JPS6020332A - Information carrier disk - Google Patents
Information carrier diskInfo
- Publication number
- JPS6020332A JPS6020332A JP58128606A JP12860683A JPS6020332A JP S6020332 A JPS6020332 A JP S6020332A JP 58128606 A JP58128606 A JP 58128606A JP 12860683 A JP12860683 A JP 12860683A JP S6020332 A JPS6020332 A JP S6020332A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- adhesive
- circumferential end
- recording medium
- information carrier
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 239000000853 adhesive Substances 0.000 claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000010410 layer Substances 0.000 abstract description 16
- 239000012790 adhesive layer Substances 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000002345 surface coating layer Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
- G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
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
本発明は円盤状基板を２枚貼シ合わせた情報相体ディス
クの構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the structure of an information disc made of two disc-shaped substrates bonded together.
従来例の構成とその問題点
従来よシ円盤状の透明基板の一方の面に記録媒体層を設
けたシ、所定の情報信号を凹凸ビットとして記録したも
のを、前記記録媒体層を有した面が互いに対向するよう
に、あるいは保護板を前記記録媒体層に貼り合わせてデ
ィスクを形成しその基板表面よりレーザビームを照射し
て情報の記録再生を行なう装置が開発されている。Structure of conventional example and its problems Conventionally, a recording medium layer is provided on one side of a disc-shaped transparent substrate, and a predetermined information signal is recorded as uneven bits on the surface having the recording medium layer. An apparatus has been developed in which information is recorded and reproduced by forming a disk by irradiating a laser beam from the surface of the substrate so that the disks face each other or by bonding a protective plate to the recording medium layer.
これらのディスクにおける透明基板としては、経済性、
安全性および光学的特性の点よりアクリル等の樹脂材料
を使用しているが、これらの樹脂材料は湿度、温度の変
化によって、ソリ変形を生しる性質を持っている。この
ため２枚貼り合わせ −構造のデノスクでは使用時の湿
度、温度の変化に対してひずみが発生しておシ、長期間
の湿度、温度サイクルあるいは運搬時等の急激な湿度、
温度の変化によってはがれが発生しやすい欠点がある。The transparent substrate for these disks is economical,
Resin materials such as acrylic are used from the standpoint of safety and optical properties, but these resin materials have the property of warping and deforming due to changes in humidity and temperature. For this reason, a denosk with a two-layer laminated structure is susceptible to distortion due to changes in humidity and temperature during use.
It has the disadvantage that it tends to peel off due to temperature changes.
従来のディスクの構造としては、第１図に示すようにデ
ィスク基板１の一方の面にレーザ光案内用のトラック溝
を形成する紫外線硬化樹脂層２全設け、その上に記録媒
体層３を形成している。この記録媒体層３を保護するた
め接着層４を介して保護板５ｆ：貼り合わせた構造であ
った。As shown in FIG. 1, the structure of a conventional disk is that an ultraviolet curing resin layer 2 that forms track grooves for guiding laser light is entirely provided on one surface of a disk substrate 1, and a recording medium layer 3 is formed thereon. are doing. In order to protect this recording medium layer 3, a protective plate 5f was bonded to each other with an adhesive layer 4 interposed therebetween.
しかし、このような構造の場合、前述した湿度温度の変
化によって外周端部およびセンタ穴端面部からはがれが
発生しやすい傾向があシ、一度はがれが始まると、そこ
から急速にはがれが進行し大切な情報を消滅する危険性
があった。However, in the case of such a structure, peeling tends to occur from the outer peripheral edge and the center hole edge due to the above-mentioned changes in humidity and temperature. There was a risk that important information would be lost.
発明の目的
本発明は、上記欠点を除去しようとするものであり、は
がれの発生しやすい外周端面部およびセンタ穴端面部の
貼り合わせ強度全向上させることを目的とするものであ
る・
発明の構成
本発明は、ディスク基板と保護板のそれぞれの貼り合わ
せ面側の内周端あるいは外周端面部にあらかじめ凹部を
設けて・接着剤を充填して貼シ合わせることにより、貼
９合わせ強度を向上させた信頼性の高い情報担体ディス
クである。Purpose of the Invention The present invention aims to eliminate the above-mentioned drawbacks, and aims to completely improve the bonding strength of the outer peripheral end face and the center hole end face, which are prone to peeling. The present invention improves the bonding strength by forming a recess in advance on the inner or outer edge of the bonding surface of the disk substrate and the protection plate and filling them with adhesive. It is a highly reliable information carrier disk.
