JPS62243145A - Manufacture of optical disk - Google Patents

Manufacture of optical disk

Info

Publication number
JPS62243145A
JPS62243145A JP61086555A JP8655586A JPS62243145A JP S62243145 A JPS62243145 A JP S62243145A JP 61086555 A JP61086555 A JP 61086555A JP 8655586 A JP8655586 A JP 8655586A JP S62243145 A JPS62243145 A JP S62243145A
Authority
JP
Japan
Prior art keywords
ring
shape
periphery
protrusion
memory material
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
Application number
JP61086555A
Other languages
Japanese (ja)
Inventor
Masafumi Kobayashi
雅史 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP61086555A priority Critical patent/JPS62243145A/en
Publication of JPS62243145A publication Critical patent/JPS62243145A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

PURPOSE:To obtain a junction being uniform and strong extending over the whole periphery of a junction part without using a special device, by simple equipment and process, by joining two pieces of disks by performing a specific working to both joint surface sides. CONSTITUTION:Ring-shaped projections 3, 3'; 4, 4' are provided on the inside and outside peripheral parts of both joint surface sides of two pieces of disks 1, 1', a ring shape being a little smaller than the outside periphery of the inside peripheral part projections 3, 3' is stored, and thereafter, working is executed and a ring 5 made of a shape memory material being larger than the outside periphery of the inside peripheral part projections 3, 3', and a ring shape being a little larger than the inside periphery of the outside peripheral part projections 4, 4' are stored. Thereafter, working is executed and a ring 6 made of a shape memory material being smaller than inside periphery of the outside peripheral part projections 4, 4' is placed and superposed on the joint surface side of two pieces of optical disks 1, 1', and joined by making the rings 5, 6 execute a shape recovery. In such a way, a uniform and storing junction is obtained by simple equipment and process, and also, a metallic mold used for forming a disk can also be formed into a simple shape.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、情報信号をレーザ光などの光学的手段を用い
て読み書きする2枚貼9合わせの光ディスクQJfA逍
方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for playing a two-ply optical disc QJfA in which information signals are read and written using optical means such as laser light.

〔従来の技術〕[Conventional technology]

従来、@開昭60−115346号公報に示されるよう
に2枚のディスクを超音波溶層法により接合する方法が
知られていた。
Conventionally, a method has been known in which two disks are bonded together by an ultrasonic lamination method, as shown in @Kokai No. 115346/1983.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、従来の接合方法では、超音波振動発生l!瞳が
必要であフ、1t、超酔波損勧によって熱′R4融した
部分が超音波振動を吸収してしまい、広い範囲の溶着が
行えないばかりか、超音波振@は方向性をもっているた
め均一な接合が雌しいという問題点を有していた@ そこで本発明は従来のこのような問題点を解決する几め
、特別な装晴を用いずに接合部の全周にわ几って均一で
強固な接合を簡11Lな設備と工程で得ることを目的と
している。
However, with conventional bonding methods, ultrasonic vibrations occur l! I need a pupil, 1t, the part that melts due to the ultrasonic waves absorbs the ultrasonic vibration, and not only can weld over a wide range not be possible, but the ultrasonic vibration has directionality. Therefore, the present invention has a problem in that it is difficult to bond uniformly. Therefore, the present invention is an attempt to solve this problem with the conventional method, and it is possible to bond uniformly around the entire circumference of the joint without using any special coating. The aim is to obtain uniform and strong joints using simple 11L equipment and processes.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の光ディスクの製造方法は、尤によって情報の読
み書きが行われる2枚貼り合わせの光ディスクのI11
!i方法において、2枚のディスク双方の接合面側の内
外周部にリング状の突起を設け、内周部突起の外周より
もわずかに小さなリング形状を記憶させた後、 7JO
工して前記内周部突起の外周よりも大きくし定形状記憶
材料製リングと、外周部突起の内周よりもわずかに大き
なリング形状を記憶させた後、加工して前記外周部突起
の内周よりも小さくし定形状記憶材料製リングを、接合
する前記2枚の光ディスクの接合面側に配置して尤ディ
スクを重ね合わせ、前記形状起用材料製リングに形状回
復を行わせることによって2枚のディスクを接合するこ
とを特徴とする。
The optical disk manufacturing method of the present invention is particularly suitable for I11 of a two-piece optical disk on which information is read and written.
! In the i method, ring-shaped protrusions are provided on the inner and outer peripheries of the joint surfaces of both the two disks, and after memorizing a ring shape that is slightly smaller than the outer periphery of the inner periphery protrusions, 7JO
A ring made of a fixed shape memory material is machined to be larger than the outer circumference of the inner circumference protrusion, and a ring shape slightly larger than the inner circumference of the outer circumference protrusion is memorized, and then the inner circumference of the outer circumference protrusion is machined. A ring made of a shape-memory material and made smaller than the circumference is placed on the joint surface side of the two optical discs to be joined, the two discs are overlapped, and the ring made of the shape-based material recovers the shape. It is characterized by joining two discs.

