JPS592245A - Production of optical recording disk - Google Patents
Production of optical recording diskInfo
- Publication number
- JPS592245A JPS592245A JP57110226A JP11022682A JPS592245A JP S592245 A JPS592245 A JP S592245A JP 57110226 A JP57110226 A JP 57110226A JP 11022682 A JP11022682 A JP 11022682A JP S592245 A JPS592245 A JP S592245A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- recording
- substrate
- film
- disk
- 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
- 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
-
- 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
- G11B7/242—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
- G11B7/257—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
- G11B2007/25705—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 inorganic materials
- G11B2007/25715—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 inorganic materials containing 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
- G11B7/254—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
Abstract
Description
【発明の詳細な説明】
本発明は、光ビームの照射により情報を記録する光記録
ディスクの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing an optical recording disk in which information is recorded by irradiation with a light beam.
近年、レーザ光を用い、画像、各種データ等を実時間で
記録再生できる光ディスクの開発が行われ、大容量高密
度メモリとして大いに注目されている。In recent years, optical discs have been developed that can record and reproduce images, various data, etc. in real time using laser light, and are attracting much attention as large-capacity, high-density memories.
実時間の記録再生が可能なディスクの記録方法の一つに
、第１図に示す如く、ディスク基板１１Ｊ１に設けた記
録膜１２にレーザ光１６を集光させて当て、この局部加
熱により、記録膜１２を蒸発除去して、情報に対応する
ピット１３を形成する方法がある。この方法では、記録
膜１２を蒸発除去する関係上、記録膜１２の一方の面（
ディスク基板１１と反対の面）をフリーな状態にしなけ
ればならない。ところがこの状態では記録膜１２の膜面
に埃の付着等に起因するキズか生じ易（、実用的ではな
い。このため、記録膜１２を他の保護用基板１４で保護
する必要かあるが、その際、ディスク基板１１と保護用
基板１４０間にスペーサ１７を介して、記録膜１２と保
護用基板１４との間に空気層１６を設けなくてはならな
い。このような空気層１６を設けたディスクは強度的に
弱く、外力が加わってディス７がたわむと、記録膜１２
と保護用基板１４が接触し、記録膜１２をキジつけるこ
とがあり、取扱い性に難点がある。As shown in FIG. 1, one of the recording methods for a disc that allows real-time recording and playback is to focus a laser beam 16 on the recording film 12 provided on the disc substrate 11J1, and use this local heating to perform recording. There is a method of removing the film 12 by evaporation to form pits 13 corresponding to information. In this method, one side of the recording film 12 (
(the surface opposite to the disk substrate 11) must be kept free. However, in this state, the film surface of the recording film 12 is likely to be scratched due to dust adhesion (which is not practical. Therefore, it is necessary to protect the recording film 12 with another protective substrate 14. At that time, an air layer 16 must be provided between the recording film 12 and the protective substrate 14 via a spacer 17 between the disk substrate 11 and the protective substrate 140. The strength of the disk is weak, and when the disk 7 bends due to external force, the recording film 12
The protective substrate 14 may come into contact with the recording film 12 and damage the recording film 12, which poses a problem in handling.
これに対し、第２図に示すように、ディスク基板１１旧
の記録膜１２にレーザ光１６による熱で黒化した部位２
３を形成して記録する方法が提案されている。この方法
は熱による記録膜１２の相変化を利用するもので記録膜
自体の体積変化を利用しないだめ、接着剤２６を介して
保護用基板１４を記録膜１２に密着する構造をとること
ができる。On the other hand, as shown in FIG.
3 has been proposed. This method utilizes the phase change of the recording film 12 due to heat, and does not utilize the volume change of the recording film itself, so it is possible to adopt a structure in which the protective substrate 14 is closely attached to the recording film 12 via the adhesive 26. .
このため強度的に優れ、取扱いの容易なディスク構造に
することができる。この黒化記録を可能にする記録膜２
２としてけテルル’ｒｅの低級酸化物ＴθＯｘ （χ〈
２）があり、特公昭６４−３７２５号等に紹介されてい
る。Therefore, it is possible to obtain a disk structure that has excellent strength and is easy to handle. Recording film 2 that enables this blackening recording
2, tellurium're lower oxide TθOx (χ〈
2), which is introduced in Special Publication No. 64-3725, etc.
