Optisches Speicherelement. Expired - Lifetime DE3486405T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8461383A JPS59210547A (ja) 1983-05-13 1983-05-13 光メモリ素子の製造方法
JP379784A JPS60147946A (ja) 1984-01-10 1984-01-10 光メモリ素子の製造方法

Publications (2)

Publication Number Publication Date
DE3486405D1 true DE3486405D1 (de) 1995-10-12
DE3486405T2 DE3486405T2 (de) 1996-04-04

Family

ID=26337437

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8484303176T Expired - Lifetime DE3485354D1 (de) 1983-05-13 1984-05-10 Verfahren zur erzeugung eines optischen speicherelements.
DE3486405T Expired - Lifetime DE3486405T2 (de) 1983-05-13 1984-05-10 Optisches Speicherelement.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE8484303176T Expired - Lifetime DE3485354D1 (de) 1983-05-13 1984-05-10 Verfahren zur erzeugung eines optischen speicherelements.

Country Status (4)

Country Link
US (1) US4544443A (de)
EP (2) EP0126594B1 (de)
CA (1) CA1234684A (de)
DE (2) DE3485354D1 (de)

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60117436A (ja) * 1983-11-29 1985-06-24 Sharp Corp 磁気光学記憶素子
JPS60177449A (ja) * 1984-02-22 1985-09-11 Daicel Chem Ind Ltd 光学式情報記録担体
DE3583754D1 (de) * 1984-03-16 1991-09-19 Sharp Kk Verfahren zur herstellung eines optischen speicherelements.
US4719137A (en) * 1984-04-13 1988-01-12 Sharp Kabushiki Kaisha Magneto-optic memory element
US4740947A (en) * 1984-04-25 1988-04-26 Sharp Kabushiki Kaisha Dual surface optical memory disc
US4917751A (en) * 1984-05-11 1990-04-17 Sharp Kabushiki Kaisha Method of producing double sided optical memory disks
US4999260A (en) * 1984-05-31 1991-03-12 Canon Kabushiki Kaisha Magneto-optical recording medium comprising a rare-earth-transition metal dispersed in a dielectric
US4851096A (en) * 1984-07-07 1989-07-25 Kyocera Corporation Method for fabricating a magneto-optical recording element
US4680742A (en) * 1984-07-07 1987-07-14 Kyocera Corporation Magneto-optical recording element
JPH0648546B2 (ja) * 1984-07-14 1994-06-22 日本ビクター株式会社 情報記録担体の製造法
US4777068A (en) * 1984-08-10 1988-10-11 Canon Kabushiki Kaisha Optical recording medium
US4939023A (en) * 1984-08-13 1990-07-03 Canon Kabushiki Kaisha Opto-magnetic recording medium
US5341362A (en) * 1984-08-20 1994-08-23 Sharp Kabushiki Kaisha Optical memory device having guide tracks shaped for increasing the quality of information signals
JPS6157052A (ja) * 1984-08-28 1986-03-22 Canon Inc 光学的記録媒体
US5529854A (en) * 1984-09-12 1996-06-25 Seiko Epson Corporation Magneto-optic recording systems
US5100741A (en) * 1984-09-12 1992-03-31 Seiko Epson Corporation Magneto-optic recording systems
JPS6185653A (ja) * 1984-10-02 1986-05-01 Sharp Corp 光磁気メモリ素子
DE3581378D1 (de) * 1984-11-12 1991-02-21 Sumitomo Spec Metals Senkrecht magnetisiertes aufzeichnungsmedium und verfahren zu seiner herstellung.
JPH0697514B2 (ja) * 1985-02-21 1994-11-30 シャープ株式会社 磁気光学記憶素子
JPS61193886A (ja) * 1985-02-22 1986-08-28 Tdk Corp 光記録媒体
DE3511712C2 (de) * 1985-03-29 1995-09-07 Polygram Gmbh Plattenförmiger Informationsträger und Verfahren zu seiner Herstellung
US4632898A (en) * 1985-04-15 1986-12-30 Eastman Kodak Company Process for fabricating glass tooling
DE3682985D1 (de) * 1985-08-30 1992-01-30 Sharp Kk Verfahren zur herstellung eines optischen verzeichniselementes.
US4764441A (en) * 1985-11-22 1988-08-16 Sharp Kabushiki Kaisha Photo-mask for production of substrate for optical memory element
JPS62128944A (ja) * 1985-11-27 1987-06-11 Sharp Corp 光メモリ素子
JPH0648545B2 (ja) * 1986-01-21 1994-06-22 共同印刷株式会社 プリフォーマッティング用ピットのパターンを持った光記録媒体及びその製造方法
JPS62267950A (ja) * 1986-05-16 1987-11-20 Sumitomo Electric Ind Ltd 磁気光学記録媒体
