JPS613337A - optical information recording medium - Google Patents
optical information recording mediumInfo
- Publication number
- JPS613337A JPS613337A JP59123007A JP12300784A JPS613337A JP S613337 A JPS613337 A JP S613337A JP 59123007 A JP59123007 A JP 59123007A JP 12300784 A JP12300784 A JP 12300784A JP S613337 A JPS613337 A JP S613337A
- Authority
- JP
- Japan
- Prior art keywords
- information recording
- optical information
- recording medium
- recording layer
- film
- 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
- 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
- G11B7/252—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
- G11B7/242—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
- G11B2007/24302—Metals or metalloids
- G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
-
- 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
- G11B2007/24318—Non-metallic elements
- G11B2007/2432—Oxygen
-
- 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
- G11B7/257—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
(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。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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・ビディオディスクあるいは、Ｄ
ＡＤ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 directed to optical discs, video discs, and digital discs.
The present invention relates to an optical information recording medium that can be used as an AD compact disc.
従来例の構成とその問題点
情報記録の高密度化にともないプラスチック又はガラス
基板上にＴｅ、 ＴｅＯ２を主成分とした光学的情報記
録薄膜を形成し、レーザ光によって記録再生の出来る光
デイスクメモリが広く用いられて来た。しかし情報記録
層だけでは、機械的破損や空気中の水分等によって腐食
劣化を起し長期保存が出来ない。従ってその表面に有機
高分子保護膜や無機の酸化膜等を設けている。有機高分
子材料としてエポキシ樹脂等が使用されているが、厚み
制約や樹脂自身の透湿率を小さくするのに限界があり、
充分な防湿性を得ることが出来ていない。Conventional Structures and Problems With the increasing density of information recording, optical disk memories have been created in which optical information recording thin films containing Te and TeO2 as main components are formed on plastic or glass substrates and can be recorded and reproduced using laser light. It has been widely used. However, the information recording layer alone cannot be stored for long periods of time due to mechanical damage and corrosion due to moisture in the air. Therefore, an organic polymer protective film, an inorganic oxide film, etc. are provided on the surface. Epoxy resins are used as organic polymer materials, but there are limitations on thickness and the ability to reduce the moisture permeability of the resin itself.
It is not possible to obtain sufficient moisture resistance.
無機の酸化膜としては、Ｓ ｉ０２膜等が使用されてい
るが、熱膨張係数の異なることによって熱的破損（クラ
ック）が生じやすく、耐湿性、耐酸化性の保護膜として
問題がある。As the inorganic oxide film, an Si02 film or the like is used, but it is prone to thermal damage (cracks) due to different coefficients of thermal expansion, and is problematic as a moisture-resistant and oxidation-resistant protective film.
発明の目的
本発明は防湿性、耐熱的破損の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 heat damage resistance and can be stored for a long period of time.
発明の構成
本発明による光情報記録媒体は、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
両面に、光硬化又は電子線硬化性樹脂被膜を設け、さら
にその面上に塩素化パラキ７リレン重合体を気相重合法
によって形成したもので、防湿性、熱的破損のない保存
性に優れたものである。Structure of the Invention The optical information recording medium according to the present invention includes a photocurable or electron beam curable resin coating provided on the surface of an optical information recording layer provided on one side of a transparent substrate or on both sides of the recording layer and the substrate, and further comprising: A chlorinated para-7-lylene polymer is formed on the surface by a gas phase polymerization method, and it has excellent moisture resistance and storage stability without thermal damage.
実施例の説明
本発明者等は、透湿率が極めて小さく、熱的破損に強い
材料として、モノクロロポリパラキシレン、ジクロロポ
リパラキシレンの気相重合膜に注目し研究開発を行なっ
た。その結果、保存初期の段階では、光情報記録層に対
して防湿性が高く、熱的破損のない保護膜として有効で
ある事が実証された。しかしながら相対湿度９０％ＲＨ
以上で、温度７０℃以上の雰囲気で長期保存を行なうと
、塩素化パラキシリレン重合体中の遊離塩素がイオン化
して、Ｔｅ及びＴａＯ２を主成分とした元情報記録層を
腐食し記録再生に影響を与えることが確認された。従っ
て本発明者等は、検討を重ねた結果、第１図ａ、ｂにそ
の構成を示す様に、光情報記録層１の表面又は、光情報
記録層１と透明基板２の両表面を覆って光硬化又は電子
線硬化樹脂被膜３ａあるいは３ｂを設け、さらにその表
面に塩素化パラキシリレン重合体膜４を形成することに
より長期保存に耐え得る保護膜を備えた光情報記録媒体
を得る事が出来た。特に光硬化性樹脂、電子線硬化樹脂
被膜中に未開環エポキシ基を含有する事により効果を発
揮する。これはエポキシ基が遊離塩素と反応するためで
ある。Description of Examples The present inventors conducted research and development focusing on gas phase polymerized films of monochloropolyparaxylene and dichloropolyparaxylene as materials with extremely low moisture permeability and strong resistance to thermal damage. As a result, it was demonstrated that in the early stages of storage, the film has high moisture resistance for the optical information recording layer and is effective as a protective film without thermal damage. However, the relative humidity is 90%RH.
