JPH0249236B2 - - Google Patents
Info
- Publication number
- JPH0249236B2 JPH0249236B2 JP56195629A JP19562981A JPH0249236B2 JP H0249236 B2 JPH0249236 B2 JP H0249236B2 JP 56195629 A JP56195629 A JP 56195629A JP 19562981 A JP19562981 A JP 19562981A JP H0249236 B2 JPH0249236 B2 JP H0249236B2
- Authority
- JP
- Japan
- Prior art keywords
- recording material
- substrate
- optical recording
- moisture
- material layer
- 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
- 239000000463 material Substances 0.000 claims description 66
- 239000000758 substrate Substances 0.000 claims description 40
- 230000003287 optical effect Effects 0.000 claims description 28
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 45
- 125000006850 spacer group Chemical group 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- 239000000113 methacrylic resin Substances 0.000 description 3
- -1 Al Chemical class 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 125000005395 methacrylic acid group Chemical group 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
- G11B7/2542—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of organic resins
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】
本発明は透明な基板上に層設された記録物質層
に微細な凹凸又は穴を形成することによつて情報
を記録する光学的記録材料に関し、更に詳しくは
防湿膨張による基板の変形を防止した光学的記録
材料に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical recording material that records information by forming fine irregularities or holes in a recording material layer layered on a transparent substrate. This invention relates to an optical recording material that prevents deformation of a substrate due to
記録物質層に微細な変形を施したり、あるいは
穴をあけることにより、情報を記録するようにし
た光学的記録材料が注目されており、最近ではこ
れを利用したビデオデイスクが市場に提供される
ようになつている。この光学的記録材料には、製
造後に情報を光学的に記録するものと、製造時に
情報を記録しておくものとがある。 Optical recording materials that record information by minutely deforming or punching holes in the recording material layer have been attracting attention, and recently video discs using these materials have been available on the market. It's getting old. These optical recording materials include those in which information is optically recorded after manufacturing, and those in which information is recorded during manufacturing.
前者の光学的記録材料に情報を記録する場合に
は、記録すべき情報を電気的な時系列信号に変換
し、その信号に応じて強度が変調された高エネル
ギー密度のビーム例えばレーザビームで走査し、
透明な基板上に設けた記録物質層を局部的に加熱
して融解、蒸発あるいは凝集等の変化を生じさ
せ、非照射部分とは光学的濃度（反射濃度又は透
過濃度）の差を生じさせることによつて行なわれ
る。また、この光学的記録材料は、ユーザーが情
報を個別的に記録するために用いる他に、情報を
複製する場合にも用いられる。この情報を複製す
る場合には、例えば特開昭48−19303号公報、同
51−59626号公報に記載されているように、情報
が記録されたマスターをマスクとして用い、これ
をデイスク状の光学的記録材料の上に配置し、マ
スターマスクの上からフラツシユ照射すれば、マ
スターマスクのコピーを得ることができる。 When recording information on the former optical recording material, the information to be recorded is converted into an electrical time-series signal and scanned with a high energy density beam, such as a laser beam, whose intensity is modulated according to the signal. death,
Local heating of a recording material layer provided on a transparent substrate to cause changes such as melting, evaporation, or aggregation, resulting in a difference in optical density (reflection density or transmission density) from non-irradiated areas. It is carried out by. In addition to being used by users to individually record information, this optical recording material is also used to reproduce information. When copying this information, for example,
As described in Japanese Patent No. 51-59626, if a master on which information is recorded is used as a mask, placed on a disc-shaped optical recording material, and flash irradiated from above the master mask, the master You can get a copy of the mask.
後者の光学的記録材料は、再生専用のものであ
り、情報が記録された光学的記録材料を原盤と
し、この原盤からニツケルメツキなどの方法でス
タンパを作り、これを用いて基板表面に熱加工を
施して微細な凹部を形成し、その表面に蒸着など
によつて記録物質層を設けることにより、記録物
質層に微細な凸部を形成するものである。 The latter type of optical recording material is for reproduction only, and the optical recording material on which information is recorded is used as a master disc, and a stamper is made from this master disc using a method such as nickel-metsuki, and this is used to thermally process the substrate surface. This method forms fine convex portions in the recording material layer by applying a recording material layer to the surface thereof by vapor deposition or the like to form fine concave portions.
