JPS615452A - Information recording carrier - Google Patents

Information recording carrier

Info

Publication number
JPS615452A
JPS615452A JP59125914A JP12591484A JPS615452A JP S615452 A JPS615452 A JP S615452A JP 59125914 A JP59125914 A JP 59125914A JP 12591484 A JP12591484 A JP 12591484A JP S615452 A JPS615452 A JP S615452A
Authority
JP
Japan
Prior art keywords
information recording
adhesive
recording film
resin
base material
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
Application number
JP59125914A
Other languages
Japanese (ja)
Inventor
Kunihiro Matsubara
邦弘 松原
Seiji Nishino
清治 西野
Takeo Oota
太田　威夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59125914A priority Critical patent/JPS615452A/en
Publication of JPS615452A publication Critical patent/JPS615452A/en
Pending legal-status Critical Current

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

PURPOSE:To prevent deterioration of a recording film, by joining a resin-based material equipped with a groove for guiding light and optical recording film with another resin-based material by using a bonding agent, whose elastic modulus is smaller than that of the resin-based material, over the entire surface and further applying a reinforcing bonding agent to the innermost and outermost peripheries of the joined part. CONSTITUTION:A groove 2 for guiding light is provided in a disk base material 1a made of polycarbonate resin and an optical recording film 3 is deposited on the surface of the groove 2. The disk base material 1a thus prepared is joined with another disk base material 1b made of similar polycarbonate resin over the entire surface with the optical recording film 3 inward by using a photosetting type elastic bonding agent 6. The innermost and outermost peripheries of the joined part is further bonded and sealed with an epoxy resin 7. A bonding agent having an elastic modulus which is smaller than those of the base materials 1a and 1b is used for the bonding agent 6. Therefore, no exfoliation occurs at the joined part and disk deformation can be minimized even when the external environment changes and, as a result, deterioration of the recording film can be prevented for a long period.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は光学的記録あるーは再生方式に使用される円盤
状の情報記録担体に関するものである。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a disc-shaped information recording carrier used in optical recording or reproduction systems.

従来例の構成とその問題点 光学的記録再生方式においては、回転駆動される円盤状
情報記録担体（以下ディスクと呼ぶ）の光記録層に、情
報信号に対応したレーザ光を照射することにより、光記
録層に光学的な濃淡あるいは凹凸を設けて、情報の記録
・再生を行うもので数μｍの微小信号を記録することが
でき、原理的には光の波長程度の高密度記録が可能な方
式である。Conventional configuration and its problems In the optical recording and reproducing system, the optical recording layer of a rotationally driven disk-shaped information recording carrier (hereinafter referred to as a disk) is irradiated with a laser beam corresponding to an information signal. It records and reproduces information by providing optical shading or unevenness on the optical recording layer, and is capable of recording minute signals of several micrometers, and in principle enables high-density recording on the order of the wavelength of light. It is a method.

最近では、情報化社会の中にあって、オフィスオートメ
ーションやラボラトリ−オートメーション等の合理化が
重要視されてきており、こうした要望に応えるものとし
て、ユーザーが自由に記録再生のできる追加記憶形ディ
スクは最適である。Recently, in the information society, rationalization of office automation, laboratory automation, etc. has become important, and in order to meet these demands, additional storage type disks that allow users to freely record and play back are ideal. It is.

それと同時に高感度の記録媒体を始めとし、高性能な部
品材料が必要であり、外部環境の変化による記録媒体の
劣化を生じないディスク構造が要求される。At the same time, there is a need for high-performance component materials, including a highly sensitive recording medium, and a disk structure that does not cause deterioration of the recording medium due to changes in the external environment.

次に従来から使われているディスクの記録膜劣化の一例
を図面とともに説明する。第１図は、ポリカーボネート
樹脂からなるディスク基材１ａに光案内用の溝２が設け
られており、その上に記録膜３が蒸着されている。これ
らからなるディスク基板１は、同様にポリカーボネート
樹脂からなるディスク基材１ｂと、光硬化型接着剤４に
より全面接合されて−る。Next, an example of the deterioration of the recording film of conventionally used disks will be explained with reference to the drawings. In FIG. 1, a disc base material 1a made of polycarbonate resin is provided with grooves 2 for guiding light, and a recording film 3 is deposited thereon. The disk substrate 1 made of these is bonded over its entire surface to a disk base material 1b made of polycarbonate resin using a photocurable adhesive 4.

