JP2530696B2 - Optical recording medium duplication method - Google Patents
Optical recording medium duplication methodInfo
- Publication number
- JP2530696B2 JP2530696B2 JP63271543A JP27154388A JP2530696B2 JP 2530696 B2 JP2530696 B2 JP 2530696B2 JP 63271543 A JP63271543 A JP 63271543A JP 27154388 A JP27154388 A JP 27154388A JP 2530696 B2 JP2530696 B2 JP 2530696B2
- Authority
- JP
- Japan
- Prior art keywords
- base material
- curable resin
- resin
- mold
- optical recording
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、光学的に情報の再生が可能な光記録体に関
し、さらに詳しくは2P（photo polymerization）法と呼
ばれる方法により製造される光記録体に関する。TECHNICAL FIELD The present invention relates to an optical recording medium capable of optically reproducing information, and more specifically, an optical recording produced by a method called 2P (photo polymerization) method. Regarding the body
第２図および第３図は光記録体の複製方法の従来例を
説明するための図である。2 and 3 are diagrams for explaining a conventional example of a method of copying an optical recording medium.
光記録体は、高密度記録を達成する為に、光記録体用
基材上に凹凸状光学的情報記録パターンを形成する必要
がある。このため、従来から、幾つかの成形法が提案さ
れているが、微細な情報記録パターンの転写精度の極め
て高い2P（photo polymerization）法と呼ばれる方法が
盛んに検討されている。In order to achieve high density recording, it is necessary for the optical recording material to form an uneven optical information recording pattern on the optical recording material base material. Therefore, some molding methods have been proposed, but a method called 2P (photo polymerization) method, which has extremely high transfer accuracy of a fine information recording pattern, has been actively studied.
第２図は2P法による代表的な光記録体の複製の工程を
示す図である。以下この第２図により2P法の概要を説明
する。FIG. 2 is a diagram showing a process of copying a typical optical recording medium by the 2P method. The outline of the 2P method will be described below with reference to FIG.
第２図（ａ）に示す型１は、情報記録パターンに対応
した凹凸を表面に有するものである。2P法では、まず、
この型１の上に同図（ｂ）に示すように紫外線硬化型樹
脂２を塗布し、更に、その上に同図（ｃ）、（ｄ）に示
すように基材３を重ね合わせて積置する。しかる後、紫
外線を照射し、同図（ｅ）に示すように樹脂２を硬化さ
せ、その後同図（ｆ）に示すように型１を剥離すること
により、基材３上に硬化型樹脂２による情報記録パター
ンを転写、成形している。The mold 1 shown in FIG. 2 (a) has unevenness on the surface corresponding to the information recording pattern. In the 2P method, first,
An ultraviolet-curable resin 2 is applied on the mold 1 as shown in FIG. 2B, and a base material 3 is superposed on the mold 1 as shown in FIGS. Place. Then, the resin 2 is irradiated with ultraviolet rays to cure the resin 2 as shown in FIG. 6E, and then the mold 1 is peeled off as shown in FIG. The information recording pattern is transferred and molded.
また、紫外線硬化型樹脂の塗布方法として第３図
（ａ）に示すように基材３を硬化型樹脂２上に積置する
際、基材３上にも硬化型樹脂２を塗布しておき、同図
（ｂ）に示すように硬化型樹脂２同士を接触させ重ね合
わせて積置し、同図（ｃ）、（ｄ）に示すように樹脂２
を硬化させて型１を剥離することにより、気泡の混入を
防ぐ方法もある（特開昭63-81639号公報）。As a method of applying the ultraviolet curable resin, when the base material 3 is stacked on the curable resin 2 as shown in FIG. 3A, the curable resin 2 is also applied on the base material 3 beforehand. , The curable resins 2 are brought into contact with each other as shown in FIG.
There is also a method of preventing the inclusion of air bubbles by curing the resin and peeling off the mold 1 (Japanese Patent Laid-Open No. 63-81639).
しかしながら、上記前者のような従来の2P法による成
形方法では、例えばスタンパー等の型上に塗布された樹
脂が時間と共に拡がり、樹脂に基材を積置する際に、接
触面積が大きくなる。そのため、両者の接触する面の間
に気泡が巻き込まれ易くなり、樹脂層中に気泡が混入す
ることにより、成形歩留まりの低下、エラーレートの増
加等の問題が生じていた。However, in the conventional 2P molding method such as the former method, the resin applied to the mold such as the stamper spreads over time, and the contact area increases when the base material is stacked on the resin. Therefore, air bubbles tend to be caught between the surfaces contacting each other, and the air bubbles are mixed in the resin layer, which causes problems such as a decrease in molding yield and an increase in error rate.