US4807204A (en) * 1986-07-07 1989-02-21 Brother Kogyo Kabushiki Kaisha Magneto-optical recording medium having pairs of mutually corresponding recording segments, and apparatus for recording information on the medium
DE3751348T2 (de) * 1986-10-29 1996-01-04 Dainippon Printing Co Ltd Aufzeichnungsmedium vom draw-typ.
LU86722A1 (fr) * 1986-12-23 1988-07-14 Glaverbel Feuille en matiere vitreuse portant un dessin grave et procede pour graver un dessin sur un substrat en matiere vitreuse
JPS6486344A (en) * 1987-09-29 1989-03-31 Victor Company Of Japan Information recording carrier and production thereof
US5260150A (en) * 1987-09-30 1993-11-09 Sharp Kabushiki Kaisha Photo-mask with light shielding film buried in substrate
US5079113A (en) * 1988-09-29 1992-01-07 Sharp Kabushiki Kaisha Photo-mask
US4995024A (en) * 1987-10-30 1991-02-19 Kyocera Corporation Magneto-optical recording element
GB8728272D0 (en) * 1987-12-03 1988-01-06 Pilkington Plc Method of producing surface microstructure on glass
US5270987A (en) * 1988-02-08 1993-12-14 Hitachi, Ltd. Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor
JP2680591B2 (ja) * 1988-02-15 1997-11-19 シャープ株式会社 光メモリ素子の製造方法
JPH01208743A (ja) * 1988-02-15 1989-08-22 Sharp Corp 光カード並びにその製造方法
DE3824889A1 (de) * 1988-07-22 1990-01-25 Leybold Ag Optischer aufzeichnungstraeger
JPH02223040A (ja) * 1988-11-04 1990-09-05 Fuji Photo Film Co Ltd 光磁気記録媒体
NL8900362A (nl) * 1989-02-15 1990-09-03 Philips Nv Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager.
JP2846342B2 (ja) * 1989-06-07 1999-01-13 株式会社日立製作所 高密度光再生装置
FR2663439A1 (fr) * 1990-06-15 1991-12-20 Digipress Sa Procede pour le traitement et en particulier la gravure d'un substrat et substrat obtenu par ce procede.
KR0172861B1 (ko) * 1990-08-03 1999-04-15 이헌조 광자기 디스크구조
DE4029912A1 (de) * 1990-09-21 1992-03-26 Philips Patentverwaltung Verfahren zur bildung mindestens eines grabens in einer substratschicht
JP2982328B2 (ja) * 1991-01-23 1999-11-22 ソニー株式会社 高密度光ディスクの作製方法
US5350618A (en) * 1991-03-01 1994-09-27 Teijin Seiki Co., Ltd. Magnetic medium comprising a substrate having pits and grooves of specific shapes and depths
JP3006124B2 (ja) * 1991-04-10 2000-02-07 株式会社ニコン オーバーライト可能な光磁気記録媒体及びその記録再生装置
JP2693289B2 (ja) * 1991-08-09 1997-12-24 シャープ株式会社 光メモリ
US5768075A (en) * 1991-12-17 1998-06-16 Baradun R&D Ltd. Disk medium w/magnetically filled features aligned in rows and columns
JPH05198016A (ja) * 1992-01-21 1993-08-06 Sharp Corp 光メモリ素子用原盤及びその製造方法
SG45390A1 (en) * 1992-07-09 1998-01-16 Pilkington Plc Glass substrate for a magnet disc and manufacture thereof
GB9400259D0 (en) * 1994-01-07 1994-03-02 Pilkington Plc Substrate for a magnetic disc and manufacture thereof
US5896365A (en) * 1995-04-28 1999-04-20 Canon Kabushiki Kaisha Optical information recording medium capable of recording in lands and grooves without a track-jumping operation; optical information recording/reproducing apparatus using, and master disk exposure apparatus for producing the same
SE9703480D0 (sv) * 1997-07-16 1997-09-25 Toolex Alpha Ab Stamper and method of manufacturing the same
KR100234291B1 (ko) * 1997-09-12 1999-12-15 윤종용 광디스크 제작용 마스타 디스크 제조방법
AU3779199A (en) * 1998-05-06 1999-11-23 Seagate Technology, Inc. An etched glass disk process
FR2906925A1 (fr) * 2006-10-05 2008-04-11 Commissariat Energie Atomique Substrat pour support d'enregistrement optique comportant au moins une partie inorganique et procede de fabrication.
US8367460B2 (en) 2010-06-22 2013-02-05 Micron Technology, Inc. Horizontally oriented and vertically stacked memory cells

