JPH0468692B2 - - Google Patents
Info
- Publication number
- JPH0468692B2 JPH0468692B2 JP58235756A JP23575683A JPH0468692B2 JP H0468692 B2 JPH0468692 B2 JP H0468692B2 JP 58235756 A JP58235756 A JP 58235756A JP 23575683 A JP23575683 A JP 23575683A JP H0468692 B2 JPH0468692 B2 JP H0468692B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- resin
- record carrier
- type record
- optical disk
- 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
- 229920005989 resin Polymers 0.000 claims description 51
- 239000011347 resin Substances 0.000 claims description 51
- 230000003287 optical effect Effects 0.000 claims description 32
- 239000010410 layer Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 16
- 239000010409 thin film Substances 0.000 claims description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 11
- 239000011342 resin composition Substances 0.000 claims description 8
- 229920002601 oligoester Polymers 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 5
- 229910052714 tellurium Inorganic materials 0.000 claims description 4
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229920005668 polycarbonate resin Polymers 0.000 claims description 2
- 239000004431 polycarbonate resin Substances 0.000 claims description 2
- 229920000193 polymethacrylate Polymers 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- -1 pentyl glycol Chemical compound 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent Substances 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
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
-
- 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
- G11B7/257—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 layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
-
- 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
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
-
- 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
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24318—Non-metallic elements
- G11B2007/2432—Oxygen
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、映像信号、音響信号などの信号を、
レーザー光により記録薄膜層に記録し、その記録
した信号を再びレーザー光により再生する時に用
いる記録再生用光デイスク型記録担体に関するも
のである。[Detailed Description of the Invention] Industrial Application Field The present invention provides a method for transmitting signals such as video signals and audio signals.
The present invention relates to an optical disc-type record carrier for recording and reproducing, which is used when recording on a recording thin film layer with a laser beam and reproducing the recorded signal with a laser beam.
従来例の構成とその問題点
近年、コンパクトデイスク、ビデオデイスクな
ど再生専用の光デイスクとともに、静止画フアイ
ル、文章フアイル用のユーザー書き込み可能な追
記型の光デイスクが普及してきた。再生専用の光
デイスクは基板上に信号凹凸（ピツト）として形
成してある。一方追記型の光デイスクでは記録前
に案内溝だけを形成しておき、記録時に案内溝に
沿つてレーザー光を照射し、その結果記録薄膜が
光学的な状態変化を生じ、それが信号となる。Conventional configurations and their problems In recent years, write-once type optical disks for still image files and text files that can be written by the user have become popular, as well as playback-only optical disks such as compact disks and video disks. A read-only optical disc is formed as signal pits on a substrate. On the other hand, in write-once optical discs, only a guide groove is formed before recording, and a laser beam is irradiated along the guide groove during recording, resulting in an optical state change in the recording thin film, which becomes a signal. .
前記案内溝の形成法には、スタンピング法、イ
ンジエクシヨン法の他の紫外線硬化型樹脂でもつ
て形成する方法がある。あらかじめ案内溝を設け
た原盤と基材との間に紫外線硬化型樹脂を注入し
紫外線を照射して、その紫外線硬化型樹脂の表面
に案内溝を形成する（以下レプリカ取りと記す）。
一般に紫外線硬化型樹脂は、短時間硬化で生産性
が向上する、無溶剤型のため無公害、省資源であ
る、常温近くで硬化し加熱を不適当とする素材に
適用できる、硬化に要するエネルギーが少なく運
転費が安いなどの利点を有している。さらに光デ
イスク用材料としては紫外線硬化型樹脂が液状で
あるため、過が可能でゴミ等の異物を含まない
樹脂を得ることができ、案内溝の隅々まで均一に
いきわたり案内溝を再現性よく写しとることがで
きる。また、樹脂内部の異方性が生じにくゝ光学
的、力学的歪みの発生も少ない。 Methods for forming the guide groove include a stamping method, an injection method, and a method of forming the guide groove using an ultraviolet curable resin. An ultraviolet curable resin is injected between the master and the base material, on which guide grooves have been previously provided, and ultraviolet rays are irradiated to form guide grooves on the surface of the ultraviolet curable resin (hereinafter referred to as replica removal).