As described above, if stored for a long time in an atmosphere with a temperature of 70°C or higher, free chlorine in the chlorinated paraxylylene polymer will ionize, corrode the original information recording layer mainly composed of Te and TaO2, and affect recording and reproduction. It has been confirmed that it will be given. Therefore, as a result of repeated studies, the present inventors have decided to cover the surface of the optical information recording layer 1 or both surfaces of the optical information recording layer 1 and the transparent substrate 2, as shown in FIGS. 1a and 1b. By providing a photo-curing or electron beam-curing resin film 3a or 3b and further forming a chlorinated paraxylylene polymer film 4 on its surface, an optical information recording medium with a protective film that can withstand long-term storage can be obtained. Ta. In particular, the effect is exhibited by containing an unopened epoxy group in the photocurable resin or electron beam cured resin coating. This is because epoxy groups react with free chlorine.
光硬化性及び電子線樹脂としては、ポリオールアクリレ
ート、ポリエステルアクリレート、エポキシアクリレー
ト、ンリコーンアクリレート、ウレタンアクリレート、
ポリアセタールアクリレート等が挙げられ、次に構造中
に少なく店も一つのエポキシ基を有する化合物を混合し
て紫外線又は電子線で架積硬化させる。混合率は、該硬
化性樹脂１００部に対して０．５〜５０部の範囲が効果
を有する。０．６部以下では、遊離塩素を充分に捕捉す
ることが出来ない。又、５０部以上では、該硬化性樹脂
中に未硬化部が生じ機械的強度に問題が生じる。次表に
エポキシ基を有する化合物の一例と適正混合率を示す。Photocurable and electron beam resins include polyol acrylate, polyester acrylate, epoxy acrylate, urethane acrylate,
Examples include polyacetal acrylate, and then a compound having at least one epoxy group in its structure is mixed and cross-cured with ultraviolet rays or electron beams. A mixing ratio of 0.5 to 50 parts based on 100 parts of the curable resin is effective. If the amount is less than 0.6 parts, free chlorine cannot be sufficiently captured. Moreover, if the amount exceeds 50 parts, uncured portions will occur in the curable resin, causing a problem in mechanical strength. The following table shows an example of a compound having an epoxy group and the appropriate mixing ratio.
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胴のポリカーボネート基板の片面に真空蒸着
でＴｅ、ＴａＯ２を主成分とする光情報記録層を設け、
さらにその表面に下記組成の光硬化樹脂を塗布し１２０
Ｗ／ｌｙｎ の高圧水銀灯で照射して１０ｏＩＪｍの
被膜を形成した。Example An optical information recording layer containing Te and TaO2 as main components was provided on one side of a polycarbonate substrate with a thickness of 1.2 cm by vacuum deposition,
Furthermore, a photocurable resin with the following composition is applied to the surface.
A film of 10 oIJm was formed by irradiation with a W/lyn high pressure mercury lamp.
エポキシ７′クリレート樹脂（粘度１５０ボイズ）１０
０部（重量）
ビニルシクロヘキサンジオキシド ２０部２−ヒド
ロキシ−２−メチルプロピオフェノン６部
さらにその光硬化樹脂被膜の表面及び基板をすべて包む
ように厚み１０μｍモノクロロパラキシリレン重合体膜
を気相反応で形成した。方法はモノクロロパラキシリレ
ン２量体をモノマーとして真空中（４Ｘ１０−２ｔｏｒ
ｒ ）で約１７０’Ｃで昇華させ、さらにその２量体を
７００°Ｃの加熱炉で分解しラジカル分子を形成し、さ
らにそのラジカル分子を室温（約２６°Ｃ）で重合しポ
リマーの膜を形成した。Epoxy 7' acrylate resin (viscosity 150 voids) 10
0 parts (weight) Vinyl cyclohexane dioxide 20 parts 2-hydroxy-2-methylpropiophenone 6 parts Furthermore, a 10 μm thick monochloroparaxylylene polymer film was subjected to gas phase reaction so as to cover the entire surface of the photocured resin film and the substrate. It was formed with The method is to use monochloropara-xylylene dimer as a monomer in vacuum (4X10-2torr).
r ) at about 170'C, the dimer is further decomposed in a heating furnace at 700°C to form radical molecules, and the radical molecules are further polymerized at room temperature (about 26°C) to form a polymer film. was formed.
