JPS6371951A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPS6371951A JPS6371951A JP61215861A JP21586186A JPS6371951A JP S6371951 A JPS6371951 A JP S6371951A JP 61215861 A JP61215861 A JP 61215861A JP 21586186 A JP21586186 A JP 21586186A JP S6371951 A JPS6371951 A JP S6371951A
- Authority
- JP
- Japan
- Prior art keywords
- optical recording
- recording medium
- visible light
- adhesive agent
- substrates
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 26
- 239000000853 adhesive Substances 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000001070 adhesive effect Effects 0.000 claims description 30
- 239000011324 bead Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 16
- 230000006866 deterioration Effects 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 230000002542 deteriorative effect Effects 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 19
- 125000006850 spacer group Chemical group 0.000 description 8
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 5
- 239000000975 dye Substances 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 150000001786 chalcogen compounds Chemical class 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- -1 tungsten halogen Chemical class 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
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〕
本発明は光ビームにより記録、再生を行うことが可能な
光記録媒体に間する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical recording medium capable of recording and reproducing information using a light beam.
従来より、透明な基板上に、希土類−遷移金属の合金薄
膜、非晶質から結晶質への相転移を利用したカルコゲン
化合物等の還元性酸化物薄膜、ヒートモードの記録媒体
薄膜等の光メモリ材料を成膜し、この記録媒体２枚を該
記録層が対向するように接着した貼り合わせ構造や、記
録媒体に例えばスペーサーを挟み込んで接着したエアー
サンドイッチ構造の光記録媒体が提案されている。Conventionally, optical memory materials such as thin films of rare earth-transition metal alloys, thin films of reducing oxides such as chalcogen compounds that utilize phase transition from amorphous to crystalline, and thin films of heat mode recording media have been produced on transparent substrates. Optical recording media have been proposed, such as a bonded structure in which two recording media are bonded together so that the recording layers face each other, and an air sandwich structure in which the recording medium is bonded with, for example, a spacer sandwiched between the recording media.
この記録媒体の接着には、従来、熱硬化型、二液常温硬
化型、紫外線硬化型等の接着剤が用いられていた。しか
し、熱硬化型の接着剤は、硬化時の熱で記録特性が劣化
してしまうような媒体には使用できない、又、基板材料
にプラスチックを使用した場合、接着剤の硬化温度と基
板材料の熱変形温度の相対的関係によっては基板が変形
したり、記録層と基板の熱膨張率の違いから膜にクラッ
クが発生したりする。Conventionally, adhesives such as a thermosetting type, a two-component room temperature curing type, and an ultraviolet curing type have been used for adhering the recording medium. However, thermosetting adhesives cannot be used for media where the recording characteristics deteriorate due to the heat during curing, and when plastic is used as the substrate material, there are differences between the curing temperature of the adhesive and the substrate material. Depending on the relative relationship between thermal deformation temperatures, the substrate may be deformed, and cracks may occur in the film due to the difference in thermal expansion coefficients between the recording layer and the substrate.
また、二液常温硬化型の接着剤の場合には、主剤と硬化
剤の混合工程が必要であったり、硬化時間が長い等、量
産性が悪いという欠点があった。Further, in the case of a two-component room-temperature curing adhesive, there are drawbacks such as a mixing step of the main ingredient and a curing agent, a long curing time, and poor mass productivity.
一方、紫外線硬化型の接着剤の場合には前述したような
欠点がなく、常温で、しかも短時間で硬化ができるとい
う長所がある。しかしながら紫外線硬化型の接着剤も万
爺とは言えず、使用する基板に紫外線吸収剤が入ってい
たり、カルコゲン化合物や有機色素のように紫外線によ
り劣化するような材料を記録層に使用した場合には、紫
外線硬化型接着剤を記録媒体の接着に使用することがで
きない、又、紫外線とオゾンに対する人体の保護等取扱
い上の注意が必要である。On the other hand, UV-curable adhesives do not have the above-mentioned drawbacks and have the advantage that they can be cured at room temperature and in a short time. However, UV-curable adhesives are not foolproof, and if the substrate used contains UV absorbers, or the recording layer uses materials that deteriorate due to UV rays, such as chalcogen compounds or organic dyes, UV-curable adhesives cannot be used to bond recording media, and care must be taken when handling to protect the human body from UV rays and ozone.
