JPS61942A - Light information recording medium - Google Patents
Light information recording mediumInfo
- Publication number
- JPS61942A JPS61942A JP59122373A JP12237384A JPS61942A JP S61942 A JPS61942 A JP S61942A JP 59122373 A JP59122373 A JP 59122373A JP 12237384 A JP12237384 A JP 12237384A JP S61942 A JPS61942 A JP S61942A
- Authority
- JP
- Japan
- Prior art keywords
- recording layer
- information recording
- light
- recording medium
- polyvinylidene chloride
- 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
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
-
- 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
- G11B7/2542—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 consisting essentially of organic 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
- G11B7/257—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
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、光ディスク、ビガオディスクあるいは、ＤＡ
Ｄ用コンパクトディスクとして適用し得る光情報記録媒
体に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to optical discs, video discs, and DA discs.
The present invention relates to an optical information recording medium that can be used as a D compact disc.
従来例の構成とその問題点
透明な基板の片面に光エネルギーによって変化可能な記
録層を形成し基板面側からレーザ光線によって記録・再
生を行う光情報記録媒体が最近急速に実用化が進んでい
る。記録層の材料開発のみならず記録層の水分や酸素に
よる劣化を防止し、機械的損傷を防ぐ保護膜の開発は極
めて重要であが検討され一部実用化されているものもあ
るが、高温高湿下で長期保存を行なう場合、架橋型樹脂
基板として近年、軽量化、耐機械的破損の目的からポリ
カーボネート、ポリメチルメタクリレート等のプラスチ
ックを使用する傾向にあシ、この場チルエチルケトン等
の極性溶剤を使用するために、基板を溶解しやすく、さ
らに膜中の遊離塩素が水分によりイオン化し、記録層の
劣化を加速する問題がある。Conventional structure and its problems Optical information recording media, in which a recording layer that can be changed by optical energy is formed on one side of a transparent substrate, and recording and reproduction are performed using a laser beam from the substrate side, have recently been rapidly put into practical use. There is. In addition to developing materials for the recording layer, it is extremely important to develop a protective film that prevents deterioration of the recording layer due to moisture and oxygen and prevents mechanical damage. For long-term storage under high humidity, there has been a trend in recent years to use plastics such as polycarbonate and polymethyl methacrylate as cross-linked resin substrates for the purpose of weight reduction and mechanical damage resistance. Since a polar solvent is used, there is a problem in that the substrate is easily dissolved, and free chlorine in the film is ionized by moisture, accelerating deterioration of the recording layer.
発明の目的
本発明は防湿性、耐化学劣化に優れた長期保存可能な光
情報記録媒体を提供するものである。OBJECTS OF THE INVENTION The present invention provides an optical information recording medium that is excellent in moisture resistance and chemical deterioration resistance and can be stored for a long period of time.
発明の構成
本発明は、ポリカーボネート等の透明基板の片面に設け
られた光情報記録層表面もしくは、前記記録層と基板の
両表面に光又は電子線によって硬化可能な樹脂被膜を設
け、さらにその被膜面上にダｙ
声化ビニリデッの薄膜を形成したことを特徴とし、この
構成の保護膜によシ記録層の水及びイオンによる劣化を
防ぎ光情報記録媒体の長期保存性を高めるものである。Structure of the Invention The present invention provides a resin coating that can be cured by light or electron beams on the surface of an optical information recording layer provided on one side of a transparent substrate such as polycarbonate, or on both surfaces of the recording layer and the substrate, and further provides a resin coating that can be cured by light or an electron beam. It is characterized in that a thin film of dye-containing vinylide is formed on the surface, and this protective film prevents the recording layer from deteriorating due to water and ions, thereby increasing the long-term storage stability of the optical information recording medium.
