JPS5897143A - Recording and reproducing disc - Google Patents
Recording and reproducing discInfo
- Publication number
- JPS5897143A JPS5897143A JP56192915A JP19291581A JPS5897143A JP S5897143 A JPS5897143 A JP S5897143A JP 56192915 A JP56192915 A JP 56192915A JP 19291581 A JP19291581 A JP 19291581A JP S5897143 A JPS5897143 A JP S5897143A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- glass substrate
- cut surface
- glass
- reproducing
- 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
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、加工ビーム照射で記録用部材に孔を形成する
ことなどによって記録を行なう、ディジタル光ディスク
等の高密度記録ディスクに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-density recording disk, such as a digital optical disk, in which recording is performed by forming holes in a recording member by irradiating a processing beam.
記録再生ディスクに用いられる基板は、記録膜の劣化を
防ぐ等の目的からガラスが用いられている。このガラス
基板は、厚さ１−〜２−の板ガラスを円板状に切断し、
必要に応じて切断面を研削１面取シし友ものを化学強化
したものが用いられる。この基板を用いて記録再生ディ
スクを組み立てた場合、ガラス基板の切断部からガラス
の小破片が発生してガラス基板の表面を傷つけたシ、ま
た衝撃等によって切断部端面にクラックが生じたり、さ
らに記録再生ディスクをカートリッジ等のケースに収納
し几場合忙切断部端面とケースがこすれて塵埃を発生し
。Glass is used as a substrate for recording/reproducing disks in order to prevent deterioration of the recording film. This glass substrate is made by cutting a 1- to 2-thick plate glass into a disk shape.
If necessary, the cut surface may be ground, chamfered, and chemically strengthened. When a recording/reproducing disk is assembled using this substrate, small pieces of glass may be generated from the cut portion of the glass substrate, damaging the surface of the glass substrate, or cracks may occur on the end surface of the cut portion due to impact, etc. When a recording/reproducing disc is stored in a case such as a cartridge, the end surface of the busy cut part rubs against the case, generating dust.
記録再生信号のエラーを生じる恐れがある。This may cause errors in recording/reproducing signals.
本発明の目的とするとξろは、上記の如き問題点を除去
することであシ、ガラス基板の切断部端面からガラスの
小破片や塵埃を発生し−ｈｌｙ、切断部端面にクラック
を生じたシすることのない記録再生ディスクを提供する
ことにある。The purpose of the present invention is to eliminate the above-mentioned problems, such as the generation of small glass fragments and dust from the cut end of the glass substrate, and the occurrence of cracks on the cut end of the glass substrate. The purpose of the present invention is to provide a recording/playback disc that does not cause any damage.
本発明の特徴とするところは、組立後の記録再生ディス
クのガラス基板の切断部端面に保護層を設けることであ
る。A feature of the present invention is that a protective layer is provided on the cut end face of the glass substrate of the recording/reproducing disk after assembly.
次に本発明の実施例につき図面を用いて詳細に説明する
。Next, embodiments of the present invention will be described in detail using the drawings.
第１図は本発明の一実施例である記録再生ディスクの断
面図を示し、第２図は第１図円内の拡大詳細図である。FIG. 1 shows a sectional view of a recording/reproducing disk according to an embodiment of the present invention, and FIG. 2 is an enlarged detailed view of the circle in FIG. 1. FIG.
ガラス基板１０片面には樹脂層２および薄膜５が形成さ
れている。ガラス基板１は薄膜５を内側にして内径スペ
ーサ４および外径スペーサ５を介して他の同様の基板と
接着剤８Ｖｃよシ接着されている。ガラス基板１の切断
部端面７および外径スペーサ５の外側には保護層６が接
着されている。保護層６け、エポキシ樹脂やけい素樹脂
、フェノール樹脂等の樹脂を接着したシ。A resin layer 2 and a thin film 5 are formed on one side of the glass substrate 10. The glass substrate 1 is bonded to another similar substrate with an adhesive 8Vc via an inner diameter spacer 4 and an outer diameter spacer 5, with the thin film 5 facing inside. A protective layer 6 is adhered to the cut end surface 7 of the glass substrate 1 and the outside of the outer diameter spacer 5. 6 protective layers, glued with resin such as epoxy resin, silicone resin, phenolic resin, etc.
ま九は、アルミニウム、銅などの金属な溶射等によりて
接着して形成することができる。また、樹脂または金属
のリングを接着剤等を用いて取付けてもよい。ガラス基
板１の破断部端面７を保護層６で覆うことにより、破断
部端面７は直接外部の物体と接触することがなくなるの
で、ガラスの小破片や塵埃を発生することがなく、また
＃１’Ｙ受けてもクジツクが発生しにくい。The top plate can be formed by adhering a metal such as aluminum or copper by thermal spraying or the like. Alternatively, a resin or metal ring may be attached using an adhesive or the like. By covering the end face 7 of the broken part of the glass substrate 1 with the protective layer 6, the end face 7 of the broken part does not come into direct contact with external objects, so small glass fragments and dust are not generated, and #1 Even if you receive 'Y', it is difficult to cause a crack.