In general, UV-curable resins improve productivity by curing in a short time, are solvent-free, so they are pollution-free and resource-saving; they cure near room temperature, and can be applied to materials for which heating is inappropriate; they require energy for curing. It has the advantage of low operating costs. Furthermore, since the ultraviolet curable resin is in liquid form as a material for optical disks, it is possible to obtain a resin that does not contain foreign matter such as dust, and can be applied evenly to every corner of the guide groove, allowing the guide groove to be formed with good reproducibility. You can take a photo. In addition, anisotropy inside the resin is less likely to occur, and optical and mechanical distortions are also less likely to occur.
しかしながら、レプリカ取りを行なう際、それ
を比較的高湿度下で行なうか、あるいはレプリカ
取りを繰り返しているうちに原盤に樹脂の部分的
付着が生じ、その付着が完成デイスクのドロツプ
アウト発生の大きな要因となつている。このため
レプリカ取りの際、それを繰り返しても原盤に樹
脂の部分的付着が発生しない紫外線硬化型樹脂を
用いた記録再生用光デイスク型記録担体が強く要
望されている。 However, when taking replicas, it must be done under relatively high humidity, or as replicas are taken repeatedly, resin may partially adhere to the master disc, and this adhesion is a major factor in the occurrence of dropouts on finished discs. It's summery. For this reason, there is a strong demand for an optical disc-type record carrier for recording and reproducing that uses an ultraviolet curing resin that does not cause partial adhesion of the resin to the master disc even when replicas are taken repeatedly.
また案内溝を形成している硬化樹脂が、熱によ
つてその案内溝の形状を変化させることのないよ
う、その硬化樹脂には熱変形の程度が極めて小さ
いことが要望されている。 Further, the cured resin forming the guide groove is required to have an extremely small degree of thermal deformation so that the shape of the guide groove does not change due to heat.
発明の目的
本発明の目的は、これらの要望を満足させた製
造上のトラブルのない、しかも品質の秀れた記録
再生用光デイスク型記録担体を提供することであ
る。OBJECTS OF THE INVENTION An object of the present invention is to provide an optical disk type record carrier for recording and reproducing that satisfies these demands, is free from manufacturing troubles, and has excellent quality.
発明の構成
本発明の記録再生用光デイスク型記録担体は、
光学的に透明で均質な樹脂基材の片面に、渦巻状
あるいは同心円状の案内溝を有する紫外線硬化型
樹脂層とレーザー光照射により光学的な状態の変
化する記録薄膜層と樹脂保護層とが順次積層され
ており、前記紫外線硬化型樹脂層が、多官能オリ
ゴエステルアクリレートおよび下記構造式で表わ
される下記の単官能アクリレートを含有する樹
脂組成物を硬化して得られたものである。Structure of the Invention The optical disk type record carrier for recording and reproduction of the present invention comprises:
An ultraviolet curable resin layer having spiral or concentric guide grooves, a recording thin film layer whose optical state changes when irradiated with laser light, and a resin protective layer are formed on one side of an optically transparent and homogeneous resin base material. The ultraviolet curable resin layer is obtained by curing a resin composition containing a polyfunctional oligoester acrylate and a monofunctional acrylate represented by the following structural formula.
多官能オリゴエステルアクリレートが、多価ア
ルコールと多価カルボン酸とアクリル酸の少なく
とも３種の化合物をエステル化することによつて
得られる反応生成物であり、上記多価アルコール
としては、ジエチレングリコール、ネオペンチル
グリコール、１，６−ヘキサンジオール、トリメ
チロールプロパンなどが挙げられる。また多価カ
ルボン酸としては、コハク酸、グルタル酸、アジ
ピン酸、フタル酸などの２価カルボン酸などが挙
げられる。 Polyfunctional oligoester acrylate is a reaction product obtained by esterifying at least three types of compounds: polyhydric alcohol, polycarboxylic acid, and acrylic acid. Examples include pentyl glycol, 1,6-hexanediol, and trimethylolpropane. Examples of polycarboxylic acids include dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, and phthalic acid.
レプリカ取りの際の部分的付着の原因は明らか
でないが、前記紫外線硬化型樹脂組成物を用いる
ことによつて、レプリカ取りを繰り返し行なつて
もスタンパーへの樹脂の部分的付着がなく、その
結果完成デイスクのドロツプアウトを大幅に減少
させることができることを見い出した。 The cause of partial adhesion during replica taking is not clear, but by using the ultraviolet curable resin composition, even if replica taking is repeated, there is no partial adhesion of the resin to the stamper. It has been found that dropout of the finished disk can be significantly reduced.
