JPS60182530A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPS60182530A JPS60182530A JP59037308A JP3730884A JPS60182530A JP S60182530 A JPS60182530 A JP S60182530A JP 59037308 A JP59037308 A JP 59037308A JP 3730884 A JP3730884 A JP 3730884A JP S60182530 A JPS60182530 A JP S60182530A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- recording medium
- spacer
- substrate
- base
- 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
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は光ビームにより記録、再生を行なうことがＩｊ
■能な光学的記録媒体に関するものである。[Detailed Description of the Invention] The present invention is capable of recording and reproducing using a light beam.
(1) It relates to a capable optical recording medium.
従来よりカラス、アクリル樹脂、ボリカーボ？−１−樹
脂等の基板に磁気光学効果、フォトクロ；ズム、非晶質
から結晶質への相転移等を利用しｌ尤メモリ拐料を成膜
した記録媒体２枚に、スペーツーを挾み込んで記録層ど
うしが対向する様にして接着した中空構造、所謂エアー
サンドインチ小遣の光学的記録媒体が提案されている。Crow, acrylic resin, Bolicarbo than before? -1- A spacer is sandwiched between two recording media in which a film of a memory additive is formed on a substrate such as a resin by utilizing the magneto-optical effect, photochromism, phase transition from amorphous to crystalline, etc. A so-called air sand inch optical recording medium has been proposed, which has a hollow structure in which the recording layers are bonded so as to face each other.
これらの記録媒体を組立てる場合には、接着ｌを使い接
着固定しているが、従来形状の基体、スペーサーを使用
した場合には接着剤塗布量の過少、過多が問題になって
いた。つまり接着剤の塗布量が必要量よりも少なかった
場合には接着むらが生じ、そのため接着強度が十分でな
い製品や外観不良の製品が生じ、生産歩留を下げる原因
と７ｊつでいた。また塗布量が多ずぎた場合には、被接
着面５ 以外に接着剤がはみ出してしま（・、接着組立
て後はみ出した接着剤を除去したり、予め基体を必要寸
法よりも−回り大きめに作っておき、組立後その外周部
、内周部をはみ出した接着剤といっしょに規定寸法に切
断して取り除く等、記録媒体を組、み立て後、はみ出し
接着剤を除去する工程が必要。だった。When assembling these recording media, adhesives are used to fix them, but when conventionally shaped substrates and spacers are used, there is a problem of too little or too much adhesive being applied. In other words, if the amount of adhesive applied is less than the required amount, uneven adhesion will occur, resulting in products with insufficient adhesive strength or with poor appearance, leading to a decrease in production yield. In addition, if too much adhesive is applied, the adhesive will protrude to areas other than the surface to be adhered 5. It is necessary to remove the protruding adhesive after assembling and assembling the recording medium. .
本発明の目的は、上記問題点を改善する為になされたも
ので、組み立て後のはみ出し接着附の除去工程を要せず
に且接着ずべき面には必要量の接ｑ 着剤が十分塗布さ
れた前記エアーサンドインチ構造の光学的記録媒体を提
供することにある。The purpose of the present invention was to improve the above-mentioned problems.The purpose of the present invention is to eliminate the need for a removal process for protruding adhesive after assembly, and to sufficiently apply the necessary amount of adhesive to the surfaces to be adhered. An object of the present invention is to provide an optical recording medium having the above-mentioned air sand inch structure.
ｕ 本発明の上記目的は、記録層が形成された２枚の基
体が、スペーサーを挾んで接着されて成る中空構造の光
学的記録媒体において、前記基体とスペーサーとの接着
部分が基体端より基体側に引き込まれて形成されている
事を特徴とする光学的記録媒体な提供することにより達
成される。u The above object of the present invention is to provide an optical recording medium having a hollow structure in which two substrates each having a recording layer formed thereon are bonded to each other with a spacer interposed therebetween, in which the adhesive portion between the substrate and the spacer extends from the edge of the substrate toward the substrate. This is achieved by providing an optical recording medium that is characterized by being drawn in to the side.