このようなディスク基材１ａ　、１ｂが射出成形法で製
造された場合は特に、内部応力を有して込るものが多く
、高温高湿な環境下で熱ひずみを発生し易い。したがっ
て、２枚のディスク基材を接合する接着剤４が剛性の大
きいものであると、例えば第２図ａ、ｂに示されるよう
に、ディスク基材１ａと記録膜３０間もしくは記録膜３
と接着剤４との間に微小な剥離ｅｓａ、６ｂを発生する
ことがある。これは剛性の大きい接着剤がディスク基材
の熱ひずみに追従できず、微小な剥離を発生す名ことに
よって安定しようとするからである。これらの微小剥離
ｓａ、５ｂはそれぞれディスク基材と記録膜、あるいは
記録膜と接着剤の間の接着力の違いによって発生する場
所が異なる。Particularly when such disk base materials 1a and 1b are manufactured by injection molding, they often contain internal stress and tend to generate thermal strain in a high temperature and high humidity environment. Therefore, if the adhesive 4 that joins the two disc base materials has high rigidity, for example, as shown in FIGS.
A minute peeling esa, 6b may occur between the adhesive 4 and the adhesive 4. This is because the highly rigid adhesive cannot follow the thermal distortion of the disk base material, and attempts to stabilize itself by causing minute peeling. These minute peels sa and 5b occur at different locations depending on the difference in adhesive force between the disk base material and the recording film, or between the recording film and the adhesive.

一度こうした微小剥離を発生すると、剥離は助長され易
く、周囲に拡大する可能性を十分もっている。これは初
期の剥離を発生させる応力と、剥離の存在しているもの
を押し開く応力とではメカニズムが異なり、後者の方が
より小さい力で発生させることが−できるからである。Once such minute peeling occurs, the peeling is likely to be accelerated and has a good possibility of spreading to the surrounding area. This is because the stress that causes initial peeling and the stress that forces apart existing peeling have different mechanisms, and the latter can be generated with a smaller force.

このような微小剥離は、初期は真空状態であるだめ、デ
ィスクの最外周部もしくは最内周部の外気に触れている
部分との通気が発生すると、−瞬にして剥離部内に外気
を取り入れることになる。This type of micro-separation is initially under a vacuum condition, but when ventilation occurs between the outermost or innermost part of the disk that is in contact with the outside air, the outside air can instantly be drawn into the delamination area. become.

したがって、外気の環境が高温高湿な条件下であ　　　
　　　　　１ｊると、湿度の影響を受は易い材料の場合
には、酸化をし、劣化が促進されることが考えられる。Therefore, if the outside air environment is hot and humid,
1j, in the case of materials that are easily affected by humidity, it is thought that oxidation occurs and deterioration is accelerated.

以上は、記録膜が比較的透水性の小さいポリカーボネー
ト樹脂で外気から遮断保護されて−ても、剥離を生じた
場合はその効果は消滅し、ディスクの信頼性の点で重大
な問題となる。もし、剥離の状態が拡大せず微小剥離の
ままであったとしても記録・再生時のレーザ光の照射に
対してはその影響を寸ぬかれず、特性の低下からディス
クとしての信頼性を失うことになる。As described above, even if the recording film is shielded from the outside air by a polycarbonate resin with relatively low water permeability, if peeling occurs, the effect disappears, which poses a serious problem in terms of disk reliability. Even if the peeling does not expand and remains a minute peel, it will not be completely affected by laser light irradiation during recording and playback, and the reliability of the disc will be lost due to the deterioration of its characteristics. become.

発明の目的 本発明は以上のような欠点を除去し、高温高湿な環境下
でも接合面の剥離を発生せず、記録膜の劣化を最小限に
押える信頼性の高い情報記録担体を従供するものである
。Purpose of the Invention The present invention eliminates the above-mentioned drawbacks and provides a highly reliable information recording carrier that does not cause peeling of the bonding surface even in a high temperature and high humidity environment and minimizes deterioration of the recording film. It is something.