本発明の目的は、紫外線硬化型接着剤のデメリットを取
り除き、なおかつそのメリットをそこなわない形で、光
記録媒体の接着を行えるようにすることである。An object of the present invention is to eliminate the disadvantages of ultraviolet curable adhesives and to make it possible to bond optical recording media without sacrificing their advantages.
すなわち本発明は基板に紫外線吸収剤が入っていても硬
化可能で、記録材料に紫外線により劣化するような物を
使用した場合でも記録媒体を劣化させずに接着でき、又
プラスチック基板を使用しても変形を起こさずに短時間
に量産性良く記録媒体を接着させて、２個の光記録媒体
が、記録層が対向するように接着して構成される光記録
媒体を提供することを目的とするものである。In other words, the present invention can be cured even if the substrate contains an ultraviolet absorber, and even if a recording material that deteriorates due to ultraviolet rays is used, the recording medium can be bonded without deteriorating, and even if a plastic substrate is used. The object of the present invention is to provide an optical recording medium in which two optical recording media are bonded together with their recording layers facing each other, by bonding recording media in a short time and with good mass production without causing deformation. It is something to do.
本発明は基板上に形成された光記録層を含む２個の光記
録媒体が、該記録層が対向する様にして接着して構成さ
れる貼り合わせ構造及びエアーサンドイッチ構造の光記
録媒体において、使用する接着剤に、可視光硬化型接着
剤を用いることを特徴とする光記録媒体である。The present invention provides an optical recording medium having a bonded structure or an air sandwich structure, in which two optical recording media each including an optical recording layer formed on a substrate are bonded together with the recording layers facing each other. The optical recording medium is characterized in that a visible light curing adhesive is used as an adhesive.
本発明に用いる可視光硬化型接着剤としては、可視光に
感光、硬化する材料であれば使用することができる。以
下の表に可視光で架橋するポリ七−材料と、その材料に
使用される増感剤の例を記載する。これらの材料を成分
として含む接着剤であれば使用できるが、これに限定さ
れるものではない。As the visible light curing adhesive used in the present invention, any material that is sensitive to visible light and cured can be used. The table below lists examples of poly7-materials that crosslink with visible light and sensitizers used in the materials. Any adhesive containing these materials as components can be used, but is not limited thereto.
本発明による光記録媒体の接着方法は、上記接着剤とし
て可視光硬化型接着剤を用いて、２枚の記録媒体の記録
層が対向するように直接貼り合わせるか、又は２枚の記
録媒体を内、外周スペーサーを介して接着させあるいは
２枚の記録媒体をスペーサーを使わずに可視光硬化型接
着剤にビーズを混合して中空構造で接着させる。The method for adhering optical recording media according to the present invention is to use a visible light curing adhesive as the adhesive and directly bond two recording media so that their recording layers face each other, or to bond two recording media together so that their recording layers face each other. Either the two recording media are adhered via inner and outer circumferential spacers, or two recording media are adhered in a hollow structure by mixing beads with a visible light curing adhesive without using a spacer.
以下に実施例により本発明を説明する。 The present invention will be explained below with reference to Examples.
