JPH02203439A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPH02203439A JPH02203439A JP1024363A JP2436389A JPH02203439A JP H02203439 A JPH02203439 A JP H02203439A JP 1024363 A JP1024363 A JP 1024363A JP 2436389 A JP2436389 A JP 2436389A JP H02203439 A JPH02203439 A JP H02203439A
- Authority
- JP
- Japan
- Prior art keywords
- optical recording
- recording layer
- layer
- medium
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 34
- 230000001678 irradiating effect Effects 0.000 claims abstract 3
- 239000010409 thin film Substances 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 30
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000975 dye Substances 0.000 description 4
- -1 polyethylene terephthalate Polymers 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 238000007740 vapor 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、光学的手段による記録媒体に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a recording medium by optical means.
（従来の技術）
従来の光学的記録媒体は、透明な支持基板上に光記録層
を形成し、光記録層側より磁界を印加し、透明支持基板
の光記録層の設けられていない面側よりレーザー光を照
射するものである。(Prior art) In conventional optical recording media, an optical recording layer is formed on a transparent support substrate, a magnetic field is applied from the optical recording layer side, and a magnetic field is applied from the side of the transparent support substrate where the optical recording layer is not provided. It irradiates more laser light.
（発明が解決しようとする問題点）
従来の光記録媒体においては、支持基板を通してレー、
ブー光が記録層に達する必要があり、支持基板としては
、透明性が必要であり、さらにその他の光学的特性にお
いても優れた性質のものでなければならず、選択される
素材が限定される。さらにこれら選択された素材は、と
きには、他の支持体としての必要特性を犠牲にしたもの
でもあり、耐久性、信頓性等の点で問題点を有していた
。(Problems to be Solved by the Invention) In conventional optical recording media, laser beams and
Since the light needs to reach the recording layer, the supporting substrate must be transparent and have other excellent optical properties, which limits the materials that can be selected. . Furthermore, these selected materials sometimes sacrifice other properties necessary for the support, and have problems in terms of durability, reliability, etc.
特に、軽小短薄の媒体を追及するときには、支持体に、
記録層の形成、案内溝の形成等により、応力が加わり記
録媒体が反ってしまう等の欠点が、多発するようになる
。In particular, when pursuing light, small, short, and thin media,
Due to the formation of the recording layer, the formation of guide grooves, etc., stress is applied and defects such as warping of the recording medium occur frequently.
（問題点を解決するための手段）
本発明者は、上記の光記録媒体のかかえる問題点を解決
し、す・ぐれた諸特性、特に軽小短薄の媒体における反
り防止に優れたものを得るべく検討し本発明に到達した
。(Means for Solving the Problems) The present inventor has solved the problems of the above-mentioned optical recording media, and has developed a medium with excellent properties, especially in preventing warping in light, small, short, and thin media. The present invention was achieved after conducting research to obtain the above.
すなわち本発明は、薄葉支持体の一方の面に光記録層を
形成し、該光記録層側より集光されたレーザー光を照射
し、薄葉支持体の他の面側より変調磁界を印加すること
により、情報を記録、再生または消去する光記録媒体で
あって、薄葉支持体の光記録層を形成した面の反対側の
他の面に反り防止層を設けたことを特徴とする光記録媒
体である。本発明における薄葉支持体としては、特に限
定されるものではなく、透明でも不透明でもよい。That is, in the present invention, an optical recording layer is formed on one surface of a thin-film support, a focused laser beam is irradiated from the optical recording layer side, and a modulated magnetic field is applied from the other surface of the thin-film support. An optical recording medium for recording, reproducing or erasing information, characterized in that an anti-warping layer is provided on the other surface of the thin support opposite to the surface on which the optical recording layer is formed. It is a medium. The thin film support in the present invention is not particularly limited, and may be transparent or opaque.
これらの素材としては、ポリカーボネート、ポリアクリ
レート、ポリエチレンテレフタレート主体のポリエステ
ル、ポリエチレンナフタレート主体のポリエステル、ポ
リフェニレンスルフイツト、ポリアミド、ポリイミド、
繊維素系樹脂、等の重合体が挙げられる。These materials include polycarbonate, polyacrylate, polyester based on polyethylene terephthalate, polyester based on polyethylene naphthalate, polyphenylene sulfite, polyamide, polyimide,
Examples include polymers such as cellulose resins.
また前記素材に、短繊維、長繊維、ウィスカー薄板、粒
子等の補強材を光記録媒体としての性能を損なわない範
囲で適宜、添加または挿入してもよい。In addition, reinforcing materials such as short fibers, long fibers, thin whisker plates, particles, etc. may be added or inserted into the material as appropriate to the extent that the performance as an optical recording medium is not impaired.