発明の構成 本発明は、少くとも一方に光案内用の溝と光記録膜を有
する２枚のディスク基材を弾性係数の小さい歪吸収性の
接着剤を用いて全面接合するとともに、接合部の最内周
と最外周をエポキシ系樹脂で補強すること尾より、接合
面での剥離を防止し、光記録膜に対しても信頼性の高い
ディスクの製作を可能にするものである。Structure of the Invention The present invention involves bonding two disk substrates each having an optical guiding groove and an optical recording film on at least one side using a strain-absorbing adhesive with a small elastic modulus, and also By reinforcing the innermost and outermost peripheries with epoxy resin, it is possible to prevent peeling at the bonding surface and to manufacture a disk with high reliability for the optical recording film.

実施例の説明 本発明の第１の実施例を図面とともに説明する。Description of examples A first embodiment of the present invention will be described with reference to the drawings.

第３図において、第１図、第２図と同一物は同一番号を
付して説明する。第３図において、ポリカーボネート樹
脂から在るディスク基材１ａに光案内用の溝２が設けて
あり、その表面に光記録膜３が蒸着されている。これら
からなるディスク基板１が、同様にポリカーボネート樹
脂からなるディスク基材１ｂと光硬化型の弾性接着剤６
により、（光記録膜３を内側にして全面接合されている
。さらに接合部の最内周と最外周はエポキシ系樹脂７で
接着封止されている。In FIG. 3, the same parts as those in FIGS. 1 and 2 will be described with the same reference numerals. In FIG. 3, a disc base material 1a made of polycarbonate resin is provided with grooves 2 for guiding light, and an optical recording film 3 is deposited on the surface thereof. A disk substrate 1 made of these is made of a disk base material 1b made of polycarbonate resin and a photocurable elastic adhesive 6.
(The entire surface is bonded with the optical recording film 3 facing inside. Furthermore, the innermost and outermost peripheries of the bonded portion are adhesively sealed with epoxy resin 7.

ここに光案内用の溝２は射出成形法によりディスク基材
と一体にして製造する方が低コスト化のだめにも必要で
ある。しかしながら、こうしたディスク基材は熱ひずみ
による内部応力が残留し易く、高温高湿な条件下では逆
にこの応力によるひずみを発生する。In order to reduce costs, it is necessary to manufacture the optical guide groove 2 integrally with the disk base material by injection molding. However, internal stress due to thermal strain tends to remain in such a disk base material, and under high temperature and high humidity conditions, this stress causes strain.

しかしながら、この実施例の構成によれば、弾性接着剤
６そのものに弾性を有しているため、ディスク基材１ａ
に微小なひずみが生じても、第４図に示すように弾性接
着剤６がひずみに追従ｊ〜で動き、剥離を発生すること
がない。However, according to the configuration of this embodiment, since the elastic adhesive 6 itself has elasticity, the disk base material 1a
Even if a minute strain occurs, the elastic adhesive 6 moves in a manner that follows the strain, as shown in FIG. 4, and no peeling occurs.

また、一般にディスク基材１ａと接合する接着剤の熱膨
張係数が全く同一のものを選択することは困難であり、
高温になるとそ五ぞれの伸びの量が異なるだめ応力を発
生し、剛性の強い接着剤では剥離を発生し易い状態とな
る。Additionally, it is generally difficult to select an adhesive that has exactly the same coefficient of thermal expansion as the adhesive bonded to the disk base material 1a.
When the temperature reaches high temperatures, the different amounts of elongation generate stress, and adhesives with high rigidity tend to peel off.

これと同様のことがディスク基材の吸湿による膨潤の場
合にも言え、高温高湿な環境下では、熱膨張と膨潤の両
者による影響が最も顕著となる。The same thing can be said in the case of swelling due to moisture absorption of the disk base material, and in a high temperature and high humidity environment, the effects of both thermal expansion and swelling are most significant.

このような場合にも、第６図に示すように弾性接着剤６
を用いていれば、ひずみを吸収することが可能であり、
剥離の発生を防止することができる。Even in such a case, as shown in FIG.
It is possible to absorb strain by using
Occurrence of peeling can be prevented.

例えば、第５図に示すディスク基材の熱膨張や膨潤によ
る伸び８が、弾性接着剤６の熱膨張や膨潤による伸び９
よりも大きい場合には、伸びの量の差に対する応力差は
弾性接着剤６に内部応力１０として蓄えられる。弾性接
着剤の弾性係数は小さいため、変形は大きくても内部応
力１０は小さく、いずれの境界面でも剥離を発生するに
は至らない。For example, the elongation 8 due to thermal expansion and swelling of the disk base material shown in FIG. 5 is different from the elongation 9 due to thermal expansion and swelling of the elastic adhesive 6.
, the stress difference due to the difference in the amount of elongation is stored in the elastic adhesive 6 as an internal stress 10. Since the elastic modulus of the elastic adhesive is small, even if the deformation is large, the internal stress 10 is small and does not cause peeling at any of the interfaces.

