JPH0321976B2 - - Google Patents
Info
- Publication number
- JPH0321976B2 JPH0321976B2 JP58045036A JP4503683A JPH0321976B2 JP H0321976 B2 JPH0321976 B2 JP H0321976B2 JP 58045036 A JP58045036 A JP 58045036A JP 4503683 A JP4503683 A JP 4503683A JP H0321976 B2 JPH0321976 B2 JP H0321976B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- substrates
- optical recording
- recording medium
- hollow
- 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.)
- Expired - Lifetime
Links
- 230000001070 adhesive effect Effects 0.000 claims description 27
- 239000000853 adhesive Substances 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 18
- 239000011796 hollow space material Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 description 13
- 239000003365 glass fiber Substances 0.000 description 12
- 239000011521 glass Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 239000011324 bead Substances 0.000 description 4
- 238000007650 screen-printing Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000004770 chalcogenides Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- -1 etc. can be selected Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
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)
Description
【発明の詳細な説明】
本発明は、レーザービーム等を照射することに
より、光学的に高密度に情報を記録する光学的記
録媒体に関し、特に光学的記録層（感熱吸光層）
の性能を長期間にわたり保持出来る構造を有する
光学的記録媒体に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical recording medium that optically records information with high density by irradiating with a laser beam or the like, and particularly relates to an optical recording layer (heat-sensitive light-absorbing layer).
The present invention relates to an optical recording medium having a structure that can maintain its performance for a long period of time.
これまでにも、レーザー光線を利用して高密度
な情報の記録・再生を行う技術は公知である。こ
れらの記録に用いる記録媒体としては、カルコゲ
ン化物などを主体とした金属膜、合金膜、非晶質
膜又は有機材料膜等がある。これらの記録媒体
は、、腐食性ガスやH2OやO2などにより劣化しや
すい傾向がある。 Techniques for recording and reproducing high-density information using laser beams have been well known. Recording media used for these recordings include metal films, alloy films, amorphous films, and organic material films mainly made of chalcogenides. These recording media tend to be easily deteriorated by corrosive gases, H 2 O, O 2 and the like.
この問題点を解決する方法として、例えば第１
図に示すように感熱吸光層を基板の内側に設けた
中空構造を有する記録媒体が検討されている。 As a method to solve this problem, for example,
As shown in the figure, a recording medium having a hollow structure in which a heat-sensitive light-absorbing layer is provided inside a substrate is being considered.
すなわち、第１図に示す従来の光学的記録媒体
は、透光性基板１と１′のそれぞれの内側に感熱
吸光層２と２′が設けられており、透光性基板１
と１′によつて形成した中空５が硬化された接着
剤などにより形成されたスペーサー３と３′によ
つて保持された構造となつている。この中空５に
感熱吸光層２と２′に対して不活性なガスを注入
すると、感熱吸光層２と２′の劣化傾向を防止す
ることができる。 That is, in the conventional optical recording medium shown in FIG.
The hollow space 5 formed by the spacers 3 and 1' is held by spacers 3 and 3' made of hardened adhesive or the like. Injecting a gas inert to the heat-sensitive light-absorbing layers 2 and 2' into the hollow 5 can prevent the heat-sensitive light-absorbing layers 2 and 2' from deteriorating.
しかし、この従来の光学的記録媒体では、スペ
ーサー３と３′の膜厚を均一に形成することが難
しく、そのために中空５の基板１，１′間隔にム
ラを生じる場合がある。このためデイスク基板を
ターンテーブルの上に置いて、これを回転させる
と、面かぶれを生じる様になり、フオーカシング
やトラツキングが困難となる欠点を有している。 However, in this conventional optical recording medium, it is difficult to form the spacers 3 and 3' with a uniform thickness, which may cause unevenness in the distance between the substrates 1 and 1' in the hollow 5. For this reason, when the disk substrate is placed on a turntable and rotated, surface blur occurs, making focusing and tracking difficult.
本発明の目的は、前述の欠点を解消した光学的
記録媒体を提供することにある。 An object of the present invention is to provide an optical recording medium that eliminates the above-mentioned drawbacks.
本発明の別の目的は、デイスク基板の回転によ
り生じる面かぶれがなく、フオーカシングやトラ
ツキングを容易に行なえる光学的記録媒体を提供
することにある。 Another object of the present invention is to provide an optical recording medium that is free from surface blur caused by rotation of a disk substrate and allows easy focusing and tracking.
本発明の別の目的は、良好な保存性能を有する
光学的記録媒体を提供することにある。 Another object of the present invention is to provide an optical recording medium with good storage performance.