実施例の説明
第２図は本発明の実施例における情報相体デノスクの一
部切欠正面断面図である。DESCRIPTION OF THE EMBODIMENTS FIG. 2 is a partially cutaway front sectional view of an information storage denosk in an embodiment of the present invention.
第２図においてディスク基板１、紫外線硬化樹脂Ｎ２、
記録媒体層３、接着層４、保護板６は第１図に示す従来
例と同様の構成であり、同一番号で示している。In FIG. 2, a disk substrate 1, an ultraviolet curing resin N2,
The recording medium layer 3, adhesive layer 4, and protection plate 6 have the same structure as the conventional example shown in FIG. 1, and are indicated by the same numbers.
６はディスクのセンタ穴、７は記録部領域の表面を保護
する表面硬化材のコーティング層で外周端にもまわり込
んで形成されている。８はディスク基板１の内周端に設
けたディスク基板側凹部、９は保護板５の内周端に設け
た保護側凹部である。6 is a center hole of the disk, and 7 is a coating layer of a surface hardening material that protects the surface of the recording area and is formed around the outer peripheral edge. Reference numeral 8 denotes a disk substrate-side recess provided at the inner peripheral end of the disk substrate 1, and 9 represents a protection-side recess provided at the inner peripheral end of the protection plate 5.
以上の構成において、接着層４はディスク基板１と保護
板５の間に全面に充填されると共に、デススフ基板側凹
部８と保護板四部９にまたがって形成されている。この
接着剤としては・硬化収縮の少ない紫外線硬化型材料を
使用している・この内周端に充填された接着層によって
それぞれの基板の内周端は強固に接着されている。尚、
センタ穴及び外周は貼シ合わせ後仕上げ加工を省なって
いる。また、外周端面部も表面硬化コーティング層７に
よって機械的に固定されている。In the above configuration, the adhesive layer 4 is filled between the disk substrate 1 and the protection plate 5 over the entire surface, and is also formed across the disk subboard-side recess 8 and the four protection plate parts 9. As this adhesive, an ultraviolet curable material with little curing shrinkage is used.The inner peripheral edges of each substrate are firmly adhered by the adhesive layer filled in the inner peripheral edges. still,
Finishing of the center hole and outer periphery is not required after lamination. Further, the outer peripheral end surface portion is also mechanically fixed by the surface hardening coating layer 7.
第３図は本発明の一実施例における情報担体ディスクの
一部切欠正面断面図である。第３図に示すようにディス
ク基板ＩＶＣ直接し−ザ光案内用トラック溝１０を形成
したもので、それぞれ内周端にディスク基板側凹部８と
保護板側凹部９を有しさらに外周端にも同様の凹部１１
を有しており・接Ｎ層４が内周端、外周端を含む全周に
充填されている。FIG. 3 is a partially cutaway front sectional view of an information carrier disk in an embodiment of the present invention. As shown in FIG. 3, a track groove 10 for guiding light is formed directly on the disk substrate IVC, and has a disk substrate side recess 8 and a protection plate side recess 9 at the inner peripheral end, and also at the outer peripheral end. Similar recess 11
- The entire circumference including the inner and outer peripheral ends is filled with the contact N layer 4.
以上の構成において、内周端は第２図で示した実施例と
同様の効果を得られるものであシ、外周端についても同
様である。尚、これらの凹部の情報担体ディスクの径方
向の厚さはあまシ薄すぎては効果がなく大体１聴程度が
適当であった、また情報相体ディスクの板厚方向の幅も
同様にせますぎれば効果はなく、情報担体ディスク基板
の半分程度に設定するのが適当であった。In the above configuration, the inner peripheral end can obtain the same effect as the embodiment shown in FIG. 2, and the same can be said of the outer peripheral end. Note that the radial thickness of the information carrier disk in these concave portions should not be too thin to be effective, so a thickness of about 1 audiometer was appropriate, and the width of the information carrier disk in the thickness direction should also be the same. If it was too large, it would have no effect, and it was appropriate to set it to about half of the information carrier disk substrate.
