JPS60229254A - Manufacture of information recording substrate - Google Patents
Manufacture of information recording substrateInfo
- Publication number
- JPS60229254A JPS60229254A JP8523884A JP8523884A JPS60229254A JP S60229254 A JPS60229254 A JP S60229254A JP 8523884 A JP8523884 A JP 8523884A JP 8523884 A JP8523884 A JP 8523884A JP S60229254 A JPS60229254 A JP S60229254A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- solvent
- adhesive agent
- information recording
- spacers
- 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
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、たとえばレーザ光等の光を集束することＫよ
って情報の書き込み、読み出しが行なわれる情報記録基
板の製造方法に関し、特にエアーサンドイッチ型ディス
クの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing an information recording substrate on which information is written and read by focusing light such as a laser beam, and in particular to an air sandwich type substrate. The present invention relates to a method for manufacturing a disc.
（従来技術とその問題点）
一般に光ビデオディスクや光メモリなどに用いられる円
盤状の情報記録基板は通常第１図に示すような構造をな
している。すなわち光信号を透過する為に例えばアクリ
ル樹脂やポリカーボネート等の透明なプラスチック基板
１及び１′の表面に薄膜の記録媒体２及び２′が塗布さ
れ、該記録媒体２及び２′が互いに対向するように２枚
の基板１及び１′を上下にし、内周部及び外周部にプラ
スチック等のスペーサ３及び３′を介して接合し、前記
記録層２及び２′に中空部４を形成している。(Prior Art and its Problems) A disk-shaped information recording substrate generally used for optical video disks, optical memories, etc. usually has a structure as shown in FIG. That is, in order to transmit optical signals, thin film recording media 2 and 2' are coated on the surfaces of transparent plastic substrates 1 and 1' made of, for example, acrylic resin or polycarbonate, and the recording media 2 and 2' are arranged to face each other. Two substrates 1 and 1' are placed one above the other, and are bonded to the inner and outer peripheries with spacers 3 and 3' made of plastic, etc., forming hollow parts 4 in the recording layers 2 and 2'. .
従来このようにスペーサを介するエアーサンドイワナ構
造の情報記録基板の製造方法に関しては、常温硬化型、
熱硬化型の接着剤を用いて貼り合わせるのが一般的であ
るが、近年硬化時間が大幅に短縮できる紫外線硬化型の
接着が用いられるようになった。Conventionally, the methods for manufacturing information recording substrates with air sand char structure using spacers include room-temperature curing type,
It is common to use a thermosetting adhesive to bond them together, but in recent years, ultraviolet curing adhesives have come into use, which can significantly shorten the curing time.
しかしながらこのような紫外線硬化型の接着剤は、通常
無溶剤タイプとうたっているが、通常の製造方法におい
て主成分の生成時に溶剤を使用する為、製造後の接着剤
には数パーセントの溶剤を含有している。この為紫外線
照射によシ接着剤が硬化する際発生するガス中には数千
〜数百ＰＰＭの例えばトルエンやベンゼン等の溶剤を含
んでいる。However, although such UV-curable adhesives are usually advertised as solvent-free, in the normal manufacturing method, a solvent is used during the production of the main component, so the adhesive after manufacturing contains a few percent of solvent. are doing. For this reason, the gas generated when the adhesive is cured by ultraviolet irradiation contains several thousand to several hundred ppm of a solvent such as toluene or benzene.
このようなガスが中空部４に密封される為、時間の経過
とともに記録層２及び２′と化学反応を起こし、劣化を
まねくというような問題があった。Since such gas is sealed in the hollow portion 4, there is a problem in that a chemical reaction occurs with the recording layers 2 and 2' over time, leading to deterioration.
（発明の目的）
本発明はこのような従来の欠点を除去せしめて、スペー
サと基板の接合に完全無溶剤型の紫外線硬化型接着剤を
使用した情報記録基板の製造方法を提供するものである
。(Object of the Invention) The present invention eliminates such conventional drawbacks and provides a method for manufacturing an information recording substrate using a completely solvent-free ultraviolet curing adhesive for bonding a spacer and a substrate. .
（発明の構成）
本発明によれば光によって情報の書き込み、読み出しが
行なわれる記録面を有する二枚のディスク基板の内外局
部を内周スペーサと外周スペーサを間に挾んで平行に貼
り合わせたエアーサンドイッチ構造の情報記録基板の製
造方法において、前記基板とスペーサを貼り合わせる手
段として完全無溶剤型の紫外線硬化型接着剤を用いたこ
とを特徴とする情報記録基板の製造方法が得られる。(Structure of the Invention) According to the present invention, the inner and outer parts of two disk substrates each having a recording surface on which information is written and read by light are bonded together in parallel with an inner circumferential spacer and an outer circumferential spacer sandwiched therebetween. A method for manufacturing an information recording substrate having a sandwich structure is obtained, characterized in that a completely solvent-free ultraviolet curable adhesive is used as a means for bonding the substrate and the spacer together.
（実施例）
以下本発明の実施例について図面を参照して詳細に説明
する。第２図は本発明の情報記録基板の製造方法の一実
施例を示す断面図であり、片面に記録層２を有する透明
なプラスチック基板１を治具５に固定する。次に基板１
の内外周部面にエンチオール系の接着剤を滴下し、スペ
ーサ３及び３′を接合すると接着層６及び７が形成され
る。次に上記と同様にスペーサ３及び３′上に接着剤を
滴下し上部から片面に記録層２′を有する透明なプラス
チック基板１′を接合すると、それぞれ接着層６′及び
７′が形成される。この状態で上部の紫外線照射ランプ
８よシ紫外光を数十秒間照射すると接着層６ｐ６′及び
７ｊ７′が硬化し、上下基板１及び１′はスペーサ３及
び３′を介して密閉中空部４を形成する。(Example) Examples of the present invention will be described in detail below with reference to the drawings. FIG. 2 is a cross-sectional view showing an embodiment of the method for manufacturing an information recording substrate of the present invention, in which a transparent plastic substrate 1 having a recording layer 2 on one side is fixed to a jig 5. As shown in FIG. Next, board 1
Adhesive layers 6 and 7 are formed by dropping an enethiol-based adhesive onto the inner and outer circumferential surfaces of the spacers 3 and 3' and bonding the spacers 3 and 3' together. Next, in the same manner as above, adhesive is dropped onto the spacers 3 and 3' and a transparent plastic substrate 1' having a recording layer 2' on one side is bonded from above, thereby forming adhesive layers 6' and 7', respectively. . In this state, when the upper ultraviolet irradiation lamp 8 is irradiated with ultraviolet light for several tens of seconds, the adhesive layers 6p6' and 7j7' are cured, and the upper and lower substrates 1 and 1' are closed to the sealed hollow part 4 via the spacers 3 and 3'. Form.
（発明の効果）
以上説明した如く本発明の情報記録基板の製造方法によ
れば、記録層を有する２枚の基板とスペーサとを接着す
るための紫外線硬化型接着剤として完全無溶剤のエンチ
オール系接着剤を用いることにより接着剤が硬化時に発
生するガス中には全く溶剤が含まれない為記録層が安定
した状態で保持できる為、安定かつ長寿命の情報記録基
板を得ることができる。(Effects of the Invention) As explained above, according to the method for manufacturing an information recording substrate of the present invention, a completely solvent-free enethiol-based adhesive is used as an ultraviolet curable adhesive for bonding two substrates having a recording layer and a spacer. By using an adhesive, the gas generated when the adhesive is cured does not contain any solvent, so the recording layer can be maintained in a stable state, making it possible to obtain a stable and long-life information recording substrate.
第１図は従来の情報記録基板の一例の断面図、第２図は
本発明の一実施例を示す断面図である。
図において、
１及び１′は基板、２及び２′は記録層、３及び３′は
スペーサ、４は中空部、５は治具、６ｐ６′及び７ｊ７
′は接着層、８は紫外線照射ランプをそれぞれ示す。
オ １ 図
オ ２ 図FIG. 1 is a sectional view of an example of a conventional information recording substrate, and FIG. 2 is a sectional view of an embodiment of the present invention. In the figure, 1 and 1' are substrates, 2 and 2' are recording layers, 3 and 3' are spacers, 4 is a hollow part, 5 is a jig, 6p6' and 7j7
'' indicates an adhesive layer, and 8 indicates an ultraviolet irradiation lamp. O 1 Figure O 2 Figure
Claims (1)
面を有する二枚のディスク基板の内外周部を内周スペー
サと外周スペーサを間に挾んで平行に貼り合わせたエア
ーサンドイッチ構造の情報記録基板の製造方法において
、前記基板とスペーサを貼り合わせる手段として完全無
溶剤型の紫外線硬化型接着剤を用いたことを特徴とする
情報記録基板の製造方法。A method for manufacturing an information recording substrate with an air sandwich structure in which the inner and outer peripheries of two disk substrates each having a recording surface on which information is written and read by light are laminated in parallel with an inner spacer and an outer spacer sandwiched between them. A method for manufacturing an information recording substrate, characterized in that a completely solvent-free ultraviolet curable adhesive is used as a means for bonding the substrate and spacer together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8523884A JPS60229254A (en) | 1984-04-27 | 1984-04-27 | Manufacture of information recording substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8523884A JPS60229254A (en) | 1984-04-27 | 1984-04-27 | Manufacture of information recording substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60229254A true JPS60229254A (en) | 1985-11-14 |
Family
ID=13852978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8523884A Pending JPS60229254A (en) | 1984-04-27 | 1984-04-27 | Manufacture of information recording substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60229254A (en) |
-
1984
- 1984-04-27 JP JP8523884A patent/JPS60229254A/en active Pending
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