前述した光学的記録材料から情報を読み出す場
合には、記録物質層を変形もしくは破壊すること
がないように低エネルギー密度のレーザビームを
用い、このレーザビームで光学的記録材料を走査
する。記録物質層が平坦であると、レーザビーム
の反射方向が一定であるが、凹凸があると反射方
向が変化するから、レーザビームの反射方向に配
置した光検出器で記録物質層の凹凸の有無を知る
ことができ、この凹凸の有無から二値化した情報
を読み取ることができる。また、記録物質層に穴
を形成したものでは、レーザビームの反射状態を
検出する他に、光学的記録材料の裏面に光検出器
を配置して光学的記録材料の透過状態から穴の有
無を知ることができ、この穴の有無から二値化し
た情報を読み取ることができる。 When reading information from the optical recording material mentioned above, a laser beam of low energy density is used to scan the optical recording material with this laser beam so as not to deform or destroy the recording material layer. If the recording material layer is flat, the direction of reflection of the laser beam is constant, but if it is uneven, the direction of reflection changes, so a photodetector placed in the direction of reflection of the laser beam can detect the presence or absence of unevenness in the recording material layer. It is possible to know the presence or absence of this unevenness and read the binarized information. In addition, in the case of a recording material layer with holes formed, in addition to detecting the reflection state of the laser beam, a photodetector is placed on the back side of the optical recording material to detect the presence or absence of holes from the transmission state of the optical recording material. It is possible to read the binarized information from the presence or absence of this hole.
光学的記録材料の基本的構造は、透明な基板と
その片面に層設された記録物質層とからなるもの
であり、またこれを改良したものとしては特願昭
56−74819号公報に記載されているように、透明
な基板の上に保護層を介して記録物質層を層設
し、さらにその上に安定用被覆層を設けたもの、
特開昭52−156605号公報に記載されているよう
に、記録物質層にスペーサを介して保護層を設け
たもの、２組の光学的記録材料を用い、その記録
物質層が内側にくるように向い合せ、その間にス
ペーサを介して接合したもの等が提案されてい
る。 The basic structure of optical recording materials consists of a transparent substrate and a recording material layer layered on one side of the substrate.
As described in Publication No. 56-74819, a recording material layer is provided on a transparent substrate with a protective layer interposed therebetween, and a stabilizing coating layer is further provided thereon;
As described in Japanese Patent Application Laid-Open No. 52-156605, a protective layer is provided on the recording material layer via a spacer, and two sets of optical recording materials are used so that the recording material layer is on the inside. It has been proposed that the two electrodes face each other and are joined with a spacer between them.
基板としては、透明であること、複屈折性がな
いこと、微小欠陥がないこと、安価であること、
変形がしないこと等が要求され、一般的にはポリ
メチルメタアクリル樹脂が用いられている。記録
物質層としては、毒性が少ないこと、基板上への
膜の形成が容易なこと、融解又は蒸発に要するエ
ネルギーが小さいこと等が要求され、一般的には
Ge，Te，Bi，In等の金属が用いられる。なお再
生専用の複製盤には、反射率の高い金属、例えば
Al，Cr等が用いられる。 As a substrate, it must be transparent, have no birefringence, have no micro defects, and be inexpensive.
Polymethyl methacrylic resin is generally used because it is required not to be deformed. The recording material layer is required to have low toxicity, be easy to form a film on the substrate, and require little energy for melting or evaporation.
Metals such as Ge, Te, Bi, and In are used. Please note that playback-only reproduction discs may not be made of highly reflective metals, e.g.
Al, Cr, etc. are used.
一般的にポリメチルメタアクリル樹脂は、第１
図に示すように、防湿膨張が大きいため、これを
基板に用いた場合に空気中の水分が浸透して変形
するという欠点がある。例えば基板の片面に記録
物質層を蒸着した構造のものでは、蒸着面からは
吸湿されにくいが露出した片面からは水分が徐々
に浸透するため、経時的な反りが生じてしまい、
レーザビームの反射方向がずれたり、あるいは記
録物質層の凹凸又は穴の位置ずれが生じたりす
る。 Generally, polymethyl methacrylic resin is the first
As shown in the figure, since the moisture-proof expansion is large, there is a drawback that when this is used for a substrate, moisture in the air penetrates and deforms. For example, with a structure in which a recording material layer is deposited on one side of a substrate, moisture is not easily absorbed from the deposition surface, but moisture gradually penetrates from the exposed surface, causing warping over time.
The reflection direction of the laser beam may be shifted, or the unevenness or hole in the recording material layer may be misaligned.