実施例の説明
第１図ａ、ｂにその構成を示す様に、記録層１の面又は
、記録層１と透明基板２の両面を覆って光又は電子線で
硬化可能な樹脂被膜３ａあるいは３ｂを設け、その表面
にポリ塩化ビニリデンの塗工膜４を形成する。この時、
光又は電子線で硬化可能な樹脂中に未開環エポキシ基を
有する高分子又は低分子物を架橋させるか、混合の状態
で保有する事により、ポリ塩化ビニリデン塗工膜４の遊
離塩素が記録層１面へ拡散する事を反応抑制する。DESCRIPTION OF THE EMBODIMENTS As shown in FIGS. 1a and 1b, a resin coating 3a or 3b that can be cured by light or electron beams covers the surface of the recording layer 1 or both surfaces of the recording layer 1 and the transparent substrate 2. is provided, and a coating film 4 of polyvinylidene chloride is formed on the surface thereof. At this time,
By cross-linking a polymer or low-molecular substance having an unopened epoxy group in a light or electron beam curable resin, or by holding it in a mixed state, free chlorine in the polyvinylidene chloride coating film 4 is transferred to the recording layer. Prevents the reaction from spreading to one surface.
光又は電子線で硬化可能な樹脂としては、ポリオールア
クリレート、ポリエステルアクリレート。Examples of resins that can be cured with light or electron beams include polyol acrylate and polyester acrylate.
エポキシアクリレート、シリコーンアクリレート。Epoxy acrylate, silicone acrylate.
ウレタンアクリレート、ポリアセタールアクリレる原液
組成中の適正混合量も示す。樹脂１ｏＯ重量部に対して
の混合部（ＨＰＲ）が０．５〜５゜ＨＰＲの時良好な結
果が得られた。The appropriate mixing amounts in the stock solution composition of urethane acrylate and polyacetal acrylate are also shown. Good results were obtained when the mixing part (HPR) was 0.5 to 5 degrees HPR per 100 parts by weight of resin.
以下余白 以下実施例について説明する。Margin below Examples will be described below.
実施例
厚み１．２簡のポリカーボネート基板の片面に、真空蒸
着でＴｏ、Ｔ’ｅＯ２を主成分とする光情報記録層を設
けさらにその表面と基板の表面に下記組成の樹脂を塗布
し１２ｏｗ／ｃｍの高圧水銀灯で照射して、記録面上は
１００μｍ、基板面上は６μｍの被膜を形成した。Example An optical information recording layer containing To and T'eO2 as main components was provided on one side of a 1.2-thick polycarbonate substrate by vacuum deposition, and a resin having the following composition was coated on that surface and the surface of the substrate. A film of 100 μm thick was formed on the recording surface and a film of 6 μm thick was formed on the substrate surface by irradiation with a high-pressure mercury lamp of cm.
（組成）
エポキシアクリレート樹脂 １ｏｏ創脚（粘度
１５０ボイズ）
ビニルシクロヘキサンジオキシド ２ｏ ＃２−ヒド
ロキシー２−メチルグロビオフェノン ５ 〃次
に上記樹脂被膜面上にポリ塩化ビニリデンのメチルエチ
ルケトン溶液を塗布乾燥して厚み１０μｍの膜を形成し
た。(Composition) Epoxy acrylate resin 1oo wound leg (viscosity 150 voids) Vinyl cyclohexane dioxide 2o #2-hydroxy-2-methylglobiophenone 5 Next, a solution of polyvinylidene chloride in methyl ethyl ketone was applied on the resin coating surface and dried. A film with a thickness of 10 μm was formed.
本実施例による試料と、従来技術による比較試料として
、エポキシアクリレート樹脂のみを保護膜としたものを
、７０℃、９５％ＲＨ雰囲気の中で加速劣化テストを行
ない、その時の記録媒体の図からも明らかな様に本実施
例品は１００日間でも透過率は変化を示さず長期間の保
存性を確保出来た。An accelerated deterioration test was conducted on the sample according to this example and the comparative sample according to the prior art, which had only epoxy acrylate resin as a protective film, in an atmosphere of 70°C and 95% RH. As is clear, the product of this example showed no change in transmittance even after 100 days, and was able to ensure long-term storage stability.
