JPS58203645A - Optical disc joining method - Google Patents

Optical disc joining method

Info

Publication number
JPS58203645A
JPS58203645A JP57084708A JP8470882A JPS58203645A JP S58203645 A JPS58203645 A JP S58203645A JP 57084708 A JP57084708 A JP 57084708A JP 8470882 A JP8470882 A JP 8470882A JP S58203645 A JPS58203645 A JP S58203645A
Authority
JP
Japan
Prior art keywords
adhesive
disc
replica
protuberance
protrusion
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
JP57084708A
Other languages
Japanese (ja)
Inventor
Yoshie Kodera
小寺　喜衛
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP57084708A priority Critical patent/JPS58203645A/en
Publication of JPS58203645A publication Critical patent/JPS58203645A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B29C66/452—Joining of substantially the whole surface of the articles the article having a disc form, e.g. making CDs or DVDs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B29L2017/005—CD''s, DVD''s

Abstract

PURPOSE:To perfectly prevent deviation and deformation at high temps, by forming a very small protuberance on part of the inner circumference of a disc, sticking the disc temorarily with a sticky adhesive, then, applying ultrasonic vibraion to the part corresponding to the protuberance to thermally melt it. CONSTITUTION:A metallic vapor deposition film 3 and a deposition film protecting film are formed, and both 1a and 1c are stuck with a sticky adhesive agent, such as butyl acrylate adhesive or thermoplastic rubber type hot melt adhesive 4a to form a disc. At that time, the thickness of the adhesive is set so as not to exceed the height of the protuberance. Accordingly, the adhesive 4a can be applied only to the replica 1a. The disc thus stuck is joined by the method using ultrasonic vibration to form a structure joined in one body.

Description

【発明の詳細な説明】 本発明は、透明な合成樹脂板に形成された凹凸形状のピ
ットを信号記録媒体とする光方式ビイチオ。ディスクの
接合方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is an optical system that uses uneven pits formed on a transparent synthetic resin plate as a signal recording medium. This invention relates to a method for joining disks.

光方式のビイチオ６デイスクは、ビイデオ侶号の記録媒
体となる凹状の微少ビット（深さ１１μ幅０．４μ、良
さ０．５〜２μ）を持ったポリメチルメタアクリレート
（ＰＭＭＡ）などの透明な合成樹脂製の射出成形品から
なっている。この射出成形品をレプリカと称す。第１図
は従来の接合方法を説明する図である。ここで、ビイデ
オディスクの構造は、第１図（ａ）に示す如く射出成形
されたレプリカ１ａのピット２側の面に第１図（ｂ）に
示す如く、光反射膜として、アルミニウムなどの金属蒸
着膜５を約１０００１の厚さで一様に形成し、さらに、
第１図（ｃ）に示す如く蒸着膜の損傷を防ぐため、高分
子性の保饅膜（図示せず）と接着剤４を塗布し、かかる
後に第１図（ｄ）に示す如く同様にして得た他方のレプ
リカ１ｂと貼り合せた接合構造となって゛いる。The optical type V-Idio 6 disc is made of transparent material such as polymethyl methacrylate (PMMA) with concave minute bits (depth 11 microns, width 0.4 microns, thickness 0.5-2 microns), which serves as the video recording medium. It consists of an injection molded product made of synthetic resin. This injection molded product is called a replica. FIG. 1 is a diagram illustrating a conventional joining method. Here, the structure of the video disc is such that, as shown in FIG. 1(b), a light reflecting film such as aluminum is coated on the surface of the pit 2 side of the replica 1a which is injection molded as shown in FIG. 1(a). A metal vapor deposition film 5 is uniformly formed to a thickness of about 10,001 mm, and further,
As shown in FIG. 1(c), in order to prevent damage to the deposited film, a polymeric protective film (not shown) and adhesive 4 are applied, and then the same process is applied as shown in FIG. 1(d). It has a bonded structure in which it is bonded to the other replica 1b obtained by the process.

光方式ビイチオ。ディスクは、４００〜１８００ＲＰＭ
の高速回転状態でビイデオ信号の再生を行なうため、デ
ィスク面が平坦であることが必要とされる。Light method Biichio. Disc 400-1800RPM
Since the video signal is reproduced while the disc is rotating at high speed, the disc surface must be flat.

一般に、ビイチオ。ディスクは厚さが約２．５ｍと薄く
、かつ直径３００鴫　にもなると自重によるたわみが発
生し、かつレプリカ自身がもつ成形歪などから、静的状
態で平坦度を確保しＫくい。。In general, Biichio. The disk is thin, about 2.5 meters thick, and when it reaches a diameter of 300 mm, it bends due to its own weight, and due to molding distortion of the replica itself, it is difficult to ensure flatness in a static state. .

このため、高速回転状態で容易に平坦度が得られるよう
に、接着剤の弾性率をＰＭＭＡの弾性率よシも下げたも
のを使用する必要がある。Therefore, it is necessary to use an adhesive whose elastic modulus is lower than that of PMMA so that flatness can be easily obtained under high-speed rotation conditions.

このような目的で選定される接着剤はホットメルト型接
着剤が適しているが、高温使用時（例えば６０℃雰囲気
中）ではレプリカ１ａと１ｂ間にズレ変形を発生するな
どの欠点があった。又この高温時ズレ変形を防ぐため、
両面粘着テープの使用、およびゴム系接着剤の使用も考
えられるが、生産性、および後者では有機溶剤の完全揮
発が困難などの欠点があった。Hot-melt adhesives are suitable as adhesives for this purpose, but they have drawbacks such as misalignment and deformation between replicas 1a and 1b when used at high temperatures (e.g. in an atmosphere of 60°C). . In addition, to prevent misalignment and deformation at high temperatures,
The use of double-sided adhesive tape and the use of rubber-based adhesives have been considered, but the latter has disadvantages such as productivity and difficulty in completely volatilizing the organic solvent.

本発明の目的は上記従来の接着構造の欠点をなくした、
新規な光ビイチオ。ディスクの接合構造を得るようにし
た光ディスク瞬合方法を提供することにある。The purpose of the present invention is to eliminate the drawbacks of the conventional adhesive structure mentioned above.
New light beam. It is an object of the present invention to provide an optical disc splicing method for obtaining a disc joining structure.

即ち本発明は上記目的を達成するために、ディスク内周
部の一部に微少突起形状を設け、かかるようにしたディ
スクを粘着性接着剤で仮り接着し、その後突起相当部に
超音波振動を加えて、突起部を熱的に溶融させ、レプリ
カ１ａと１ｂを一体的にすることを特徴とするものであ
る。ここで粘着性接着剤は、超音波振動を吸収し、記録
ピットの変形を防ぐ効果と、レプリカ’　ａ　＋　１　
ｂの接着という効果を併用させるようにした。That is, in order to achieve the above object, the present invention provides minute protrusions on a part of the inner periphery of the disk, temporarily adheres such a disk with adhesive adhesive, and then applies ultrasonic vibrations to the portion corresponding to the protrusions. In addition, the replicas 1a and 1b are integrated by thermally melting the protrusions. Here, the adhesive has the effect of absorbing ultrasonic vibration and preventing deformation of the recording pit, and the replica 'a + 1
The adhesion effect of b was combined.

以下、本発明の実施例について、図面を用いて詳細に説
明する。第２図（ａ）　、　（ｂ）は、本発明に係るレ
プリカ１ｃの形状を示す斜視図、断面図で、レプリカ１
ｃの内周に沿った位置に、それぞれ５０μ、　１００．
ａ　、２００／Ｊ　ｌ　３００μの高さと幅のほぼ等し
い寸法の三角状突起５ａを、レプリカ１ｃの射出成形時
に設けた。ここでビイデオ信号記録面は、第２図の（イ
）の範囲に形成されている。Embodiments of the present invention will be described in detail below with reference to the drawings. FIGS. 2(a) and 2(b) are a perspective view and a sectional view showing the shape of the replica 1c according to the present invention.
50μ and 100μ, respectively, along the inner circumference of c.
A triangular protrusion 5a having substantially the same height and width as 200/J l 300μ was provided during injection molding of the replica 1c. Here, the video signal recording surface is formed in the range (a) in FIG. 2.

この突起５を有するレプリカ１ｃは、レプリカ１ａと共
に、従来の方法と同様にして、金属蒸着膜５と蒸着保Ｗ
１膜を形成し、かつ１　ａ　＋　１　ｃ共に粘着性接着
剤、例えば、アクリル酸ブチル系粘着剤、もしくは熱可
塑性ゴム系ホットメルト接着剤４ａなどで第３図に示す
よう妊貼シ合せてディスクとする。この時、接着剤の厚
さは突起５よシも厚くならないようにした。従って・レ
プリカ１ａのみに接着剤４ａを塗布すること、、４ｂ出
来る。このようにして貼り合せたディスクは・、第４図
に示す超音波振動を利用した方法で接合して一体的な接
合構造とした。The replica 1c having the protrusion 5, together with the replica 1a, is made of a metal vapor deposited film 5 and a vapor deposition retainer W in the same manner as in the conventional method.
1 film is formed, and 1a + 1c are bonded together with adhesive adhesive, such as butyl acrylate adhesive or thermoplastic rubber hot melt adhesive 4a, as shown in Fig. 3. Disc. At this time, the thickness of the adhesive was set so that it did not become thicker than the protrusion 5. Therefore, it is possible to apply the adhesive 4a only to the replica 1a, 4b. The thus bonded disks were bonded by a method using ultrasonic vibration shown in FIG. 4 to form an integral bonded structure.

ここで超音波振動は、電源６ｅで駆動するＰＺＴなどの
超音波振動子６ｃで発生した超音波振動をブースタ６ｂ
を通じ＼超音波振動増幅体６ａ（以下ホーンと略す）に
よってディスクに供給される。ここで６ｄは加圧用のエ
アシリンダで、７け接合用の受治具である。Here, the ultrasonic vibration is generated by an ultrasonic vibrator 6c such as PZT driven by a power source 6e, and is transmitted to a booster 6b.
The ultrasonic vibration amplifier 6a (hereinafter abbreviated as horn) supplies the vibration to the disk through the ultrasonic vibration amplifier 6a (hereinafter abbreviated as horn). Here, 6d is an air cylinder for pressurization, and is a receiving jig for joining 7 pieces.

第５図は突起５ａが、超音波振動によって熱溶融し、金
属蒸着Ｍ３を貫通してレプリカ１ａと１ｃとが一体的に
なった状態を示す。FIG. 5 shows a state in which the protrusion 5a is thermally melted by ultrasonic vibration, penetrates the metal vapor deposition M3, and the replicas 1a and 1c are integrated.

ここで、超音波振動をレプリカｉｃ上に印加すると、こ
の振動は突起部５にだけ集中せず、一部はレプリカ面す
なわず水平方向にも拡散して行く。Here, when ultrasonic vibrations are applied to the replica IC, the vibrations are not concentrated only on the protrusion 5, but also partially diffuse onto the replica surface, that is, in the horizontal direction.

この時、粘着性接着剤はレプリカ１ａと１ｃの金属蒸着
膜同志の接触を防止するだけでなくこの水平方向の超音
波振動を吸収する効果をもっている。At this time, the adhesive has the effect of not only preventing the metal deposited films of the replicas 1a and 1c from coming into contact with each other, but also absorbing this horizontal ultrasonic vibration.

たとえば、かかる粘着性接着剤なしに超音波による接合
を行なうと、レプリカｊａ＋１ｃに形成されたピット２
の変形、破壊の発生がみられ、好ましいビイデオ信号を
得ることが出来ない。For example, if ultrasonic bonding is performed without such adhesive, pit 2 formed in replica ja+1c
Deformation and destruction occur, making it impossible to obtain a desirable video signal.

以上述べた本発明による光方式のビイデオディスクは、
第６図に示すように従来の接合構造と異なり、部分的に
しろＰＭＭＡが一体的になっておシ、高温使用時のディ
スクのズレ変形を防止できるものである。しかも、超音
波溶着部分がディスク内周に限定しており、高速回転時
のたわみ変形から平坦になる挙動は従来の接合構造と変
化がなく、充分な平坦度が得られることは云うまでもな
い。The optical video disc according to the present invention described above is
As shown in FIG. 6, unlike the conventional joining structure, PMMA is integrated, even if only partially, to prevent disc displacement and deformation during high-temperature use. Moreover, the ultrasonic welding part is limited to the inner circumference of the disk, and the behavior of flattening due to deflection deformation during high-speed rotation is the same as with conventional joint structures, and it goes without saying that sufficient flatness can be obtained. .

本発明による接合構造は、凹状のピットをビイデオ信号
記録媒体とする光方式のビイデオ。The bonding structure according to the present invention is an optical video system that uses concave pits as a video signal recording medium.

ディスクに適用できるのみならず、他方式の信号を記録
する２枚貼り合せ型ディスクにも適用できる。It can be applied not only to discs, but also to two-disk laminated discs that record signals of other formats.

以上説明したように本発明によれば、従来の接合構造で
みられた高温時のズレ変形を完全に防止できるのみなら
ず、接着剤の選定範囲が広がり、低価格の接着剤を容易
に入手することが可能となり、経済的にも有利なものに
することができる効果を奏する。As explained above, according to the present invention, it is not only possible to completely prevent the displacement and deformation caused by conventional bonding structures at high temperatures, but also the selection range of adhesives has been expanded, and low-cost adhesives can be easily obtained. This has the effect of making it economically advantageous.

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

第１図は従来の光方式ビイチオ。ディスクの製造工程と
接合構造を示す図、第２図は本発明の実施例に用いた超
音波溶着用突起５を有したレプリカを示す図、第３図〜
第５図は、本発明を実現する方法、および一体化された
ディスクの接合状態を示す図、第６図は本発明による新
規なビイデオ、デ仁スクの接合構造の一実施例を示す図
である。 １Ｃ・・・レプリカ、　　　２・・・ビイチオ信号用ビ
ット、４ａ・・・接着剤層、　　５・・・超音波溶着用
突起。 代理人弁理士　薄　１）利　喬 ′″；ｒ′１　　図 ′″ｉ２　　図 才３　竪 ？４図 一才５１ ′ｆ　乙　図Figure 1 shows the conventional optical system. Figures showing the manufacturing process and bonding structure of the disk; Figure 2 is a diagram showing a replica with the ultrasonic welding protrusion 5 used in the embodiment of the present invention; Figures 3 to 3;
FIG. 5 is a diagram showing a method for realizing the present invention and the state of joining of integrated discs, and FIG. 6 is a diagram showing an embodiment of the joint structure of a novel video and disc according to the present invention. be. 1C... Replica, 2... Biichio signal bit, 4a... Adhesive layer, 5... Ultrasonic welding projection. Agent Patent Attorney Bo 1) Li Qiao'''；r'1 Figure'''i2 Figure'sai3 Vertical? 4 figure 1 year old 51 'f Otsu figure

Claims (1)

【特許請求の範囲】[Claims] ｔ　記録面が形成された２枚貼り合せの透明情（脂製の
光方式ディスクの接合方法において、一方のティスフ記
録面側の内周に沿って微少高さの突起を設け、かつ貼り
合せ面に粘性接着層を介在させた一次貼り合せディスク
の前記突起を設けた内周部に沿、って超音波振動を加え
、前記突起を熱溶融して一体的にしたことを特徴とする
ディスク接合方法。t Transparency of two discs bonded together with a recording surface formed (in a method of bonding optical discs made of oil, a protrusion of a minute height is provided along the inner periphery of one of the recording surfaces, and the bonded surface Disc bonding characterized in that ultrasonic vibration is applied along the inner periphery of a primary bonded disk with a viscous adhesive layer interposed therebetween, on which the protrusion is provided, and the protrusion is thermally melted and integrated. Method.
JP57084708A 1982-05-21 1982-05-21 Optical disc joining method Pending JPS58203645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57084708A JPS58203645A (en) 1982-05-21 1982-05-21 Optical disc joining method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57084708A JPS58203645A (en) 1982-05-21 1982-05-21 Optical disc joining method

Publications (1)

Publication Number Publication Date
JPS58203645A true JPS58203645A (en) 1983-11-28

Family

ID=13838157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57084708A Pending JPS58203645A (en) 1982-05-21 1982-05-21 Optical disc joining method

Country Status (1)

Country Link
JP (1) JPS58203645A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180535A (en) * 1984-09-27 1986-04-24 Pioneer Electronic Corp Optical information record carrier
US4877667A (en) * 1986-07-22 1989-10-31 Mitsubishi Denki Kabushiki Kaisha Optical disc with inhibited thermal distortion
US4900380A (en) * 1987-10-23 1990-02-13 Fuji Photo Film Co., Ltd. Process for producing information recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180535A (en) * 1984-09-27 1986-04-24 Pioneer Electronic Corp Optical information record carrier
US4877667A (en) * 1986-07-22 1989-10-31 Mitsubishi Denki Kabushiki Kaisha Optical disc with inhibited thermal distortion
US4900380A (en) * 1987-10-23 1990-02-13 Fuji Photo Film Co., Ltd. Process for producing information recording medium

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