JPS6129434A - Information recording substrate - Google Patents
Information recording substrateInfo
- Publication number
- JPS6129434A JPS6129434A JP15058384A JP15058384A JPS6129434A JP S6129434 A JPS6129434 A JP S6129434A JP 15058384 A JP15058384 A JP 15058384A JP 15058384 A JP15058384 A JP 15058384A JP S6129434 A JPS6129434 A JP S6129434A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- substrates
- adhesive
- spacers
- coating
- 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
- 239000000758 substrate Substances 0.000 title claims abstract description 51
- 239000000853 adhesive Substances 0.000 claims abstract description 23
- 125000006850 spacer group Chemical group 0.000 claims abstract description 23
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract 6
- 238000000576 coating method Methods 0.000 abstract 6
- 230000002093 peripheral effect Effects 0.000 abstract 3
- 238000004299 exfoliation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Optical Record Carriers And Manufacture Thereof (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によ
って情報の書き込み、読み出しが行なわれる情報記録基
板に関し、特にエアーサンドイッチ型のディスク基板に
関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an information recording substrate on which information is written and read by focusing light such as a laser beam, and particularly relates to an air sandwich type disk substrate. It is something.
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及は通常第３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′を介して接着し、前
記記録媒体２と２′の間に中空部４を形成している。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. to 2
The two substrates 1 and 1' are placed one above the other, and are adhered to the inner and outer peripheries with spacers 3 and 3' made of plastic, etc., to form a hollow part 4 between the recording media 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ッチ構
造のディスク基板は、輸送中の高度変化による圧力差や
周囲の温度変化によシ、基板中空部が膨張収縮する為、
基板が変形し、スペーサと基板との接着層が破壊し、ハ
ク離する欠点がある。Conventionally, disk substrates with an air sandwich structure using spacers as described above expand and contract in the hollow part of the substrate due to pressure differences due to changes in altitude and changes in ambient temperature during transportation.
There is a drawback that the substrate is deformed and the adhesive layer between the spacer and the substrate is destroyed and peeled off.
特に近年ディスク形状を小型化し、記録媒体領域を広げ
る場合、スペーサ幅が狭くなる為、外スペーサ部のハク
離が多くなった。Particularly in recent years, when the disk shape has been miniaturized and the recording medium area has been expanded, the spacer width has become narrower, so peeling of the outer spacer portion has increased.
本発明はこのような従来の欠点を除去し、耐久性に優れ
たエアーサンドイッチ構造の情報記録基板を提供するも
のである。The present invention eliminates these conventional drawbacks and provides an information recording substrate having an air sandwich structure with excellent durability.
本発明によれば内周及び外周スペーサを基板に接着した
後ディスク基板内周部と外周部を接着で固めたことによ
シ、温度差や圧力差による基板とスペーサとのハク離を
解消したことを特徴とするエアーサンドイッチ構造の情
報記録基板が得られる。According to the present invention, by bonding the inner and outer circumferential portions of the disk substrate with adhesive after bonding the inner and outer circumferential spacers to the substrate, peeling of the substrate and spacer due to temperature and pressure differences is eliminated. An information recording substrate having an air sandwich structure is obtained.
本発明は、上述の構成をとることによシ従来技術の問題
点を解決した。まずディスク基板の内周部・外周部を接
着剤で固めたことによシ、接着強さが向上し中空部と外
部との圧力差による従来発生していた基板とスペーサの
ハク離が無くなる利点がある。The present invention has solved the problems of the prior art by adopting the above-described configuration. First, by cementing the inner and outer peripheries of the disk substrate with adhesive, the adhesive strength is improved, and the advantage is that the peeling between the substrate and spacer, which conventionally occurs due to the pressure difference between the hollow part and the outside, is eliminated. There is.
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１図は本発明のエアーサンドイッチ構造の情
報記録基板旦の構成を示す断面図である。Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view showing the structure of an information recording substrate having an air sandwich structure according to the present invention.
情報記録基板旦は中心に丸穴を有する透明な基板１及び
１′の間に内外スペーサ６及び６′を挾持し、基板の片
面に塗布された記録媒体層２及び２′が互いに対向する
向きで接着され、接着された基板の内外周部を接着剤で
固めた接着層７および７′で構成されている。The information recording substrate 1 has inner and outer spacers 6 and 6' sandwiched between transparent substrates 1 and 1' having a round hole in the center, and recording medium layers 2 and 2' coated on one side of the substrate are oriented to face each other. It is made up of adhesive layers 7 and 7', which are bonded together and hardened with adhesive on the inner and outer peripheries of the bonded substrates.
本発明における組立は、第１図において内・外スペーサ
６及び６′の両面に接着剤（図示せず）を塗布し基板１
及び１′を接合することにより貼り合せを行なう。この
際光硬型の接着剤を用いれば硬化時間を大幅に短縮でき
る。Assembly in the present invention is performed by applying adhesive (not shown) to both sides of the inner and outer spacers 6 and 6' in FIG.
and 1' are bonded together. At this time, if a light curing adhesive is used, the curing time can be significantly shortened.