本発明はこのような水分による基板の変形を防
止することを目的とするものであり、基板の表面
に防湿層を設けて、空気中の水分が基板内に浸透
しないようにしたことを特徴とするものである。 The present invention aims to prevent such deformation of the substrate due to moisture, and is characterized in that a moisture-proof layer is provided on the surface of the substrate to prevent moisture in the air from penetrating into the substrate. It is something to do.
以下、本発明について詳細に説明する。第２図
において、基板１は中心に孔２を有し、円盤状を
している。この基板１は透明なアクリル系樹脂を
主成分とするプラスチツク例えばポリメチルメタ
アクリル樹脂、アクリモノマーとアクリル化ウレ
タンオリゴマーの架橋物が用いられる。この基板
１の片面に記録物質層３が層設されており、この
記録物質層３に用いられる物質としては一般に、
Mg，Sc，Ｙ，Ti，Zr，Hf，Ｖ，Nb，Ta，Cr，
Mo，Ｗ，Mn，Re，Fe，Co，Ni，Ru，Rh，
Pd，Ir，Pt，Cu，Ag，Au，Zn，Cd，Al，Ga，
In，Si，Ge，Te，Pb，Po，Sn，As，Sb，Bi，
Seなどの金属が用いられ、、これらのうちで好ま
しいものはGe，Te，Bi，Inであり、特に再生専
用の複製盤にはAl，Cr等が用いられる。これら
の金属は１種あるいは２種以上、又は合金を蒸
着、スパツタリング、イオンプレーテイング、電
気メツキ、無電解メツキ等種々の方法によつて基
板１上に直接又は下塗層等を介して単層又は重層
として形成される。再生専用の複製盤の場合この
基板１の片面はスタンパで熱加工が施され、二値
化情報に応じた微細な凹部が形成されている。こ
の熱加工が施された片面に、記録物質層３が層設
されており、前記凹部内に記録物質層が入り込ん
で凸部４を形成する。 The present invention will be explained in detail below. In FIG. 2, a substrate 1 has a hole 2 in the center and has a disk shape. This substrate 1 is made of a plastic whose main component is a transparent acrylic resin, such as polymethyl methacrylic resin, or a crosslinked product of an acrylic monomer and an acrylated urethane oligomer. A recording material layer 3 is provided on one side of the substrate 1, and the materials used for this recording material layer 3 are generally as follows:
Mg, Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr,
Mo, W, Mn, Re, Fe, Co, Ni, Ru, Rh,
Pd, Ir, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga,
In, Si, Ge, Te, Pb, Po, Sn, As, Sb, Bi,
Metals such as Se are used, and among these, Ge, Te, Bi, and In are preferred, and Al, Cr, etc. are used especially for reproduction-only reproduction discs. One or more of these metals, or an alloy thereof, may be formed in a single layer on the substrate 1 directly or via an undercoat layer by various methods such as vapor deposition, sputtering, ion plating, electroplating, and electroless plating. Or formed as a multilayer. In the case of reproduction-only reproduction discs, one side of the substrate 1 is thermally processed with a stamper to form minute recesses corresponding to the binary information. A recording material layer 3 is provided on one side subjected to this thermal processing, and the recording material layer enters into the recessed portion to form a convex portion 4 .
前記基板１は、厚みが１mm〜２mm程度のポリメ
チルメタアクリル板が用いられるが、このポリメ
チルメタアクリル板は、吸湿膨張して変形する。
そこで本発明は記録物質層３が層設された面を除
いた基板１の表面に、防湿層５を設けている。こ
の防湿層５に用いられる物質としては、透湿率が
低いこと、光透過率が高いこと、薄膜加工が可能
なこと等が要求される。特に透湿率としてはでき
るだけ小さいことが必要であり、実用的には0.5
ｇ／m2・hr・mm以下であれば充分である。このよ
うな要求を満たす物質としてポリ塩化ビニリデン
がある。その膜厚は1μm〜5μmであればよい。こ
の物質は、ラテツクスにしての液体塗布あるい
は、有機溶剤に溶解して基板１の表面に層設され
る。なお、記録物質層３の表面にも防湿層を設け
てもよい。 As the substrate 1, a polymethyl methacrylic plate having a thickness of about 1 mm to 2 mm is used, and this polymethyl methacrylic plate deforms due to moisture absorption and expansion.
