JPH0329131A - Optical disk and production thereof - Google Patents
Optical disk and production thereofInfo
- Publication number
- JPH0329131A JPH0329131A JP1162583A JP16258389A JPH0329131A JP H0329131 A JPH0329131 A JP H0329131A JP 1162583 A JP1162583 A JP 1162583A JP 16258389 A JP16258389 A JP 16258389A JP H0329131 A JPH0329131 A JP H0329131A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- substrate
- core material
- optical disc
- resin
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims 1
- 239000011162 core material Substances 0.000 abstract description 24
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000000151 deposition Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000005374 Kerr effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910002546 FeCo Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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の及びその製造方法に関するもので
あり、更に詳しくは信頼性に優れた光ディスク及びそれ
を簡便に製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an optical disc and a method for manufacturing the same, and more particularly to an optical disc with excellent reliability and a method for easily manufacturing the same.
（従来の技術）
従来知られている片面に記録可能な光ディスクは、第４
図に示すとおり、光学的に読みだし可能なビット列、ト
ラック溝などの情報記録パターンを有するスタンバから
、射出成形広、身・Ｉ出圧縮或形法または２Ｐ法などに
より情報記録パターンを転写したレプリカ基板９上の情
報記録パターン而に記録膜２を成膜し、記録膜２上に有
機物保護膜５を形成した構造を有している。また、両面
に記録可能な光ディスクは、第５図に示すとおり、レプ
リカ基板９上に記録膜２を成膜し、この記録膜２上に接
着剤６を介して情報記録パターン面に記録膜２を成膜し
たレプリカ基板９を貼り合せた構造を有している。(Prior art) Conventionally known single-sided recordable optical discs are
As shown in the figure, a replica is obtained by transferring the information recording pattern from a standber having an information recording pattern such as an optically readable bit string or track groove by injection molding, wide compression, molding, or 2P method. It has a structure in which a recording film 2 is formed on the information recording pattern on the substrate 9, and an organic protection film 5 is formed on the recording film 2. In addition, as shown in FIG. 5, a double-sided recordable optical disc is produced by forming a recording film 2 on a replica substrate 9, and applying an adhesive 6 to the recording film 2 on the information recording pattern surface. It has a structure in which replica substrates 9 on which a film is formed are bonded together.
しかしながら、これらはいずれもレプリカ基板が記録膜
を担持している光ディスクであり、情報の記録，再生，
消去はこのレプリカ基板を介し記録膜に光を照射して行
なわれるために、レプリカ基板の複製工程における射出
成形法、射出圧縮成形法は複屈折率及び機械特性を厳密
に制御しながら行わなければならないという問題点を有
し、２Ｐ法によるレプリカ基板の複製はその製造プロセ
スそのものが複雑であるという問題点を有する。However, these are all optical discs in which a replica substrate carries a recording film, and they are used for recording, reproducing, and recording information.
Since erasing is performed by irradiating the recording film with light through this replica substrate, the injection molding and injection compression molding methods in the replication process of the replica substrate must be performed while strictly controlling the birefringence and mechanical properties. However, replica substrate reproduction using the 2P method has the problem that the manufacturing process itself is complicated.
また上記した従来の光ディスクは、その製膜工程あるい
は組立工程中において、用いる有機保護膜５あるいは接
着剤６中に含有する塩素イオン、酸、水分などが記録膜
に混入してしまうために、記録膜の腐食が完全に防止さ
れず、長期信頼性の点で問題があった。更に、両面に記
録可能な光ディスクは接着剤９を介して貼り合わせてな
るものであるが、その貼り合わせの際にズレが生じたり
、接着剤中に含まれる異物や接着剤塗布時のセコータの
荷重などによりあるいはプレス時にディスクが物理的に
損傷してしまうことがある。In addition, in the conventional optical disk described above, chlorine ions, acids, moisture, etc. contained in the organic protective film 5 or adhesive 6 used get mixed into the recording film during the film forming process or assembly process. Corrosion of the membrane was not completely prevented, causing problems in terms of long-term reliability. Furthermore, double-sided recordable optical discs are bonded together using adhesive 9, but misalignment may occur during bonding, foreign matter contained in the adhesive, or damage to the secoter when applying the adhesive. The disk may be physically damaged due to load or during pressing.
（発明が解決しようとする課題）
本発明は従来技術の問題点に鑑みなされたちのであり、
その目的は長期信頼性に優れた光ディスク及びその簡便
な製造法を提供することにある。(Problems to be Solved by the Invention) The present invention has been made in view of the problems of the prior art.
The purpose is to provide an optical disc with excellent long-term reliability and a simple manufacturing method thereof.