この際内スペーサ６の内径は基板の丸穴よシ僅かに大き
く、外スペーサの外径は基板の外径よシ僅かに小さい寸
法であシ、基板と同心で接着する。At this time, the inner diameter of the inner spacer 6 is slightly larger than the circular hole of the substrate, and the outer diameter of the outer spacer is slightly smaller than the outer diameter of the substrate, and is bonded concentrically with the substrate.
次に情報記録基板旦の内周部及び外周部の接着剤塗布は
第２図に示すように、情報記録基板旦を回転させ、塗布
機（図示せず）ノズル９及び９′によシ内周部及び外周
部に塗布を行なう。Next, as shown in FIG. 2, the adhesive is applied to the inner and outer peripheries of the information recording substrate by rotating the information recording substrate and using the nozzles 9 and 9' of the applicator (not shown) inside the adhesive. Apply to the periphery and outer periphery.
この際光硬化型接着剤を用いれば、塗布終了後上部の匠
ランプ１０の照射によシ即時に硬化し接着層７及び７′
を形成する。情報記録基板旦の中心丸穴寸法の公差が必
要な時はブレード（図示せず）によシしごくことで第２
図のような液溜層７′を形成できる。外径寸法公差が必
要な時は同じ手法で行なう。At this time, if a photocurable adhesive is used, it will be cured immediately after application is completed by irradiation from the upper Takumi lamp 10, and the adhesive layers 7 and 7' will be cured immediately.
form. When the tolerance of the center round hole size of the information recording board is required, the blade (not shown) can be used to tighten the second
A liquid reservoir layer 7' as shown in the figure can be formed. The same method is used when outside diameter tolerance is required.
尚記録層として二面記録の可能なエアーサンドイッチ構
造のディスク基板について説明しだが、いずれか一方の
みの記録面を有するものであっても良いことは言うまで
もない。Although a disk substrate having an air sandwich structure capable of recording on two surfaces as a recording layer has been described, it goes without saying that it may have only one recording surface.
本発明の情報記録基板によれば、接着されたディスク基
板の内周部及び外周部を接着剤で固めたことによシ、基
板とスペーサの接着強度が大幅に向よした為、従来問題
であったスペーサと基板のハク離が解消されたばかシが
、ディスク基板中空部と外部との気密度が上った為、結
露などによる記録媒体への悪影響が解消された。According to the information recording substrate of the present invention, the adhesive strength between the substrate and the spacer is greatly improved by hardening the inner and outer circumferential portions of the bonded disk substrate with adhesive, which eliminates the problems of the conventional method. The separation between the spacer and the substrate was eliminated, and the airtightness between the hollow part of the disk substrate and the outside was increased, eliminating the negative effects of condensation on the recording medium.
さらに内・外周部は接着剤粘性によ、９Ｒ形状で硬化し
ている為、手ざわシが非常に滑かな効果が得られる。Furthermore, the inner and outer peripheries are cured in a 9R shape due to the viscosity of the adhesive, resulting in an extremely smooth texture.
第３図は従来のエアーサンドイッチ構造の情報記録基板
の一例を説明する図、第１図及び第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′は記録媒体層、３．３’
及び６ｔ６′はスペーサ、４は中空部、旦及び旦は情報
記録基板、７及び７′は接着層、９及び９′はノズル、
１０はＵＶランプである。
７Ｉ−１図
オ ２ 図
７Ｉ−３図FIG. 3 is a diagram illustrating an example of a conventional information recording substrate having an air sandwich structure, and FIGS. 1 and 2 are sectional views showing an embodiment of the present invention. In the figure, 1 and 1' are substrates, 2 and 2' are recording medium layers, and 3.3'
and 6t6' are spacers, 4 is a hollow part, 7 and 7' are information recording substrates, 7 and 7' are adhesive layers, 9 and 9' are nozzles,
10 is a UV lamp. Figure 7I-1 O 2 Figure 7I-3
Claims (1)
録面を有する二枚のディスク基板の内外周部をスペーサ
を間に挾んで平行に貼り合わせるエアーサンドイッチ構
造の情報記録基板において、接合面に接着剤を塗布し、
前記基板とスペーサを接着した後、接合されたディスク
基板の内周部及び外周部に接着剤を塗布及び硬化させる
ことを特徴とする情報記録基板。In an information recording substrate with an air sandwich structure, the inner and outer peripheries of two disk substrates each having a recording surface on which information is written and read by light are attached in parallel with a spacer in between, and adhesive is applied to the bonding surfaces. death,
An information recording substrate characterized in that, after bonding the substrate and the spacer, an adhesive is applied and cured on the inner and outer circumferential portions of the bonded disk substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15058384A JPS6129434A (en) | 1984-07-20 | 1984-07-20 | Information recording substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15058384A JPS6129434A (en) | 1984-07-20 | 1984-07-20 | Information recording substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6129434A true JPS6129434A (en) | 1986-02-10 |
Family
ID=15500055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15058384A Pending JPS6129434A (en) | 1984-07-20 | 1984-07-20 | Information recording substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6129434A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60185235A (en) * | 1984-03-05 | 1985-09-20 | Ricoh Co Ltd | Information recording medium |
-
1984
- 1984-07-20 JP JP15058384A patent/JPS6129434A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60185235A (en) * | 1984-03-05 | 1985-09-20 | Ricoh Co Ltd | Information recording medium |
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