その他の樹脂組成とポリ塩化ビニリデンの組合せによっ
ても第２図と同等な良好な結果が得られた０
発明の効果
以上のように本発明による光情報記録媒体は、光又は電
子線によって硬化可能な樹脂とポリ塩化ビニリデンを積
層した保護膜を備えることによって、耐湿性を向上し化
学劣化を抑制することが出来、これによって広範囲の温
度、湿度雰囲気中で長期間にわたっての保存を可能にし
たものであシ、実用上きわめて有利なものである。Good results equivalent to those shown in FIG. 2 were also obtained by combinations of other resin compositions and polyvinylidene chloride. Equipped with a protective film laminated with resin and polyvinylidene chloride, it is possible to improve moisture resistance and suppress chemical deterioration, making it possible to store it for a long period of time in a wide range of temperature and humidity environments. This is extremely advantageous in practical terms.
第１図ａは本発明の一実施例における光情報記録媒体の
断面図、第１図すは他の実施例の断面図、第２図は加速
劣化テストにおける光透過率の時間特性を示すグラフで
ある。
１・・・・・・記録層、２・・・・・・透明基板、３・
・・・・・光又は電子線硬化性樹脂被膜、４・・・・・
・ポリ塩化ビニリデン０
代理人の氏名 弁理士 中 尾 敏 男 へか１名第１
図
（ＩＪ）Fig. 1a is a cross-sectional view of an optical information recording medium according to an embodiment of the present invention, Fig. 1 is a cross-sectional view of another embodiment, and Fig. 2 is a graph showing the time characteristics of light transmittance in an accelerated deterioration test. It is. 1...Recording layer, 2...Transparent substrate, 3.
...Light or electron beam curable resin coating, 4...
・Polyvinylidene chloride 0 Name of agent: Patent attorney Toshio Nakao Heka 1 person No. 1
Diagram (IJ)
Claims (2)
もしくは、前記記録層と基板の両表面に光又は電子線に
よって硬化可能な樹脂被膜を設け、さらにその面上にポ
リ塩化ビニリデンの薄膜が形成された光情報記録媒体。(1) A resin coating that can be cured by light or electron beam is provided on the surface of the optical information recording layer provided on one side of the transparent substrate, or on both surfaces of the recording layer and the substrate, and further, polyvinylidene chloride is applied on the surface. An optical information recording medium on which a thin film is formed.
環していないエポキシ基を含有する特許請求の範囲第１
項記載の光情報記録媒体。(2) Claim 1 in which the resin coating that can be cured by light or electron beam contains an epoxy group that is not ring-opened.
Optical information recording medium described in Section 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59122373A JPS61942A (en) | 1984-06-14 | 1984-06-14 | Light information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59122373A JPS61942A (en) | 1984-06-14 | 1984-06-14 | Light information recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61942A true JPS61942A (en) | 1986-01-06 |
Family
ID=14834239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59122373A Pending JPS61942A (en) | 1984-06-14 | 1984-06-14 | Light information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61942A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713761A (en) * | 1985-07-18 | 1987-12-15 | Pitney Bowes, Inc. | System for centralized processing of accounting and payment functions |
| JPH01118769A (en) * | 1987-05-23 | 1989-05-11 | Behringwerke Ag | One-level measurement for antibody specific to antigen |
| US4958280A (en) * | 1987-07-10 | 1990-09-18 | Vistakon, Inc. | Apparatus and method for satisfying disposable contact lens prescriptions |
-
1984
- 1984-06-14 JP JP59122373A patent/JPS61942A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713761A (en) * | 1985-07-18 | 1987-12-15 | Pitney Bowes, Inc. | System for centralized processing of accounting and payment functions |
| JPH01118769A (en) * | 1987-05-23 | 1989-05-11 | Behringwerke Ag | One-level measurement for antibody specific to antigen |
| US4958280A (en) * | 1987-07-10 | 1990-09-18 | Vistakon, Inc. | Apparatus and method for satisfying disposable contact lens prescriptions |
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