以上の実施例では、円盤状基板の一方にのみ記録媒体層
を設けた構造の情報担体ディスクを示したが、両方の円
盤状基板に記録媒体層を有し、互いに対向させて貼９合
わせた情報担体ディスクはもちろん所定の情報信号を凹
凸ビットとして記録した情報担体ディスク等、２枚貼シ
合わせ構造の情報担体ディスクに適用できるものである
。両方の円盤状基板にて記録媒体層を設けた場合、一方
が他方の保護板になるものである。In the above example, an information carrier disk having a structure in which a recording medium layer was provided on only one of the disk-shaped substrates was shown, but it was also possible to have a recording medium layer on both disk-shaped substrates and bond them together facing each other. The present invention can be applied not only to information carrier disks but also to information carrier disks having a two-sheet laminated structure, such as information carrier disks on which predetermined information signals are recorded as uneven bits. When recording medium layers are provided on both disc-shaped substrates, one serves as a protective plate for the other.
発明の効果
以上のように本発明によれば、最もはがれの発生しやす
いセンタ穴端面部に四部を設けて接着剤を充填し、強固
に接着することにより、はがれが発生しにくく長期にわ
たって信頼性のある情報担体ディスクを得ることができ
るものである・Effects of the Invention As described above, according to the present invention, four parts are provided on the end face of the center hole, where peeling is most likely to occur, and are filled with adhesive and bonded firmly, making it difficult for peeling to occur and ensuring long-term reliability. It is possible to obtain an information carrier disk with
第１図は従来例における情報担体ディスクの正面断面図
・第２図は本発明の一実施例における情報担体ディスク
の一部切欠正面断面図、第３図は本発明の他の実施例に
おける情報担体ディスクの一部切欠正面断面図である。
１・・・・・・ディスク基板、３・・・・・・記録媒体
層、４・・・・・・接着層、５・・・・・・保護板、６
・・・・・・センタ穴、８・・・・・・凹部。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名。FIG. 1 is a front sectional view of an information carrier disk in a conventional example, FIG. 2 is a partially cutaway front sectional view of an information carrier disk in an embodiment of the present invention, and FIG. 3 is an information carrier disk in another embodiment of the present invention. FIG. 3 is a partially cutaway front cross-sectional view of the carrier disk; DESCRIPTION OF SYMBOLS 1... Disc substrate, 3... Recording medium layer, 4... Adhesive layer, 5... Protective plate, 6
... Center hole, 8 ... Concave part. Name of agent: Patent attorney Toshio Nakao and one other person.
Claims (2)
かじめ凹部を形成したディスク基板に、同様な凹部を形
成した保護板を前記凹部が対向するように接着剤を充填
して貼り合わせた情報担体ディスク。(1) A protective plate with a similar concave portion is filled with adhesive and bonded to a disk substrate with a concave portion formed in advance at the inner peripheral end of the center hole on the surface having the recording medium layer so that the concave portions face each other. information carrier disk.
着剤を充填して貼り合わせた特許請求の範囲第１項記載
の情報担体ディスク。(2) The information carrier disk according to claim 1, wherein the entire surface including the recesses and the recording medium layer is filled with an ultraviolet curable adhesive and bonded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58128606A JPS6020332A (en) | 1983-07-14 | 1983-07-14 | Information carrier disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58128606A JPS6020332A (en) | 1983-07-14 | 1983-07-14 | Information carrier disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6020332A true JPS6020332A (en) | 1985-02-01 |
Family
ID=14988931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58128606A Pending JPS6020332A (en) | 1983-07-14 | 1983-07-14 | Information carrier disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6020332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6413035B1 (en) | 1999-01-11 | 2002-07-02 | Amada Company, Limited | Sheet working system |
-
1983
- 1983-07-14 JP JP58128606A patent/JPS6020332A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6413035B1 (en) | 1999-01-11 | 2002-07-02 | Amada Company, Limited | Sheet working system |
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