〔実施例〕〔Example〕

以下に不発明の実施例を図面にもとづいて説明する。第
1[F]は、記録1脅が互いに対向し、その記録層間に
中空部を有するエアーサンドイッチ横道の光ディスクに
不発明の接合方法を用いたものであり、1及び1′はポ
リメチルメタクリレ−)(PMMA)などの透明な甘酸
樹脂製のディスク基盤であり、2及び2′は1及び1°
′上に形成された情報記@+1.s及び3′は内周部突
起、4及び4′は外周部突起である。5及び6は形状記
憶材料製リングであり、形状回復させt事によりそれぞ
れ5及び5′と4及び4′に係合して1と1′を接合し
ている。
Embodiments of the present invention will be described below based on the drawings. 1 [F] is an air sandwich type optical disc in which recording layers face each other and has a hollow space between the recording layers, using an uninvented joining method; 1 and 1' are made of polymethylmethacrylate; -) (PMMA) or other transparent sweet acid resin disc base, 2 and 2' are 1 and 1°
'Information record formed on @+1. s and 3' are inner peripheral projections, and 4 and 4' are outer peripheral projections. Rings 5 and 6 are made of shape memory material and are engaged with 5 and 5' and 4 and 4', respectively, to join 1 and 1' by restoring their shape.

第3図はリング5及び6の形状回復前の状態であり、デ
ィスクIFiディスク1′の上に重ね甘わせであるだけ
である。リング5及び6をNi−Tiなどの形状記憶合
金製とした場会、リング5及び6の形状回復温度を光デ
ィスクの使用温度よりも低く設足すれば、リング5及び
6は光ディスクの使用温度範囲で最も弾性係数が大とな
り、ディスク1と1′の接合は強固となる。このために
は第2図に示す組み立ては光デイスク使用温度よりも低
温で行う。
FIG. 3 shows the state of the rings 5 and 6 before their shape has been restored, and they are simply stacked on the disk IFi disk 1'. If the rings 5 and 6 are made of shape memory alloy such as Ni-Ti, if the shape recovery temperature of the rings 5 and 6 is set lower than the operating temperature of the optical disk, the rings 5 and 6 will be within the operating temperature range of the optical disk. The elastic modulus is the largest at this point, and the bond between the disks 1 and 1' becomes strong. To this end, the assembly shown in FIG. 2 is performed at a temperature lower than the operating temperature of the optical disk.

第3図は、本発明の他の実m例を示すもので。FIG. 3 shows another example of the present invention.

7及び8は粘着性接着剤であり、リング5及び6と突起
3及び4との接合をより完全なものとし。
7 and 8 are tacky adhesives, which make the bonds between the rings 5 and 6 and the protrusions 3 and 4 more complete.

記録層間の中空部の気密性を高める働きをする。It works to improve the airtightness of the hollow space between recording layers.

9及び9′は内周部突起に設けた溝、IQ及び10′は
外周部突起に設は九構であシ、それぞれリング5及び6
と係合し、ディスク1と1′を接合している。ディスク
の接合は、ディスク1及び1′の内周部突起の外周及び
外周部突起の内周に粘着性接着剤を塗布し、形状回復前
のリング5及び6を2枚のディスク間にセットし、リン
グ5及び6に形状回復を行わせて行う。
9 and 9' are grooves provided on the inner protrusion, IQ and 10' are provided on the outer protrusion, and rings 5 and 6 are provided respectively.
and joins the discs 1 and 1'. To join the disks, adhesive adhesive is applied to the outer periphery of the inner periphery protrusion and the inner periphery of the outer periphery protrusion of the disks 1 and 1', and the rings 5 and 6, which have not yet recovered their shape, are set between the two disks. , by causing the rings 5 and 6 to recover their shapes.

以上のような実m例において、リング5&び6の断面形
状がV字形及びコの字形の場会を示したが、ディスク1
と11を接゛会できる形状であればどのような形状でも
よい。また、エアーサンドイッチ型以外の2枚貼合わせ
の光デイスクの元ディスクにも適用できることは言うま
でもない。
In the above examples, the cross-sectional shapes of the rings 5 and 6 are V-shaped and U-shaped.
Any shape may be used as long as it can connect 11 and 11. It goes without saying that the present invention can also be applied to the original disk of a two-layer optical disk other than the air sandwich type.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によれば、超音波発生製電な
どの特別な装置#を用いることなく均一で強固な接合が
簡単な設備と工程で得られるのみならず、接@一部の形
状の自由度が大きい為、ディスク製造に用いる金型も簡
単な形状にすることができ、経済的にも有利なものとす
ることができる効果を有する。
As explained above, according to the present invention, not only can uniform and strong bonding be obtained with simple equipment and processes without using special equipment such as ultrasonic generation electric manufacturing, but also the shape of the bonded part can be Since the degree of freedom is large, the mold used for manufacturing the disc can also be made into a simple shape, which has the effect of making it economically advantageous.

【図面の簡単な説明】[Brief explanation of drawings]

第1因は1本発明による光ディスクの接会購造の実施例
を示す縦断面図、第2図は、ディスクの接合に用いるリ
ングの形状回復前の状態を示す縦断面図、第5図は、不
発明の他の実施例を示す縦断面図。 1・・・ディスク基盤 2・・・情報記録1− 5・・・形状記憶材料製リング 7・・・粘着性接着剤 以   上
The first factor is 1. Fig. 2 is a longitudinal sectional view showing an embodiment of optical disc joining and purchasing according to the present invention. Fig. 2 is a longitudinal sectional view showing the state before shape recovery of the ring used for joining the discs. Fig. 5 is , a longitudinal sectional view showing another embodiment of the invention. 1... Disc base 2... Information recording 1-5... Ring made of shape memory material 7... Adhesive adhesive or more

Claims (1)

【特許請求の範囲】[Claims] 光によつて情報の読み書きが行われる2枚貼り合わせの
光デイスクの製造方法において、2枚のディスク双方の
接合面側の内外周部にリング状の突起を設け、内周部突
起の外周よりもわずかに小さなリング形状を記憶させた
後、加工して前記内周部突起の外周よりも大きくした形
状記憶材料製リングと、外周部突起の内周よりもわずか
に大きなリング形状を記憶させた後、加工して前記外周
部突起の内周よりも小さくした形状記憶材料製リングを
、接合する前記2枚の光ディスクの接合面側に配置して
光ディスクを重ね合わせ、前記形状記憶材料製リングに
形状回復を行わせることによつて2枚のディスクを接合
することを特徴とする光ディスクの製造方法。
In a manufacturing method for a two-disk bonded optical disk in which information is read and written using light, ring-shaped protrusions are provided on the inner and outer peripheries of the joint surfaces of both disks, and a ring-shaped protrusion is provided on the outer periphery of the inner periphery protrusion. After storing a slightly smaller ring shape, a ring made of a shape memory material was processed to be larger than the outer circumference of the inner protrusion, and a ring shape slightly larger than the inner circumference of the outer protrusion was memorized. After that, a shape-memory material ring that has been processed to be smaller than the inner periphery of the outer peripheral protrusion is placed on the joining surface side of the two optical discs to be joined, and the optical discs are overlapped, and the shape-memory material ring is A method for manufacturing an optical disc, characterized by joining two discs by performing shape recovery.
JP61086555A 1986-04-15 1986-04-15 Manufacture of optical disk Pending JPS62243145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61086555A JPS62243145A (en) 1986-04-15 1986-04-15 Manufacture of optical disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61086555A JPS62243145A (en) 1986-04-15 1986-04-15 Manufacture of optical disk

Publications (1)

Publication Number Publication Date
JPS62243145A true JPS62243145A (en) 1987-10-23

Family

ID=13890252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61086555A Pending JPS62243145A (en) 1986-04-15 1986-04-15 Manufacture of optical disk

Country Status (1)

Country Link
JP (1) JPS62243145A (en)

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