以上述べ念如き構成であるから本発明にあっては、次の
如き効果が得られる。Since the configuration is as described above, the present invention provides the following effects.
１、 ガラス基板の破１ｆｒ３６１１１１面χ保護層で
覆ったので、破断部端面からガラスの小破片が発生２、
ガラス基板の破断部端面′ｆ：保護層で覆ったので、
破断部端面とディスクケース等の摩擦により塵埃が発生
しない。1. Since the broken glass substrate 1fr361111 surface was covered with a protective layer, small pieces of glass were generated from the edge of the broken part.2.
Fractured end face 'f of glass substrate: Since it was covered with a protective layer,
No dust is generated due to friction between the edge of the broken part and the disc case, etc.
５、 ガラス基板の破断部端面を保ａ層で覆りたので、
衝撃等により破断部端面にクラックが生じにくい。5. Since the edge of the broken part of the glass substrate was covered with an a-retention layer,
Cracks are less likely to occur on the end face of the fractured part due to impact, etc.
第１図は本発明の一実施列を示す記録再生ディスクの断
面図、第２図はその一部の拡大図。
符号の説明
１・・・ガラス基板、 ２・・・樹脂ノー。
ろ・・・記録膜、 ４・・・内径スペーサ。
５・・・外径スペーサ、 ６・・・保護層、７・・・切
断部端面、 ８・・・接尋着剤。FIG. 1 is a sectional view of a recording/reproducing disk showing one embodiment of the present invention, and FIG. 2 is an enlarged view of a portion thereof. Explanation of symbols 1...Glass substrate, 2...Resin no. ro...recording film, 4...inner diameter spacer. 5... Outer diameter spacer, 6... Protective layer, 7... End face of cut portion, 8... Adhesive.
Claims (1)
により信号が記録される薄膜が形成され、前記薄膜の面
を内側にして一定の間隔をおいて他の基板と固定されて
なるディスクにおいて前記ガラス基板の切断部端面に保
護層を設けたことを特徴とする記録再生ディスク。A thin film on which a signal is recorded is formed by a processing beam on one side of a glass substrate cut into a desired shape, and the disk is fixed to another substrate at a fixed interval with the thin film side facing inside. A recording/reproducing disk characterized in that a protective layer is provided on the cut end face of a glass substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56192915A JPS5897143A (en) | 1981-12-02 | 1981-12-02 | Recording and reproducing disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56192915A JPS5897143A (en) | 1981-12-02 | 1981-12-02 | Recording and reproducing disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5897143A true JPS5897143A (en) | 1983-06-09 |
Family
ID=16299089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56192915A Pending JPS5897143A (en) | 1981-12-02 | 1981-12-02 | Recording and reproducing disc |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5897143A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60113343A (en) * | 1983-11-24 | 1985-06-19 | Fujitsu Ltd | Optical disk |
| JPS61174027U (en) * | 1985-04-16 | 1986-10-29 |
-
1981
- 1981-12-02 JP JP56192915A patent/JPS5897143A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60113343A (en) * | 1983-11-24 | 1985-06-19 | Fujitsu Ltd | Optical disk |
| JPH0430651B2 (en) * | 1983-11-24 | 1992-05-22 | ||
| JPS61174027U (en) * | 1985-04-16 | 1986-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4334233A (en) | Optical recording element and its manufacturing method | |
| US4331966A (en) | Information storage device and method of forming same | |
| JPS5897143A (en) | Recording and reproducing disc | |
| JP3248309B2 (en) | optical disk | |
| JPS61142543A (en) | Optical disk | |
| JPS58196636A (en) | Recording and reproducing disk of digital signal | |
| JPS61198445A (en) | Optical disc | |
| JPS59175046A (en) | Information carrier disk | |
| JPS58175154A (en) | Optical recording and reproducing disc | |
| JPS58137149A (en) | Optical recording and reproducing dics | |
| JPH01102753A (en) | Optical disk | |
| JPS60243835A (en) | Optical recording carrier | |
| JPS605439A (en) | Disc for optical information carrier | |
| JP2504117B2 (en) | Optical disc bonding method | |
| JP2708443B2 (en) | Optical disk substrate | |
| JPS6450250A (en) | Optical disk substrate | |
| JPH1011803A (en) | Optical information recording medium | |
| JPS62129955A (en) | Optical disk | |
| JPH02185777A (en) | Optical information medium | |
| JPS60256937A (en) | Optical information carrier disc | |
| JPS60256932A (en) | Optical information carrier disc | |
| JPS5971145A (en) | Information recording medium | |
| JPS61168149A (en) | Information recording disk | |
| JPS62128036A (en) | Information recording medium | |
| JPS59171048A (en) | Information recording medium |