また多官能アクリレートと単官能アクリレート
を適当に組み合わせることによつて、100℃以下
で殆んど弾性率の変化のない硬化物が得られるこ
とを認めた。しかも、信号の記録、再生の際に用
いるレーザー光の経路には光学歪みが極めて少な
く、かつ硬化前に紫外線硬化型樹脂組成物を簡単
な清澄方法、たとえば加圧過することによつて
記録薄膜層近辺の異物を皆無にすることが可能
で、秀れた品質の記録再生用光デイスク型記録担
体となるものである。 It was also confirmed that by appropriately combining polyfunctional acrylate and monofunctional acrylate, a cured product with almost no change in elastic modulus at temperatures below 100°C can be obtained. Furthermore, optical distortion is extremely low in the path of the laser beam used for recording and reproducing signals, and the ultraviolet curable resin composition can be made into a recording thin film by a simple clarification method, such as applying pressure, before curing. It is possible to completely eliminate foreign matter near the layer, resulting in an optical disk type record carrier for recording and reproducing of excellent quality.
紫外線硬化型樹脂組成物には、その性質を変性
するために、スンタンパーからの剥離性を損なわ
ない範囲内で種々の添加剤を加えることができ
る。たとえば、液状樹脂の脱泡性、スタンバーと
の濡れをよくするための脱泡剤、湿潤剤などの界
面活性剤、硬化収縮を小さくするための非反応性
熱可塑性樹脂、あるいは紫外線照射の際にランプ
から発生する熱を有効に利用するための有機過酸
化物などの熱硬化触媒などがある。 Various additives can be added to the ultraviolet curable resin composition in order to modify its properties within a range that does not impair the releasability from the sun tamper. For example, defoaming properties of liquid resin, defoaming agents to improve wetting with the stambar, surfactants such as wetting agents, non-reactive thermoplastic resins to reduce curing shrinkage, or during ultraviolet irradiation. There are thermosetting catalysts such as organic peroxides that effectively utilize the heat generated from lamps.
実施例の説明
以下、本発明の実施例について、図面を参照し
て具体的に説明する。第１図は本発明の記録再生
用光デイスク型記録担体の構成を示した断面図で
ある。第１図において、１は光学的に透明で均質
な樹脂基材、２は樹脂保護層、３は渦巻状あるい
は同心円状の案内溝を有する紫外線硬化型樹脂層
および４はレーザー光照射により光学的な状態の
変化する記録薄膜層である。樹脂基材１としては
光学的に透明で均質な材質のもの、たとえばポリ
メタクリル酸エステル樹脂、ポリカーボネート樹
脂などの熱可塑性樹脂からなる円盤状の部材を用
いる。紫外線硬化型樹脂組成物としては、３価ア
ルコール、２価カルボン酸およびアクリル酸との
反応によつて得られる多官能オリゴエステルアク
リレート（東亜合成化学製、商品名アロニツクス
Ｍ−8060）80重量部、一般式（）で表される単
官能アクリレート（東亜合成化学製、商品名アロ
ニツクスＭ−101）20重量部およびベンジルジメ
チルケタール３重量部を含有しているものであ
る。記録薄膜層４としては光吸収性の低酸化物、
たとえばテルルの低酸化物TeOx（Ｏ＜ｘ＜２）
を主成分とするものを用いる。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a sectional view showing the structure of an optical disk type record carrier for recording and reproducing according to the present invention. In Fig. 1, 1 is an optically transparent and homogeneous resin base material, 2 is a resin protective layer, 3 is an ultraviolet curable resin layer having spiral or concentric guide grooves, and 4 is an optically transparent resin base material that is optically transparent by laser beam irradiation. It is a recording thin film layer whose state changes. As the resin base material 1, a disk-shaped member made of an optically transparent and homogeneous material, such as a thermoplastic resin such as polymethacrylate resin or polycarbonate resin, is used. The ultraviolet curable resin composition includes 80 parts by weight of polyfunctional oligoester acrylate (manufactured by Toagosei Kagaku, trade name: Aronix M-8060) obtained by reaction with trihydric alcohol, dihydric carboxylic acid, and acrylic acid; It contains 20 parts by weight of a monofunctional acrylate represented by the general formula () (manufactured by Toagosei Chemical Co., Ltd., trade name Aronix M-101) and 3 parts by weight of benzyl dimethyl ketal. As the recording thin film layer 4, a light-absorbing low oxide,
For example, low tellurium oxide TeOx (O<x<2)
The main component is used.
以上のように構成された本実施例の記録再生用
光デイスク型記録担体について以下にその製造法
を第２図にて説明する。 The manufacturing method of the optical disk type record carrier for recording and reproducing according to this embodiment constructed as described above will be explained below with reference to FIG. 2.
まず、渦巻状あるいは同心円状の案内溝の施さ
れたスタンパー５の表面の一部または全体に、紫
外線の照射によつて硬化可能な液状樹脂を被覆し
ついでその上より光学的に透明で均質な樹脂基材
１をスペーサー６を介して液状樹脂が均一な厚み
となるように圧着する。ついで基材１を通して紫
外線ランプ７より紫外線８を照射して液状樹脂を
硬化させ、そののち基材を、それに付着した硬化
樹脂３とともにスタンパーから剥離することによ
つてデイスクが得られる。デイスクが得られる。
得られたデイスク表面を、倍率10倍にて６カ所の
顕微鏡観察を行つた結果、樹脂付着による欠陥数
は平均0.1個であつた。一方前記紫外線硬化型樹
脂組成物のうち、一般式（）で表される単官能
アクリレートを除いた組成物から得られるデイス
クを用いて同様に行つた欠陥数は23個であつた。
得られた案内溝付きのデイスクを記録再生用光デ
イスク型記録担体とするには、案内溝を有する紫
外線硬化型樹脂層表面に記録薄膜層としてテルル
の低酸化物TeOx（Ｏ＜ｘ＜２）を真空蒸着によ
つて設ける。さらにその上に樹脂保護層として、
好ましくは樹脂基材と同一の材質からなるシート
を、紫外線硬化型樹脂でもつて記録薄膜層に貼り
合わせ、紫外線照射により硬化させて接着させる
か、あるいは溶剤に溶解させた樹脂溶液を記録薄
膜層表面に塗布し、乾燥させる。このようにして
片面使用の記録再生用光デイスク型記録担体が得
られる。テルルの低酸化物からなる記録薄膜層同
志を適当な接着剤で貼り合わせることによつて両
面使用の記録再生用光デイスク型記録担体が得ら
れることはいうまでもない。 First, a part or the entire surface of the stamper 5 provided with spiral or concentric guide grooves is coated with a liquid resin that can be cured by ultraviolet irradiation, and then an optically transparent and homogeneous resin is coated on the surface of the stamper 5. The resin base material 1 is compressed with a spacer 6 in between so that the liquid resin has a uniform thickness. Next, the liquid resin is cured by irradiating ultraviolet rays 8 from an ultraviolet lamp 7 through the substrate 1, and then the substrate is peeled off from the stamper together with the cured resin 3 attached thereto, thereby obtaining a disk. You will get a disk.
The surface of the obtained disk was observed under a microscope at 10x magnification, and as a result, the average number of defects due to resin adhesion was 0.1. On the other hand, a similar test using a disk obtained from the UV-curable resin composition excluding the monofunctional acrylate represented by the general formula () found 23 defects.
In order to use the obtained disk with guide grooves as an optical disk type record carrier for recording and reproduction, a low tellurium oxide TeOx (O<x<2) is applied as a recording thin film layer to the surface of the ultraviolet curable resin layer having guide grooves. is provided by vacuum evaporation. Furthermore, as a resin protective layer on top of that,
Preferably, a sheet made of the same material as the resin base material is laminated to the recording thin film layer using an ultraviolet curable resin, and the sheet is cured and bonded by ultraviolet irradiation, or a resin solution dissolved in a solvent is applied to the recording thin film layer surface. Apply and let dry. In this way, a single-sided recording/reproducing optical disk type record carrier is obtained. It goes without saying that a double-sided recording/reproducing optical disk type record carrier can be obtained by bonding recording thin film layers made of a low tellurium oxide with a suitable adhesive.
