JPS63135292A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPS63135292A
JPS63135292A JP61283398A JP28339886A JPS63135292A JP S63135292 A JPS63135292 A JP S63135292A JP 61283398 A JP61283398 A JP 61283398A JP 28339886 A JP28339886 A JP 28339886A JP S63135292 A JPS63135292 A JP S63135292A
Authority
JP
Japan
Prior art keywords
layer
optical recording
light
transparent sheet
recording
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
JP61283398A
Other languages
Japanese (ja)
Inventor
Hitoshi Fujii
藤井　均
Atsushi Takano
高野　敦
Masayuki Iijima
飯嶋　正行
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP61283398A priority Critical patent/JPS63135292A/en
Priority to PCT/JP1987/000702 priority patent/WO1988003310A1/en
Priority to DE3751348T priority patent/DE3751348T2/en
Priority to AU80291/87A priority patent/AU612602B2/en
Priority to US07/892,471 priority patent/US5297132A/en
Priority to EP87906215A priority patent/EP0288570B1/en
Publication of JPS63135292A publication Critical patent/JPS63135292A/en
Pending 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
    • 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
    • G11B7/243—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 inorganic materials only, e.g. ablative 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
    • G11B7/252—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
    • G11B7/257—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 having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B7/2572—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 having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of organic materials
    • G11B7/2575—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 having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of organic materials 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
    • 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
    • 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
    • G11B7/254—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 protective topcoat 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
    • G11B7/252—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
    • G11B7/252—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
    • G11B7/258—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 reflective layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To impart recording characteristics stable with time to enable high- sensitivity recording/regeneration, by a method wherein an optical recording material having no void and consisting of a light reflecting layer and a sensitizing layer is cut off from outside air by a transparent sheet. CONSTITUTION:On a substrate 1, an adhesive layer 2, a sensitizing layer 3, a light reflecting layer 4, a transparent sheet 7, and a surface protective layer 8 are laminated in this order. The sensitizing layer 3 is so provided as to be in close contact with the light reflecting layer 4, and an irradiating light beam fuses the light reflecting layer 4 made of a high-light reflectance metal film to form a recording portion. The use of a thermoplastic resin as a material of the sensitizing layer causes remarkable effects on the enhancement of recording sensitivity and the stability with time. On the other hand, the addition of a light absorber to the sensitizing layer accelerates the effects. The transparent sheet 7 molded integrally with a tracking guide groove 9 protects an optical recording material consisting of the light reflecting layer and the sensitizing layer by cutting it off from outside air. The surface protective layer 8 enhances the sensitivity in recording/regeneration on the action of preventing a laser beam from reflecting in recording/regeneration.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、レーザービーム等の照射により光記録材料に
ビットを形成して光学的情報を記録し、また光学的な情
報再生が可能な光記録媒体に関する。Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to an optical recording medium in which optical information is recorded by forming bits on an optical recording material by irradiation with a laser beam or the like, and in which optical information can be reproduced. Regarding the medium.

〔発明の背景〕[Background of the invention]

従来、高密度光学記録方法としては、レーザ光などの高
度に収束された記録光により、金属、半金属または、を
機化合物を融解または蒸発させて凹部あるいは孔部を形
成する方法と、結晶と非結晶などの二つの熱力学的準安
定状態間での転移により識別ピットを形成する方法との
三方法か知られている。Conventionally, high-density optical recording methods include methods in which concavities or holes are formed by melting or vaporizing metals, semimetals, or organic compounds using highly focused recording light such as laser light; Three methods are known: a method of forming discriminative pits by transition between two thermodynamically metastable states such as amorphous.

これらの光学的記録方法は、一般に剛体状のガラス円板
、または、プラスチック円板上に光学記録材料と光ビー
ム追従用のトラッキングパターンを設けるものであり、
この方法によって記録された媒体は、光記録ディスク状
媒体として一般に知られている。この様な光記録ディス
ク状媒体は、寸法精度か高く、機械的強度が高いなどの
利点を有する反面、重量および厚みが大きくなるなどの
理由から、駆動装置が大型化し、また、媒体も装置も高
価であるという問題点を有している。このため、いまだ
、広く一般に普及するに至っていない。高密度記録可能
な光学的記録媒体が広く一般に普及するためには、従来
の光学記録ディスク状媒体に加えて光学記録フレキシブ
ルディスク状媒体、光学記録カード状媒体、光学記録テ
ープ状媒体、光学記録シート状媒体など、軽量、コンパ
クト、安価な光学記録媒体の出現が待たれている。These optical recording methods generally provide an optical recording material and a tracking pattern for following a light beam on a rigid glass disk or plastic disk.
A medium recorded by this method is generally known as an optical recording disk-like medium. Although such optical recording disk-shaped media have advantages such as high dimensional accuracy and high mechanical strength, they are heavier and thicker, resulting in larger drive devices and problems with both the media and the equipment. It has the problem of being expensive. For this reason, it has not yet become widely popular. In order for optical recording media capable of high-density recording to become widely popular, in addition to conventional optical recording disk-shaped media, optical recording flexible disk-shaped media, optical recording card-shaped media, optical recording tape-shaped media, optical recording sheets, etc. The emergence of lightweight, compact, and inexpensive optical recording media, such as optical recording media, is awaited.

上述の２つの高密度光学記録方法のうち、第１の方法は
記録時に四部あるいは孔部を形成しなくてはならない。Of the two high-density optical recording methods mentioned above, the first method requires the formation of four sections or holes during recording.

