JPS60226046A - 光メモリ素子 - Google Patents

光メモリ素子

Info

Publication number
JPS60226046A
JPS60226046A JP59084599A JP8459984A JPS60226046A JP S60226046 A JPS60226046 A JP S60226046A JP 59084599 A JP59084599 A JP 59084599A JP 8459984 A JP8459984 A JP 8459984A JP S60226046 A JPS60226046 A JP S60226046A
Authority
JP
Japan
Prior art keywords
adhesive layer
optical memory
members
layer
adhesive
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
JP59084599A
Other languages
English (en)
Other versions
JPH044665B2 (ja
Inventor
Kenji Oota
賢司 太田
Akira Takahashi
明 高橋
Hiroyuki Katayama
博之 片山
Junji Hirokane
順司 広兼
Yoshiteru Murakami
善照 村上
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 JP59084599A priority Critical patent/JPS60226046A/ja
Publication of JPS60226046A publication Critical patent/JPS60226046A/ja
Priority to US07/061,034 priority patent/US4740947A/en
Publication of JPH044665B2 publication Critical patent/JPH044665B2/ja
Granted legal-status Critical Current

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    • 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
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1406—Ultraviolet [UV] radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1435—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1448—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface radiating the edges of the parts to be joined, e.g. for curing a layer of adhesive placed between two flat parts to be joined, e.g. for making CDs or DVDs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/4845—Radiation curing adhesives, e.g. UV light curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/487—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical
    • B29C65/4875—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical being spherical, e.g. particles or powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • B29C65/7823—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
    • B29C65/7826—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being non-integral with the parts to be joined, e.g. particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B29C66/452—Joining of substantially the whole surface of the articles the article having a disc form, e.g. making CDs or DVDs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/4885—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their composition being non-plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B29L2017/005—CD''s, DVD''s

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 〈発明の技術分野〉 本発明は光学的に情報の記録・再ヰ・消去等を行なう光
メモリ素子に関するものである。
〈発明の技術的背景とその問題点〉 近年、光メモリ素子は高密度大容量メモリとして注目さ
れており、中でも特に光メモリ円板は磁気テープ等に比
べて情報のアクセスが速いだめ、特に研究開発が活発に
行なわれている。
従来より提案されている情報の消去も可能な光磁気メモ
リ円板の構造の断面一部拡大図を第５図に示す。
第５図において、１及び５はそれぞれＰＭＭＡ等の樹脂
基板あるいはガラス基板等から成る透明円板であり、２
及び４はそれぞれ単層磁性膜または誘電体膜、磁性膜２
反射膜等より成る多層膜の記録層であり、３は紫外線硬
化剤等の接着剤層である。
このような構成にあっては２枚重ねの円板にすることに
より、円板の両面に情報を入れることが出＊ス各払　ｍ
が攻め小−１印見ユ争ハフ！　Ｉ＃　、＞　リ　−　１
瞥ットがあると共に、透明円板１及び５としてＰＭＭＡ
等の樹脂基板を用いた場合には基板のそり等の形状変化
を抑えることが出来るという利点もある。
しかし、一方円板の回転による振れまわりを低減するた
めに、円板の厚み公差及び接着層３の厚みむら等を厳し
く管理して円板状の光メモリ素子を製作する必要がある
。
〈発明の目的〉 本発明は上記諸点に鑑みて成されたものであり、２枚重
ねの光メモリ素子において接着層の厚みむらを無くした
構造の光メモリ素子を提供することを目的とし、この目
的を達成するため、本発明の光メモリ素子は記録層の形
成された第１及び第２の基板と、記録層を挾んで上記の
第１及び第２の基板を貼り合わせた接着層と、この接着
層に散在されたスペーサ部材とを備えるように構成され
ている。
〈発明の実施例〉 以下、本発明を図面を参照して詳細に説明する。
第１図は本発明の光メモリ素子の一実施例の構造を示す
一部拡大断面図である。
第１図において１及び５はそれぞれＰＭＭＡ等の樹脂基
板あるいはガラス基板等から成る透明円板、２及び４は
それぞれ上記の透明円板１及び５の対向する面上に形成
された単層磁性膜または誘電体膜２反射膜等より成る多
層膜の記録層、３は紫外線硬化型の接着剤層であり、こ
の接着剤層３中に本発明の特徴である球状のスペーサ部
材６が散在されている。
上記スペーサ部材６を屈折率が１．４〜１．６程度の透
明体で構成することにより、紫外線硬化型の接着剤の屈
折率とほぼ同じ値を示すことになり、この結果、この球
状のスペーサ部材６の存在を光学的には検出できなくな
り、見かけ上、第５図に示した従来の接着層のみのもの
と同じになり、かつ接着層の厚みの最小値は、この球状
のスペーサ部材６の直径精度によって正確に設定される
ことになる。
なお、スペーサ部材６の材質としてはガラスあるいはＰ
ＭＭＡ等の樹脂部材等が良く、また大きさは５０〜１０
０μｍの直径であることが望ましい０ 上記第１図に示した光メモリ素子を作る場合、次の順序
で行なわれる。
■　紫外線硬化型の未硬化の接着剤に上記の球状スペー
サ部材を体積比１００：１〜１０：１（接着剤ニスペー
サ）で混入させて、よく攪拌するＯ ■　上記のスペーサの入った接着剤中に含まれる気泡を
例えば真空引き等によって抜く。
■　接着剤を円板上に塗布する。
■　円板を重ねて位置合わせを行ない、第２図に示すよ
うに上下面から圧力を加える。このとき圧力を加えるだ
めの抑圧板７は円板直径よりも小さい直径を有する円形
をしているものが望ましいＯ ■　接着層の厚みがスペーサ部材で決定されるに充分な
圧力を加えた後、紫外線９を円板全面にように外周部に
記録膜が無く光が通過する構造をしているものとし、こ
のような構造により、スペーサの混入された接着層３′
のうち光の照射される１０の部分が硬化して、円板が滑
らなくなる。
以上のようにして第１図に示した構造の光メモリ素子が
作られるが、本発明の光メモリ素子の製造方法はこれに
限定されるものではない。
なお、接着剤として嫌気硬化性のものを使用することに
より、時間経過と共に未硬化部分が硬化するために更に
好都合である。
本発明は上記実施例に限定されるものではなく、種々の
変形が可能である。
例えばスペーサ部材６は球状である必要がなく、第４図
に示すように円柱状のスペーサ部材６′を用いることも
可能である。このような円柱状のスペーサ部材６′をガ
ラスで構成した場合には第４図における矢印ａの方向か
ら力を加えても形状が容易に変化しないのに対し、矢印
すのように斜めから力を加えた場合には円柱６′が折れ
てより短い円柱となり、従って適当な圧力を加えること
で最終的には円柱の直径にまで間隔が縮まることになる
。
またＰＭＭＡ等の樹脂材料をスペーサ部材６′として用
いる場合には円柱の高さを長くすることにより、円柱が
全て第４図に示すように倒れた形となり、最少間隔が容
易に決定されることになる。
また第２図における押え板７は必ずしも円形である必要
はなく、要は円板外周部あるいは内周部に設けられた記
録膜のない透明部分の一部に光が照射され得る形状であ
れば良い。
〈発明の効果〉 以上のように、本発明によれば記録層の形成された基板
間の接着層の厚みを容易にかつ精度良く均一にすること
が可能となり、その結果例えば円板状の光メモリ素子の
振れまわりに対する影響を大幅に低減することが出来る
。
【図面の簡単な説明】
第１図は本発明の光メモリ素子の一実施例の構造を示す
断面一部拡大図、第２図は本発明の光メモリ素子の製造
方法の一例を示す概略図、第′３図は第２図の製造方法
によって接着をした場合に硬化する部分を示す一部拡大
断面図、第４図はスペーサ部材の他の一例を示す図、第
５図は従来の光メモリ素子の構造を示す断面一部拡大図
である。 １・・・第１の透明基板、２・・・記録層、３・・・接
着層、３′　・・・スペーサ部材を含んだ接着層、４・
・・記録層、訃・・第２の透明基板、６・・・スペーサ
部材、１０・・・硬化部分。 代理人　弁理士　福　士　愛　彦（他２名）ＪＩＢ／　
図 第２ｒｊＡ 第３ｖＡ 第５図