本発明に使用されるより好ましい、薄葉支持体としては
、厚みが１０μｍ〜１０００μｍのちのであり、さらに
好ましくは１０〜２５０μｍのものである。More preferably, the thin support used in the present invention has a thickness of 10 to 1000 μm, more preferably 10 to 250 μm.
本発明に用いられる光記録層としては、有機色素を主体
とする層、例えば種々のフタロシアニン、ナフタロをシ
アニン等のアザアヌレン系色素、スクワリリウーム系色
素、ポリメチン系色素等の色素を主体とする層、また希
土類元素−遷移金属系の合金の薄膜等の無機の薄膜等が
例として挙げられる。本発明に用いられる反り防止層と
しては、特に限定されるものではないが、すくなくとも
薄葉支持体の剛性率よりも高い剛性率を有するものが好
ましい。これらの例としては、ＡＩ□０３、ムＩＮ Ｎ
５１３Ｎ４．５Ｉ０２、Ａｇ％ Ａｕ１ｐｔ等の無機
物が挙げられ、これらの単独または複合体が用いられる
。The optical recording layer used in the present invention includes a layer mainly containing an organic dye, for example, a layer mainly containing azaannulene dyes such as various phthalocyanines, naphthalocyanines, squalylium dyes, polymethine dyes, etc. Examples include inorganic thin films such as thin films of rare earth element-transition metal alloys. The anti-warp layer used in the present invention is not particularly limited, but it is preferably one having a rigidity at least higher than that of the thin support. Examples of these are AI□03, MIN N
Examples include inorganic substances such as 513N4.5I02 and Ag% Au1pt, and these may be used alone or in combination.
これらの反り防止層は、記録層の設けられた支持体の反
対側の面に設けられるが、その厚みは好ましくは、５０
’Ａ〜５μｍであり、さらに好ましくは１００Ａ〜１μ
ｍであり、その配設のされ方は、支持基体の全面でもよ
く、部分的な面にでもよい。These warpage prevention layers are provided on the opposite side of the support provided with the recording layer, and their thickness is preferably 50 mm.
'A~5μm, more preferably 100A~1μm
m, and it may be disposed on the entire surface of the supporting base or on a partial surface.
この反り防止層の設は方は特に限定されず、蒸着法、ス
パッタリング法、接着剤を介しての貼り合わせ、または
塗布による方法が挙げられる。The method of providing this anti-warpage layer is not particularly limited, and examples thereof include vapor deposition, sputtering, bonding with an adhesive, and coating.
好ましくは、記録層の形成に採用された方法と同一また
は類似の方法が、反り防止層形成に用いられる。Preferably, the same or similar method used to form the recording layer is used to form the anti-warpage layer.
本発明の薄葉支持体の片面に光記録層を設け、その記録
層を配しない他の面に、反り防止層を設けることで、案
内溝の形成、記録層の形成等による支持体に生じる応力
を緩和し、また応用による反りを防止することが出来、
光記録媒体の機械的特性を向上し、耐久性、信頼性を向
上することができる。By providing an optical recording layer on one side of the thin support of the present invention and providing a warpage prevention layer on the other side on which no recording layer is provided, stress generated in the support due to the formation of guide grooves, the formation of the recording layer, etc. It is possible to alleviate this and prevent warping due to application.
The mechanical properties of the optical recording medium can be improved, and the durability and reliability can be improved.
第１図に本発明の実施例の概略図を示す。１．は保護層
であり（Ａｌ１％１６００Ａ厚み）、ｚはＴｂ−Ｆｅ−
Ｇ。FIG. 1 shows a schematic diagram of an embodiment of the present invention. 1. is a protective layer (Al1% 1600A thickness), z is Tb-Fe-
G.
合金の光記録膜であり（９００Ａ厚み）、３．はＡＩＮ
・５１３Ｎ４の混合膜の保護膜であり（８００Ａ厚み）
、屯は薄葉支持体であるポリイミド（カプトン、厚み
１２０ μｍ）であり、５．はＡ１．Ｏ，の６００Ａ厚
さと５１３Ｎ４の６０ＯＡ厚さの２層を積層した反り防
止層である。3. It is an alloy optical recording film (900A thickness). is AIN
・Protective film of 513N4 mixed film (800A thickness)
, the ton is made of polyimide (Kapton, thickness
120 μm), and 5. is A1. This is a warpage prevention layer made by laminating two layers: O., 600A thick and 513N4, 60OA thick.
比較例として前記実施例における５、の反り防止層を設
けないこと以外は、同様に層を配設した。As a comparative example, the layers were arranged in the same manner as in Example 5, except that the anti-warpage layer was not provided.
実施例の光記録媒体は、比較例にくらべて、製造した多
数の媒体において反りのない製品の収率が大であり、か
つ使用中における反りも殆んどなかったＯ
（発明の効果）
本発明における薄葉支持体の片面に光記録層を配し、他
面に反り防止層を配した光記録媒体は、きわめて薄い支
持体を用いており、かつ光記録層側からレーザー光を照
射して、情報の記録、読み出しく再生）、消去を行うの
で、有効な磁場印加が可能であり、光学的に良好でない
が他の特性にすぐれた素材を支持体として用いることが
出来、低ノイズ、低クロストーク、細密ビットの形成な
どが可能となる・。さらに、案内溝の形成を支持体に設
す際にも、ホットスタンプで可能となり低コスト化が可
能であり、媒体と磁界印加コイル間の距離を高精度でコ
ントロールする必要が少なく、また高安定な（対Ｃ８Ｓ
特性）光記録媒体となる。Compared to the comparative example, the optical recording medium of the example had a higher yield of products without warping in a large number of manufactured media, and there was almost no warping during use.O (Effect of the invention) The optical recording medium of the invention in which an optical recording layer is arranged on one side of a thin support and an anti-warping layer is arranged on the other side uses an extremely thin support, and the optical recording medium is irradiated with laser light from the optical recording layer side. Because it performs information recording, reading, reproducing), and erasing, it is possible to apply an effective magnetic field, and materials that are not optically good but have excellent other properties can be used as the support, resulting in low noise and low Crosstalk, formation of fine bits, etc. are possible. Furthermore, when forming guide grooves on the support, it is possible to use hot stamping, which reduces costs, reduces the need to control the distance between the medium and the magnetic field application coil with high precision, and provides high stability. (vs. C8S
Characteristics) Becomes an optical recording medium.
第１図は実施例１の層構成の概略を示す図であり、第２
図は本発明における信号書きこみの概略を示す図であり
、第３図は同じく信号読み出しの概略を示す図であり、
第４図は同じく信号消去の概略を示す図である。FIG. 1 is a diagram schematically showing the layer structure of Example 1, and FIG.
The figure is a diagram showing an outline of signal writing in the present invention, and FIG. 3 is a diagram showing an outline of signal reading,
FIG. 4 is a diagram schematically showing signal erasure.
Claims (1)
記録層側よりレーザー光を照射し、薄葉支持体の他の面
側より変調磁界を印加することにより情報を記録、再生
または消去する光記録媒体であって、薄葉支持体の光記
録層を形成した面の反対側の他の面に反り防止層を設け
たことを特徴とする光記録媒体。(1) Forming an optical recording layer on one side of a thin film support, recording information by irradiating a laser beam from the optical recording layer side and applying a modulated magnetic field from the other side of the thin film support, 1. An optical recording medium for reproduction or erasing, characterized in that a warpage prevention layer is provided on another surface of a thin support opposite to the surface on which an optical recording layer is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1024363A JPH02203439A (en) | 1989-02-01 | 1989-02-01 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1024363A JPH02203439A (en) | 1989-02-01 | 1989-02-01 | Optical recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02203439A true JPH02203439A (en) | 1990-08-13 |
Family
ID=12136116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1024363A Pending JPH02203439A (en) | 1989-02-01 | 1989-02-01 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02203439A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05274730A (en) * | 1992-03-30 | 1993-10-22 | Nec Corp | Veneer optical disk for magneto-optical recording and its recording and reproducing method |
| US5293373A (en) * | 1990-08-29 | 1994-03-08 | Mitsubishi Denki Kabushiki Kaisha | Optical disk and method of manufacturing the same |
| WO2002101736A1 (en) * | 2001-06-07 | 2002-12-19 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium production method |
-
1989
- 1989-02-01 JP JP1024363A patent/JPH02203439A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293373A (en) * | 1990-08-29 | 1994-03-08 | Mitsubishi Denki Kabushiki Kaisha | Optical disk and method of manufacturing the same |
| JPH05274730A (en) * | 1992-03-30 | 1993-10-22 | Nec Corp | Veneer optical disk for magneto-optical recording and its recording and reproducing method |
| WO2002101736A1 (en) * | 2001-06-07 | 2002-12-19 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium production method |
| US7820234B2 (en) | 2001-06-07 | 2010-10-26 | Panasonic Corporation | Manufacturing method of optical information recording medium |
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