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3571489A (en) * 1966-12-23 1971-03-16 Max Levy & Co Inc Transparent substrate having graded optical density conductors thereon
US3542453A (en) * 1967-10-25 1970-11-24 Frederick W Kantor Grating device composed of elongated layers
US3585121A (en) * 1967-11-17 1971-06-15 Nat Res Dev Diffraction gratings
BE756729A (fr) * 1969-10-04 1971-03-01 Soc Gen Semiconduttori Spa Procede de production de dispositifs a
DE2031515C3 (de) * 1970-06-25 1982-04-15 Siemens AG, 1000 Berlin und 8000 München Verfahren zum Auslesen von Informationen
US4004044A (en) * 1975-05-09 1977-01-18 International Business Machines Corporation Method for forming patterned films utilizing a transparent lift-off mask
JPS5352104A (en) * 1976-10-22 1978-05-12 Fuji Photo Film Co Ltd Production of disc recording disc
NL7902542A (nl) * 1979-04-02 1980-10-06 Philips Nv Optische registratie-inrichting met meerdere ablatieve registreerlagen.
DE3040489A1 (de) * 1980-10-28 1982-05-27 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Aufzeichnungstraeger mit einer aufzeichnung hoher informationsdichte
US4423137A (en) * 1980-10-28 1983-12-27 Quixote Corporation Contact printing and etching method of making high density recording medium
DE3229573A1 (de) * 1981-08-17 1983-02-24 RCA Corp., 10020 New York, N.Y. Optisches aufzeichnungsmaterial, informationstraeger und verfahren zum herstellen eines optischen aufzeichnungsmaterials
US4405677A (en) * 1981-09-28 1983-09-20 Xerox Corporation Post treatment of perpendicular magnetic recording media
DE3583754D1 (de) * 1984-03-16 1991-09-19 Sharp Kk Verfahren zur herstellung eines optischen speicherelements.

Also Published As

Publication number Publication date
EP0446967A2 (de) 1991-09-18
DE3486405T2 (de) 1996-04-04
EP0126594A1 (de) 1984-11-28
EP0446967A3 (en) 1992-01-29
CA1234684A (en) 1988-04-05
US4544443A (en) 1985-10-01
EP0446967B1 (de) 1995-09-06
EP0126594B1 (de) 1991-12-18
DE3485354D1 (de) 1992-01-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN