JPS60103537A - Manufacture of information recording medium - Google Patents
Manufacture of information recording mediumInfo
- Publication number
- JPS60103537A JPS60103537A JP58211813A JP21181383A JPS60103537A JP S60103537 A JPS60103537 A JP S60103537A JP 58211813 A JP58211813 A JP 58211813A JP 21181383 A JP21181383 A JP 21181383A JP S60103537 A JPS60103537 A JP S60103537A
- Authority
- JP
- Japan
- Prior art keywords
- bonding
- bonded
- information recording
- recording medium
- ultrasonic wave
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 125000006850 spacer group Chemical group 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 17
- 239000004576 sand Substances 0.000 claims 1
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003847 radiation curing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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
- 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
- B29C66/01—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
- B29C66/3024—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being non-integral with the parts to be joined
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
-
- 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
- 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
-
- 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
Description
【発明の詳細な説明】
本発明は、たとえばレーザ光等の光を集束することによ
って情報の書き込み、読み出しが行なわれるプラスチッ
ク製の情報記録媒体の製造方法に関し、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 The present invention relates to a method of manufacturing a plastic information recording medium in which information is written and read by focusing light such as a laser beam, and particularly relates to a method of manufacturing an air sandwich type disk. It is something.
従来スペーサを使用するエアーサンドインチ構造の情報
記録媒体に関しては、熱硬化型やＵＶ硬化型による接着
剤を使用するのが一般的である。Conventionally, for information recording media having an air sandwich structure using spacers, it is common to use thermosetting or UV curing adhesives.
しかしながらこのようなタイプの接着剤を使用す射硬化
の際に発生するガス等が媒体と化学変化を起こし媒体の
劣化をまねくといった問題があった。However, there is a problem in that gases generated during radiation curing using this type of adhesive cause chemical changes with the medium, leading to deterioration of the medium.
又、接着剤を使用するということは、接着剤の塗布に多
大な工数を要するだけでなく、接着剤がディスク基板の
内周及び外周縁部の接着面から溢れて媒体と化学反応を
起ヒしたり、内外周部に付着したりするというような外
観上の欠点を有する。Furthermore, using adhesive not only requires a large amount of man-hours to apply the adhesive, but also causes the adhesive to overflow from the adhesive surface on the inner and outer edges of the disk substrate and cause a chemical reaction with the medium. It has disadvantages in terms of appearance, such as the fact that it sticks to the inner and outer peripheries.
さらに接着層の厚さの不均一性により不釣シ合いが発生
した９基板が変形し平面度が増大するというような欠点
もある。Furthermore, there is also the drawback that the unbalanced 9 substrates are deformed due to non-uniformity in the thickness of the adhesive layer, resulting in an increase in flatness.
本発明の目的は、かかる欠点を除去する為にスペーサ及
びディスク基板の接合面部ＫＷＩ状の突起部を設け、超
音波溶着法によシ、接合時間が短時間で接合層が均一な
し枠１も接合力の強固な、情報記録媒体の製造方法を提
祖するも゛のである。An object of the present invention is to eliminate such drawbacks by providing KWI-shaped protrusions on the bonding surfaces of the spacer and the disk substrate, and by using ultrasonic welding, the bonding time is short and the bonding layer is uniform. He is the founder of a method for manufacturing information recording media with strong bonding strength.
以下に図面を参照しながら本発明の実施例について詳し
く説明する。８ｇ１図は、通常のエアーサンドイッチ構
造をした情報記録媒体の一例を示す図であり、プラスチ
ック基板ｌおよび１′の片面に記録層２および２′を形
成し該記録層２および２′を対向するように２枚の基板
１および１′を上下ＫＬ。Embodiments of the present invention will be described in detail below with reference to the drawings. Figure 8g1 is a diagram showing an example of an information recording medium having a normal air sandwich structure, in which recording layers 2 and 2' are formed on one side of plastic substrates l and 1', and the recording layers 2 and 2' are opposed to each other. Place the two boards 1 and 1' above and below KL as shown.
該基板１および１′の内周部および外周部にプラスチッ
クのスペーサ３および３′を介して接合し、基板１およ
び１′の間忙空間４を形成する構造となっている。The substrates 1 and 1' are bonded to the inner and outer circumferential portions through plastic spacers 3 and 3' to form a busy space 4 between the substrates 1 and 1'.
第２図（ａ）、 （ｂ）は本発明の実施例である情報記
録媒体のスペーサ３および３′の断面図を示す。スペー
サ３および３′の上下面に突起５が環状に形成されてい
る。突起５はプラスチックのスペーサ基板３および３′
を射出成形で製作する際容易に形成できる。このような
突起５を設けたスペーサ３により情報記録媒体を製造す
る場合、第３図に示すよ間にスペーサ３および３′を挾
んで固定した後、上部からディスクとほぼ同じ−か、よ
り大きな径を有するホーン８を押し付は加圧する。この
状態で超音波を発振するとスペーサ３および３’に形成
された突起５に摩擦熱が集中し突起５が溶けることによ
りディスク基板１および１′との接合が可能となる。こ
の結果構造的には前記のように接合方法が異なるのみで
第１図と同様となる。この際の溶着接合部の厚みや接合
面積は、前記突起部５の大きさおよび超音波溶着機６の
振幅や加圧力の増減により自由にコントロールすること
ができる為、接着むらのない均一な厚さの接合層を形成
することが可能である。FIGS. 2(a) and 2(b) show cross-sectional views of spacers 3 and 3' of an information recording medium according to an embodiment of the present invention. Annular projections 5 are formed on the upper and lower surfaces of the spacers 3 and 3'. The protrusions 5 are attached to the plastic spacer substrates 3 and 3'.
can be easily formed by injection molding. When manufacturing an information recording medium using a spacer 3 provided with such a protrusion 5, after fixing the spacers 3 and 3' between the spacers 3 and 3' as shown in FIG. Pressure is applied to the horn 8 having a diameter. When ultrasonic waves are oscillated in this state, frictional heat is concentrated on the protrusions 5 formed on the spacers 3 and 3', and the protrusions 5 melt, thereby making it possible to join them to the disk substrates 1 and 1'. As a result, the structure is the same as that shown in FIG. 1, except for the joining method as described above. At this time, the thickness and joint area of the welded joint can be freely controlled by changing the size of the protrusion 5 and the amplitude and pressure of the ultrasonic welding machine 6, so that a uniform thickness with no uneven adhesion can be achieved. It is possible to form a large bonding layer.
なお、とのスペーｆ３および３表面の突起５は、スペー
サの厚さが大きい場合は容易に形成できるが、スペーサ
９および９′が薄型の場合は第４図に示すようにディス
ク基板１および１′側に設けてもよく、その場合の効果
はスペーサに設けた時と同様である。また、突起として
各図に示すように三角形状にして説明しているが、他に
半円形や曲形状等突起部に接合時の熱が集中する構造で
あれば良い。Note that the protrusions 5 on the surfaces of the spacers f3 and 3 can be easily formed when the spacers are thick, but when the spacers 9 and 9' are thin, the protrusions 5 on the surfaces of the disk substrates 1 and 1 can be formed as shown in FIG. It may be provided on the ' side, and the effect in that case is the same as when it is provided on the spacer. Furthermore, although the protrusions are described as having a triangular shape as shown in each figure, any other structure may be used as long as the protrusions concentrate heat during bonding, such as semicircular or curved shapes.
なお、記録層として２および２′を用いた２面記録の可
能なディスクについて説・明したが２または２′のいず
れか一方のみを有するものであって良いことはいうまで
もｋい。Incidentally, although a dual-sided recordable disc using 2 and 2' as the recording layer has been described, it goes without saying that the disc may have only either 2 or 2'.
以上説明した如く本発明の情報記録媒体の製造方法によ
れば、記録層を有する２枚の基板をスペーサを介して接
合する製造方法において、スペーサまたけ基板に環状の
突起を形成することによシ、従来の塗布から硬化まで多
大な工数を要する接着剤による接合に比べ大幅な工数の
消滅が割れるばかりでなく、接着剤が内周および外周縁
部にはみ出したシ、接着むらによるディスク基板の変形
等が本質的にない均一な溶着接合層による良好々接合が
行われるという効果を有する。・As explained above, according to the method for manufacturing an information recording medium of the present invention, in the manufacturing method in which two substrates having recording layers are joined via a spacer, an annular protrusion is formed on the substrate spanning the spacer. This is a significant reduction in the number of man-hours compared to conventional adhesive bonding, which requires a large number of man-hours from application to curing.In addition to cracking, the adhesive protrudes to the inner and outer edges, and uneven adhesion causes damage to the disk substrate. This has the effect that good bonding is achieved by a uniform welded bonding layer that is essentially free from deformation.・
第１図は従来の光ディスクの一例の断面図、第２図（ａ
）、 （ｂ）および第４図は本発明の実施例を示す断面
図であり、第３図は超音波溶着機に光ディスクを配置し
た場合のそれぞれの断面を示す図である。図において、
１および１′はディスク基板、２および２′は記録層、
３および３′はスペーサ、４は空間、５は突起、６は超
音波溶着機、７は基台、８は超音波溶着機のホーン、９
および９は薄型スペーサである。Figure 1 is a sectional view of an example of a conventional optical disk, and Figure 2 (a
), (b) and FIG. 4 are cross-sectional views showing embodiments of the present invention, and FIG. 3 is a cross-sectional view showing the case where an optical disk is placed in an ultrasonic welding machine. In the figure,
1 and 1' are disk substrates, 2 and 2' are recording layers,
3 and 3' are spacers, 4 is a space, 5 is a projection, 6 is an ultrasonic welder, 7 is a base, 8 is a horn of the ultrasonic welder, 9
and 9 are thin spacers.
Claims (1)
る記録層を有するディスク基板の前記記録層を内側にし
て前記ディスク基板の内周及び外周縁部をスペーサを介
して両方平行に貼合せたエアーサンドインチ構造の情報
記録媒体の製造方法において、前記ディスク基板または
前記スペーサの面のいずれか一方の貼合せ部に環状突起
部を形成し、該スペーサと前記ディスク基板を超音波溶
着法により接合することを特徴とする情報記録媒体の製
造方法。+11 An air sand inch structure in which the inner and outer edges of the disk substrate are laminated in parallel with each other via a spacer, with the recording layer of a disk substrate on which information is written and read by light placed on the inside. In the method for manufacturing an information recording medium, an annular protrusion is formed on the bonded portion of either the disk substrate or the spacer surface, and the spacer and the disk substrate are bonded by ultrasonic welding. A method for manufacturing an information recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58211813A JPS60103537A (en) | 1983-11-11 | 1983-11-11 | Manufacture of information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58211813A JPS60103537A (en) | 1983-11-11 | 1983-11-11 | Manufacture of information recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60103537A true JPS60103537A (en) | 1985-06-07 |
Family
ID=16612015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58211813A Pending JPS60103537A (en) | 1983-11-11 | 1983-11-11 | Manufacture of information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60103537A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61165843A (en) * | 1985-01-14 | 1986-07-26 | Tdk Corp | Electrocasting mold for forming information recording medium substrate |
| EP0301830A2 (en) * | 1987-07-27 | 1989-02-01 | Mitsui Petrochemical Industries, Ltd. | Resin composition for spacers of information recording disc |
| US4834819A (en) * | 1987-08-11 | 1989-05-30 | Mitsui Petrochemical Industries, Ltd. | Process for producing information recording discs |
| US4933222A (en) * | 1987-04-02 | 1990-06-12 | Fuji Photo Film Co., Ltd. | Process for producing information recording medium |
-
1983
- 1983-11-11 JP JP58211813A patent/JPS60103537A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61165843A (en) * | 1985-01-14 | 1986-07-26 | Tdk Corp | Electrocasting mold for forming information recording medium substrate |
| US4933222A (en) * | 1987-04-02 | 1990-06-12 | Fuji Photo Film Co., Ltd. | Process for producing information recording medium |
| EP0301830A2 (en) * | 1987-07-27 | 1989-02-01 | Mitsui Petrochemical Industries, Ltd. | Resin composition for spacers of information recording disc |
| US4834819A (en) * | 1987-08-11 | 1989-05-30 | Mitsui Petrochemical Industries, Ltd. | Process for producing information recording discs |
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