このＴｅＯｘ薄膜を形成する方法として、真空蒸着法が
最適であり、ディスク基板にＴｅＯｘ薄膜を設け、この
状態で５Ｍ［（Ｚの単一周波数の記録を行った場合、６
７ ｄＢ以上の高いＯＡ比が得ら、れる。The most suitable method for forming this TeOx thin film is the vacuum evaporation method.The TeOx thin film is provided on the disk substrate, and in this state, 5M [(When recording a single frequency of Z, 6
A high OA ratio of 7 dB or more can be obtained.
ところが、第２図に示した１うに記録膜ＴｅＯｘ上に光
硬化性樹脂等の接着剤２５を介して保護用基板１４を密
着すると、前述のＣ／Ｎ比は４〜５ ｄＢ低Ｆする結果
を招く。However, when the protective substrate 14 is closely attached to the recording film TeOx via an adhesive 25 such as a photocurable resin as shown in FIG. invite.
この原因としては、次のことが考えられる。真空蒸着法
で形成したＴｅＯｘ薄膜の表面は非常に活性な状態にあ
るため、未硬化状態の光硬化性樹脂を塗布した際、Ｔｅ
Ｏｘ薄膜１２と樹脂２６との間に化学反応が起こり、Ｔ
ｅＯｘ薄膜１２０表面が変質する。また接着樹脂２６の
光照射による硬化後においても樹脂成分のＴｅＯｘ薄膜
１２内への拡散が進み、特性低五の要因になっている。Possible causes of this are as follows. The surface of the TeOx thin film formed by vacuum evaporation is in a very active state, so when an uncured photocurable resin is applied, the TeOx thin film is
A chemical reaction occurs between the Ox thin film 12 and the resin 26, and T
The surface of the eOx thin film 120 is altered. Furthermore, even after the adhesive resin 26 is cured by light irradiation, the resin component continues to diffuse into the TeOx thin film 12, which is a factor in the poor characteristics.
本発明は、」−述の保護用基板の密着構造型ディスクに
おいて、か（る特性低丁のない光記録ディスクの製造方
法を提供するものである。The present invention provides a method for manufacturing an optical recording disk that does not suffer from such characteristic deterioration in a disk having a contact structure with a protective substrate as described above.
本発明の特徴は、ディスク基板にＴｅＯｘ薄膜を真空蒸
着法にて形成しだるものを、その状態で酸化性雰囲気中
で熱処理し、ＴｅＯｘ薄膜の表面を不活性な状態にした
後、保護用基板の密着工程に移すものである。A feature of the present invention is that a TeOx thin film is formed on a disk substrate by vacuum evaporation, then heat treated in that state in an oxidizing atmosphere to render the surface of the TeOx thin film inactive, and then used for protection. This is to move on to the process of adhering the substrate.
以■に本発明を図面をもとに詳細に説明する。The present invention will be described in detail below with reference to the drawings.
第３図は、反射読取り型光記録ディスクの一実施例の構
造模式図を示すものである。同心円あるいはスパイラル
状の溝状トラック３７を有するプラスチック製のディス
ク基板３１上にＴｅＯｘ薄膜３２を真空蒸着法によって
、例えば０．１μｍ程度の厚さで形成する。前述の溝状
トラック３７けレーザ光３６のガイドトラック機能を有
し、溝深さはレーザ光の１／１３波長に相当し、溝幅は
レーザ光で黒化記録されるビット幅に相当するものであ
る。FIG. 3 shows a schematic structural diagram of an embodiment of a reflective readable optical recording disk. A TeOx thin film 32 is formed to a thickness of, for example, about 0.1 μm on a plastic disk substrate 31 having concentric or spiral groove tracks 37 by vacuum evaporation. The 37 grooved tracks described above have a guide track function for the laser beam 36, the groove depth corresponds to 1/13 wavelength of the laser beam, and the groove width corresponds to the bit width recorded by blackening with the laser beam. It is.