実施例−１
第１図に示した貼り合わせ構造の光記録媒体を次のよう
にして製作した。外周１３０■φ、内周１５ｍｍ＜ｌ＋
のドーナツ状のポリカーボネート基板１に真空蒸着装置
を用いて抵抗加熱により反射防１１：層２としてＳｉＯ
を蒸着した後、スパッタリングによりＧｄＴｂＦｅＣｏ
の記録層３を形成した。さらに、この記録層３をおおう
ように、真空蒸着装置を用いて保護層４としてＳｉＯを
３００ＯＡ蒸着した。この記録媒体２ケを用い一方の保
護層４の表面に可視光硬化型接着剤５（オプティカルフ
ァイバー テクノロジー社製０ＦＴＩ−ＶＬＣＡ）を塗
布し、接着剤層を介して保護層が対向するように貼り合
わせ、タングステンハロゲンランプの光を照射して接着
剤５を硬化させた。硬化条件は、４００ ｍＷ／ｃｒｎ
’／ｓｅｃのパワーで１０秒間である。このように、可
視光硬化型接着剤を用いて、紫外線やオゾンの危険にさ
らされることなく短時間に磁気特性の劣化や基板の変形
を起こさずに良好な接着を行なうことができた。Example 1 An optical recording medium having a laminated structure shown in FIG. 1 was manufactured as follows. Outer circumference 130■φ, inner circumference 15mm<l+
An anti-reflection layer 11: layer 2 of SiO
After depositing GdTbFeCo by sputtering,
A recording layer 3 was formed. Furthermore, 300 OA of SiO was deposited as a protective layer 4 using a vacuum deposition apparatus so as to cover this recording layer 3 . Using these two recording media, apply a visible light curing adhesive 5 (0FTI-VLCA manufactured by Optical Fiber Technology Co., Ltd.) to the surface of one of the protective layers 4, and paste them so that the protective layers face each other with the adhesive layer in between. The adhesive 5 was then cured by irradiation with light from a tungsten halogen lamp. Curing conditions are 400 mW/crn
'/sec power for 10 seconds. In this way, by using a visible light curing adhesive, it was possible to achieve good adhesion in a short time without exposure to the dangers of ultraviolet rays or ozone, and without deterioration of magnetic properties or deformation of the substrate.
実施例−２
第２図に示したエアーサンドイッチ構造の光記録媒体を
次のようにして製作した。実施例−１と同じ大きさの紫
外線吸収剤入りポリカーボネート基板６，６°上にポリ
メチン系色素を３％イソプロピルアルコール溶液にして
スピンコードし、約８００Ａの膜厚で記録層７．７′を
成膜した。この基板２枚を記Ｑ層面を内側にして０ 、
５ｍ１１厚のスペーサー８，８゛を挟んで中空構造にし
、実施例−１に用いた可視光硬化型接着剤５で貼り合わ
せた。硬化はタングステンハロゲンランプを使用し４０
０ｍ臀／ｃｒｒｒ’／ｓｅａのパワーで２０秒間である
。従来は、記録材料に染料を使った場合は耐光性が悪く
、紫外線硬化型接着剤は使用しずらかった。Example 2 An optical recording medium having an air sandwich structure shown in FIG. 2 was manufactured as follows. A 3% isopropyl alcohol solution of polymethine dye was spin-coded onto a polycarbonate substrate 6.6° containing an ultraviolet absorber of the same size as in Example 1 to form a recording layer 7.7' with a film thickness of about 800A. It was filmed. Place these two boards with the Q layer side inside,
A hollow structure was formed by sandwiching spacers 8,8' with a thickness of 5 m11, and the pieces were bonded together using the visible light curing adhesive 5 used in Example-1. Curing is done using a tungsten halogen lamp.
20 seconds with a power of 0m hip/crrr'/sea. Conventionally, when dyes were used in recording materials, they had poor light resistance, making it difficult to use UV-curable adhesives.
又、記録材料を光から保護する為に基板内に紫外線吸収
剤を入れた場合には、接着剤が硬化せず使用できなかっ
た。しかしながら今回のように可視光硬化型接着剤を使
った場合には、紫外線吸収剤入りの基板を使用しても接
着剤を短時間に作業性良く硬化することができ、染料に
対するアタックもほとんどない、又、貼合せ後も、基板
が紫外線をカットする為、紫外線に対する耐光性が問題
となるような材料を使った媒体は耐光性が向上する。Furthermore, when an ultraviolet absorber was placed inside the substrate to protect the recording material from light, the adhesive did not harden and could not be used. However, when using a visible light curing adhesive as in this case, the adhesive can be cured quickly and with good workability even when using a substrate containing an ultraviolet absorber, and there is almost no attack on dyes. Furthermore, since the substrate blocks ultraviolet rays even after lamination, the light resistance of media made of materials for which light resistance to ultraviolet rays is a problem is improved.
