JPS63200340A - 光情報記録媒体 - Google Patents

光情報記録媒体

Info

Publication number
JPS63200340A
JPS63200340A JP62031577A JP3157787A JPS63200340A JP S63200340 A JPS63200340 A JP S63200340A JP 62031577 A JP62031577 A JP 62031577A JP 3157787 A JP3157787 A JP 3157787A JP S63200340 A JPS63200340 A JP S63200340A
Authority
JP
Japan
Prior art keywords
general formula
adhesive
tables
information recording
optical information
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
JP62031577A
Other languages
English (en)
Inventor
Yutaka Ueda
裕 上田
Eiji Noda
英治 野田
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP62031577A priority Critical patent/JPS63200340A/ja
Priority to US07/155,292 priority patent/US4861637A/en
Publication of JPS63200340A publication Critical patent/JPS63200340A/ja
Pending legal-status Critical Current

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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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/256—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers improving adhesion between layers
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • G11B7/247—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/245—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing a polymeric component
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • G11B7/247—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes
    • G11B7/2472—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes cyanine
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • G11B7/247—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes
    • G11B7/2475—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes merocyanine
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • G11B7/248—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes porphines; azaporphines, e.g. phthalocyanines
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2532—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising metals
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2535—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polyesters, e.g. PET, PETG or PEN
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/146—Laser beam

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Macromonomer-Based Addition Polymer (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】 〔技術分野〕 本発明は封止型の光情報記録媒体に関する。
〔従来技術〕
ディスク状情報記録媒体の封正に用いられる接層剤には
、封入される記録材料に影響を及ぼすことがないように
（１）硬化の際に反応副生成物のないこと、（２）溶剤
を含まないことが要求される。そのため通常はエポキシ
系接層剤が用いられる。しかしながら、エポキシ系接着
剤上用いる場合、硬化の際の加熱によシブラスチック基
板が変形する、硬化に時間がかかる等の問題がある。ま
た常温硬化型のエポキシ系接着剤を用いることが提案さ
れているが硬化時間が長い点では同じである。
そこで、近年紫外機硬化型接着剤が注目されてきている
。これは上記（１）および（２）の性質を備えている丸
め有望なものであるが、硬化反応が２ジ力ル重合反応に
よるため大気中のｍ素がラジカルを消費してしまい表面
の硬化が遅いという欠点を有している。特に、いわゆる
エア・サンドイッチ型の封止ディスクにおいては、封止
内部の接着剤表面が硬化不足となシ未反応単量体成分が
封止内部に揮発し記録層に影響を及ぼす。その対策とし
て硬化雰囲気が画素を除去すること具体的には窒素雰囲
気中での硬化という方法が考えられるが、工業生産では
設備が大がかシになるという問題がある。
一方、接着部に記録層が存在する封止個情報記録媒体に
おいては、基板上に存在している記録材料と基板との密
着強度があまシ強力でないために、記録層／基板界面か
ら層剥離が生じてくる危険性が大きいことは良く知られ
ている。
また、最近になって記録材料として有機色素が種々開発
され、この中には溶剤塗布等によって極めて簡単に記録
層を形成することが可能なものがあシ、このことが有機
色素を用いることの大きな利点のひとつとなっている。
上記溶剤塗布法の中でもスピンコード法によれば最も精
密な成膜が可能であるが、このスピンフート法によシ記
録形成を行う場合には接着部に記録層を設けないように
するマスキングは困難であるという欠点がある。そこで
接着剤塗布前に接着部の記録層を除去すれば充分な接着
強度を確保できるのであるが、この場合は記録材料の除
去工程において発生するｍ埃のために製品記録体の欠陥
品が増大する、すなわちエラー率が高くなるという新た
な問題が伴う。
〔目的〕
本発明は上記問題に鑑みてなされたものであってその目
的は光情報記録媒体の封止信頼性の向上にある。
〔構成〕
本発明者は光情報記録媒体の封止用接着剤について種々
検討した結果、表面硬化性のすぐれた下記一般式（Ｉ）
の化合物と接着部の記録材料を溶解するが記録材料に対
する劣化の小さい下記一般式（ＩＩ）および一般式（Ｉ
ＩＩ）の化合物をそれぞれ見出し本発明をなすに至った
。
すなわち、本発明の上記目的は２枚のディスク状基板の
うち少なくとも１枚の片面に有機色素記録層を有する１
対の基板管同心的に配置された内周スペーサおよび外周
スペーサを介してまたは介さずに該記録層が内側になる
ように貼合せる際に封止用接着剤として下記一般式（Ｉ
）および一般式、（ＩＩ）ｔたけ一般式（Ｉｌｌ）の化
合物を含む接着剤を用いることによシ達成できる。
表面硬化性のすぐれた一般式（Ｉ）の化合物はを表わし
、Ｌ２は を表わし、ｍは０または１であシ、ｎは２〜４であｐ、
Ｒ１はメチル基またはエチル基を表わしモしてｋは１〜
４である）によって表わされる。
また、接着部の記録材料を溶解するが記録材料に対する
劣化の小さい一般式（ＩＩ）および一般式（ＩＩＩ）の
化合物は ハ２ ＣＨ２＜ＨＣＯＯ＆Ｈ２Ｖ　０ＣＯＣｘＨ２（ｍ）（式
中、職は水素またはメチル基であシ、ｌは６〜１５であ
シそしてＩ′は４〜６である）によって表わされる。
なお、本発明では上記一般式（りおよび（２）または（
ＩＩＩ）の化合物を含む封止用接着剤を用いることによ
って充分な接着強度を得ることができるが、さらに接着
強度を向上させる目的で一分子中にアクリロイル基（Ｃ
Ｈ２＝ＣＨＣＯＯ−）　　を１個有するアクリレートモ
ノマ・−いわゆる単官能上ツマ−を組み合せて用いても
よい。かかる単官能モノマーの例としては以下のものを
あげることができるがこれらのみに限定されない。
ＣＨ２”ＣＨＣＯＱＣＨ２ＣＨ２ＣＨ２ＣＨ２ＣＨ２Ｃ
Ｏｉ　０Ｈ（ｎは０または１〜２） ＣＨ２＝ＣＨＣＯＯＣＨ２ＣＨＯＨ 占Ｈ３ ＣＨ２−ＣＨＣ’０ＱＣＨ２ＣＨ２ＣＨ２ＣＨ２Ｃ！（