本実施例の光情報記録媒体と比較例として、保護膜のな
い記録媒体とモノクロロパラキシリレン重合体のみを保
護膜にした記録媒体とを７０°Ｃ９５％ ＲＨの雰囲気
で加速劣化テストを行ない、記録媒体の光（８３０量ｍ
）透過率変化と時間の関係を第２図に示した。６は本実
施例によるもの、６量前者の比較例、７は後者の比較例
を示す。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せず、又相対湿度９０％一定で７０
’Ｃと３０’Ｃの温度サイクル下での加速テストでも本
実施例品の光（８３０量ｍ）透過率は、第２図と同じ結
果を示した。この二つの実験から長期保存性に優れてい
ることがわかる。An accelerated deterioration test was conducted on the optical information recording medium of this example and as a comparative example, a recording medium without a protective film and a recording medium with only a monochloroparaxylylene polymer as a protective film in an atmosphere of 70°C and 95% RH. Light from recording medium (830 m
) Figure 2 shows the relationship between transmittance change and time. 6 shows the one according to the present example, 6 shows a comparative example of the former, and 7 shows a comparative example of the latter. As is clear from the figure, the transmittance of this example product did not change even for 100 days, and at a constant relative humidity of 90%, the transmittance was 70%.
Even in the accelerated test under the temperature cycle of 'C and 30'C, the light transmittance (830 m) of the product of this example showed the same results as in FIG. 2. These two experiments show that it has excellent long-term storage stability.
その他の樹脂組成とモノクロロパラキシリレン重合体と
の組合せにおいても同様な良好な結果が得られた。又、
モノクロロパラキシリレン重合体のかわりにジクロロパ
ラキシリレン重合体を使用しても、同様々良好な結果が
得られた。Similar good results were obtained with combinations of other resin compositions and monochloroparaxylylene polymers. or,
Similar good results were obtained when dichloropara-xylylene polymer was used instead of monochloro-para-xylylene polymer.
発明の効果
以上のように本発明に上れば、光又は電子線硬化樹脂と
塩素化パラキシリレン重合体を積層した保護膜を備える
ことによって、耐湿性、耐熱的破損を向上させ、広範囲
な温度、湿度雰囲気中で長期間にわたって保存すること
が出来る実用上きわめて有利な光情報記録媒体を得るこ
とができる。Effects of the Invention As described above, according to the present invention, by providing a protective film in which a photo- or electron beam-curable resin and a chlorinated para-xylylene polymer are laminated, moisture resistance and thermal breakage resistance are improved, and it can be used over a wide range of temperatures. A practically extremely advantageous optical information recording medium that can be stored for a long period of time in a humid atmosphere can be obtained.
第１図ａＦｉ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・・・・・・光情報記録層、２・・・・透明基板、３
・・・・・・光及び電子線硬化性樹脂被膜、４・・・・
・塩素化パラキシリレン重合体膜。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図FIG. 1 aFi is a cross-sectional view of an optical information recording medium in one embodiment of the present invention, and FIG. 1 is a cross-sectional view of another embodiment. FIG. 2 is a graph showing the time characteristics of light transmittance in an accelerated deterioration test. 1... Optical information recording layer, 2... Transparent substrate, 3
......Light and electron beam curable resin coating, 4...
・Chlorinated paraxylylene polymer membrane. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure
Claims (1)
は、前記記録層と基板の両表面に、光硬化又は電子線硬
化性樹脂膜を設けさらにその面上に塩素化パラキシリレ
ン重合膜が形成された光情報記録媒体。A photo-curable or electron beam-curable resin film 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 a chlorinated paraxylylene polymer film is formed on that surface. Optical information recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59123007A JPS613337A (en) | 1984-06-15 | 1984-06-15 | optical information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59123007A JPS613337A (en) | 1984-06-15 | 1984-06-15 | optical information recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS613337A true JPS613337A (en) | 1986-01-09 |
Family
ID=14849941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59123007A Pending JPS613337A (en) | 1984-06-15 | 1984-06-15 | optical information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS613337A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116661A (en) * | 1990-07-10 | 1992-05-26 | Showa Denko K.K. | Drip-absorbing sheet |
| JP2011027319A (en) * | 2009-07-24 | 2011-02-10 | Chofu Seisakusho Co Ltd | Air temperature controller |
| JP2011027344A (en) * | 2009-07-27 | 2011-02-10 | Chofu Seisakusho Co Ltd | Air temperature controller |
| JP2011153817A (en) * | 2011-04-01 | 2011-08-11 | Chofu Seisakusho Co Ltd | Air temperature conditioning machine |
-
1984
- 1984-06-15 JP JP59123007A patent/JPS613337A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5116661A (en) * | 1990-07-10 | 1992-05-26 | Showa Denko K.K. | Drip-absorbing sheet |
| JP2011027319A (en) * | 2009-07-24 | 2011-02-10 | Chofu Seisakusho Co Ltd | Air temperature controller |
| JP2011027344A (en) * | 2009-07-27 | 2011-02-10 | Chofu Seisakusho Co Ltd | Air temperature controller |
| JP2011153817A (en) * | 2011-04-01 | 2011-08-11 | Chofu Seisakusho Co Ltd | Air temperature conditioning machine |
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