このためには物質を融解または蒸発によって取去らねば
ならず、記録時の物質移動が大きくなる。従って、記録
感度を充分大きくする為には、光学記録材料を空気に露
出させることにより物質移動を起こり易くすることがよ
く行なわれている。しかしこの場合は、光学記録材料が
空気中の水分などの影響で強化したりして劣化を生じた
り、光学記録材料に異物などがぶつかり、光学記録材料
が機械的に破壊されたりする事故が起こる危険性がある
。そのため、光記録材料を空隙をはさんで密閉する構造
をとっている。しかしなから、このような媒体構造では
、重量および厚みも増し、フレキシブルディスク、カー
ド、テープ、ンートなどの多様な形状を持たせることが
困難である。For this purpose, the material must be removed by melting or evaporation, which increases mass transfer during recording. Therefore, in order to sufficiently increase the recording sensitivity, it is common practice to expose the optical recording material to air to facilitate mass transfer. However, in this case, accidents may occur where the optical recording material becomes stronger due to the influence of moisture in the air, causing deterioration, or when foreign objects collide with the optical recording material, resulting in mechanical destruction of the optical recording material. There is a risk. Therefore, a structure is used in which the optical recording material is sealed with a gap in between. However, such a media structure also increases weight and thickness, making it difficult to provide various shapes such as flexible disks, cards, tapes, and cartons.

一方、第２の方法、即ち熱力学的準安定状態間での転移
を利用する方法の場合、記録時の物質移動が小さいため
光記録材料を空気に露出させる必要はなく空隙を設けず
に密閉することが可能である。従ってこの様な転移によ
る記録方法によれば、多様な媒体形状に対応可能である
。従来、このような転移に用いる材料としては、ＴｅＯ
。On the other hand, in the case of the second method, which utilizes transition between thermodynamic metastable states, the mass transfer during recording is small, so there is no need to expose the optical recording material to air, and the material is sealed without creating any voids. It is possible to do so. Therefore, this type of recording method using transfer can be applied to a variety of media shapes. Conventionally, materials used for such transitions include TeO
.

ＧｅＳｅなどの結晶−非結晶相転移材料が知られている
。しかしながら、これら従来の相転移材料は、経時的に
不安定化する傾向があり、また結晶−非結晶間での光学
特性変化量が前記孔部形成に比べて小さいため記録再生
精度の点で必すしも満足のいくものではない。Crystalline-amorphous phase change materials such as GeSe are known. However, these conventional phase change materials tend to become unstable over time, and the amount of change in optical properties between crystal and amorphous is smaller than that in hole formation, which is necessary for recording and reproducing accuracy. Sushi is also not satisfying.

〔発明の概要〕[Summary of the invention]

本発明は上述した従来技術に伴う問題点に鑑みてなされ
たものであり、以下の点を目的とするものである。The present invention has been made in view of the problems associated with the above-mentioned prior art, and has the following objectives.

（イ）　経時的に安定な記録特性ををする光記録媒体を
提供すること。(b) To provide an optical recording medium that exhibits stable recording characteristics over time.

（ロ）　高感度の記録再生が可能であり、光記録材料層
を外気に露出させたりあるいは、材料層中に空隙を設け
る必要がない（密閉型）光記録媒体を提供すること。(b) To provide a (sealed type) optical recording medium that is capable of recording and reproducing with high sensitivity and that does not require exposing the optical recording material layer to the outside air or providing voids in the material layer.

（ハ）　フレキシブルディスク、カード、テープ、シー
ト等様々な形態の媒体に適用することができる光記録媒
体を提供すること。(c) To provide an optical recording medium that can be applied to various forms of media such as flexible disks, cards, tapes, and sheets.

上記のような目的を達成するため、本発明に係る光記録
媒体は、支持体上に、接着剤層を介して、光反射層と増
感層からなる光記録材料ならびに透明シートがこの順序
で積層されてなる光記録媒体であって、前記増感層が熱
可塑性樹脂からなり、前記光記録材料は実質的に空隙を
有さず、がっ、前記光反射層は外気から遮断されるよう
に形成されていることを特徴としている。In order to achieve the above object, the optical recording medium according to the present invention comprises an optical recording material consisting of a light reflecting layer and a sensitizing layer and a transparent sheet placed on a support via an adhesive layer in this order. An optical recording medium formed by laminating layers, wherein the sensitizing layer is made of a thermoplastic resin, the optical recording material has substantially no voids, and the light reflecting layer is shielded from the outside air. It is characterized by being formed.

〔発明の詳細な説明〕[Detailed description of the invention]

以下、本発明の光記録媒体を、図面を参照しながら詳細
に説明する。Hereinafter, the optical recording medium of the present invention will be explained in detail with reference to the drawings.

第１図は本発明の光記録媒体の好ましい一態様を示すも
のであり、下方から上方に向かって、順に、支持体１、
接着剤層２、増感層３、光反射層４、トラッキング用案
内溝形成層（単に、トラッキング層という場合もある）
５、ブライマ一層６、透明シート７、および表面保護層
８が積層された構造となっている。FIG. 1 shows a preferred embodiment of the optical recording medium of the present invention, in which support 1,
Adhesive layer 2, sensitizing layer 3, light reflecting layer 4, tracking guide groove forming layer (sometimes simply referred to as tracking layer)
5. It has a structure in which a single layer of brimmer 6, a transparent sheet 7, and a surface protection layer 8 are laminated.

支持体１は、光記録媒体を支えるものであり、必要に応
じて他の記録手段が施されていることもある。支持体１
としては、公知の材料か適宜用いられ、用途に合わせて
、強度、可撓性の程度を決めて材料を選択することがで
きる。プラスチックとしては、アクリル樹脂、ポリ塩化
ビニル樹脂、もしくはポリスチレン樹脂、ポリカーボネ
ート樹脂等が好ましくは使用され得るが、この他にガラ
スも使用できる。またこれらの材料は、用途に応じて適
当な添加剤を予め添加したものであってもよい。The support 1 supports an optical recording medium, and may be provided with other recording means as necessary. Support 1
Any known material can be used as appropriate, and the material can be selected depending on the strength and flexibility depending on the purpose. As the plastic, acrylic resin, polyvinyl chloride resin, polystyrene resin, polycarbonate resin, etc. can be preferably used, but glass can also be used. Moreover, these materials may be added with appropriate additives in advance depending on the purpose.