また、特開昭63-81639号公報に示されているように基
材上にも樹脂を塗布し、その自重により樹脂の拡がりを
防ぐ上記後者の方法は、その塗布方法自体に難点があ
る。さらには基材３上にも樹脂２を塗布するため工程数
が増加する等の問題があり好ましくない。Further, as described in Japanese Patent Laid-Open No. 63-81639, the latter method in which a resin is applied onto a substrate and the resin is prevented from spreading due to its own weight has a drawback in its application method itself. Furthermore, since the resin 2 is applied on the base material 3, there is a problem that the number of steps is increased, which is not preferable.
本発明は、上記課題を解決するものであって、その目
的は、基材を、100乃至5000cpsの粘度を有する硬化型樹
脂に最初に接触させる際に、基材の滑らかな凸状湾曲面
の凸部を、滑らかな凸状湾曲面を有する硬化型樹脂の凸
部に点接触、又は、線接触させ、次いで積置の過程中に
気泡が混入しないように点状、又は、線状の接触状態か
ら基材の接触面積を徐々に拡げるようにすることで樹脂
中への気泡の混入を防ぎ、そして、エラーレートが低く
かつ歩留りの高い光記録体の複製方法を提供することに
ある。The present invention is to solve the above problems, and an object thereof is to provide a smooth convex curved surface of a base material when the base material is first contacted with a curable resin having a viscosity of 100 to 5000 cps. Point contact or line contact with the convex part of the curable resin that has a smooth convex curved surface, and then the point or line contact so that air bubbles do not mix during the stacking process. It is an object of the present invention to provide a method of duplicating an optical recording medium which has a low error rate and a high yield by preventing bubbles from being mixed into the resin by gradually expanding the contact area of the substrate from the state.
そのために本発明は、2P法による光記録体の複製にお
いて、基材を、100乃至5000cpsの粘度を有する硬化型樹
脂に最初に接触させる際に、滑らかな凸状湾曲面を有す
る基材の凸部を、型上に塗布された滑らかな凸状湾曲面
を有する硬化型樹脂の凸部に点接触、又は、線接触さ
せ、次いで積置の過程中に気泡の混入が生じないように
基材を、その接触状態から硬化型樹脂に対して接触する
面積を徐々に拡げるように積置することを特徴とするも
のである。Therefore, the present invention, in the duplication of the optical recording medium by the 2P method, when the substrate is first contacted with a curable resin having a viscosity of 100 to 5000 cps, the convex of the substrate having a smooth convex curved surface. Part is point-contacted or line-contacted with the convex part of the curable resin having a smooth convex curved surface applied on the mold, and then the base material so that air bubbles are not mixed in during the stacking process. Are stacked so that the area of contact with the curable resin gradually expands from the contact state.
本発明の光記録体の複製方法では、基材と、100乃至5
000cpsの範囲の粘度を有する硬化型樹脂との最初の接触
の際に、基材の滑らかな凸状湾曲面の凸部を滑らかな凸
状湾曲面を有する硬化型樹脂の凸部に点接触、又は、線
接触させ、次いで基材を、この状態から徐々に接触面積
を拡げられて樹脂上に積置することにより、樹脂中に気
泡が混入するのを防止することができる。In the method of copying an optical recording medium of the present invention, a substrate and 100 to 5
At the first contact with a curable resin having a viscosity in the range of 000 cps, the convex portion of the smooth convex curved surface of the substrate is point-contacted with the convex portion of the curable resin having a smooth convex curved surface, Alternatively, it is possible to prevent air bubbles from being mixed into the resin by making a line contact and then stacking the base material on the resin such that the contact area is gradually expanded from this state.
以下、図面を参照しつつ実施例を説明する。 Hereinafter, embodiments will be described with reference to the drawings.
第１図は本発明に係る光記録体の複製方法の１実施例
を説明するための図である。FIG. 1 is a diagram for explaining one embodiment of a method of copying an optical recording medium according to the present invention.