本発明のかかる目的は、少なくとも一方が光学
的記録層を担持した一対の基板を、前記記録層を
内側とし、且つ、これらの基板の間に所定の厚さ
の中空が形成されるように貼り合せて成る光学的
記録媒体において、前記中空の厚さに対応した径
を有するフイラー状または粒状部材を接着剤中に
分散させ、この接着剤で前記基板の互いに対向す
る面の縁部を直接貼り合せることによつて、中空
を形成することによつて達成される。 Such an object of the present invention is to bond a pair of substrates, at least one of which carries an optical recording layer, with the recording layer on the inside, and a hollow having a predetermined thickness is formed between these substrates. In the optical recording medium, filler-like or granular members having a diameter corresponding to the thickness of the hollow space are dispersed in an adhesive, and the edges of the opposing surfaces of the substrates are directly attached with the adhesive. This is achieved by fitting together to form a hollow.
以下、本発明を図面に従つて説明する。 The present invention will be explained below with reference to the drawings.
第２図は、本発明の光学的記録媒体の断面図で
ある。本発明の光学的記録媒体は、１と１′とで
中空５が形成されている。中空５は、スペーサー
３と３′によつて一定間隔に保持されている。ス
ペーサー３と３′とは、フイラー状又は粒状部材
６を分散した接着剤を、何れか１方の基板の上に
所定の塗布法（例えば、スクリーン印刷法など）
によつて塗布した後、他方の基板を重ね合せてか
ら所定の圧力を加え、接着剤を硬化させて形成す
ることができる。このスペーサー３と３′は、基
板１と１′の間隔を一定に保持する機能をもつと
同時に基板１と１′をシールすることができる。 FIG. 2 is a cross-sectional view of the optical recording medium of the present invention. In the optical recording medium of the present invention, a hollow 5 is formed between 1 and 1'. The hollows 5 are kept at a constant distance by spacers 3 and 3'. The spacers 3 and 3' are formed by applying an adhesive in which filler-like or granular members 6 are dispersed onto one of the substrates using a predetermined coating method (for example, screen printing method, etc.).
The adhesive can be formed by applying a predetermined pressure after applying the adhesive by placing the other substrate on top of each other and curing the adhesive. The spacers 3 and 3' have the function of keeping the distance between the substrates 1 and 1' constant, and at the same time can seal the substrates 1 and 1'.
フイラー状又は粒状部材６としては、ガラスフ
アイバー、プラスチツクフアイバー、ガラスビー
ズ、プラスチツクビーズやセラミツクビーズや顔
料粒子などを選択することができるが、特にガラ
スフアイバーと顔料粒子は好ましいものの１つで
ある。これらのフイラー状又は粒状部材６の大き
さは、接着剤との分散性を考慮すると、概ね3μ
ｍ〜500μｍの径を有していることが望ましい。
500μ以上の径では接着剤との分散性が悪くなり、
所定の膜厚に形成することが難しくなり、しかも
スクリーン印刷法による塗布方法では、目づまり
の原因にもなることがある。特に、５〜50μｍ程
度の径を有するフイラー状又は粒状部材６が適し
ている。 As the filler-like or granular member 6, glass fibers, plastic fibers, glass beads, plastic beads, ceramic beads, pigment particles, etc. can be selected, and glass fibers and pigment particles are particularly preferred. The size of these filler-like or granular members 6 is approximately 3 μm considering the dispersibility with the adhesive.
It is desirable to have a diameter of m to 500 μm.
If the diameter is 500μ or more, the dispersibility with the adhesive will be poor.
It becomes difficult to form a film to a predetermined thickness, and in addition, the screen printing method may cause clogging. In particular, a filler-like or granular member 6 having a diameter of about 5 to 50 μm is suitable.
一方、スペーサー３と３′を形成する接着剤は、
有機樹脂を主体としたものが適しており、例えば
シリコン系接着剤、エポキシ系接着剤やフエノー
ルノボラツク系接着剤などを用いることができ
る。これらの接着剤は、加熱によつて硬化される
が、本発明では紫外線硬化性接着剤も有利に使用
することができる。又、前述の有機系接着剤の他
に、フリツトガラスの如き低融点ガラスを加熱溶
融−冷却して１対の基板１と１′の間を接着する
こともできる。 On the other hand, the adhesive forming spacers 3 and 3' is
A material mainly composed of organic resin is suitable, and for example, a silicone adhesive, an epoxy adhesive, a phenol novolak adhesive, etc. can be used. These adhesives are cured by heating, but UV-curable adhesives can also be advantageously used in the present invention. In addition to the above-mentioned organic adhesive, it is also possible to bond the pair of substrates 1 and 1' by melting and cooling a low-melting glass such as frit glass.