また、折り曲げに対する抵抗性が要求されれば、金属板
や金属網、織布や不織布を用いて補強するようなことを
行なってもよい。Further, if resistance to bending is required, reinforcement may be performed using a metal plate, metal net, woven fabric, or non-woven fabric.

更に、支持体１には光記録層以外の記録手段を設けてお
いてもよい。例えば、磁気ストライブ、ホログラム、イ
ンプリント（エンボスのこと）、顔写真、彫刻、サイン
、ＩＣチップ、バーコード、一般の印刷がある。Furthermore, the support 1 may be provided with recording means other than the optical recording layer. Examples include magnetic stripes, holograms, imprints (emboss), facial photographs, engravings, signatures, IC chips, barcodes, and general printing.

接着剤層２は、支持体１と上層の増感層３とを接着する
ものであって、接着剤は接着面の上下の材質を考慮して
選択される。具体的には、ポリウレタン、ポリエステル
、エポキシ、ポリアクリル酸エステル等が好ましく用い
られ、接着剤層の厚みは１０〜１００μｍ程度である。The adhesive layer 2 is for bonding the support 1 and the upper sensitized layer 3, and the adhesive is selected in consideration of the materials on the upper and lower surfaces of the adhesive surface. Specifically, polyurethane, polyester, epoxy, polyacrylic acid ester, etc. are preferably used, and the thickness of the adhesive layer is about 10 to 100 μm.

接着剤としては、硬化の際の熱で支持体１が変形しない
ようなものを選ぶのがよく、この意味では、穏和な条件
で硬化可能なポリウレタンやエポキシが優れている。接
着剤層２の材質は、また、光反射層に光情報を記録する
際の感度に影響を与える。光情報を記録する際には、光
反射層が融解するか、あるいは蒸発して膨張するので、
増感層３を介してその影響が接着剤層に及ぶ。接着剤層
は影響を受けたとき、弾性が高く、かつ、容易に変形す
るものであることが望ましい。この意味で優れている接
着剤はポリウレタン接着剤である。It is preferable to select an adhesive that will not deform the support 1 due to heat during curing, and in this sense, polyurethane and epoxy, which can be cured under mild conditions, are excellent. The material of the adhesive layer 2 also affects the sensitivity when recording optical information on the light reflective layer. When recording optical information, the light reflective layer melts or evaporates and expands.
Its influence extends to the adhesive layer via the sensitized layer 3. Desirably, the adhesive layer is highly elastic and easily deforms when subjected to an impact. Adhesives that are superior in this sense are polyurethane adhesives.

増感層３は、光反射層４に密接して設けられ、光反射層
４の記録時の感度を向上させるものである。The sensitizing layer 3 is provided closely to the light reflecting layer 4 and improves the sensitivity of the light reflecting layer 4 during recording.

光記録媒体に記録する場合、照射された光ビームが記録
層（光反射層４）に吸収されて光反射層が融解し、これ
によって記録部（無反射部）か形成されるが、この場合
、光反射層を融解するのみでは記録部を均一でしかも望
ましいピント形状にすることは困難である。When recording on an optical recording medium, the irradiated light beam is absorbed by the recording layer (light-reflecting layer 4) and the light-reflecting layer melts, thereby forming a recording area (non-reflecting area). However, it is difficult to make the recording portion uniform and in a desired focused shape by simply melting the light reflecting layer.

本発明においては、増感層の材料として熱可塑性樹脂を
用いることによって、記録感度の向−Ｌと経時的安定性
にすぐれた効果が発現する。このような効果が発現する
理由は必ずしも明らかではないが、光反射層に照射され
た光によって発生した熱により増感層としての熱可塑性
樹脂が軟化して、融解ないし蒸発した光反射層材料を迅
速かつ効果的に吸収（拡散）し、しかもこれが増感層の
熱変形を伴うため、この熱変形が相乗的にピット形状の
均一化および易成形性に寄与するためであると考えられ
る。In the present invention, by using a thermoplastic resin as the material for the sensitizing layer, excellent effects are achieved in terms of recording sensitivity and stability over time. The reason why such an effect occurs is not necessarily clear, but the thermoplastic resin as a sensitizing layer is softened by the heat generated by the light irradiated on the light reflection layer, and the material of the light reflection layer that has melted or evaporated is softened. This is thought to be because it is rapidly and effectively absorbed (diffused) and is accompanied by thermal deformation of the sensitized layer, and this thermal deformation synergistically contributes to uniformity of pit shape and easy moldability.

このような効果を発現させるための材料としては、各種
の熱可塑性樹脂が使用可能であり、具体的には、塩化ビ
ニル、酢酸ビニル、塩化ビニリデンの単独もしくは共重
合体のビニル樹脂、ポリエチレン、ポリプロピレン、ポ
リブテンなどの石油系樹脂、ホルマール、ブチラールな
どのアセタール樹脂、アクリル、メタクリル、ポリアク
リロニトリルなどのアクリル樹脂、ポリスチロール、Ａ
ＢＳ、ＡＳ、などのスチロール樹脂、ポリアミド樹脂な
どが挙げられる。Various thermoplastic resins can be used as materials to produce such effects, and specifically, vinyl resins such as vinyl chloride, vinyl acetate, vinylidene chloride alone or copolymers, polyethylene, polypropylene, etc. , petroleum resins such as polybutene, acetal resins such as formal and butyral, acrylic resins such as acrylic, methacryl, and polyacrylonitrile, polystyrene, A
Examples include styrene resins such as BS and AS, and polyamide resins.

また、本発明においては、増感層に光吸収剤を添加する
ことによって、上記効果の一層の促進を図ることができ
る。Furthermore, in the present invention, the above effects can be further promoted by adding a light absorber to the sensitized layer.