（課題を解決するための手段）
本発明者らは上記課題を解決するために鋭意検討を行っ
た結果、光学的に読みだし可能な情報記録パターンを有
する芯材基板を用いることにより、信頼性に優れた光デ
ィスクが得られること、更にこの光ディスクを簡便に製
造できることを見出だし本発明を完成するに至った。す
なわち本発明は、光学的に読みだし可能な情報記録パタ
ーンを有する芯材基板により記録膜が担持され、該芯材
基板が樹脂により被覆されているでいることを特徴とす
る光ディスク及びその製造方法である。以下、本発明を
図面に基づき説明する。第１図は本発明の光ディスクの
構造の一例を示す該略図である。(Means for Solving the Problems) The present inventors have conducted extensive studies to solve the above problems, and have found that reliability can be improved by using a core substrate having an optically readable information recording pattern. The present inventors have discovered that an optical disc with excellent properties can be obtained and that this optical disc can be manufactured easily, and have completed the present invention. That is, the present invention provides an optical disc and a method for manufacturing the same, characterized in that a recording film is supported by a core substrate having an optically readable information recording pattern, and the core substrate is coated with a resin. It is. Hereinafter, the present invention will be explained based on the drawings. FIG. 1 is a schematic diagram showing an example of the structure of an optical disc of the present invention.
本発明における光ディスクは、特に限定されないが、相
変化型、フォトクロミック型、光磁気記録型のものなど
が例示される。The optical disk in the present invention is not particularly limited, but examples include phase change type, photochromic type, and magneto-optical recording type.
第２図は本発明において用いられる芯材基板の構造の一
例を示す断面図であり、本発明の光ディスクは第１図に
示すとおり、記録膜２が芯材基板１に担持され、該芯材
基板が樹脂４により被覆されてなることに特徴のあるも
のである。このような構造とすることにより、本発明の
光ディスクは、従来の光ディスクのようにレプリカ基板
を介しての情報の記録，再生．消去が行なわれることが
なくなるために、その製造過程において複屈折率及び機
械特性の制御を含むレプリカ基板の複製工程は不必要と
なり、その製造方法は簡便なものとなる。また本発明の
光ディスクは、また記録膜が担持した芯材基板が樹脂に
より被覆されるために、情報記録パターン及び記録膜が
樹脂により密閉され、記録膜の腐食が完全に防止される
。更に、本発明の光ディスクのうち両面に記録可能なも
のは、従来の光ディスクのように貼り合わせる構造でな
いので、情報記録パターン及び記録膜の物理的損傷は防
止され、貼り合わせ０際に生ずるズレなどによる信頼性
の低下がなくなる。FIG. 2 is a cross-sectional view showing an example of the structure of the core substrate used in the present invention. As shown in FIG. 1, the optical disc of the present invention has a recording film 2 supported on the core substrate 1, and the core substrate This is characterized in that the substrate is coated with resin 4. With such a structure, the optical disc of the present invention allows information to be recorded and reproduced via a replica substrate like a conventional optical disc. Since erasing is not performed, a replica substrate duplication process including control of birefringence and mechanical properties is unnecessary in the manufacturing process, and the manufacturing method becomes simple. Further, in the optical disc of the present invention, since the core substrate carried by the recording film is coated with resin, the information recording pattern and the recording film are sealed with the resin, and corrosion of the recording film is completely prevented. Furthermore, among the optical discs of the present invention that are recordable on both sides, they do not have a structure in which they are pasted together like conventional optical discs, so physical damage to the information recording pattern and recording film is prevented, and misalignment that occurs when pasting is avoided. This eliminates the reduction in reliability due to
本発明において用いられる芯材基板は、光学的に読み゛
だし可能な情報記録パターンを有する芯材基板の作製方
法としては、光学的に読みだし可能なビット列、トラッ
ク溝などの情報記録パターンを，有するスタンパと熱可
塑性樹脂を用いた射出成形法、射出圧縮成形法もしくは
スタンピング法、上記スタンパと光硬化性樹脂、熱硬化
性樹脂を用いた鋳造法またはガラスを用いたエッチング
法などにより作製することができる。第３図に芯材基板
の作製過程の一例を示す。第３図においては、スペーサ
−８によって配置したスタンパ７と樹脂を用いて、例え
ば射出成形あるいは射出圧縮成形などを行なうことによ
り芯材基板が得られる。本発明において用いる芯材基板
は、片面にのみ情報記録パターンを有するものでも両面
に情報記録パターンを有するものでもよく、前者により
片面に記録可能な光ディスクを、後者により第１図に示
すような両面に記録可能な光ディスクを得ることができ
る。The core substrate used in the present invention has an optically readable information recording pattern such as a bit string or track groove. Produced by an injection molding method, an injection compression molding method, or a stamping method using a stamper and a thermoplastic resin, a casting method using the above stamper and a photocurable resin, a thermosetting resin, or an etching method using glass. I can do it. FIG. 3 shows an example of the manufacturing process of the core material substrate. In FIG. 3, a core substrate is obtained by performing, for example, injection molding or injection compression molding using a stamper 7 arranged by spacers 8 and resin. The core substrate used in the present invention may have an information recording pattern on only one side or may have an information recording pattern on both sides. It is possible to obtain a recordable optical disc.