本発明の複製方法は、第１図（ａ）に示すように、ま
ず、情報記録パターンを表面に有する、例えばスタンパ
ー等の型１上に滑らかな凸状湾曲面を有するように硬化
型樹脂２を塗布する。次に同図（ｂ）に示すように滑ら
かな凸状湾曲面を形成するように湾曲させた基材３を樹
脂２に接触させた後、同図（ｃ）に示すように接触面積
を広げてゆく。つまり、基材３の滑らかな凸状湾曲面の
凸部と、樹脂２の滑らかな凸状湾曲面の凸部とが接触す
るため基材３と樹脂２の最初の接触が点または線になっ
た状態から、わずかずつ接触面積が拡げられてゆく。In the replication method of the present invention, as shown in FIG. 1A, first, a curable resin 2 having an information recording pattern on its surface, for example, a mold 1 such as a stamper having a smooth convex curved surface. Apply. Next, after the base material 3 curved so as to form a smooth convex curved surface as shown in FIG. 3B is brought into contact with the resin 2, the contact area is expanded as shown in FIG. Go on. That is, since the convex portion of the smooth convex curved surface of the base material 3 and the convex portion of the smooth convex curved surface of the resin 2 come into contact with each other, the initial contact between the base material 3 and the resin 2 becomes a point or a line. The contact area gradually expands from the open state.
このようにすると、基材３と樹脂２が点又は線接触す
るため、一度に大面積が接触する従来法とは異なり気泡
が混入するのを防ぐことができる。すなわち、従来法は
基材３と樹脂２が最初から面接触となり一度に大面積が
接触するため気泡が混入しやすいが、本発明の方法によ
れば、このような面接触ではないため、一度に大面積が
接触しない。しかも、点又は線接触から徐々に接触面積
が大きくなるようにするので、気泡が混入するのを防ぐ
ことができる。また、第３図に示す従来例（特開昭63-8
1639号公報）のように基材３上に樹脂２を塗布するよう
な工程もないので、処理工程も簡素化でき処理が容易に
なる。したがって、上記操作により樹脂２に気泡が混入
するのを防ぎつつ、型１上に基材３を積置することがで
きる。このようにして積置した基材３側から紫外線を照
射して同図（ｄ）、（ｅ）に示すように樹脂２を硬化一
体化させて型１を剥離することにより、気泡のない状態
で型１上の情報記録パターンを基材３上に転写成形する
ことができる。In this way, since the base material 3 and the resin 2 are in point or line contact with each other, it is possible to prevent bubbles from being mixed in unlike the conventional method in which a large area is contacted at once. That is, in the conventional method, since the base material 3 and the resin 2 are in surface contact from the beginning and a large area is in contact at a time, bubbles are likely to be mixed, but according to the method of the present invention, such surface contact does not occur, Does not come into contact with a large area. Moreover, since the contact area is gradually increased from the point or line contact, it is possible to prevent bubbles from entering. In addition, a conventional example shown in FIG.
Since there is no step of applying the resin 2 on the base material 3 as in Japanese Patent No. 1639), the processing steps can be simplified and the processing becomes easy. Therefore, the base material 3 can be stacked on the mold 1 while preventing bubbles from being mixed in the resin 2 by the above operation. A state without air bubbles is obtained by irradiating ultraviolet rays from the side of the base material 3 stacked in this way to cure and integrate the resin 2 and peel off the mold 1 as shown in FIGS. Thus, the information recording pattern on the mold 1 can be transferred and molded onto the base material 3.
ここで基材３の湾曲は、基材が破壊しない範囲ででき
るだけ接触面積が小さくなるような程度が良い。Here, the curvature of the base material 3 is preferably such that the contact area is as small as possible within the range where the base material is not destroyed.
本発明に用いる基材としては、フレキシビリティのあ
る材料である必要があり、ポリメチルメタクリレート
（PMMA）、ポリカーボネート（PC）、ポリエステル、エ
ポキシ、ポリオレフィン、ポリスチレンなどのプラスチ
ック樹脂が望ましい。The substrate used in the present invention needs to be a flexible material, and plastic resins such as polymethylmethacrylate (PMMA), polycarbonate (PC), polyester, epoxy, polyolefin and polystyrene are desirable.
また、本発明に用いる樹脂としては、一般的な紫外線
硬化型樹脂、電子線硬化型樹脂が掲げられるが、型上に
樹脂を塗布した後、時間的に拡がりの度合が小さいよう
な粘度（例えば粘土範囲100〜5000cps）を有する樹脂組
成が望ましい。Further, as the resin used in the present invention, a general ultraviolet curable resin and an electron beam curable resin are listed, but after the resin is applied on the mold, a viscosity such that the degree of spread is small with time (for example, A resin composition having a clay range of 100-5000 cps) is desirable.
本発明を次のようにして実施した。 The present invention was carried out as follows.