実施例−３
第３図に示したエアーサンドイッチ構造の光記録媒体を
次のようにして製作した。記録層７゜７′の成膜までは
実施例−２と同様にし、その後記録媒体の記録層７側に
直径０．５ｍｍのガラスピーズ入り可視光硬化型接着剤
９を実施例−２のスペーサーの代わりに滴下し、もう一
方の記録媒体を中空構造で貼り合わせた。Example 3 An optical recording medium having an air sandwich structure shown in FIG. 3 was manufactured as follows. The process up to the formation of the recording layer 7゜7' was carried out in the same manner as in Example-2, and then the visible light curing adhesive 9 containing glass beads with a diameter of 0.5 mm was applied to the recording layer 7 side of the recording medium as the spacer of Example-2. Instead, the other recording medium was attached with a hollow structure.
このように製作した光記録媒体は、実施例−２で説明し
た可視光硬化型接着剤使用によるメリットの他に、スペ
ーサーの代わりにビーズの径で媒体の間隔を規制してい
る為、コスト的に有利でありスペーサーの位置合わせ工
程が不要となり、作業性がいちだんと向上する。The optical recording medium manufactured in this way has the advantage of using a visible light curing adhesive as explained in Example 2, and is also cost effective because the distance between the media is regulated by the diameter of the beads instead of a spacer. This eliminates the need for a spacer alignment process, further improving work efficiency.
以上説明したように、本発明による接着剤を用いれば、
記録特性の劣化や基板の変形を起こさずに良好な接着を
行うことができ、したがって安価で信頼性の高い光記録
媒体を提供することができる。As explained above, if the adhesive according to the present invention is used,
Good adhesion can be achieved without deterioration of recording characteristics or deformation of the substrate, and therefore an inexpensive and highly reliable optical recording medium can be provided.
第１．第２、第３図は本発明による光記録媒体を模式的
に示した側断面図である。
１・・・・・・基板
２０．、・・０反射防止層
３・・・・・・記録層
４・・・・・・保護層
５・・・・・・接着層
６．６゛・・・紫外線吸収剤入り基板
７．７゛・・・記録層
８．８°・・・スペーサー
９ ・・・ビーズ入り接着層
特許出願人 キャノン株式会社
代 理 人 若 林 忠第１図
第２図
第３図1st. 2 and 3 are side sectional views schematically showing the optical recording medium according to the present invention. 1...Substrate 20. ,...0 Antireflection layer 3...Recording layer 4...Protective layer 5...Adhesive layer 6.6゛...Substrate containing ultraviolet absorber 7.7゛... Recording layer 8.8° ... Spacer 9 ... Adhesive layer with beads Patent applicant Canon Co., Ltd. Representative Tadashi Wakabayashi Figure 1 Figure 2 Figure 3
Claims (1)
板を、接着剤によって接着して成る光記録媒体において
、 前記接着剤に、可視光硬化型接着剤を用いることを特徴
とする光記録媒体。 ２、前記接着剤にはビーズが添加されており、前記２枚
の基板の間に空間が設けられてなる特許請求の範囲第１
項記載の光記録媒体。[Claims] 1. An optical recording medium formed by adhering two substrates, at least one of which has an optical recording layer formed thereon, with an adhesive, the adhesive comprising a visible light curing adhesive. An optical recording medium characterized in that it is used. 2. Beads are added to the adhesive, and a space is provided between the two substrates.
Optical recording medium described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61215861A JPH0760533B2 (en) | 1986-09-16 | 1986-09-16 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61215861A JPH0760533B2 (en) | 1986-09-16 | 1986-09-16 | Optical recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6371951A true JPS6371951A (en) | 1988-04-01 |
| JPH0760533B2 JPH0760533B2 (en) | 1995-06-28 |
Family
ID=16679487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61215861A Expired - Fee Related JPH0760533B2 (en) | 1986-09-16 | 1986-09-16 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0760533B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007518141A (en) * | 2004-01-16 | 2007-07-05 | イー インク コーポレイション | Process for sealing electro-optic displays |
-
1986
- 1986-09-16 JP JP61215861A patent/JPH0760533B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007518141A (en) * | 2004-01-16 | 2007-07-05 | イー インク コーポレイション | Process for sealing electro-optic displays |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0760533B2 (en) | 1995-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |