JPH0410244A - Optical recording medium, its production and recording/ reproducing device - Google Patents
Optical recording medium, its production and recording/ reproducing deviceInfo
- Publication number
- JPH0410244A JPH0410244A JP2110961A JP11096190A JPH0410244A JP H0410244 A JPH0410244 A JP H0410244A JP 2110961 A JP2110961 A JP 2110961A JP 11096190 A JP11096190 A JP 11096190A JP H0410244 A JPH0410244 A JP H0410244A
- Authority
- JP
- Japan
- Prior art keywords
- conductive film
- film
- recording medium
- optical recording
- transparent conductive
- 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 51
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 239000010419 fine particle Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 abstract description 8
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract description 4
- -1 InO2 Chemical compound 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract 2
- 238000000151 deposition Methods 0.000 abstract 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 abstract 2
- 238000004544 sputter deposition Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- 238000007737 ion beam deposition Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000007738 vacuum evaporation Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 229910006853 SnOz Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 150000003624 transition metals Chemical class 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、光磁気ディスクやコンパクトディスク、レー
ザディスクなどの光ディスクまたは光カード、光テープ
等の光記録媒体とその製造方法および光記録媒体用の記
録再生装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an optical recording medium such as an optical disk such as a magneto-optical disk, a compact disk, or a laser disk, an optical card, or an optical tape, a method for manufacturing the same, and an optical recording medium for use in the optical recording medium. The present invention relates to a recording/reproducing device.
光ディスク、光カードまたは光テープ等の光記録媒体は
、通常はレーザ光を用いて情報の再生や情報の書き換え
を行うようになっている。このため、光記録媒体は、一
般にレーザ光を透過させる基体、すなわちポリカーボネ
ートやポリメチルメタクリート、ポリオレフィン、エポ
キシ樹脂のような透明プラスチ、りまたはガラスに記録
膜を設けた構造をしている。例えば、磁気光学効果を利
用した光磁気ディスクは、第５図のようになっている。2. Description of the Related Art Optical recording media such as optical disks, optical cards, and optical tapes generally use laser light to reproduce and rewrite information. For this reason, optical recording media generally have a structure in which a recording film is provided on a substrate that transmits laser light, that is, transparent plastic such as polycarbonate, polymethyl methacryte, polyolefin, or epoxy resin, or glass. For example, a magneto-optical disk using the magneto-optic effect is shown in FIG.
第５図において、光磁気ディスク１０は、基体である基
板１２がポリカーボネートやポリメチルメタクリート等
の透明プラスチックからなっており、この基板１２の上
面に記録層１４が設けである。記録層１４は、記録膜で
あるＴｂＦｅＣｏ、（、ｄＦｅＣｏなとの希土類金属−
遷移金属合金膜を誘電体膜によってサンドンチ状に挾ん
だ構造をなし、スパッタリングや真空蒸着によって形成
される。そして、記録層１４の上には、紫外線硬化樹脂
などからなる保護膜１６を設け、記録層１４が疵つくの
を防止するとともに、大気中の水分による記録層１４の
腐食を防止している。In FIG. 5, a magneto-optical disk 10 has a base substrate 12 made of transparent plastic such as polycarbonate or polymethyl methacrylate, and a recording layer 14 is provided on the upper surface of this substrate 12. The recording layer 14 is a recording film made of rare earth metals such as TbFeCo, (, dFeCo).
It has a structure in which a transition metal alloy film is sandwiched between dielectric films in the shape of a sandwich, and is formed by sputtering or vacuum evaporation. A protective film 16 made of ultraviolet curing resin or the like is provided on the recording layer 14 to prevent the recording layer 14 from being scratched and to prevent corrosion of the recording layer 14 due to moisture in the atmosphere.
（発明が解決しようとする課題〕
ところが、上記したプラスチ・７りやガラスは、レーザ
ダイオードの発光波長に対する透明度が高いことや、複
屈折が少ないことなどの光学的特性に優れている反面、
誘電体であるため、帯電しやすい。このため、従来の光
記録媒体においては、帯電により空気中に浮遊している
塵埃等が付着しやすく、付着したゴミがノイズの発生原
因になるなどの問題がある。(Problems to be Solved by the Invention) However, while the above-mentioned plastic and glass have excellent optical properties such as high transparency to the emission wavelength of the laser diode and low birefringence,
Since it is a dielectric material, it is easily charged. Therefore, in conventional optical recording media, dust and the like floating in the air due to charging tend to adhere, and the adhered dust causes noise generation.
本発明は、前記従来技術の欠点を解消するためになされ
たもので、レーザ光の入射を妨げることなく帯電を防止
して塵埃等の付着を低減することができる光記録媒体お
よびその製造方法を提供することを目的としており、さ
らに光記録媒体の帯電を防止することができる記録再生
装置を提供することを目的としている。The present invention has been made in order to eliminate the drawbacks of the prior art, and provides an optical recording medium that can prevent charging and reduce the adhesion of dust without interfering with the incidence of laser light, and a method for manufacturing the same. Further, it is an object of the present invention to provide a recording and reproducing apparatus that can prevent charging of an optical recording medium.
〔課題を解決するための手段］
上記目的を達成するために、本発明に係る光記録媒体は
、基体面に形成した記録膜を覆っている保護膜を有する
光記録媒体において、少なくともいずれか一方の表面に
透明な導電膜を設けたことを特徴としている。[Means for Solving the Problems] In order to achieve the above object, an optical recording medium according to the present invention includes at least one of the protective films covering the recording film formed on the substrate surface. It is characterized by having a transparent conductive film on its surface.
また、上記光記録媒体を得るための本発明に係る光記録
媒体の製造方法は、基体面に記録膜と保護膜とを順次積
層したのち、少なくともいずれか一方の表面に、透明な
導電膜を成膜することを特徴としている。Further, the method for manufacturing an optical recording medium according to the present invention for obtaining the above-mentioned optical recording medium includes sequentially laminating a recording film and a protective film on a substrate surface, and then coating a transparent conductive film on at least one of the surfaces. It is characterized by forming a film.
透明な導電膜は、導電膜を形成するための材料物質を気
体状微粒子にし、前記表面に付着させることによって成
膜することができる。また、透明な導電膜は、導電膜を
形成するための材料物質を溶解した溶液を塗布したり、
導電膜を形成するための材料物質を溶解した溶液中に、
保護膜を設けた基体を浸漬することによつ２て成膜して
もよレヘ。A transparent conductive film can be formed by making a material for forming the conductive film into gaseous fine particles and attaching them to the surface. In addition, a transparent conductive film can be made by applying a solution containing dissolved materials to form the conductive film.
In a solution containing materials for forming a conductive film,
The film can also be formed in two steps by dipping the substrate provided with the protective film.
さらに、本発明の記録再生装置は、光記録媒体を挟持す
るクランプ機構を備えた光記録媒体の記録再生装置であ
って、前記クランプ機構の媒体挟持面に、接地回路と電
気的に接続した導電膜を設けたことを特徴としている。Furthermore, the recording and reproducing apparatus of the present invention is an optical recording medium recording and reproducing apparatus that includes a clamp mechanism that clamps an optical recording medium, and a conductive conductor that is electrically connected to a ground circuit on a medium clamping surface of the clamp mechanism. It is characterized by having a membrane.
上記の如（構成した本発明の光記録媒体は、表面に導電
膜が形成しであるため、この導電膜を記録再生装置の接
地回路に接続することにより、光記録媒体の帯電を防止
できる。従って、帯電に伴う空気中の塵埃等の付着を少
なくでき、ノイズの低減が図れて光記録媒体の信頼性を
向上することができる。しかも、導Ｔ１．Ｗｌは、透明
であるため、レーザ光の入射に影響を与えることがほと
んどない。Since the optical recording medium of the present invention constructed as described above has a conductive film formed on its surface, charging of the optical recording medium can be prevented by connecting this conductive film to the ground circuit of the recording/reproducing apparatus. Therefore, the adhesion of dust, etc. in the air due to charging can be reduced, noise can be reduced, and the reliability of the optical recording medium can be improved.Furthermore, since the conductor T1.Wl is transparent, the laser beam has almost no effect on the incidence of
なお、上記の透明な導電膜は、導電膜を形成するための
材料物質を気体状微粒子にし、前記表面に付着させるス
パッタリングや真空蒸着、イオンプレーティグ、イオン
ビームデポジションなどにより容易に成膜することがで
きる。また、透明な導電膜は、導電膜を形成するための
材料物質を溶解した溶液を塗布したり、導電膜を形成す
るための材料物質を溶解した溶液中に、保護膜を設けた
基体を浸漬することによっても、容易に成膜することが
できる。Note that the transparent conductive film described above can be easily formed by sputtering, vacuum evaporation, ion plating, ion beam deposition, etc., in which the material for forming the conductive film is turned into gaseous fine particles and attached to the surface. be able to. In addition, transparent conductive films can be produced by applying a solution containing dissolved materials for forming the conductive film, or by immersing the substrate with a protective film in a solution containing dissolved materials for forming the conductive film. The film can also be easily formed by doing the following.
さらに、本発明に係る記録再生装置は、光記録媒体を挟
持するクランプ機構の媒体挟持面に導電膜を設けるとと
もに、この導電膜を接地回路に電気的に接続しているた
め、表面に透明導電膜を有する光記録媒体を記録再生装
置に装填するだけで、光記録媒体に設けた透明導電膜を
接地することができ、光記録媒体の帯電を容易に防止す
ることができる。Further, in the recording/reproducing device according to the present invention, a conductive film is provided on the medium clamping surface of the clamp mechanism that clamps an optical recording medium, and this conductive film is electrically connected to a ground circuit, so that a transparent conductive film is formed on the surface. By simply loading an optical recording medium having a film into a recording/reproducing apparatus, the transparent conductive film provided on the optical recording medium can be grounded, and charging of the optical recording medium can be easily prevented.
本発明の光記録媒体および製造方法並びに記録再生装置
の好ましい実施例を、添付図面に従って詳説する。なお
、前記従来技術において説明した部分に対応する部分に
ついては、同一の符号を付し、その説明を省略する。Preferred embodiments of the optical recording medium, manufacturing method, and recording/reproducing apparatus of the present invention will be described in detail with reference to the accompanying drawings. Note that the same reference numerals are given to the parts corresponding to the parts explained in the prior art, and the explanation thereof will be omitted.
第１図は、本発明の実施例に係る光記録媒体である光磁
気ディスクの一部断面図である。FIG. 1 is a partial cross-sectional view of a magneto-optical disk which is an optical recording medium according to an embodiment of the present invention.
第１図において、光磁気ディスク１０は、基板１２の記
録層１４を設けた側と反対側に面、すなわちレーザ光が
入射する基板１２の下面に、透明導電膜２０が設けであ
る。透明導電膜２０は、Ｓｎ Ｏｚ、Ｉ ｎｏ２、Ｒｕ
ｂ、、ＶＯ２またはこれらの混合物もしくはポリアセチ
レン等からなっており、０．１〜ＩＯμｍの厚さを有し
ている。In FIG. 1, a magneto-optical disk 10 is provided with a transparent conductive film 20 on the opposite side of the substrate 12 to the side on which the recording layer 14 is provided, that is, on the lower surface of the substrate 12 onto which the laser beam is incident. The transparent conductive film 20 is made of SnOz, Ino2, Ru
b. It is made of VO2 or a mixture thereof, polyacetylene, etc., and has a thickness of 0.1 to IO μm.
このような光磁気ディスク１０は、次の如くして得るこ
とができる。Such a magneto-optical disk 10 can be obtained as follows.
まず、基板１２を洗浄、乾燥等の前処理をしたのち、基
板１２を図示しないスパッタリング装置内に配置し、ス
パッタリングによって、通常の光磁気ディスクの製造と
同様にして基板１２の上に誘電体膜、その上にＴｂＦｅ
Ｃｏ等の記録膜、記録膜の上に誘電体膜を順次積層して
記録層１４を形成する。記録層１４の形成が終了したな
らば、基板１２をスパッタリング装置から取り出し、記
録層１４の上に紫外線硬化樹脂をスピン塗布し、紫外線
を照射して保護膜１６を形成する。その後、透明導電膜
２０を基板１２の下面に設け、実施例の光磁気ディスク
１０を完成させる。First, after pre-processing the substrate 12 such as cleaning and drying, the substrate 12 is placed in a sputtering device (not shown), and a dielectric film is formed on the substrate 12 by sputtering in the same manner as in the manufacturing of a normal magneto-optical disk. , on which TbFe
A recording layer 14 is formed by sequentially laminating a recording film made of Co or the like and a dielectric film on the recording film. When the formation of the recording layer 14 is completed, the substrate 12 is taken out from the sputtering apparatus, an ultraviolet curing resin is spin-coated on the recording layer 14, and a protective film 16 is formed by irradiating ultraviolet rays. Thereafter, a transparent conductive film 20 is provided on the lower surface of the substrate 12 to complete the magneto-optical disk 10 of the example.
透明導電膜２０は、透明導電膜２０を形成させる材料物
質（ＳｎＯ２、ＶＯ□）等をターゲントや蒸発源とし、
スパッタリング法、真空蒸着法、イオンブレーティング
法、イオンビームデポジソヨン法等の材料を気体状の微
粒子にして基板１２に付着させたり、材料物質を溶媒に
溶かし、その溶液を基板１２に塗布し、乾燥させること
によって容易に形成することができる。The transparent conductive film 20 uses a material (SnO2, VO□), etc. that forms the transparent conductive film 20 as a target or an evaporation source,
A sputtering method, a vacuum evaporation method, an ion blating method, an ion beam deposition method, etc. can be used to make the material into gaseous fine particles and adhere it to the substrate 12, or to dissolve the material in a solvent and apply the solution to the substrate 12, It can be easily formed by drying.
上記の如くして得た光磁気ディスク１０の透明導電膜２
０を、記録再生装置に装着した際に、装置と共通のアー
スに接続した。この結果、光磁気ディスク１０への空気
中に浮遊している塵埃等の付着が少な（なった。このた
め、光磁気ディスク１０としての見掛は上の欠陥率が減
少し、誤動作が減少した。また、副次的効果として、透
明導電膜２０を無機物によって構成したとき、大気中の
水分の吸収拡散による基板１２の変形も防止することが
でき、光磁気ディスク１０の信顛性が向上した。Transparent conductive film 2 of magneto-optical disk 10 obtained as described above
0 was connected to the common ground with the device when it was installed in the recording/playback device. As a result, the adhesion of dust, etc. floating in the air to the magneto-optical disk 10 is reduced.As a result, the apparent defect rate of the magneto-optical disk 10 is reduced, and malfunctions are reduced. Furthermore, as a secondary effect, when the transparent conductive film 20 is made of an inorganic material, deformation of the substrate 12 due to absorption and diffusion of moisture in the atmosphere can be prevented, and the reliability of the magneto-optical disk 10 is improved. .
なお、前記実施例においては、光記録媒体として光磁気
ディスクＩＯについて説明したが、光記録媒体はコンパ
クトディスク等の光ディスクまたは光カード、光テープ
等であってもよい、また、前記実施例においては、記録
層１４の記録膜がＴｂＦｅＣｏなどの希土類金属−遷移
金属合金膜などの磁気光学効果を有するものについて説
明したが、Ａ２、Ｃｕなとの金属、フタロンアニン等の
有機色素、またはＴｅＧｅＡｓ等の相変化型光デイスク
用の記録膜であってもよい。さらに、保護膜１６は、ホ
２ソトメルト樹脂であってもよい。In the above embodiments, a magneto-optical disk IO was explained as an optical recording medium, but the optical recording medium may be an optical disk such as a compact disk, an optical card, an optical tape, etc. Although the recording film of the recording layer 14 has been described as having a magneto-optical effect such as a rare earth metal-transition metal alloy film such as TbFeCo, it may be made of a metal such as A2 or Cu, an organic dye such as phthalonanine, or a phase such as TeGeAs. It may also be a recording film for variable optical discs. Furthermore, the protective film 16 may be made of a hot melt resin.