Therefore, in the present invention, a moisture-proof layer 5 is provided on the surface of the substrate 1 except for the surface on which the recording material layer 3 is provided. The material used for this moisture-proof layer 5 is required to have low moisture permeability, high light transmittance, and the ability to be processed into a thin film. In particular, the moisture permeability must be as low as possible, and practically 0.5
It is sufficient if it is less than g/m 2 ·hr·mm. Polyvinylidene chloride is a material that meets these requirements. The film thickness may be 1 μm to 5 μm. This substance is applied as a liquid in the form of latex or dissolved in an organic solvent to form a layer on the surface of the substrate 1. Note that a moisture-proof layer may also be provided on the surface of the recording material layer 3.
情報を読み取る場合には、エネルギー密度が小
さいレーザビーム６を用い、基板１を透過して記
録物質層３で反射したレーザビーム７を光検出器
８で測定する。記録物質層３に凸部４がある場合
には、レーザビームは点線に示すように進むか
ら、光検出器８で検出されない。したがつてこの
凸部４の有無から二値化した情報を読み取ること
ができる。 When reading information, a laser beam 6 with a low energy density is used, and the laser beam 7 transmitted through the substrate 1 and reflected by the recording material layer 3 is measured by a photodetector 8. If there is a convex portion 4 on the recording material layer 3, the laser beam will travel as shown by the dotted line and will not be detected by the photodetector 8. Therefore, the binarized information can be read from the presence or absence of the convex portion 4.
第３図はエアーサンドイツチタイプの光学的記
録材料を示すものである。透明な基板１０の片面
に記録物質層１１が層設されており、この記録物
質層１１に高エネルギー密度のレーザビーム等に
よつて作られた穴１２が設けられている。この微
細な穴１２によつて情報が担持される。記録物質
層１１の下に２個のリング状のスペーサ１３，１
４を介して設けられる保護層１５は、一般的には
基板１０と同じものが用いられる。この光学的記
録材料では、その外周全面に防湿層１６が層設さ
れる。 FIG. 3 shows an air sandwich type optical recording material. A recording material layer 11 is provided on one side of a transparent substrate 10, and holes 12 are provided in this recording material layer 11 by using a high energy density laser beam or the like. Information is carried by these minute holes 12. Two ring-shaped spacers 13, 1 are provided under the recording material layer 11.
The protective layer 15 provided through the substrate 4 is generally the same as the substrate 10. In this optical recording material, a moisture-proof layer 16 is provided over the entire outer periphery.
第４図に示す光学的記録材料は、基板１８と記
録物質層１９からなる第１の記録要素と、基板２
０と記録物質層２１からなる第２の記録要素とが
スペーサ２２，２３を介してサンドイツチにされ
ており、両面に情報を記録することができるよう
になつている。この光学的記録材料では、その全
面に防湿層２４が層設される。 The optical recording material shown in FIG. 4 includes a first recording element consisting of a substrate 18 and a recording material layer 19;
0 and a second recording element consisting of a recording material layer 21 are formed into a sandwich sandwich with spacers 22 and 23 interposed therebetween, so that information can be recorded on both sides. This optical recording material is provided with a moisture-proof layer 24 over its entire surface.
上記構成を有する本発明は基板に防湿層を設け
たから、吸湿膨張による基板の変形を防止するこ
とができる。したがつて、基板の変形による情報
の読取りミスが生じない。また、記録物質層のう
ち特に情報が記録される面が、基板から浸透した
水分によつて経時劣化するのを防止することがで
きる。 In the present invention having the above configuration, since the moisture-proof layer is provided on the substrate, deformation of the substrate due to moisture absorption and expansion can be prevented. Therefore, errors in reading information due to deformation of the substrate do not occur. Furthermore, it is possible to prevent the surface of the recording material layer, in particular on which information is recorded, from deteriorating over time due to moisture seeping in from the substrate.
第１図はポリメチルメタアクリル樹脂の吸湿特
性を示すグラフ、第２図ないし第４図は本発明の
光学的記録材料の実施例をそれぞれ示す断面図で
ある。
１……基板、３……記録物質層、４……凸部、
５……防湿層、６，７……レーザビーム、８……
光検出器、１０……基板、１１……記録物質層、
１３，１４……スペーサ、１５……保護層、１６
……防湿層、１８，２０……基板、１９，２１…
…記録物質層、２２，２３……スペーサ、２６…
…防湿層。
FIG. 1 is a graph showing the moisture absorption characteristics of polymethylmethacrylic resin, and FIGS. 2 to 4 are cross-sectional views showing examples of the optical recording material of the present invention. DESCRIPTION OF SYMBOLS 1... Substrate, 3... Recording material layer, 4... Convex part,
5... Moisture barrier layer, 6, 7... Laser beam, 8...