ＴｅＯｘ薄膜３２を形成したディスク基板を酸化性雰囲
気中で熱処理し、ＴｅＯｘ薄膜３２０表面近傍にＴｅＯ
２層を主体りした不活性層３８を形成する。酸化性雰囲
気としては酸素の強制的な流入あるいはクリーンな大気
中とじ熱処理温度を４０′Ｃから８ｏ０Ｃの範囲にする
ことが望ましい。溝状トラック３７を有するディスク基
板３１は前述の如く、プラスチックで形成されるため、
熱処理温度を８０°Ｃ以上にすると、プラスチックの軟
化を招き、溝状トラック３７のエッヂにたれが生じドラ
ッキゾグ特性上、好ましくない。The disk substrate on which the TeOx thin film 32 has been formed is heat-treated in an oxidizing atmosphere, and TeOx is deposited near the surface of the TeOx thin film 320.
An inactive layer 38 mainly composed of two layers is formed. As the oxidizing atmosphere, it is preferable that oxygen be forced into the film or in clean air, and the heat treatment temperature be in the range of 40'C to 8o0C. Since the disk substrate 31 having the grooved tracks 37 is made of plastic as described above,
If the heat treatment temperature is 80° C. or higher, the plastic will become softened and the edges of the grooved tracks 37 will sag, which is unfavorable in terms of Dracchizog characteristics.
ＴｅＯｘ薄膜３２の熱酸化に基づいて形成される’ｒｅ
ｏ２を主体とする不活性層３８は、１ｏ１以Ｊ二あれば
、未硬化の光硬化性樹脂３６をＴｅＯｘ薄膜３２（！：
不活性層３８で形成される記録膜上に塗布しても、記録
膜の変質は不活性層３８により防止されるとともに、光
硬化性樹脂３６成分の記録膜内への拡散も回避され、有
効なものとなる。're formed based on thermal oxidation of the TeOx thin film 32
If the inactive layer 38 mainly consists of o2, if it is 1o1 or more, the uncured photocurable resin 36 is coated with a TeOx thin film 32 (!:
Even when applied onto the recording film formed by the inactive layer 38, the inert layer 38 prevents deterioration of the recording film and also prevents diffusion of the components of the photocurable resin 36 into the recording film, making it effective. Become something.
記録膜上に光硬化性樹脂３６を塗布した後、保護用のプ
ラスチック基板３４を密着加圧し、光硬化性樹脂に対応
した光源の照射で光硬化性樹脂３６を硬化きせて保護用
基板３４を接着し、ディスクとして完成させる。After coating the photocurable resin 36 on the recording film, the protective plastic substrate 34 is closely pressed, and the photocurable resin 36 is hardened by irradiation with a light source compatible with the photocurable resin to form the protective substrate 34. Glue it together and complete it as a disc.
本発明に基ついて完成された光記録ディスクにｓＭＨｚ
の単一周波数の記録を行った場合、５６ ｄＢ以上のＣ
／Ｎ比を示しており、光硬化性樹脂による保護基板の密
着前に比べて０７Ｎ比の低丁けほとんどない。sMHz in the optical recording disk completed based on the present invention.
C of 56 dB or more when recording a single frequency of
/N ratio, and the 07N ratio is hardly lower than that before the protective substrate was adhered with the photocurable resin.
以上説明したように本発明によれば、保護用基板の密着
構造型ディスクにおいても密着によるＣ／Ｎ比の低丁は
ほとんどな（、取扱い性および強度的に優れた高感度の
光記録ディスクを製造することが可能となる。As explained above, according to the present invention, there is almost no low C/N ratio due to close contact even in a disk with a close contact structure of a protective substrate. It becomes possible to manufacture.