本発明の好ましい具体例では、ガラスフアイバ
ー６と接着剤をボールミルで十分に分散し、この
ガラスフアイバー６を分散した接着剤をガラス基
板１と１′のスペーサー形成予定線の上にスクリ
ーン印刷法などの塗布法により塗布した後、２枚
のガラス基板１，１′を所定の中空５が形成され
る様に重ね合せ、加圧してから所定の硬化条件下
で接着剤を硬化させることによつて、ガラスフア
イバー６を有するスペーサー３と３′が形成され、
基板１と１′の距離はスペーサ３中のガラスフア
イバー６の径に依存して一定に保持される。 In a preferred embodiment of the present invention, the glass fibers 6 and adhesive are sufficiently dispersed using a ball mill, and the adhesive containing the glass fibers 6 is applied onto the planned spacer formation lines of the glass substrates 1 and 1' using a screen printing method or the like. After coating by the coating method described above, the two glass substrates 1 and 1' are stacked so that a predetermined hollow 5 is formed, pressure is applied, and the adhesive is cured under predetermined curing conditions. , spacers 3 and 3' having glass fibers 6 are formed;
The distance between the substrates 1 and 1' is kept constant depending on the diameter of the glass fiber 6 in the spacer 3.
本発明で用いる基板１と１′としては、デイス
ク状ガラス板やデイスク状プラスチツク板を挙げ
ることができる。又、感熱吸光層２は、感光層と
して機し、一般にカルコゲン化物などを主体とし
た金属膜、合金膜、非晶質膜や有機材料膜などを
用いることができる。 Substrates 1 and 1' used in the present invention include disk-shaped glass plates and disk-shaped plastic plates. Further, the heat-sensitive light-absorbing layer 2 functions as a photosensitive layer, and generally a metal film mainly composed of chalcogenide, an alloy film, an amorphous film, an organic material film, etc. can be used.
以下、本発明を実施例に従つて説明する。 Hereinafter, the present invention will be explained according to examples.
実施例 １
平均径7μｍ、平均長さ15μｍのガラスフアイバ
ーとシリコン系接着剤をボールミルにより十分に
分散して、ガラスフアイバー入り接着剤を作成し
た。Example 1 Glass fibers having an average diameter of 7 μm and an average length of 15 μm and a silicon adhesive were sufficiently dispersed in a ball mill to prepare an adhesive containing glass fibers.
次に、感熱吸光層としてBiの蒸着膜が形成さ
れているガラス基板を用意し、このガラス基板の
感熱吸光層側にあるスペーサー形成予定線に沿つ
てガラスフアイバー入り接着剤をスクリーン印刷
法で塗布した。 Next, prepare a glass substrate on which a vapor-deposited film of Bi is formed as a heat-sensitive light-absorbing layer, and apply an adhesive containing glass fibers using a screen printing method along the planned spacer formation line on the heat-sensitive light-absorbing layer side of the glass substrate. did.
次いで、Biの蒸着膜が形成されているもう一
方のガラス基板を用意し、このガラス基板のBi
蒸着膜を内側にして先の接着剤が塗布されている
ガラス基板を重ね合せ、両側から圧力を加えた後
に、加熱して接着剤を硬化させた。この結果、基
板間隔が７〜7.2μｍの中空構造が得られた。この
距離は、接着剤に分散させたガラスフアイバーの
径に等しいことが判明した。 Next, prepare the other glass substrate on which the Bi vapor deposited film is formed, and
The glass substrates coated with the adhesive were placed one on top of the other with the vapor-deposited film facing inside, pressure was applied from both sides, and then the adhesive was cured by heating. As a result, a hollow structure with a substrate spacing of 7 to 7.2 μm was obtained. This distance was found to be equal to the diameter of the glass fibers dispersed in the adhesive.
これに対して、前述のガラスフアイバーを使用
した比較例では基板間隔が５〜8μｍとなる大き
な差を有しており、フオーカシングやトラツキン
グに困難をきたした。 On the other hand, in the comparative example using the glass fiber described above, the distance between the substrates was 5 to 8 μm, which was a large difference, making focusing and tracking difficult.
以上説明したように、スペーサー材として、一
定の径を持つガラスフアイバーやガラスビーズな
どと接着剤からなるものを用いたことにより、中
空間の距離が一定に保たれ、また接着性に優れて
いるので、長時間にわたり中空構造を保持できる
効果を有している。このため、偏心が少なく、感
熱吸光層の特性を長期間にわたつて保持出来る光
学的記録媒体を提供できるなどの利点を有してい
る。 As explained above, by using a spacer material made of glass fibers or glass beads with a certain diameter and adhesive, the distance between the hollow spaces can be kept constant and the adhesive properties are excellent. Therefore, the hollow structure can be maintained for a long time. Therefore, it has the advantage that it is possible to provide an optical recording medium that has little eccentricity and can maintain the properties of the heat-sensitive light-absorbing layer for a long period of time.