もちろんこの場合、弾性接着剤のディスク基材や光記録
膜等への接着力が小さすぎると、剥離を発生することが
考えられるが、弾性接着剤の弾性係数ＥＫｐ／−が小さ
ければα＝Ｅε（α：内部応力、ε：ひすみ）の関係か
ら内部応力も小さくなり、これに耐えうる接着力をもつ
弾性接着剤を使用することは比較的容易である。Of course, in this case, if the adhesive strength of the elastic adhesive to the disk base material, optical recording film, etc. is too small, peeling may occur, but if the elastic coefficient EKp/- of the elastic adhesive is small, α=Eε Due to the relationship (α: internal stress, ε: strain), the internal stress is also reduced, and it is relatively easy to use an elastic adhesive that has adhesive strength that can withstand this stress.

さらに本実施例では、接合部の内外周をエポキシ系樹脂
７で接着補強をしているだめ、接合面での微小剥離に対
しては弾性接着剤で防止し、ディスク全体の変形に対し
てはエポキシ系樹脂で最小限に押える役割を果している
。弾性接着剤のみの場合には、微小なひずみに追従する
ことができる反面、ディスク全体の比較的大きい変形に
対しても追従し易まため・そ１を規制する役目として”
　　　　　　　１ボキシ系樹脂を用いている。Furthermore, in this embodiment, the inner and outer peripheries of the joint are reinforced with epoxy resin 7, so the elastic adhesive prevents minute peeling at the joint surface and prevents deformation of the entire disk. The epoxy resin plays a role in keeping it to a minimum. If only elastic adhesive is used, it can follow minute distortions, but it also easily follows relatively large deformations of the entire disk.
1 boxy resin is used.

また熱膨張や膨潤による影響はディスク基材が射出成形
法で製造された場合のみならず、注型成形法等の製造法
で作られたディスク基材の場合にも同様の現象が発生す
る。Further, the effects of thermal expansion and swelling occur not only when the disk base material is manufactured by injection molding, but also when the disk base material is manufactured by a manufacturing method such as cast molding.

この実施例の弾性接着剤の弾性に関する物理定数として
は、縦弾性係数、横弾性係数９曲げ弾性係数等があるが
、これらの値の小さいものほど弾力性にすぐれているこ
とが言える。実験によれば、これらの弾性係数ＡＫｇ／
−としては１０　Ｋｙ　／−≦Ａ≦２０ＱＫノ／ｍｊで
あれば、特に問題のないものが得られた。　　゛ また弾性接着剤の弾性係数は少くともディスク基材の弾
性係数よりも小さいことが必要であり、両者の差として
もある程度以上大きい方がより効果が大きいことが認め
られた。補強用接着剤の弾性係数はディスク基材とほぼ
同程度のものを用いればよく、この接着剤の種類として
は、エポキシ系樹脂の他に、エポキシアクリレート系樹
脂、アクリル系樹脂等がある。The physical constants related to the elasticity of the elastic adhesive in this example include a longitudinal elastic modulus, a transverse elastic modulus, 9, and a bending elastic modulus, and it can be said that the smaller these values are, the better the elasticity is. According to experiments, these elastic modulus AKg/
- as long as 10 Ky/-≦A≦20QK/mj, a product with no particular problem was obtained. Furthermore, it is necessary that the elastic modulus of the elastic adhesive is at least smaller than that of the disk base material, and it has been found that the greater the difference between the two, the greater the effect. The elastic modulus of the reinforcing adhesive may be approximately the same as that of the disk base material, and types of this adhesive include, in addition to epoxy resins, epoxy acrylate resins, acrylic resins, and the like.

次に本発明の第２の実施例を図面とともに説明する。第
６図は、ポリカーボネート樹脂からなる２つのディスク
基材１ａ、１ｂに光案内用の溝２ａ　、２ｂが設けられ
、その表面に光記録膜３ａ。Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 6 shows two disc base materials 1a and 1b made of polycarbonate resin, provided with grooves 2a and 2b for guiding light, and an optical recording film 3a on the surface thereof.