発明の効果
以上の説明から明らかなように、本発明の記録
再生用光デイスク型記録担体は、紫外線硬化型樹
脂でもつて案内溝を形成する製造工程において、
繰り返しその操作を行なつても、硬化樹脂がスタ
ンパーに付着することがないため製造上のトラブ
ルをなくし、さらに完成デイスクにおけるドロツ
プアウト発生を減少させることが可能である。ま
た、紫外線硬化型樹脂は100℃以下では殆んど弾
性率に変化のない硬化物を与えることが可能で、
案内溝を形成している硬化樹脂が熱によつてその
案内溝の形状を変化させるという問題を解消する
ことができる。また殆んど光学歪みを有しないた
とえばメタクリル樹脂のキヤスト板を基材とし、
液状の紫外線硬化型樹脂でもつて室温近辺で、大
きな圧力もかけずに案内溝を形成させているため
光学歪みが殆んどなく、しかも極めて微細な案内
溝を形成させることができる。しかも紫外線硬化
型樹脂組成物は硬化前は液状であるため、使用前
にたとえば加圧過で清澄可能で、このようにし
て得られた記録再生用光デイスク型記録担体は、
紫外線硬化型樹脂の特徴を充分にいかした高品質
のものである。Effects of the Invention As is clear from the above explanation, the optical disk type record carrier for recording and reproduction of the present invention has the following advantages:
Even if the operation is repeated, the cured resin does not adhere to the stamper, thereby eliminating manufacturing troubles and further reducing the occurrence of dropouts in the finished disk. In addition, UV-curable resins can provide cured products with almost no change in elastic modulus at temperatures below 100°C.
It is possible to solve the problem that the cured resin forming the guide groove changes the shape of the guide groove due to heat. In addition, the base material is a cast plate of methacrylic resin, which has almost no optical distortion,
Since guide grooves are formed using liquid ultraviolet curable resin at around room temperature without applying large pressure, there is almost no optical distortion, and extremely fine guide grooves can be formed. Moreover, since the ultraviolet curable resin composition is in a liquid state before curing, it can be clarified by applying pressure, for example, before use.
It is a high quality product that takes full advantage of the characteristics of ultraviolet curable resin.
第１図は本発明の記録再生用光デイスク型記録
担体の断面図、第２図は本発明の記録再生用光デ
イスク型記録担体の一製造法を示した図である。
１……樹脂基材、２……樹脂保護層、３……紫
外線硬化型樹脂層、４……記録薄膜層、５……ス
タンパー、６……スペーサー、７……水銀ラン
プ、８……紫外線。
FIG. 1 is a sectional view of an optical disk type record carrier for recording and reproducing according to the present invention, and FIG. 2 is a diagram showing one method of manufacturing the optical disk type record carrier for recording and reproducing according to the present invention. DESCRIPTION OF SYMBOLS 1... Resin base material, 2... Resin protective layer, 3... Ultraviolet curable resin layer, 4... Recording thin film layer, 5... Stamper, 6... Spacer, 7... Mercury lamp, 8... Ultraviolet rays .
Claims (1)
巻状あるいは同心円状の案内溝を有する紫外線硬
化型樹脂層とレーザー光照射により光学的な状態
の変化する記録薄膜層と樹脂保護層とが順次積層
されており、前記紫外線硬化型樹脂層が、多官能
オリゴエステルアクリレートおよび下記構造式で
表わされる下記の単官能アクリレートを含有す
る樹脂組成物を硬化して得られたものであること
を特徴とする記録再生用光デイスク型記録担体。 ２ 多官能オリゴエステルアクリレートが、多価
アルコールと多価カルボン酸とアクリル酸の少な
くとも３種の化合物をエステル化することによつ
て得られる反応生成物であることを特徴とする特
許請求の範囲第１項記載の記録再生用光デイスク
型記録担体。 ３ 光学的に透明で均質な樹脂基材としては、ポ
リメタクリル酸エステル樹脂を用いることを特徴
とする特許請求の範囲第１項記載の記録再生用光
デイスク型記録担体。 ４ 光学的に透明で均質な樹脂基材としては、ポ
リカーボネート樹脂を用いることを特徴とする特
許請求の範囲第１項記載の記録再生用光デイスク
型記録担体。 ５ レーザー光照射により光学的な状態の変化す
る記録薄膜はテルルの低酸化物TeOx（Ｏ＜ｘ＜
２）を主成分とする物質で形成されていることを
特徴とする特許請求の範囲第１項記載の記録再生
用光デイスク型記録担体。 ６ 透明プレート、紫外線硬化型樹脂層および記
録薄膜層よりなる積層体を２枚用意し、この２枚
の積層体の記録薄膜層同志を貼り合わせて構成さ
れていることを特徴とする特許請求の範囲第１
項、第２項、第３項、第４項もしくは第５項記載
の記録再生用光デイスク型記録担体。[Scope of Claims] 1. An ultraviolet curable resin layer having spiral or concentric guide grooves on one side of an optically transparent and homogeneous resin base material, and a recording thin film whose optical state changes when irradiated with laser light. layer and a resin protective layer are sequentially laminated, and the ultraviolet curable resin layer is obtained by curing a resin composition containing a polyfunctional oligoester acrylate and the following monofunctional acrylate represented by the following structural formula. 1. An optical disk type record carrier for recording and reproduction, characterized in that the carrier is 2. Claim No. 2, characterized in that the polyfunctional oligoester acrylate is a reaction product obtained by esterifying at least three types of compounds: a polyhydric alcohol, a polycarboxylic acid, and an acrylic acid. The optical disk type record carrier for recording and reproduction according to item 1. 3. The optical disk type record carrier for recording and reproduction according to claim 1, wherein a polymethacrylate resin is used as the optically transparent and homogeneous resin base material. 4. The optical disk type record carrier for recording and reproduction according to claim 1, wherein a polycarbonate resin is used as the optically transparent and homogeneous resin base material. 5 The recording thin film whose optical state changes when irradiated with laser light is made of low tellurium oxide TeOx (O<x<