熱可塑性樹脂に添加する光吸収剤としては、一般的に用
いられる染料、顔料、及び金属粉末か使用できる。具体
的には、ポリメチン系色素、ピリリウム系、チオピリリ
ウム系、スクワリリウム系、クロコニウム系、フタロン
アニン系、ジチオール金属錯塩系、ナフトキノン、アン
トラキノン系、トリフェニルメタン系、アミニウム、ジ
インモニウム系、メルカプトナフトール金属錯塩系染料
、あるいはＴｅ、Ｂ１５ＳｅＳＧｅ、Ｚｎ等の金属粉末
が好ましく用いられる。As the light absorbing agent added to the thermoplastic resin, commonly used dyes, pigments, and metal powders can be used. Specifically, polymethine dyes, pyrylium dyes, thiopyrylium dyes, squalirium dyes, croconium dyes, phthalonanine dyes, dithiol metal complex salt dyes, naphthoquinone dyes, anthraquinone dyes, triphenylmethane dyes, aminium dyes, diimmonium dyes, and mercaptonaphthol metal complex dyes. Alternatively, metal powders such as Te, B15SeSGe, Zn, etc. are preferably used.

光反射層４は、光反射率の高い金属の薄膜から形成する
ことがでる。金属としては、クロム、チタン、鉄、コバ
ルト、ニッケル、銅、銀、金、ゲルマニウム、アルミニ
ウム、マグネシウム、アンチモン、テルル、鉛、パラジ
ウム、カドミウム、ビスマス、錫、セレン、インジウム
、ガリウム、もしくはゲルマニウム等を挙げることがで
き、これらの金属は単独、もしくは、２種以上組み合わ
せた合金として使用できる。これら金属もしくは合金の
薄膜からなる光反射層の厚みは、１００〜１０００Ａで
あり、より好ましくは２００〜５００人である。The light reflecting layer 4 can be formed from a metal thin film with high light reflectance. Examples of metals include chromium, titanium, iron, cobalt, nickel, copper, silver, gold, germanium, aluminum, magnesium, antimony, tellurium, lead, palladium, cadmium, bismuth, tin, selenium, indium, gallium, or germanium. These metals can be used alone or as an alloy in combination of two or more. The thickness of the light reflecting layer made of a thin film of these metals or alloys is 100 to 1000 A, more preferably 200 to 500 A.

金属もしくは合金の薄膜以外であっても、■シアニンな
どの色素を凝集させて光反射性を与えた薄膜、■ニトロ
セルロース樹脂、ポリスチレン樹脂、もしくはポリエチ
レン樹脂などの樹脂中に金属もしくは金属粒子を分散さ
せたものか、もしくは、■樹脂表面に色素もしくは金属
粒子を凝集させたもの、なども光反射層として用いるこ
とができる。Even if it is not a thin film of metal or alloy, there are two types of films: - A thin film made of agglomerated pigments such as cyanine to give light reflectivity, and - Metal or metal particles dispersed in a resin such as nitrocellulose resin, polystyrene resin, or polyethylene resin. Alternatively, (2) pigment or metal particles aggregated on the resin surface can also be used as the light-reflecting layer.

トラッキング層５は、光反射層への記録・再生の際に光
情報の位置を規制するために設けられるものであり、光
反射層４を保護するためには耐湿性、耐候性を有するも
のが好ましく、感度を向上させる上では断熱性を有する
材料が好ましい。さらに、トラッキング用の案内溝を形
成する上では、必要な賦型性を有していることが好まし
い。これろの点を満足するものとしては、硬化型樹脂、
特に硬化時の熱の影響を回避し得るものとして、電離放
射線硬化型樹脂が望ましい。The tracking layer 5 is provided to regulate the position of optical information when recording/reproducing on the light reflection layer, and in order to protect the light reflection layer 4, it must be moisture resistant and weather resistant. Preferably, a material having heat insulating properties is preferred in order to improve sensitivity. Furthermore, in forming a tracking guide groove, it is preferable that the material has the necessary formability. Examples of materials that satisfy these points include hardening resins,
In particular, ionizing radiation-curable resins are desirable as they can avoid the effects of heat during curing.

具体的には、下記のような分子中にエチレン性飽和結合
を有するプレポリマーもしくはオリゴマー、およびモノ
マーに必要により公知の増感剤を添加して塗工し、紫外
線、電子線、もしくはγ線などの電離放射線を照射する
ことにより硬化させて保護、増感層を兼ねたトラッキン
グ層とすることができる。Specifically, a prepolymer or oligomer having an ethylenic saturated bond in the molecule as shown below, and a monomer are coated with a known sensitizer if necessary, and irradiated with ultraviolet rays, electron beams, or gamma rays. It can be cured by irradiation with ionizing radiation to form a tracking layer that also serves as a protective and sensitizing layer.

１）分子中にエチレン性不飽和結合を有するプレポリマ
ーもしくはオリゴマー、およびモノマーとして、ポリエ
ステル（メタ）アクリレート、エポキシ（メタ）アクリ
レート、ウレタン（メタ）アクリレート、ポリエーテル
（メタ）アクリレート、ポリオール（メタ）アクリレー
ト、メラミン（メタ）アクリレート、 ２）分子中にエチレン性不飽和結合を有するモノマーと
して、（メタ）アクリル酸メチル、（メタ）アクリル酸
エチル、（メタ）アクリル酸プロピル、（メタ）アクリ
ル酸ブチル、（メタ）アクリル酸２−エチルへキシル、
（メタ）アクリル酸メトキシエチル、（メタ）アクリル
酸エトキシメチル、（メタ）アクリル酸メトキシブチル
、（メタ）アクリル酸ブトキシエチル、（メタ）アクリ
ル酸ラウリル、（メタ）アクリル酸フェニル、などの（
メタ）アクリル酸エステル類、（メタ）アクリル酸アミ
ドなどの不飽和カルボン酸アミド、（メタ）アクリル酸
２−（Ｎ、Ｎ−ジメチルアミノ）エチル、（メタ）アク
リル酸２−（Ｎ、Ｎ−ジメチルアミノ）メチル、（メタ
）アクリル酸２−　　（Ｎ、Ｎ−ジエチルアミノ）プロ
ピルなどの不飽和カルボン酸の置換アミノアルコールエ
ステル類、この他、エチレングリコールジ（メタ）アク
リレート、プロビレングリコールジ（メタ）アクリレー
ト、ネオベンチルグリコールジ（メタ）アクリレート、
１，６−ヘキサンジオールジアクリレート、ジエチレン
グリコールジ（メタ）アクリレート、トリエチレングリ
コールジ（メタ）アクリレート、ジプロピレングリコー
ルジ（メタ）アクリレート、トリメチロールプロパント
リ　（メタ）アクリレートなど。1) Prepolymers or oligomers having ethylenically unsaturated bonds in the molecule, and monomers such as polyester (meth)acrylate, epoxy (meth)acrylate, urethane (meth)acrylate, polyether (meth)acrylate, and polyol (meth) Acrylate, melamine (meth)acrylate, 2) As a monomer having an ethylenically unsaturated bond in the molecule, methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate , 2-ethylhexyl (meth)acrylate,
Methoxyethyl (meth)acrylate, ethoxymethyl (meth)acrylate, methoxybutyl (meth)acrylate, butoxyethyl (meth)acrylate, lauryl (meth)acrylate, phenyl (meth)acrylate, etc.
Meth)acrylic acid esters, unsaturated carboxylic acid amides such as (meth)acrylic acid amide, (meth)acrylic acid 2-(N,N-dimethylamino)ethyl, (meth)acrylic acid 2-(N,N- Substituted amino alcohol esters of unsaturated carboxylic acids such as dimethylamino)methyl and 2-(N,N-diethylamino)propyl (meth)acrylate, as well as ethylene glycol di(meth)acrylate and propylene glycol di(meth)acrylate. ) acrylate, neobentyl glycol di(meth)acrylate,
1,6-hexanediol diacrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, etc.

このような保護、増感層を兼ねたトラッキング層に用い
る不飽和結合を有するプレポリマーもしくはオリゴマー
、およびモノマーに適した増感剤としては、具体的には
、ベンゾフェノン系、ベンゾインエーテル系のものが挙
げられる。Specifically, benzophenone-based and benzoin ether-based sensitizers are suitable for prepolymers or oligomers and monomers having unsaturated bonds used in the tracking layer that also serves as a protective and sensitizing layer. Can be mentioned.

トラッキング層５の厚みは３〜２０μｍでありより好ま
しくは５〜７μｍである。The thickness of the tracking layer 5 is 3 to 20 μm, more preferably 5 to 7 μm.

ブライマ一層６は光記録材料、直接的にはトラッキング
層５と上層の透明シート７との接着強度を向上させる意
味で設けられるが、トラッキング層５と上層の透明シー
ト７との接着強度が十分得られる場合にはなくてもよい
。ブライマ一層６を構成する材料としては、塩化ビニル
、もしくは酢酸ビニル樹脂の重合体またはこれらの共重
合体を挙げることができる。The single layer of brimmer 6 is provided to improve the adhesive strength between the optical recording material, directly the tracking layer 5, and the upper transparent sheet 7, but it is necessary to obtain sufficient adhesive strength between the tracking layer 5 and the upper transparent sheet 7. It is not necessary if the Examples of the material constituting the brimer layer 6 include polymers of vinyl chloride or vinyl acetate resin, or copolymers thereof.

透明シート７は光記録材料を保護し、後で述べるように
、光記録材料を製造する際の基材としての役目を果たす
ものである。透明シート７側からは、レーザ光を照射し
て光情報を記録もしくは再生するので、レーザ光、特に
、小型で出力の高い半導体レーザのレーザ光の波長に対
し、十分な透過性を有しているものが、透明シート７と
して適している。具体的には、ポリエチレン樹脂、アク
リル樹脂、ポリカーボネート樹脂、ポリスチレンとポリ
カーボネートとの共重合体もしくは混合物、または、ポ
リエチレンテレフタレート樹脂などの透明樹脂のフィル
ム、もしくは、ガラスであり、厚みとしては１００μｍ
〜１ｍｍである。The transparent sheet 7 protects the optical recording material and, as will be described later, serves as a base material when manufacturing the optical recording material. Since optical information is recorded or reproduced by irradiating laser light from the side of the transparent sheet 7, it has sufficient transparency for the laser light, especially the wavelength of the laser light from a small and high output semiconductor laser. The transparent sheet 7 is suitable for use as the transparent sheet 7. Specifically, it is a polyethylene resin, an acrylic resin, a polycarbonate resin, a copolymer or mixture of polystyrene and polycarbonate, a transparent resin film such as a polyethylene terephthalate resin, or glass, and the thickness is 100 μm.
~1 mm.

表面保：ｊｋ層８は透明シート７の上層に設けられ、透
明シート７よりも硬度が高く、また、透明シート７より
も光の屈折率が低いものであることが望ましく、このよ
うに選択することにより、記録・再生の際のレーザ光の
反射を防止する作用により記録・再生の際の感度を高め
ることができる。Surface preservation: The jk layer 8 is provided on the top layer of the transparent sheet 7, and it is desirable that it has higher hardness than the transparent sheet 7 and has a lower light refractive index than the transparent sheet 7, and is selected in this way. Thereby, the sensitivity during recording and reproduction can be increased by the effect of preventing reflection of laser light during recording and reproduction.

表面保護層８の材質としては、表面硬化方法として知ら
れている方法で使用される物質が用いられ、例えば、シ
リコーン系、アクリル系、メラミン系、ポリスチレン基
、エポキシ系などの樹脂が硬化した硬化樹脂、ＳｉＯ２
などの金属酸化物が具体的に挙げられる。As the material of the surface protective layer 8, a material used in a method known as a surface curing method is used, such as a hardened resin such as silicone, acrylic, melamine, polystyrene, or epoxy. Resin, SiO2
Specific examples include metal oxides such as.