第１図は、記録膜の溶融除去によって情報ピットを形成
する光記録ディスクの断面を示す模式図、第２図は、記
録膜の黒化により情報ピットを形成する光記録ディスク
の断面を示す模式図、第３図は本発明に基づく光記録デ
ィスクの一実施例の断面模式図である。
３１・・・・・・ディスク基板、３２・・・・・・Ｔｅ
Ｏｘ薄膜、３４・・・・・・保護用プラスチック基板、
３６・・・・・・光硬化性樹脂、３６・・・・・・レー
ザ光、３８・・・・・・不活性層。
代理人の氏名 弁理士 中 尾 敏 男 ばか１名第
１ 図
第 ２ 図
第３図Fig. 1 is a schematic diagram showing a cross section of an optical recording disk in which information pits are formed by melting and removing the recording film, and Fig. 2 is a schematic diagram showing a cross section of an optical recording disc in which information pits are formed by blackening the recording film. 3 are schematic cross-sectional views of an embodiment of an optical recording disk based on the present invention. 31...Disc substrate, 32...Te
Ox thin film, 34...protective plastic substrate,
36...Photosetting resin, 36...Laser light, 38...Inactive layer. Name of agent Patent attorney Toshio Nakao Baka 1st
1 Figure 2 Figure 3
Claims (2)
１Ｏｘ（ｘ〈１．○）層を形成した後、前記テルルの低
級酸化物層を酸化性雰囲気中で熱処理して、その表面に
ＴｅＯ２層を主体とする不活性層を形成し、その不活性
層に接着剤により保護用基板を密着せしめることを特徴
とする光記録ディスクの製造方法。(1) Lower tellurium oxide T as a recording layer on the substrate,
After forming the 1Ox (x<1.○) layer, the tellurium lower oxide layer is heat-treated in an oxidizing atmosphere to form an inert layer mainly composed of a TeO2 layer on its surface, and the inert layer is A method for manufacturing an optical recording disk, characterized by closely adhering a protective substrate to the layer using an adhesive.
行なわれることを特徴とする特許請求の範囲第１項記載
の光記録ディスクの製造方法。(2) The method for manufacturing an optical recording disk according to claim 1, wherein the heat treatment is performed at a temperature in the range of 40°C to 80°C.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57110226A JPS592245A (en) | 1982-06-25 | 1982-06-25 | Production of optical recording disk |
| US06/507,155 US4457794A (en) | 1982-06-25 | 1983-06-23 | Method for manufacturing optical memory disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57110226A JPS592245A (en) | 1982-06-25 | 1982-06-25 | Production of optical recording disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS592245A true JPS592245A (en) | 1984-01-07 |
Family
ID=14530281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57110226A Pending JPS592245A (en) | 1982-06-25 | 1982-06-25 | Production of optical recording disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS592245A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60246040A (en) * | 1984-05-21 | 1985-12-05 | Nec Home Electronics Ltd | Production of optical disk |
| JPS61141592A (en) * | 1984-12-13 | 1986-06-28 | Kuraray Co Ltd | Optical recording medium and production thereof |
| JPS61141591A (en) * | 1984-12-13 | 1986-06-28 | Kuraray Co Ltd | Optical recording medium comprising chalcogenide type oxide |
| JPS6274202A (en) * | 1985-09-26 | 1987-04-06 | デイ−ア・アンド・カンパニ− | Tractor hitch control apparatus |
| JPH05199802A (en) * | 1992-11-17 | 1993-08-10 | Iseki & Co Ltd | Apparatus for operating controlling part of riding farm machine |
-
1982
- 1982-06-25 JP JP57110226A patent/JPS592245A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60246040A (en) * | 1984-05-21 | 1985-12-05 | Nec Home Electronics Ltd | Production of optical disk |
| JPS61141592A (en) * | 1984-12-13 | 1986-06-28 | Kuraray Co Ltd | Optical recording medium and production thereof |
| JPS61141591A (en) * | 1984-12-13 | 1986-06-28 | Kuraray Co Ltd | Optical recording medium comprising chalcogenide type oxide |
| JPH0530195B2 (en) * | 1984-12-13 | 1993-05-07 | Kurare Kk | |
| JPS6274202A (en) * | 1985-09-26 | 1987-04-06 | デイ−ア・アンド・カンパニ− | Tractor hitch control apparatus |
| JPH05199802A (en) * | 1992-11-17 | 1993-08-10 | Iseki & Co Ltd | Apparatus for operating controlling part of riding farm machine |
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