Claims (1)

  1. 【特許請求の範囲】 １、記録層の形成された第１及び第２の基体と、記録層
    を挾んで上記第１及び第２の基体を貼り合わせた接着層
    と、 上記接着層に散在されたスペーサ部材とを備えたことを
    特徴とする光メモリ素子。 ２、上記スペーサ部材が透明体で構成されて成ることを
    特徴とする特許請求の範囲第１項記載の光メモリ素子。 ３、上記接着層は紫外線硬化性接着剤にて構成されたこ
    とを特徴とする特許請求の範囲第１項記載の光メモリ素
    子０ ４、上記接着層を形成する接着剤として紫外線硬化性を
    有する未硬化の接着剤中にスペーサ部材を混入した接着
    剤を使用したことを特徴とする特許請求の範囲第１項記
    載の光メモリ素子。
JP59084599A 1984-04-25 1984-04-25 光メモリ素子 Granted JPS60226046A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59084599A JPS60226046A (ja) 1984-04-25 1984-04-25 光メモリ素子
US07/061,034 US4740947A (en) 1984-04-25 1987-06-12 Dual surface optical memory disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59084599A JPS60226046A (ja) 1984-04-25 1984-04-25 光メモリ素子

Publications (2)

Publication Number Publication Date
JPS60226046A true JPS60226046A (ja) 1985-11-11
JPH044665B2 JPH044665B2 (ja) 1992-01-29

Family

ID=13835145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59084599A Granted JPS60226046A (ja) 1984-04-25 1984-04-25 光メモリ素子

Country Status (1)

Country Link
JP (1) JPS60226046A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01260647A (ja) * 1988-04-09 1989-10-17 Hitachi Maxell Ltd 光情報記録媒体
CN113039058A (zh) * 2018-11-16 2021-06-25 海拉有限双合股份公司 用于粘接两个彼此位置精确地设置的构件的方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59186150A (ja) * 1983-04-06 1984-10-22 Hoya Corp 光学式情報記録媒体

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59186150A (ja) * 1983-04-06 1984-10-22 Hoya Corp 光学式情報記録媒体

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01260647A (ja) * 1988-04-09 1989-10-17 Hitachi Maxell Ltd 光情報記録媒体
CN113039058A (zh) * 2018-11-16 2021-06-25 海拉有限双合股份公司 用于粘接两个彼此位置精确地设置的构件的方法
CN113039058B (zh) * 2018-11-16 2023-03-10 海拉有限双合股份公司 用于粘接两个彼此位置精确地设置的构件的方法

Also Published As

Publication number Publication date
JPH044665B2 (ja) 1992-01-29

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