第２図に示す例は、本発明の他の好ましい実施態様であ
り、この場合は、支持体１上に、接着剤層２、増感層３
、光反射層４、透明シート層７および表面保護層８がこ
の順序で積層されたものである。The example shown in FIG. 2 is another preferred embodiment of the invention, in which on the support 1, an adhesive layer 2, a sensitized layer 3,
, a light reflecting layer 4, a transparent sheet layer 7, and a surface protection layer 8 are laminated in this order.

この例においては、透明シートを形成する際に、トラキ
ング用案内溝９を一体化して成型することができ、より
単純化された媒体構成が得られる。In this example, when forming the transparent sheet, the tracking guide grooves 9 can be integrally molded, resulting in a more simplified medium configuration.

また、この場合、透明シートの製法としては、アクリル
、ポリカーボネートなどの樹脂を用いた射出成型、プレ
ス成型法を採用することができる。Moreover, in this case, as a manufacturing method of the transparent sheet, injection molding or press molding using resin such as acrylic or polycarbonate can be adopted.

次に、本発明の密接着型光記録媒体の製造方法について
説明する。Next, a method for manufacturing a close-contact type optical recording medium of the present invention will be explained.

まず、透明シート７を準備し、透明シートの一方の片面
に硬化性樹脂の塗工液を公知の方法により塗布して乾燥
および硬化させるか、金属酸化物をスパッタ方法により
薄膜として形成するか、プラズマ重合方法により、表面
保護層８を形成する。First, a transparent sheet 7 is prepared, and a curable resin coating liquid is applied to one side of the transparent sheet by a known method, dried and cured, or a metal oxide is formed as a thin film by a sputtering method. A surface protective layer 8 is formed by a plasma polymerization method.

次に、表面保護層８が形成された透明シート７の表面保
護層８のない方の面に、ブライマー〇材料の塗工液を塗
布し、乾燥させてプライマ一層６を形成する。前に説明
したようにプライマ一層６は省略可能である。Next, a coating solution of the primer 〇 material is applied to the surface of the transparent sheet 7 on which the surface protection layer 8 is formed, on which the surface protection layer 8 is not formed, and dried to form the primer layer 6. As previously explained, the primer layer 6 is optional.

透明シート７の表面保護層８と反対側の面のプライマ一
層６の上に、または、透明シート７の表面上に、硬化型
樹脂の塗工液を塗布し、硬化させて、トラッキング形成
層５を形成する。A curable resin coating liquid is applied on the primer layer 6 on the side opposite to the surface protection layer 8 of the transparent sheet 7 or on the surface of the transparent sheet 7 and cured to form the tracking forming layer 5. form.

トラッキング形成層５を形成する際には、トラッキング
用案内溝９を形成することもでき、硬化型樹脂の塗工液
を塗布した後に、トラッキング用案内４９の所定の形状
を賦型するための母型を塗工面に密着させ、その状態で
塗工液中の樹脂を硬化させればよい。When forming the tracking forming layer 5, a tracking guide groove 9 can also be formed, and after applying a curable resin coating liquid, a matrix for forming a predetermined shape of the tracking guide 49 can be formed. The mold may be brought into close contact with the coating surface, and the resin in the coating solution may be cured in that state.

トラッキング形成層５の上に、真空蒸着やスパッタなど
の薄膜形成法により金属まはた合金の薄膜を形成して光
反射層４とする。金属、合金以外の場合には、適当な薄
膜形成法や塗布方法により光反射層４を形成する。A thin film of metal or alloy is formed on the tracking forming layer 5 by a thin film forming method such as vacuum evaporation or sputtering to form the light reflecting layer 4. In the case of materials other than metals and alloys, the light reflecting layer 4 is formed by an appropriate thin film forming method or coating method.

次に、光反射層４の表面に増感層を形成する。Next, a sensitizing layer is formed on the surface of the light reflective layer 4.

増感層は、熱可塑性樹脂（および光吸収剤）の溶剤溶液
を適当なコーティング法、具体的にはスピンコード法、
グラビアコート法、ロールコート法等により塗布形成す
る。The sensitizing layer is formed by applying a solvent solution of a thermoplastic resin (and a light absorber) using an appropriate coating method, specifically, a spin-coating method,
Coating and forming by gravure coating method, roll coating method, etc.

透明シート７には、その両面に、上記のようにして各層
を形成するが、いずれの面の加工を先にしても各層の相
互の関係が代わらない限り差支えない。Each layer is formed on both sides of the transparent sheet 7 as described above, but it does not matter which side is processed first as long as the mutual relationship between the layers does not change.

透明シート７に対する加工とは別に、支持体１を準備し
ておく。支持体１には前に述べたように補強を施したり
、光記録層以外の記録手段を形成しておく。Separately from processing the transparent sheet 7, the support 1 is prepared in advance. The support 1 is reinforced as described above or provided with recording means other than the optical recording layer.

加工済みの透明シート７と、支持体１とは、支持体１の
上の表面と透明シート７の下面の増感層３の表面のいず
れか一方または両方に接着剤を塗布し、必要に応じてオ
ーブンタイムを取った後に、両者を合わせ、プレス方法
か、あるいは、熱板を用いた熱プレス方法により加圧し
て密接着させることにより、光記録媒体が得られる。The processed transparent sheet 7 and the support 1 are attached by applying an adhesive to either or both of the upper surface of the support 1 and the surface of the sensitized layer 3 on the lower surface of the transparent sheet 7, as necessary. After taking an oven time, the two are combined and pressed by a pressing method or a hot pressing method using a hot plate to bring them into close contact, thereby obtaining an optical recording medium.

本発明の光記録媒体は、フレキンプルディスク、カード
、テープ、シート等、様々な形態、形状の物品に適用す
ることができる。The optical recording medium of the present invention can be applied to articles of various forms and shapes, such as flexible disks, cards, tapes, and sheets.