３ｂが蒸着されている。これらからなる２つのディスク
基材１，１１が弾性接着剤６で全面接合され、接合面の
最内周および最外周をエポキシ系樹脂７により接着封止
された構成で、接合面を中心に上下対称となっている。3b is deposited. The two disk base materials 1 and 11 made of these are fully bonded with an elastic adhesive 6, and the innermost and outermost peripheries of the bonded surfaces are adhesively sealed with an epoxy resin 7. It is symmetrical.

こうした構成のディスクでは、光記録膜が光の透過を妨
げるだめ、弾性接着剤６としては光硬化型の接着剤を使
うことができない。したがって、シリコンゴムのような
常温硬化型接着剤やホットメルト型接着剤が好ましい。In a disk having such a configuration, a photocurable adhesive cannot be used as the elastic adhesive 6 because the optical recording film prevents the transmission of light. Therefore, a room temperature curing adhesive such as silicone rubber or a hot melt adhesive is preferable.

このような接着剤の場合でも、弾性係数の小さいものを
使用すれば、熱膨張や膨潤によるひずみを吸収すること
ができ、高温高湿な環境下でも剥離を発生することがな
い。Even in the case of such an adhesive, if one with a small elastic modulus is used, the strain caused by thermal expansion and swelling can be absorbed, and peeling will not occur even in a high temperature and high humidity environment.

また、エポキシ系樹脂についてもディスク全体の変形に
対して第１の実施例と同様な効果が得られる。Furthermore, the same effect as in the first embodiment can be obtained with respect to the deformation of the entire disk using the epoxy resin.

以上の構成による情報記録担体は、その材質が有機高分
子からなる場合に特に有効であり、その−例としては、
ポリカーボネート、アクリル樹脂（ＰＭＭＡ　）の他に
、塩化ビニル、ポリスチレン。The information recording carrier having the above structure is particularly effective when the material thereof is made of an organic polymer; for example,
In addition to polycarbonate and acrylic resin (PMMA), vinyl chloride and polystyrene.

ポリエチレン、ポリエステル、アセテート等がある。There are polyethylene, polyester, acetate, etc.

なお、本発明における光記録膜の材料は、レーザー光の
照射により光吸収係数あるいは光吸収係数と屈折率の両
方が変化するものが必要であシ、その−例として、Ｔｅ
０ｘ（ｘ＃１．０）（Ｔｅｏ２とＴ。The material of the optical recording film in the present invention must be one whose light absorption coefficient or both the light absorption coefficient and the refractive index change upon irradiation with laser light.
0x (x#1.0) (Teo2 and T.

との混合物）を主成分とする薄膜を設けたものがある。Some products have a thin film mainly composed of a mixture of

これらの薄膜としては、Ｇｅ１．Ｔｅ８１Ｓｂ２Ｓ２．
へ５２８３等のアモルファス薄膜が使われる。These thin films include Ge1. Te81Sb2S2.
An amorphous thin film such as 5283 is used.

発明の効果 以上のように本発明によれば、簡単な構成で、外部環境
の変化に対しても接合面の剥離がない上にディスク変形
も少なく、長期間画像品質の保証ができる信頼性の高い
情報記録担体を得るために大きな効果を有するものであ
る。Effects of the Invention As described above, the present invention has a simple structure, has no peeling of the joint surface even with changes in the external environment, has little disk deformation, and is reliable enough to guarantee long-term image quality. This has a great effect in obtaining a high quality information recording carrier.

【図面の簡単な説明】[Brief explanation of drawings]