本発明の光ディスクの製造方法は、上記の芯材基板への
記録膜の成膜工程と、記録膜が成膜された芯材基板を樹
脂を用いて被覆する被覆工程を含むものであり、記録膜
の或膜工程においては、従来知られている蒸着法、スパ
ッタリング法などが採用される。また、樹脂披覆工程に
おいて用いられる樹脂としては、紫外線硬化樹脂、電子
ビーム硬化樹脂、熱硬化性樹脂または熱可塑性樹脂など
が挙げられる。更に本発明の光ディスクには、第１図に
示すようにカー効果増大のための被覆膜３や反ａ・ｔ膜
などを設けることもできる。The method for manufacturing an optical disc of the present invention includes a step of forming a recording film on the core substrate described above, and a coating step of coating the core substrate on which the recording film is formed with a resin. In certain film forming steps, conventionally known vapor deposition methods, sputtering methods, etc. are employed. Further, examples of the resin used in the resin covering step include ultraviolet curable resin, electron beam curable resin, thermosetting resin, and thermoplastic resin. Furthermore, the optical disc of the present invention may be provided with a coating film 3, an anti-A/T film, etc. for increasing the Kerr effect, as shown in FIG.
（実施例）
以下、本発明を実施例により更に詳細に説明するが、本
発明はこれに限定されるものではない。(Examples) Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.
実施例
第３図に示すとおり、情報記録パターンを有する石英ガ
ラスからなるスタンバ７を２枚用い、スベーサ−８によ
りこれを配置し、エボキシ系紫外線硬化樹脂をスタンパ
間に注入し、露光硬化して第２図に示す芯材基板１を作
製した。EXAMPLE As shown in FIG. 3, two stampers 7 made of quartz glass having information recording patterns are used, placed by a spacer 8, an epoxy ultraviolet curable resin is injected between the stampers, and is cured by exposure. A core material substrate 1 shown in FIG. 2 was produced.
次に得られた芯材基板１の情報記録パターン上に、Ｔｂ
ＦｅＣｏ合金からなる光磁気記録膜２をスパッタリング
法により厚さ７００人となるように均一に成膜し、記録
膜２上にカー効果増大のための窒化ケイ素からなる無機
物被覆膜３をスパッタリング法により厚さ９００人とな
るように均一に成膜した。Next, on the information recording pattern of the obtained core substrate 1, Tb
A magneto-optical recording film 2 made of an FeCo alloy is uniformly formed to a thickness of 700 nm by sputtering, and an inorganic coating film 3 made of silicon nitride is deposited on the recording film 2 by sputtering to increase the Kerr effect. A uniform film was formed to a thickness of 900 mm.
その後、上記芯材基板を芯材とし、エボキシ系紫外線硬
化樹脂を用いて露光硬化することにより被覆して第１図
に示す本発明の光ディスクを得た。Thereafter, the above core material substrate was used as a core material, and an epoxy ultraviolet curing resin was used to cover the core material by exposure and curing to obtain an optical disk of the present invention shown in FIG. 1.
得られた光ディスクを、温度８０℃、湿度９０％の条件
下で２５００時間放置し、劣化加速試験を行った。更に
、この光ディスクを−４０℃と８０℃の条件下に各々２
時間ずつ置き、１００サイクルの熱衝撃試験を行った。The obtained optical disc was left for 2500 hours under conditions of a temperature of 80° C. and a humidity of 90%, and an accelerated deterioration test was conducted. Furthermore, this optical disc was heated twice at -40°C and 80°C.
A thermal shock test was conducted for 100 cycles at intervals of time.
その結果、いずれの試験においても光磁気記録膜の電気
信号特性の劣化は認められず、構造的な損傷あるいは機
械特性の劣化も認められなかった。As a result, no deterioration of the electrical signal characteristics of the magneto-optical recording film was observed in any of the tests, nor was any structural damage or deterioration of the mechanical properties observed.
（発明の効果）
以上述べたとおり、本発明の光ディスクはその製造工程
においても情報記録パターン及び記録膜が樹脂により密
閉され、情報記録パターン及び記録膜の物理的損傷及び
記録膜の腐食が完全に防止されることから長期信頼性に
優れたものとなる。(Effects of the Invention) As described above, in the optical disc of the present invention, the information recording pattern and recording film are sealed with resin even during the manufacturing process, and physical damage to the information recording pattern and recording film and corrosion of the recording film are completely prevented. Since this is prevented, it has excellent long-term reliability.