第２図、第３図は、光記録媒体の他の実施例の一部断面
Ｍである。2 and 3 are partial cross sections M of other embodiments of the optical recording medium.
第２図に示した光磁気ディスク１０は、上面、すなわち
保護膜１６の上に透明導電膜２２が設けてあり、第３図
に示した光磁気ディスク１０は、両面に透明導電膜２０
．２２が形成しである。これらの実施例における基板１
２、記録層１４、保護膜１６および透明導電膜の組成、
形成方法は、前記した実施例と同様である。そして、こ
れらの実施例においても、前記実施例と同様の効果を得
ることができる。なお、第３図に示した両面に透明導電
膜を設けた実施例においては、透明導電膜２０．２２を
形成する材料を溶解した溶液中に、保護膜１６を設けた
基板１２を浸漬すると、両面の透明導電膜２０．２２を
一度に形成することができる。The magneto-optical disk 10 shown in FIG. 2 has a transparent conductive film 22 provided on the upper surface, that is, the protective film 16, and the magneto-optical disk 10 shown in FIG. 3 has a transparent conductive film 22 on both sides.
．． 22 is formed. Substrate 1 in these examples
2. Composition of recording layer 14, protective film 16 and transparent conductive film,
The forming method is the same as in the embodiment described above. Also in these embodiments, the same effects as in the above embodiments can be obtained. In the embodiment shown in FIG. 3 in which transparent conductive films are provided on both sides, when the substrate 12 provided with the protective film 16 is immersed in a solution in which the material forming the transparent conductive films 20 and 22 is dissolved, The transparent conductive films 20 and 22 on both sides can be formed at once.
第４図は、透明導電膜２０．２２を設けた光磁気ディス
クｌＯの記録再生装置の実施例の要部断面図である。FIG. 4 is a sectional view of a main part of an embodiment of a recording and reproducing apparatus for a magneto-optical disk 10 provided with transparent conductive films 20 and 22.
第４図において、スピンドルモータ３０の回転軸３２に
は、スピンドルハブ３４が肯定しである。In FIG. 4, a spindle hub 34 is attached to a rotating shaft 32 of a spindle motor 30. As shown in FIG.
スピンドルハブ３４は、上部がディスク受は部３６とな
っており、中央部に収納凹部３８が形成された略椀状を
なしている。そして、ディスク受は部３６の上面および
収納凹部３Ｂの内面には、メツキや謂着などにより形成
した金属等の導電性物質からなる導電膜４０が設けてあ
り、光磁気ディスク１０に形成した透明導電膜２０と回
転軸３２とを電気的に接続できるようにしである。The spindle hub 34 has a disk receiving portion 36 at the top and is approximately bowl-shaped with a storage recess 38 formed in the center. A conductive film 40 made of a conductive material such as metal formed by plating or gluing is provided on the upper surface of the disc holder part 36 and the inner surface of the storage recess 3B. This allows electrical connection between the conductive film 20 and the rotating shaft 32.
スピンドルハブ３４の収納凹部３８には、回転軸３２が
貫通している心出しリング４２が収納しである。この心
出しリング４２は、回転軸３２に沿って上下動自在とな
っており、収納凹部３８の底面との間に圧縮介在させた
ばね４４によって上方に付勢されている。そして、心出
しリング４２は、上端部の外周面にテーバ部４６が形成
され、テーバ部４６が光磁気ディスク１０の中心孔４８
の部分に当接して、スピンドルハブ３４の上に配置され
た光磁気ディスク１０の位置決めを行うことができるよ
うにしである。また、心出しリング４２には、スピンド
ルハブ３４に形成した切欠溝５０に挿入する係止凸部５
２が設けてあり、この係止凸部５２が切欠溝５０の上端
５４に係止されるようになっている。A centering ring 42 through which the rotating shaft 32 passes is housed in the housing recess 38 of the spindle hub 34 . The centering ring 42 is vertically movable along the rotating shaft 32 and is biased upward by a spring 44 compressed between the centering ring 42 and the bottom surface of the storage recess 38 . The centering ring 42 has a tapered portion 46 formed on the outer circumferential surface of the upper end thereof, and the tapered portion 46 is connected to the center hole 46 of the magneto-optical disk 10.
The magneto-optical disk 10 placed on the spindle hub 34 can be positioned by coming into contact with this portion. The centering ring 42 also has a locking convex portion 5 that is inserted into a notched groove 50 formed in the spindle hub 34.
2 is provided, and this locking convex portion 52 is locked to the upper end 54 of the notch groove 50.
一方、スピンドルハブ３４と協働して光磁気ディスク１
０を挟持するクランプ機構を構成しているクランプハブ
６０は、スピンドルハブ３４のディスク受は部３６に対
向した周縁部がディスク押さえ６２となっている。また
、クランプハブ６０の下部中心には、回転軸３２の上端
部と嵌合する嵌合孔６４が設けである。そして、ディス
ク押さえ６２の下面から嵌合孔６４の内部にわたって導
電膜６６が設けてあり、光磁気ディスク１０の上面に形
成した透明導電膜２２と回転軸３２とを電気的に接続す
るようになっている。On the other hand, in cooperation with the spindle hub 34, the magneto-optical disk 1
In the clamp hub 60 constituting the clamp mechanism for clamping the spindle hub 34, the peripheral edge portion facing the disk receiving portion 36 of the spindle hub 34 serves as a disk presser 62. Furthermore, a fitting hole 64 is provided at the center of the lower part of the clamp hub 60 to fit into the upper end portion of the rotating shaft 32 . A conductive film 66 is provided from the lower surface of the disk holder 62 to the inside of the fitting hole 64, and electrically connects the transparent conductive film 22 formed on the upper surface of the magneto-optical disk 10 and the rotating shaft 32. ing.
さらに、クランプハブ６０は、上部中心に軸受６８を介
してシャフト７０が取り付けてあり、ノヤフト７０に対
して回転自在となっているとともに、ソヤフト７０によ
って矢印７２のように上下動させられるようになってい
る。そして、シャフト７０の周囲には、図示しないケー
ス等の間に圧縮介在させたばね７４が配置してあり、ク
ランプハブ６０の下面を光磁気ディスク１０の上面に押
圧するようにしである。Further, the clamp hub 60 has a shaft 70 attached to the center of the upper part via a bearing 68, and is rotatable relative to the saw shaft 70, and can also be moved up and down as shown by an arrow 72 by the saw shaft 70. ing. A spring 74 is disposed around the shaft 70 and compressed between a case (not shown), etc., so as to press the lower surface of the clamp hub 60 against the upper surface of the magneto-optical disk 10.
上記の如く構成した光磁気ディスク１０の記録再生装置
においては、上下面に透明導電膜２０．２２を有する光
磁気ディスク１０を装填すると、光磁気ディスク１０が
クランプ機構であるスピンドルハブ３４のディスク受は
部３６とクランプハブ６０のディスク押さえ６２とに挟
持され、光磁気ディスク１０の上下面に形成した透明導
１ｔＭ！！！２０．２２が導電膜４０．６６を介してス
ピンドルモータ３０の回転軸３２に電気的に接続される
。In the recording and reproducing apparatus for the magneto-optical disk 10 configured as described above, when the magneto-optical disk 10 having the transparent conductive films 20 and 22 on the upper and lower surfaces is loaded, the magneto-optical disk 10 is mounted on the disk receiver of the spindle hub 34, which is a clamping mechanism. are held between the portion 36 and the disk holder 62 of the clamp hub 60, and are formed on the upper and lower surfaces of the magneto-optical disk 10. ! ! 20.22 is electrically connected to the rotating shaft 32 of the spindle motor 30 via a conductive film 40.66.