第１因は従来例における情報記録担体の断正面図、第２
図ａ、ｂは従来例における情報記録担体が剥離を発生し
た状態を示す断正面図、第３図は本発明の第１の実施例
における情報記録担体の断正面図、第４図は本発明の第
１の実施例における熱ひずみの吸収状態−例を示す断正
面図、第６図は本発明の第１の実施例にお込て熱膨張や
膨潤によるひずみの吸収状態を示す断正面図、第６図は
本発明の第２の実施例における情報記録担体の断正面図
である。 １ａ・・・・・・ディスク基材、１ｂ・・・・・ディス
ク基材、２・・・・・・光案内用の溝、３・・・・・・
光記録膜、６・・・・・・弾性接着剤、７・・・・補強
用接着剤。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名＋１ 第１図 第　２　図 第３図The first factor is the cross-sectional front view of the information recording carrier in the conventional example;
Figures a and b are cross-sectional front views showing a state in which an information recording carrier in a conventional example has peeled off, Figure 3 is a cross-sectional front view of an information recording carrier in a first embodiment of the present invention, and Figure 4 is a cross-sectional front view of the information recording carrier in the first embodiment of the present invention. FIG. 6 is a sectional front view showing an example of the absorption state of thermal strain in the first embodiment of the present invention, and FIG. 6 is a sectional front view showing the absorption state of distortion due to thermal expansion and swelling in the first embodiment of the present invention. , FIG. 6 is a sectional front view of an information recording carrier in a second embodiment of the present invention. 1a... Disc base material, 1b... Disc base material, 2... Groove for light guide, 3......
Optical recording film, 6... Elastic adhesive, 7... Reinforcing adhesive. Name of agent: Patent attorney Toshio Nakao and 1 other person +1 Figure 1 Figure 2 Figure 3

Claims (6)

【特許請求の範囲】[Claims] （１）少くとも一方に光案内用の溝および情報記録面を
有する２つの樹脂基材を設け、これらの樹脂基材の弾性
係数よりも小さい弾性係数を持つ接着剤により、前記情
報記録面を内側にして前記両樹脂基材を全面接合し、こ
の接合部の最内周および最外周に補強用接着剤を塗布し
た情報記録担体。(1) Two resin base materials each having a groove for light guide and an information recording surface on at least one side are provided, and the information recording surface is bonded to the resin base material using an adhesive having an elastic modulus smaller than that of these resin base materials. An information recording carrier in which both of the resin base materials are fully bonded on the inside, and a reinforcing adhesive is applied to the innermost and outermost peripheries of this bonded portion. （２）情報記録面として、光吸収性の半透明膜を用いた
特許請求の範囲第１項記載の情報記録担体。(2) The information recording carrier according to claim 1, which uses a light-absorbing semitransparent film as the information recording surface. （３）接着剤として、歪吸収性の弾性体からなる接着剤
を用いた特許請求の範囲第１項または第２項記載の情報
記録担体。(3) The information recording carrier according to claim 1 or 2, wherein an adhesive made of a strain-absorbing elastic material is used as the adhesive. （４）接着剤として、光硬化性樹脂を用いた特許請求の
範囲第１項または第２項記載の情報記録担体。(4) The information recording carrier according to claim 1 or 2, wherein a photocurable resin is used as the adhesive. （５）補強用接着剤として、エポキシ系樹脂を用いた特
許請求の範囲第１項または第２項記載の情報記録担体。(5) The information recording carrier according to claim 1 or 2, wherein an epoxy resin is used as the reinforcing adhesive. （６）情報記録面として、レーザ光の照射により光吸収
係数または光吸収係数と屈折率の両方が変化する材料を
用いた特許請求の範囲第２項記載の情報記録担体。(6) The information recording carrier according to claim 2, wherein the information recording surface is made of a material whose light absorption coefficient or both the light absorption coefficient and the refractive index change upon irradiation with laser light.
JP59125914A 1984-06-19 1984-06-19 Information recording carrier Pending JPS615452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59125914A JPS615452A (en) 1984-06-19 1984-06-19 Information recording carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59125914A JPS615452A (en) 1984-06-19 1984-06-19 Information recording carrier

Publications (1)

Publication Number Publication Date
JPS615452A true JPS615452A (en) 1986-01-11

Family

ID=14922046

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59125914A Pending JPS615452A (en) 1984-06-19 1984-06-19 Information recording carrier

Country Status (1)

Country Link
JP (1) JPS615452A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63837A (en) * 1986-06-19 1988-01-05 Sharp Corp Manufacture of disk shaped storage medium
JPH0246539A (en) * 1988-08-09 1990-02-15 Nec Corp Optical disk
JPH02156434A (en) * 1988-12-09 1990-06-15 Toshiba Emi Ltd Laminated disk

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63837A (en) * 1986-06-19 1988-01-05 Sharp Corp Manufacture of disk shaped storage medium
JPH0246539A (en) * 1988-08-09 1990-02-15 Nec Corp Optical disk
JPH02156434A (en) * 1988-12-09 1990-06-15 Toshiba Emi Ltd Laminated disk

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