更に、本発明の上記光ディスクの製造法は簡便なもので
ある。Furthermore, the method for manufacturing the optical disc of the present invention is simple.
３・・・被覆膜 ５・・・有機物保護膜 ７・・・スタンパ ９・・・レプリカ基板 ４・・・樹脂 ６・・・接着剤 ８・・・スベーサー を各々示す。3...Coating film 5...Organic protection film 7... Stamper 9... Replica board 4...Resin 6...Adhesive 8...Sbaser are shown respectively.
【図面の簡単な説明】
第ＩＩ１！Ｊは本発明の光ディスクの構造の一例を示す
該略図である。
第２図は本発明において用いられる芯材基板の横造の一
例を示す図である。
第３図は本発明において用いられる芯材基板の作製過程
の一例を示す図である。
第４図および第５図は従来の光ディスクを示す図である
。[Brief explanation of the drawings] Part II1! J is a schematic diagram showing an example of the structure of the optical disc of the present invention. FIG. 2 is a diagram showing an example of horizontal construction of the core substrate used in the present invention. FIG. 3 is a diagram showing an example of the manufacturing process of the core material substrate used in the present invention. FIGS. 4 and 5 are diagrams showing conventional optical discs.
Claims (2)
る芯材基板により記録膜が担持され、該芯材基板が樹脂
により被覆されていることを特徴とする光ディスク。(1) An optical disc characterized in that a recording film is supported by a core substrate having an optically readable information recording pattern, and the core substrate is coated with a resin.
る芯材基板の作製工程と、芯材基板への記録膜の成膜工
程と、記録膜が成膜された芯材基板を樹脂を用いて被覆
する被覆工程を含んでなる特許請求の範囲第１項に記載
の光ディスクの製造方法。(2) A process for producing a core substrate having an optically readable information recording pattern, a process for forming a recording film on the core substrate, and a process for forming the core substrate on which the recording film is formed using resin. 2. The method for manufacturing an optical disc according to claim 1, comprising a coating step of coating the optical disc with a coating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1162583A JPH0329131A (en) | 1989-06-27 | 1989-06-27 | Optical disk and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1162583A JPH0329131A (en) | 1989-06-27 | 1989-06-27 | Optical disk and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0329131A true JPH0329131A (en) | 1991-02-07 |
Family
ID=15757351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1162583A Pending JPH0329131A (en) | 1989-06-27 | 1989-06-27 | Optical disk and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0329131A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08255376A (en) * | 1995-01-28 | 1996-10-01 | Samsung Electron Co Ltd | Mod and sd using integrated substrate and their manufacture |
| KR20150018889A (en) | 2012-10-09 | 2015-02-24 | 미츠비시 쥬고교 가부시키가이샤 | Method for preparing blast furnace blow-in coal |
| KR20150023765A (en) | 2012-10-09 | 2015-03-05 | 미츠비시 쥬고교 가부시키가이샤 | Method for preparing blast furnace blow-in coal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148749A (en) * | 1980-04-17 | 1981-11-18 | Pioneer Electronic Corp | Optical thin-film video disk |
| JPS56159849A (en) * | 1980-05-09 | 1981-12-09 | Toppan Printing Co Ltd | High density information recording carrier using resin cured by ultraviolet ray irradiation |
| JPS62170045A (en) * | 1986-01-22 | 1987-07-27 | Kao Corp | Optical information recording medium |
| JPS63313333A (en) * | 1987-06-17 | 1988-12-21 | Kyodo Printing Co Ltd | Production of optical recording card and transfer type optical recording medium |
-
1989
- 1989-06-27 JP JP1162583A patent/JPH0329131A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148749A (en) * | 1980-04-17 | 1981-11-18 | Pioneer Electronic Corp | Optical thin-film video disk |
| JPS56159849A (en) * | 1980-05-09 | 1981-12-09 | Toppan Printing Co Ltd | High density information recording carrier using resin cured by ultraviolet ray irradiation |
| JPS62170045A (en) * | 1986-01-22 | 1987-07-27 | Kao Corp | Optical information recording medium |
| JPS63313333A (en) * | 1987-06-17 | 1988-12-21 | Kyodo Printing Co Ltd | Production of optical recording card and transfer type optical recording medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08255376A (en) * | 1995-01-28 | 1996-10-01 | Samsung Electron Co Ltd | Mod and sd using integrated substrate and their manufacture |
| KR20150018889A (en) | 2012-10-09 | 2015-02-24 | 미츠비시 쥬고교 가부시키가이샤 | Method for preparing blast furnace blow-in coal |
| KR20150023765A (en) | 2012-10-09 | 2015-03-05 | 미츠비시 쥬고교 가부시키가이샤 | Method for preparing blast furnace blow-in coal |
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