本発明においては、記録媒体を組み立てた状態で基体の
端面よりもスペーサーの端面がへこんでいろ為、この空
間に余剰接着剤を吸収できる。よって余４（す接着剤が
被接着面以外に付着するのを防止１．、はみ出し接着剤
除去工程を省略できる為、組立て作業性を向上すること
ができる。尚、本発明の記録媒体においては基体とスペ
ーサーの段差部分で吸収できる量の余剰接着剤は問題に
ならない為、接着剤は必要量よりも多少冬目に塗布する
ことが出来、従って接着むらが生じる可能性はきわめて
少ない。In the present invention, since the end face of the spacer is recessed more than the end face of the base when the recording medium is assembled, excess adhesive can be absorbed into this space. Therefore, it is possible to prevent the remaining adhesive from adhering to surfaces other than the surface to be adhered (1), and to omit the step of removing the protruding adhesive, thereby improving assembly workability.In addition, in the recording medium of the present invention, Since excess adhesive in the amount that can be absorbed by the stepped portion between the base and the spacer is not a problem, the adhesive can be applied in a slightly smaller amount than the required amount, and therefore the possibility of uneven adhesion occurring is extremely small.
す、下に実施例を示して本発明を具体的に説明する。The present invention will be specifically explained below with reference to Examples.
実１血例−１
；）’ｙ １図は、本発明の実施例の一つであるドーナ
ツ状のエアーサンドインチ構造の光学的記録媒体の側断
面図である、第３図は従来のエアーサンドインチ構造の
ものの細断［ｎ１図である。第１図中１゜１′はアクリ
ル樹脂よりなるドーナツ状基板である。Example 1 ;)'y Figure 1 is a side cross-sectional view of an optical recording medium with a doughnut-shaped air sandwich structure, which is one of the embodiments of the present invention. Shredded sand inch structure [Fig. n1] In FIG. 1, 1° 1' is a donut-shaped substrate made of acrylic resin.
この基板に記録層２，２′を成膜した後、記録層どうし
が対向する様にスペーサー３．すを挾んで接着剤４で貼
り合わせ、エアーサンドイッチ４１１１造の光学的記録
媒体を構成している。After forming the recording layers 2 and 2' on this substrate, spacers 3. The two are sandwiched together and bonded together with adhesive 4 to form an optical recording medium made of air sandwich 4111.
図から明らかな株に外周部スペーサーの外径は基体より
も小さく、内周部スペーサーの内径は）１（体よりも大
きい為、基体とスペーサーの端面に段差が生じており、
接着固定の時に余剰接着剤はスペーサーの端面方向に押
しやられるが基体端面方向の余剰接着剤はこの段差部分
で吸収される為、従来のエアーサンドインチ構造の光学
的記録媒体（第３図）に比べ被接着面以外に接着剤がは
み出すことがない。It is clear from the figure that the outer diameter of the outer spacer is smaller than the base, and the inner diameter of the inner spacer is larger than the body, so there is a step between the end of the base and the spacer.
During adhesive fixation, excess adhesive is pushed toward the end surface of the spacer, but excess adhesive toward the end surface of the substrate is absorbed by this stepped portion, so that it is not possible to use a conventional air sand inch structure optical recording medium (Figure 3). In comparison, the adhesive does not protrude beyond the surface to be adhered.
実施例−２
第２図は本発明の第２の実施例であるエアーサンドイン
チ構造の光学的記録媒体の側断面図である。Embodiment 2 FIG. 2 is a side sectional view of an optical recording medium having an air sandwich structure according to a second embodiment of the present invention.
第４図は従来のエアーサンドインチ構造のものの側断面
図である。実施例−１と異なる点は、基板に１．００
ｍｍ角のガラス板（５，！５’）を使用しており、ドー
ナツ状基板のように回転中心の穴が空いてない為、内周
部スペーサーは必要ない。この基板に記録層（（＋、
６’ ）を成膜した後、記録層どうしが対向する様にス
ペーサー７を挾んで接着剤４で貼り合わせエアーサンド
インチ構造の光学的記録媒体を４１１１１成している。FIG. 4 is a side sectional view of a conventional air sand inch structure. The difference from Example-1 is that 1.00
Since a mm square glass plate (5, !5') is used and there is no hole at the center of rotation unlike a donut-shaped substrate, no spacer is required for the inner circumference. This substrate has a recording layer ((+,
After forming a film 6'), the recording layers are bonded together with an adhesive 4 with a spacer 7 in between so as to face each other, thereby forming an optical recording medium 41111 having an air sand inch structure.
図から明らかな様に、本実施例による記録媒体もノ１（
板とスペーサーの段差部分で余剰接着剤が吸収できる為
、被接着面以外に接着剤がはみ出さず接着剤除去工程が
不要となった。As is clear from the figure, the recording medium according to this embodiment is also No. 1 (
Since excess adhesive can be absorbed at the step between the board and the spacer, the adhesive does not protrude beyond the surface to be adhered, making an adhesive removal process unnecessary.
以上実施例で説明した様に、本発明によるエアーサンド
イッチ（ＩＩＩｌｌ造の光学的記録媒体は、（ｉｌ ］
、ｙ体がドーナツ形状の場合外周部スペーサーの外径が
基体の外径よりも小さく、内周部スペーサーの内径が基
体の内径よりも太き（・。As explained above in the embodiments, the optical recording medium of the present invention made of air sandwich (III) is
, when the y-body is donut-shaped, the outer diameter of the outer circumferential spacer is smaller than the outer diameter of the base, and the inner diameter of the inner circumferential spacer is thicker than the inner diameter of the base (.
（１１）基体に回転中心の穴が空いていない場合外周部
スペーサーの外径が基体の外径よりも小さいスペーサー
を使用することにより、組立時に使用する接着剤の余剰
分を吸収し、被接着面以外に接着剤が付着するのを防止
できる。よって組立加工後の工程を省略でき、作業性を
向上させることかできる。(11) If the base does not have a hole for the center of rotation, use a spacer whose outer diameter is smaller than the outer diameter of the base to absorb the excess adhesive used during assembly and Prevents adhesive from adhering to surfaces other than the surface. Therefore, steps after assembly can be omitted, and workability can be improved.
第１図、２図は本発明の光学的記録媒体の構をな、又第
３図、４図は従来の光学的記録媒体の構造を模式的に示
した側断面図である。
１．１′、５，５１・・・・・・基板。
２、２？ ６．６’・・・・・・光学的記録層。
３．３ζ７・・・・・・・・・スペーサー（発明品の場
合）。
４ ・・・・・・・・・・・・接着剤。
ｓ、 ｓ４９・・・・・・・・・スペーサー（従来品の
場合）。
特許出願人 キャノン株式会社
第１図
第２図
第３図
第４図1 and 2 are side sectional views schematically showing the structure of an optical recording medium of the present invention, and FIGS. 3 and 4 are side sectional views schematically showing the structure of a conventional optical recording medium. 1.1', 5, 51... Board. 2, 2? 6.6'...Optical recording layer. 3.3ζ7・・・・・・・・・Spacer (for invented products). 4 ・・・・・・・・・Adhesive. s, s49... Spacer (for conventional products). Patent applicant Canon Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
挾んで接着されて成る中空構造の光学的３＋録媒体にお
いて、前記基体とスペーサーとのセ着部分が基体端より
基体側にσ１き込まれて形＋７されている事を特徴とす
る光学的記録媒体。(Li) In an optical 3+ recording medium with a hollow structure in which two substrates on which recording layers are formed are glued together with a spacer in between, the bonded portion of the substrate and spacer is σ1 toward the substrate side from the edge of the substrate. An optical recording medium characterized in that it is embedded in a +7 shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59037308A JPS60182530A (en) | 1984-03-01 | 1984-03-01 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59037308A JPS60182530A (en) | 1984-03-01 | 1984-03-01 | Optical recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60182530A true JPS60182530A (en) | 1985-09-18 |
Family
ID=12494063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59037308A Pending JPS60182530A (en) | 1984-03-01 | 1984-03-01 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60182530A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2591788A1 (en) * | 1985-12-16 | 1987-06-19 | Ricoh Kk | OPTICAL INFORMATION RECORDING MEDIUM |
-
1984
- 1984-03-01 JP JP59037308A patent/JPS60182530A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2591788A1 (en) * | 1985-12-16 | 1987-06-19 | Ricoh Kk | OPTICAL INFORMATION RECORDING MEDIUM |
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