第１図は、従来の光学的記録媒体の断面図であ
る。第２図は、本発明の光学的記録媒体の断面図
である。
１，１′……基板、２，２′……感熱吸光層、
３，３′……スペーサー、４……中心軸穴、５…
…中空、６……フイラー状又は粒状部材。
FIG. 1 is a cross-sectional view of a conventional optical recording medium. FIG. 2 is a cross-sectional view of the optical recording medium of the present invention. 1,1'...Substrate, 2,2'...Thermosensitive light-absorbing layer,
3, 3'... Spacer, 4... Center shaft hole, 5...
...Hollow, 6...Filler-like or granular member.
Claims (1)
対の基板を、前記記録層を内側とし、且つ、これ
らの基板の間に所定の厚さの中空が形成されるよ
うに貼り合せて成る光学的記録媒体において、 前記中空の厚さに対応した径を有するフイラー
状または粒状部材を接着剤中に分散させ、この接
着剤で前記基板の互いに対向する面の縁部を直接
貼り合せることによつて、中空を形成したことを
特徴とする光学的記録媒体。[Scope of Claims] 1. A pair of substrates, at least one of which carries an optical recording layer, are attached so that the recording layer is on the inside and a hollow of a predetermined thickness is formed between these substrates. In the optical recording medium, filler-like or granular members having a diameter corresponding to the thickness of the hollow space are dispersed in an adhesive, and the edges of the opposing surfaces of the substrates are directly attached with the adhesive. An optical recording medium characterized in that a hollow is formed by combining the media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58045036A JPS59168947A (en) | 1983-03-16 | 1983-03-16 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58045036A JPS59168947A (en) | 1983-03-16 | 1983-03-16 | Optical recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59168947A JPS59168947A (en) | 1984-09-22 |
| JPH0321976B2 true JPH0321976B2 (en) | 1991-03-25 |
Family
ID=12708118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58045036A Granted JPS59168947A (en) | 1983-03-16 | 1983-03-16 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59168947A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0812727B2 (en) * | 1983-04-06 | 1996-02-07 | ホ−ヤ株式会社 | Optical information recording medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406053A (en) * | 1964-06-01 | 1968-10-15 | Whittaker Corp | Adhesive composition |
| US3655482A (en) * | 1969-12-23 | 1972-04-11 | Edo Corp | Bonding method and product |
| JPS531002A (en) * | 1976-05-13 | 1978-01-07 | Philips Corp | Radiation sensitive record |
-
1983
- 1983-03-16 JP JP58045036A patent/JPS59168947A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406053A (en) * | 1964-06-01 | 1968-10-15 | Whittaker Corp | Adhesive composition |
| US3655482A (en) * | 1969-12-23 | 1972-04-11 | Edo Corp | Bonding method and product |
| JPS531002A (en) * | 1976-05-13 | 1978-01-07 | Philips Corp | Radiation sensitive record |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59168947A (en) | 1984-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW475170B (en) | Optical information recording medium and method for producing the same | |
| JPH026138B2 (en) | ||
| JPH0321976B2 (en) | ||
| JPH01287841A (en) | Optical information recording medium | |
| EP0188549B1 (en) | Optical storage structure | |
| JP4194064B2 (en) | Phase change optical information recording medium | |
| JPS592245A (en) | Production of optical recording disk | |
| JP4260929B2 (en) | Optical information recording medium and manufacturing method thereof | |
| JP2774877B2 (en) | Optical disc manufacturing method | |
| JPH11120632A (en) | Production of phase transition type optical disk | |
| JP3000656B2 (en) | Information recording medium and method of manufacturing the same | |
| JPS6224456A (en) | Production of optical disk | |
| JP2702497B2 (en) | Optical information recording medium | |
| JP2596902B2 (en) | Optical information recording medium | |
| JPS60197957A (en) | Optical disk memory | |
| JPH01109549A (en) | Optical disk | |
| JP2562428B2 (en) | Optical information recording medium | |
| JPS6371955A (en) | Production of optical recording medium | |
| JPS6371956A (en) | Production of optical recording medium | |
| JP2562427B2 (en) | Optical information recording medium | |
| JPS61168149A (en) | Information recording disk | |
| JPS62223833A (en) | Information recording carrier | |
| JPH0552572B2 (en) | ||
| JPS6355741A (en) | Optical information recording disk medium having hollow structure and its production | |
| JPH0877631A (en) | Manufacture of optical recording medium |