従って、回転軸３２をスピンドルモータ３０のケースな
どを介して、シャシなどの接地回路に接続することによ
り、光磁気ディスク１０は透明導電膜２０．２２が接地
され、帯電を防止される。Therefore, by connecting the rotating shaft 32 to a grounding circuit of a chassis or the like through the case of the spindle motor 30, the transparent conductive films 20, 22 of the magneto-optical disk 10 are grounded, and charging is prevented.
前記実施例においては、記録再生装置について説明した
が、記録専用の装置または再生専用の装置についても適
用できることは勿論である。In the embodiments described above, a recording/reproducing device has been described, but it goes without saying that the present invention can also be applied to a recording-only device or a reproducing-only device.
以上に説明したように、本発明の光記録媒体によれば、
表面に形成した導電膜をを記録再生装置の接地回路に接
続することにより、帯電を防止でき、帯電に伴う空気中
の塵埃等の付着が少なくなって、ノイズの低減が図れる
。しかも、導電膜は、透明であるため、レーザ光の入射
にほとんど影響を与えない。As explained above, according to the optical recording medium of the present invention,
By connecting the conductive film formed on the surface to the ground circuit of the recording/reproducing device, charging can be prevented, and the adhesion of dust and the like in the air due to charging is reduced, thereby reducing noise. Moreover, since the conductive film is transparent, it hardly affects the incidence of laser light.
そして、透明な導ＮＭは、導電膜を形成するための材料
物質を気体状微粒子にし、表面に付着させるスパッタリ
ングや真空蒸着、イオンブレーティグ、イオンビームデ
ポジションなどにより容易に成膜することができる。ま
た、透明な導電膜は、導電膜を形成するための材料物質
を溶解した溶液を塗布したり、導電膜を形成するための
材料物質を溶解した溶液中に、保護膜を設けた基体を浸
漬することによっても、容易に成膜することができる。Transparent conductive NM can be easily formed into a film by sputtering, vacuum evaporation, ion blasting, ion beam deposition, etc. in which the material for forming the conductive film is turned into gaseous fine particles and attached to the surface. . In addition, transparent conductive films can be produced by applying a solution containing dissolved materials for forming the conductive film, or by immersing the substrate with a protective film in a solution containing dissolved materials for forming the conductive film. The film can also be easily formed by doing the following.
また、本発明に係る記録再生装置は、光記録媒体を挟持
するクランプ機構の媒体挟持面に、接地回路と電気的に
接続した導電膜を設けたことにより、表面に導電膜を有
する光記録媒体を記録再生装置に装填するだけで、光記
録媒体に設けた導電膜を接地することができ、光記録媒
体の帯電を容易に防止することができる。Further, the recording/reproducing device according to the present invention is provided with a conductive film electrically connected to a ground circuit on the medium clamping surface of the clamp mechanism that clamps the optical recording medium. By simply loading the optical recording medium into a recording/reproducing apparatus, the conductive film provided on the optical recording medium can be grounded, and charging of the optical recording medium can be easily prevented.
第１図は本発明の実施例に係る光磁気ディスクの一部断
面図、第２図は保護膜の上に透明導電膜を設けた光磁気
ディスクの実施例の一部断面図、第３図は両面に透明導
電膜を設けた光磁気ディスクの一部断面図、第４図は実
施例に係る記録再生装置の要部断面図、第５図は従来の
光磁気ディスクの一部断面図である。
１０−一−−−−光記録媒体（光磁気ディスク）、１２
・−−−−−基体（基板） 、１４−−−−−一記録層
、１６−−−−一保護膜、
２０．２２ −−−−透明誘電膜、
３４、６０
クランプ機構
（スピンドルハブ、
クランプハ
ブ）、
４０．６０〜−−−−−導電膜。FIG. 1 is a partial cross-sectional view of a magneto-optical disk according to an embodiment of the present invention, FIG. 2 is a partial cross-sectional view of an example of a magneto-optical disk in which a transparent conductive film is provided on a protective film, and FIG. 4 is a partial cross-sectional view of a magneto-optical disk with transparent conductive films on both sides, FIG. 4 is a cross-sectional view of a main part of a recording/reproducing device according to an embodiment, and FIG. 5 is a partial cross-sectional view of a conventional magneto-optical disk. be. 10-1---Optical recording medium (magneto-optical disk), 12
----Base (substrate), 14-----One recording layer, 16-----One protective film, 20.22----Transparent dielectric film, 34, 60 Clamp mechanism (spindle hub, Clamp hub), 40.60~----conductive film.