第３図は、光カードとして本発明の光記録媒体を用いた
場合の平面図である。すなわち、カード基材３０中に光
記録媒体３１を形成することにより光カードを得ること
ができる。すなわち、カード基材３０中に、光記録媒体
３１を埋設して形成するか【この場合、記録再生装置に
おける記録・再生の際のカード走行安定性のために光記
録媒体３１の表面がカード基材３０と同一平面をなすこ
とが好ましい）、またはカード基材３０の表面に光記録
媒体３１を接着剤等により接着させて形成することによ
り光カードを得ることができる。さらに、後述する実施
例５のような方法によっても光カードを作成することが
できる。FIG. 3 is a plan view when the optical recording medium of the present invention is used as an optical card. That is, an optical card can be obtained by forming the optical recording medium 31 in the card base material 30. That is, the optical recording medium 31 is formed by being embedded in the card base material 30. In this case, the surface of the optical recording medium 31 is formed by embedding it in the card base material 30 for stability of card running during recording and reproduction in the recording and reproducing device. The optical recording medium 31 can be formed by adhering the optical recording medium 31 to the surface of the card base material 30 using an adhesive or the like. Furthermore, an optical card can also be produced by a method such as in Example 5, which will be described later.

以下、本発明を実施例により説明するが、本発明は、こ
れら実施例に限定されるものではない。EXAMPLES The present invention will be explained below with reference to Examples, but the present invention is not limited to these Examples.

実施例１ 透明シートとしてアクリル樹脂板（日東樹脂製、厚さ４
００μｍ）を準備し、片面に次のようにトラッキング用
案内溝付きの保護層、光反射層、増感層を順に形成した
。Example 1 An acrylic resin plate (manufactured by Nitto Jushi, thickness 4) was used as a transparent sheet.
00 μm) was prepared, and a protective layer with a tracking guide groove, a light reflecting layer, and a sensitizing layer were sequentially formed on one side as follows.

ます、アクリル樹脂板とトラッキング用案内溝の逆形状
の母型の間にオリゴエステルアクリレート（東亜合成化
学（株）′製、商品名Ｍ−８０３０）９５重量部に光増
感剤を５重量部添加したものをサンドし、ロールをもち
いて’５ｇ／ｒｄとなるようラミネートした。紫外線を
照射してオリゴエステルアクリレートを硬化させたのち
、母型を剥がしてトラッキング用案内溝付き保護層を形
成した。First, 95 parts by weight of oligoester acrylate (manufactured by Toagosei Kagaku Co., Ltd., trade name M-8030) and 5 parts by weight of a photosensitizer were placed between the acrylic resin plate and the reverse-shaped matrix of the tracking guide groove. The added material was sandwiched and laminated using a roll so that the weight was 5 g/rd. After curing the oligoester acrylate by irradiating it with ultraviolet rays, the matrix was peeled off to form a protective layer with tracking guide grooves.

保、ＪＩＷの上にスパッタターゲットとしてテルルを使
用し、スパッタ法により３５０への光反射層を形成した
。スパッタは１３．５６ＭＨｚの高周波電源を用いて出
力５０Ｗ５アルゴンガス圧１×１０　”Ｔｏｒｒで行な
った。A light reflecting layer 350 was formed on JIW by sputtering using tellurium as a sputtering target. Sputtering was performed using a 13.56 MHz high frequency power source with an output of 50 W5 and an argon gas pressure of 1×10 2 Torr.

光反射層の上にポリ酢酸ビニル（日本合成化学（株）製
、商品名ゴーセニールに５Ｏ−Ｙ２）１重量部にメチル
イソブチルケトンを３重量部加え、よく攪拌したものを
１０００　ｒ、ｐ、＋ｎでスピンコードし増感層とした
。増感層の厚さは１〜２μｍである。On the light reflective layer, add 3 parts by weight of methyl isobutyl ketone to 1 part by weight of polyvinyl acetate (manufactured by Nippon Gosei Kagaku Co., Ltd., trade name: Gosenil 5O-Y2), stir well, and add 1000 r, p, +n. This was spin-coded to form a sensitized layer. The thickness of the sensitized layer is 1 to 2 μm.

別にポリ塩化ビニル樹脂フィルム（三菱樹脂（株）製、
厚さ３５０μｍ）を準備し、所定の事項の印刷を施した
後、このフィルムの接着予定面にポリウレタン系の２成
分型接着剤（東しく株）梨、商品名ＨＵ１２２６）を塗
布し、上記の各層を形成したシートの増感層側にロール
を用いてラミネートし、光記録媒体をｔ４た。Separately, polyvinyl chloride resin film (manufactured by Mitsubishi Plastics Co., Ltd.,
After preparing a film with a thickness of 350 μm and printing the specified items, a two-component polyurethane adhesive (Toshiku Co., Ltd. Nashi, trade name HU1226) is applied to the surface to be bonded. The sheet on which each layer was formed was laminated on the sensitized layer side using a roll, and an optical recording medium was obtained at t4.

得られた光記録媒体にＮＡＯ，３のレンズを用いて波長
８３０　、ｎ　ｍの半導体レーザを透明シート側から照
射したところ、出カフｍＷ、パルス幅３μＳｅｅで約２
．２μｍφの穴形状の良いビットが書き込めた。When the obtained optical recording medium was irradiated with a semiconductor laser having a wavelength of 830 nm and a wavelength of 830 nm from the transparent sheet side using a lens of NAO.
．． A bit with a good hole shape of 2 μmφ was able to write.

実施例２ 実施例１の増感層のポリ酢酸ビニル樹脂に近赤外線吸収
色素（三井東圧ファイン（株）製、ＰＡ−１００６）を
１０重量パーセント加え同様に光記録媒体を得た。Example 2 An optical recording medium was obtained in the same manner as in Example 1 by adding 10% by weight of a near-infrared absorbing dye (PA-1006, manufactured by Mitsui Toatsu Fine Co., Ltd.) to the polyvinyl acetate resin of the sensitizing layer.