2) The optical disc-type record carrier for recording and reproduction according to claim 1, characterized in that it is formed of a substance containing as a main component. 6. A patent claim characterized in that it is constructed by preparing two laminates consisting of a transparent plate, an ultraviolet curable resin layer, and a recording thin film layer, and bonding the recording thin film layers of these two laminates together. Range 1
5. An optical disk type record carrier for recording and reproduction according to item 1, 2, 3, 4 or 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58235756A JPS60127542A (en) | 1983-12-14 | 1983-12-14 | Recording and regenerating photodisc type record carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58235756A JPS60127542A (en) | 1983-12-14 | 1983-12-14 | Recording and regenerating photodisc type record carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60127542A JPS60127542A (en) | 1985-07-08 |
| JPH0468692B2 true JPH0468692B2 (en) | 1992-11-04 |
Family
ID=16990763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58235756A Granted JPS60127542A (en) | 1983-12-14 | 1983-12-14 | Recording and regenerating photodisc type record carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60127542A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6733950B2 (en) * | 2001-03-14 | 2004-05-11 | General Electric Company | Limited play data storage media and method for limiting access to data thereon |
| US7223520B2 (en) * | 2003-02-03 | 2007-05-29 | General Electric Company | Limited play optical media device with barrier layers |
| US7087282B2 (en) | 2003-07-15 | 2006-08-08 | General Electric Company | Limited play optical storage medium, method for making the same |
| US7202292B2 (en) | 2003-07-15 | 2007-04-10 | General Electric Company | Colored polymeric resin composition with 1,8-diaminoanthraquinone derivative, article made therefrom, and method for making the same |
-
1983
- 1983-12-14 JP JP58235756A patent/JPS60127542A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60127542A (en) | 1985-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62185264A (en) | Information recording medium | |
| JPH0468692B2 (en) | ||
| JPS62140257A (en) | Optical disk substrate | |
| JPH0750035A (en) | Optical disc manufacturing method and manufacturing apparatus thereof | |
| JPH09274736A (en) | Optical disc and method of manufacturing the same | |
| JP2002170284A (en) | Optical information carrier and method for producing the same | |
| JPS592245A (en) | Method for manufacturing optical recording disks | |
| JPH04344344A (en) | Tight sticking type optical information recording medium | |
| JPS6050732A (en) | Optical disk type record carrier for recording and reproduction | |
| JPS60237649A (en) | Optical disk type record carrier for recording and reproduction | |
| JP2816208B2 (en) | INFORMATION RECORDING MEDIUM, INFORMATION RECORDING MEDIUM STORAGE CASE, AND THEIR MANUFACTURING METHODS | |
| JPS58108042A (en) | Disc type recording carrier | |
| JP3223989B2 (en) | Manufacturing method of optical recording medium | |
| JPS6132238A (en) | Production of carrier for high-density information recording disk | |
| JP2973990B2 (en) | Manufacturing method of optical recording medium | |
| JPH0236996A (en) | Composition for optical recording materials | |
| JP3370564B2 (en) | optical disk | |
| JPS6394445A (en) | Optical information recording medium | |
| JPS60197957A (en) | Optical disk memory | |
| JP3344696B2 (en) | optical disk | |
| JPS61180946A (en) | Information recording disk | |
| JPS58153241A (en) | Optical disk | |
| JPH02183443A (en) | Optical recording medium | |
| JPS6352350A (en) | Magneto-optical disk memory medium | |
| JPS62169643A (en) | Optical information record medium |