Claims (6)
記録媒体において、少なくともいずれか一方の表面に透
明な導電膜を設けたことを特徴とする光記録媒体。(1) An optical recording medium having a protective film covering a recording film formed on a substrate surface, characterized in that a transparent conductive film is provided on at least one surface.
少なくともいずれか一方の表面に、透明な導電膜を成膜
することを特徴とする光記録媒体の製造方法。(2) After sequentially forming a recording film and a protective film on the substrate surface,
A method for manufacturing an optical recording medium, comprising forming a transparent conductive film on at least one surface.
めの材料物質を気体状微粒子にし、前記表面に付着させ
ることを特徴とする請求項２に記載の光記録媒体の製造
方法。(3) The method for manufacturing an optical recording medium according to claim 2, characterized in that in forming the transparent conductive film, a material for forming the conductive film is made into gaseous fine particles and adhered to the surface. .
めの材料物質を溶解した溶液を塗布することを特徴とす
る請求項２に記載の光記録媒体の製造方法。(4) The method for manufacturing an optical recording medium according to claim 2, wherein the transparent conductive film is formed by applying a solution in which a material for forming the conductive film is dissolved.
めの材料物質を溶解した溶液中に、前記保護膜を設けた
基体を浸漬することを特徴とする請求項２に記載の光記
録媒体の製造方法。(5) The transparent conductive film is formed by immersing the substrate provided with the protective film in a solution in which a material for forming the conductive film is dissolved. A method for manufacturing an optical recording medium.
録媒体の記録再生装置において、前記クランプ機構の媒
体挟持面に、接地回路と電気的に接続した導電膜を設け
たことを特徴とする光記録媒体の記録再生装置。(6) A recording/reproducing apparatus for an optical recording medium including a clamp mechanism for clamping an optical recording medium, characterized in that a conductive film electrically connected to a ground circuit is provided on the medium clamping surface of the clamp mechanism. Recording and reproducing device for optical recording media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2110961A JPH0410244A (en) | 1990-04-26 | 1990-04-26 | Optical recording medium, its production and recording/ reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2110961A JPH0410244A (en) | 1990-04-26 | 1990-04-26 | Optical recording medium, its production and recording/ reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0410244A true JPH0410244A (en) | 1992-01-14 |
Family
ID=14548906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2110961A Pending JPH0410244A (en) | 1990-04-26 | 1990-04-26 | Optical recording medium, its production and recording/ reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0410244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0892399A3 (en) * | 1997-07-17 | 1999-10-13 | Canon Kabushiki Kaisha | Information recording medium and information recording/reproducing apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60182502A (en) * | 1984-02-29 | 1985-09-18 | Anelva Corp | Vertical magnetic recording and reproducing device |
| JPH01158643A (en) * | 1987-12-14 | 1989-06-21 | Matsushita Electric Ind Co Ltd | optical disk |
-
1990
- 1990-04-26 JP JP2110961A patent/JPH0410244A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60182502A (en) * | 1984-02-29 | 1985-09-18 | Anelva Corp | Vertical magnetic recording and reproducing device |
| JPH01158643A (en) * | 1987-12-14 | 1989-06-21 | Matsushita Electric Ind Co Ltd | optical disk |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0892399A3 (en) * | 1997-07-17 | 1999-10-13 | Canon Kabushiki Kaisha | Information recording medium and information recording/reproducing apparatus |
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