この光記録媒体にＮＡＯ，３のレンズを用いて波長８３
０ｎｍの半導体レーザを透明シート側から照射したとこ
ろ出カフｎＷ、パルス幅２μｓｅＣで約２．２μｍφの
穴形状の良いピットが書き込めた。This optical recording medium has a wavelength of 83 using a NAO, 3 lens.
When a 0 nm semiconductor laser was irradiated from the transparent sheet side, well-shaped pits of about 2.2 μmφ were written with an output cuff of nW and a pulse width of 2 μsec.

実施例３ 実施例１の光反射層のスパッタターゲットとして、組成
比Ｔｅ　：　８０パーセント、Ｃｕ　：　１５パーセン
ト、Ｐｂ：’３パーセントの合金を用い、同様に光記録
媒体を得た。Example 3 An optical recording medium was obtained in the same manner as in Example 1 using an alloy having a composition ratio of 80% Te, 15% Cu, and 3% Pb as a sputtering target for the light reflective layer.

この光記録媒体にＮＡＯ，３のレンズを用いて波長８３
０ｎｍの半導体レーザを透明シート側から照射したとこ
ろ、実施例１とほぼ同様の結果が得られた。This optical recording medium has a wavelength of 83 using a NAO, 3 lens.
When a 0 nm semiconductor laser was irradiated from the transparent sheet side, almost the same results as in Example 1 were obtained.

実施例４ 実施例１の透明シートとして、射出成形法により形成し
たアクリル樹脂板（厚さ６００μｍ）を用い、同様に光
記録媒体を得た。Example 4 An optical recording medium was similarly obtained using an acrylic resin plate (thickness: 600 μm) formed by injection molding as the transparent sheet of Example 1.

この光記録媒体にＮＡＯ，３のレンズを用いて波長８３
０ｎｍの半導体レーザを透明シート側から照射したとこ
ろ、実施例１とほぼ同様の結果が得られた。This optical recording medium has a wavelength of 83 using a NAO, 3 lens.
When a 0 nm semiconductor laser was irradiated from the transparent sheet side, almost the same results as in Example 1 were obtained.

実施例５（光カードの製造例） 実施例１〜４で得られた光記録媒体を各々カード寸法に
打抜き、厚さ０．７５ｍｍで、光記録部（８０＋ｎ＋＋
＋Ｘ　２０ｍｍ）を有する光カードを得た。Example 5 (manufacturing example of optical card) The optical recording media obtained in Examples 1 to 4 were each punched out into card dimensions, with a thickness of 0.75 mm, and an optical recording part (80+n++
+X 20 mm) was obtained.

〔発明の効果〕〔Effect of the invention〕

本発明の光記録媒体は、以下の様な効果を有している。 The optical recording medium of the present invention has the following effects.

（イ）　記録感度が向上する。(b) Recording sensitivity is improved.

（ロ）　経時的な特性の安定性においてすぐれ、耐湿性
、保存性が向上する。(b) Excellent stability of properties over time, improved moisture resistance and storage stability.

（ハ）　光記録媒体を適用する物品の形態に制限される
ことなく、様々な物品への適用が可能となる。(c) The optical recording medium can be applied to various articles without being limited to the form of the article.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図および第２図は本発明の光記録媒体の断面図、第
３図は光カードの平面図である。 １・・・支持体、２・・・接着剤層、３・・・増感層、
４・・・光反射層、５・・・トラッキング層、６・・・
ブライマ一層、７・・・透明シート、８・・・表面保護
層。 も　１　ｚ 鳥　２７ 島　３　霞1 and 2 are cross-sectional views of the optical recording medium of the present invention, and FIG. 3 is a plan view of the optical card. 1... Support, 2... Adhesive layer, 3... Sensitized layer,
4... Light reflecting layer, 5... Tracking layer, 6...
One layer of braima, 7... transparent sheet, 8... surface protective layer. Also 1 z bird 27 island 3 haze

Claims (1)

【特許請求の範囲】 １、支持体上に、接着剤層を介して、光反射層と増感層
からなる光記録材料ならびに透明シートがこの順序で積
層されてなる光記録媒体であって、前記増感層が熱可塑
性樹脂からなり、前記光記録材料は実質的に空隙を有さ
ず、かつ、前記光反射層は外気から遮断されるように形
成されていることを特徴とする、光記録媒体。 ２、透明シートに、トラッキング用案内溝が形成されて
いる、特許請求の範囲第１項の光記録媒体。 ３、増感層が、更に光吸収剤を含有する、特許請求の範
囲第１項の光記録媒体。[Claims] 1. An optical recording medium in which an optical recording material consisting of a light reflecting layer and a sensitizing layer and a transparent sheet are laminated in this order on a support via an adhesive layer, The light-sensitizing layer is made of a thermoplastic resin, the optical recording material has substantially no voids, and the light-reflecting layer is formed to be shielded from the outside air. recoding media. 2. The optical recording medium according to claim 1, wherein a tracking guide groove is formed in the transparent sheet. 3. The optical recording medium according to claim 1, wherein the sensitizing layer further contains a light absorber.
JP61283398A 1986-10-29 1986-11-28 Optical recording medium Pending JPS63135292A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP61283398A JPS63135292A (en) 1986-11-28 1986-11-28 Optical recording medium
PCT/JP1987/000702 WO1988003310A1 (en) 1986-10-29 1987-09-25 Draw type optical recording medium
DE3751348T DE3751348T2 (en) 1986-10-29 1987-09-25 DRAW TYPE RECORDING MEDIA.
AU80291/87A AU612602B2 (en) 1986-10-29 1987-09-25 Draw type optical recording medium
US07/892,471 US5297132A (en) 1986-10-29 1987-09-25 Draw type optical recording medium
EP87906215A EP0288570B1 (en) 1986-10-29 1987-09-25 Draw type optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61283398A JPS63135292A (en) 1986-11-28 1986-11-28 Optical recording medium

Publications (1)

Publication Number Publication Date
JPS63135292A true JPS63135292A (en) 1988-06-07

Family

ID=17665002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61283398A Pending JPS63135292A (en) 1986-10-29 1986-11-28 Optical recording medium

Country Status (1)

Country Link
JP (1) JPS63135292A (en)

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