Photodetector, 10...substrate, 11...recording material layer,
13, 14... Spacer, 15... Protective layer, 16
...Moisture-proof layer, 18,20...Substrate, 19,21...
...recording material layer, 22, 23...spacer, 26...
...moisture barrier layer.
Claims (1)
な凹凸又は穴を形成することによつて情報を記録
する光学的記録材料において、ポリ塩化ビニリデ
ン防湿層を前記基板に層設したことを特徴とする
光学的記録材料。 ２ 前記基板はアクリル系を主成分とする樹脂か
らなることを特徴とする特許請求の範囲第１項記
載の光学的記録材料。 ３ 前記基板はポリメチルメタアクリル樹脂から
なることを特徴とする特許請求の範囲第２項記載
の光学的記録材料。 ４ 前記基板はアクリルモノマーとアクリル化ウ
レタンオリゴマーの架橋物からなることを特徴と
する特許請求の範囲第２項記載の光学的記録材
料。 ５ 前記塩化ビニリデンからなる防湿層は、乾燥
膜厚が約5μm以下であることを特徴とする特許請
求の範囲第１項記載の光学的記録材料。 ６ 前記防湿層は記録物質層が層設されていない
基板の片面及び端面に層設されていることを特徴
とする特許請求の範囲第１項記載の光学的記録材
料。[Scope of Claims] 1. An optical recording material that records information by forming fine irregularities or holes in a recording material layer provided on a transparent substrate, wherein a polyvinylidene chloride moisture-proof layer is applied to the substrate. An optical recording material characterized by being layered with. 2. The optical recording material according to claim 1, wherein the substrate is made of a resin whose main component is acrylic. 3. The optical recording material according to claim 2, wherein the substrate is made of polymethylmethacrylic resin. 4. The optical recording material according to claim 2, wherein the substrate is made of a crosslinked product of an acrylic monomer and an acrylated urethane oligomer. 5. The optical recording material according to claim 1, wherein the moisture-proof layer made of vinylidene chloride has a dry thickness of about 5 μm or less. 6. The optical recording material according to claim 1, wherein the moisture-proof layer is provided on one side and an end surface of the substrate on which the recording material layer is not provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56195629A JPS5898290A (en) | 1981-12-07 | 1981-12-07 | Optical recording meterial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56195629A JPS5898290A (en) | 1981-12-07 | 1981-12-07 | Optical recording meterial |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5898290A JPS5898290A (en) | 1983-06-11 |
| JPH0249236B2 true JPH0249236B2 (en) | 1990-10-29 |
Family
ID=16344339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56195629A Granted JPS5898290A (en) | 1981-12-07 | 1981-12-07 | Optical recording meterial |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5898290A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58158055A (en) * | 1982-03-12 | 1983-09-20 | Sony Corp | Optical disk |
| JPS61153129U (en) * | 1985-03-13 | 1986-09-22 |
-
1981
- 1981-12-07 JP JP56195629A patent/JPS5898290A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5898290A (en) | 1983-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4998239A (en) | Optical information recording medium containing a metal alloy as a reflective material | |
| US4647947A (en) | Optical protuberant bubble recording medium | |
| US5016240A (en) | Optical recording medium | |
| US4285056A (en) | Replicable optical recording medium | |
| JPH0132581B2 (en) | ||
| JPS62246784A (en) | Optical recording medium | |
| US4529991A (en) | Method for copying optical information | |
| JPH0535489B2 (en) | ||
| EP0345273B1 (en) | Optical recording medium | |
| JPH0249236B2 (en) | ||
| JPS62245545A (en) | Information recording medium | |
| JP2993973B2 (en) | Optical information recording medium | |
| JPH0411221Y2 (en) | ||
| JPH01286135A (en) | Optical disk | |
| JPS6310494B2 (en) | ||
| JPS6120237A (en) | Optical information recording medium | |
| JPS61273756A (en) | Optical disk | |
| JPS6255221B2 (en) | ||
| JP2506138B2 (en) | Optical memory device | |
| JPS62125552A (en) | Optical recording medium | |
| JPS6120059B2 (en) | ||
| JPH0646460B2 (en) | Light disk | |
| JPS58501886A (en) | Archival data recording system using low power radiation and associated media | |
| JPS59112451A (en) | Information recording and reproducing method | |
| JPS605437A (en) | Optical recording medium |