２Ｃ’０ｉＯＣＨ２つ（ｎは０または１〜２） ＣＨ２＝ＣＨＣＯｆＯＣＨ２ＣＨ２枦（ｈＨ２ニヤ１（
ｍは０または１〜３、ｎは０〜１２）ｃ　ａ２＝ｃＨｃ
ｏｏ−ｐｕ２ｃａ２ｏすｃ　２）Ｉ５（ｎは１または２
） ＣＨ２’ＣＨＣＯ（（）ＣＨ２ＣＨ２％ＱｃｎＨ２ｎ＋
１（ｍは２または３、ｎは１〜４） なお、単官能モノマーの選択に際してはその揮発性が低
いものを選択する必要がある。
本発明における封止用接着剤は望ましくは一般式（Ｉ）
の化合物　　４０〜７０重量％一般式（２）の化合物　
　１０〜４０重量％単官能モノ！−　　　０〜３０重量
％ を混合することによシ調製することができる。
次に本発明の封止型光情報記録媒体を図面にもとづいて
説明する。
ディスク状基板１，１は例えば透明プラスチック板から
形成されその中心部に嵌合孔２を有し、これら基板１，
１の一方の片面には有機色素記録層３が形成されている
。これら基板１，１ｔ−同心的に配置した内周スペーサ
４および外周スペーサ５を介して上記記録層３，３を互
いに内側に配置し且つ各々の記録層５，５の相互対向面
間に空間６が形成される状態に本発明の封止用接着剤７
を用いて貼合せる。
上記有機色素記録層３の代表例としてはシアニン色素、
メロシアニン色素などのポリメチン色素をあげることが
できるがこれのみに制限されるものではない。なお、図
示の構成の他に記録層３１ｆｒ、基板１，１０両方の片
面に形成させる場合もある。
〔効果〕
上述のようにして構成された本発明の光情報記録媒体は
従来のエポキシ系接着剤を用いて貼合せたものに比べて
基板変形が少なく保存性にすぐれている。また、貼合せ
の際の硬化時間を短縮することができる。
〔実施例〕
以下に比較例とともに実施例をあげて本発明ｔさらに説
明するがこれに限定されるものではない。例中、部は重
量部によって示す。なお、例中で示した一般式において
アクリロイル基ＣＨ２＝ＣＨＣ０−をＡと略記した。
Ｉ 実施例　１ 直径２００ｍ１ｌおよび厚さ１簡のポリメチルメタクリ
レート基板２枚を用い、そのうちの１枚に７オトボリマ
法によシブレグルーフを設は死後その上に一般式 で表わされる色素の１，２−ジクロロエタン溶液（色素
濃度０．７重ｆ１％）を６０　Ｏｒｐｍでスピンコート
シて記録層を設けた後、厚さ１１Ｉ＋ＩＢのスペーサを
介して下記の組成を有する接着剤を用いて図示のように
封止した。
ＡＱＨ２ＣＨ２０ｅｙＣＨ２ＣＨ２−Ａ　　　　　　　
２５部Ａ　−ＣＨ２ＣＨ２ＣＨ２ＣＨ２ＣＨ２ＣＯＯＣ
Ｈ２ダ　１５部２．２−ジメトキシ２−フェニルアセト
フェノン　１部（光重合開始剤） 本発明の接着剤は紫外線硬化型であって光源には高圧水
銀灯（ウシオ電機（株）２ピツドキエア２０００）’ｉ
用い照度的３　Ｑ　ｍＷ／ｃｍ”の条件で露光時間３０
秒によシ硬化した。
上述のようにして作製した封止ディスクラ６０℃、９０
％Ｒ，Ｈ，の環境中に１０００時間放置後ディスク特性
を測定した結果を以下の表に示す。
実施例２〜９および比較例１〜２ 実施例１における接着剤の代シに以下に示す組成の接着
剤を用いた以外には実施例１とまったく同様にして光デ
ィスクを作製した。なお、各実施例および各比較例にお
いて光重合開始剤として実施例１と同様に２，２−ジメ
トキシ２−フェニルアセトフェノンを用いた。各光ディ
スクについて特性を測定した結果を以下の表に示すＯ 実施例　２ Ａ（−Ｃ）！２ＣＨ２０←ＣＨ２ＣＨ２−Ａ　　　　　
　　２０部Ａ−ＣＨ２ＣＨ２０（目とＣ９Ｈ１９２０部
実施例　３ Ａ刊Ｈ２ＣＨ２０（ＣＨ２Ｃ）１２−Ａ　　　　　　　
３０部実施例　４ 実施例　５　　　。
Ａ−＠Ｈ２ＣＨ２Ｏ＋−ＣＨｚＣＨｚ−Ａ　　　　　　
　２０部Ａ（−ｃＨ２ｃＨ２０＋−ｃＨ５３０部実施例
　６ Ａ（−ＣＨ２ＣＨ２０←ＣＨ２ＣＨ２−Ａ　　　　　　
　３５部実施例　７ Ａ−ＣＨ２ＣＨ２０ＣＯＣＨ２ＣＨ２ＣＨ２ＣＨ２ＣＨ
２ＯＦ！　　２０部実施例　８ ＭにＨ２ＣＨ２Ｏ「ＣＨ２ＣＨ２−Ａ　　　　　　　３
０部実施例　９ Ａ七Ｈ２←Ａ　　　　　　　　　　　　　２０部Ａ−Ｃ
ＨｚＣＨ２０ＣＯＣＨｚＣＨｚＣＨ２ＣＨｚＣＨ２０Ｈ
２０部比較例　１ Ａ−ＣＨ２ＣＨ２０Ｇ　Ｃｔ　Ｈｌ　９　　　　　　２
０　部比較例　２ （Ａ−ＣＨ２）ＣＣＨ２０Ｈ３０部
【図面の簡単な説明】
図は本発明による光情報記録媒体の構成の１例を示す断
面図である。 １・・・基板、２・・・嵌合孔、３・・・記録層、４・
・・内周スペーサ、５・・・外周スペーサ、６・・・空
間、７・・・接着剤。 特許出願人　株式会社　リ　　　コ　　　−外２名

Claims (1)

  1. 【特許請求の範囲】 ２枚のディスク状基板のうち少なくとも１枚の片面に有
    機色素記録層を有する１対の基板を同心的に配置された
    内周スペーサおよび外周スペーサを介してまたは介さず
    に該記録層が内側になるように接着剤を用いて貼合せた
    封止構造を有ししかも前記接着剤が下記一般式（ I ）
    および一般式（II）または一般式（III）の化合物を含
    むことを特徴とする光情報記録媒体。 一般式（ I ） ▲数式、化学式、表等があります▼（ I ） 一般式（II） ▲数式、化学式、表等があります▼（II） 一般式（III） ▲数式、化学式、表等があります▼（III） ただし、Ｌ＿１は ▲数式、化学式、表等があります▼ を表わし、Ｌ＿２は ▲数式、化学式、表等があります▼ を表わし、ｍは０または１であり、ｎは２〜４であり、
    Ｒ＿１はメチル基またはエチル基を表わし、には１〜４
    であり、Ｒ＿２は水素またはメチル基であり、ｌは３〜
    １５でありそしてｌ′は４〜６である。
JP62031577A 1987-02-16 1987-02-16 光情報記録媒体 Pending JPS63200340A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62031577A JPS63200340A (ja) 1987-02-16 1987-02-16 光情報記録媒体
US07/155,292 US4861637A (en) 1987-02-16 1988-02-12 Optical information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62031577A JPS63200340A (ja) 1987-02-16 1987-02-16 光情報記録媒体

Publications (1)

Publication Number Publication Date
JPS63200340A true JPS63200340A (ja) 1988-08-18

Family

ID=12335037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62031577A Pending JPS63200340A (ja) 1987-02-16 1987-02-16 光情報記録媒体

Country Status (2)

Country Link
US (1) US4861637A (ja)
JP (1) JPS63200340A (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053288A (en) * 1987-11-20 1991-10-01 Teijin Limited Optical recording medium
JP2815659B2 (ja) * 1990-03-06 1998-10-27 株式会社リコー 光記録媒体
US5968708A (en) * 1994-04-20 1999-10-19 Ricoh Company, Ltd. Optical recording medium and method of producing the same
SG72852A1 (en) * 1997-08-15 2000-05-23 Ricoh Kk Optical recording medium and recording and reproducing method using the same
US6506814B2 (en) 1997-10-30 2003-01-14 Dsm N.V. Dielectric, radiation-curable coating compositions
US6472451B2 (en) 1998-03-27 2002-10-29 Dsm N.V. Radiation curable adhesive for digital versatile disc
CN1410972A (zh) * 2001-09-25 2003-04-16 株式会社理光 光信息记录媒体，信息消去方法，信息记录方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141661A (ja) * 1985-12-16 1987-06-25 Ricoh Co Ltd 光情報記録媒体
JPH111638A (ja) * 1997-06-11 1999-01-06 Taiyo Seiko Kk 亜鉛−アルミニウム合金めっき鋼板用塗料組成物及び塗装鋼板

Also Published As

Publication number Publication date
US4861637A (en) 1989-08-29

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