まず、表面にピッチ１μｍ、段差800Åの凹凸状光学
的情報記録パターンの形成されたスタンパー（20cm）１
上の中央に紫外線硬化型の樹脂（商品名;SS-120、会社
名；スリーボンド）２をディスペンサーにより0.5cm3滴
下した。そして15cm、厚さ0.4mmのポリカーボネート樹
脂基材をＲ＝25cmに曲げ、下に凸になるようにして樹脂
２上に積置した。その際、基材３の中心が樹脂２の中心
と接触するように置いた。その後徐々に接触面を拡げ、
完全に基材３をスタンパー１上に積置した。さらに基材
３側から紫外線を照射して樹脂２を硬化させ、硬化一体
化した樹脂２層と基材３をスタンパー１から剥離して光
記録体の複製を行った。First, a stamper (20 cm) 1 having a concave and convex optical information recording pattern with a pitch of 1 μm and a step of 800 Å on the surface 1
0.5 cm 3 of an ultraviolet curable resin (trade name: SS-120, company name: ThreeBond) 2 was dropped in the upper center by a dispenser. Then, a polycarbonate resin base material having a thickness of 15 cm and a thickness of 0.4 mm was bent to R = 25 cm, and was placed on the resin 2 so as to be convex downward. At that time, it was placed so that the center of the base material 3 was in contact with the center of the resin 2. Then gradually expand the contact surface,
The base material 3 was completely stacked on the stamper 1. Further, ultraviolet rays were irradiated from the side of the substrate 3 to cure the resin 2, and the cured and integrated resin 2 layer and the substrate 3 were separated from the stamper 1 to duplicate the optical recording body.
上記のようにして実施した複製品について顕微鏡検査
を行ったところ、気泡が全く観察されず良好な光記録体
が得られた。Microscopic inspection of the duplicated product carried out as described above showed that no bubbles were observed and a good optical recording medium was obtained.
以上述べたように、本発明に係わる光記録体の複製方
法によれば、基材と、100乃至5000cpsの粘度を有する硬
化型樹脂との最初の接触の際に、基材の滑らかな凸状湾
曲面の凸部を硬化型樹脂の滑らかな凸状湾曲面の凸部に
点接触、又は、線接触させて気泡の混入を阻止し、次い
で、この接触状態から、気泡が混入しないように基材を
接触面積を徐々に拡げてゆくように積置し、樹脂中に気
泡の混入のない光記録体を複製し得る。その結果、エラ
ーレートの低い光記録体の複製が工程数の増加なく可能
となり、しかも、複製歩留りが向上し、生産コストの低
減を図ることができる。As described above, according to the method for reproducing an optical recording medium of the present invention, when the base material and the curable resin having a viscosity of 100 to 5000 cps are first contacted with each other, the smooth convex shape of the base material is obtained. The convex portion of the curved surface is point-contacted or line-contacted with the convex portion of the smooth convex curved surface of the curable resin to prevent the inclusion of air bubbles. By stacking the materials so that the contact area is gradually expanded, it is possible to duplicate the optical recording body in which no air bubbles are mixed in the resin. As a result, duplication of an optical recording medium having a low error rate is possible without increasing the number of steps, and the duplication yield is improved, and the production cost can be reduced.
第１図は本発明に係る光記録体の複製方法の１実施例を
説明するための図、第２図および第３図は光記録体の複
製方法の従来例を説明するための図である。 １……型、２……樹脂、３……基材。FIG. 1 is a diagram for explaining an embodiment of an optical recording medium duplicating method according to the present invention, and FIGS. 2 and 3 are diagrams for explaining a conventional example of an optical recording medium duplicating method. . 1 ... Mold, 2 ... Resin, 3 ... Base material.
Claims (1)
化型樹脂を滴下し、その上に基材を積置し、次いで硬化
型樹脂を硬化させて基材と硬化型樹脂とを一体化し、そ
の後一体化した基材と硬化型樹脂を上記型から離型する
ことによって、基材上に情報記録パターンの設けられた
樹脂層を複製する光記録体の複製方法において、 上記基材は硬化型樹脂に向けて滑らかな凸状湾曲面を有
し、 上記型上に塗布された硬化型樹脂は、100乃至5000cpsの
粘度を有するとともに、該型上にて上記基材に向けて滑
らかな凸状湾曲面を有し、 上記基材を硬化型樹脂に最初に接触させる際に、上記基
材の滑らかな凸状湾曲面の凸部を上記硬化型樹脂の滑ら
かな凸状湾曲面の凸部に点接触、又は、線接触させ、 次いで積置の過程中に気泡が混入しないように上記基材
を上記接触状態から上記硬化型樹脂に対して接触する面
積を徐々に拡げられて積置することを特徴とする光記録
体の複製方法。1. A curable resin is dropped on a mold having an information recording pattern on its surface, a base material is stacked on the mold, and then the curable resin is cured to integrate the base material and the curable resin. Then, in the optical recording medium duplication method of duplicating the resin layer provided with the information recording pattern on the base material by releasing the integrated base material and the curable resin from the mold, the base material is cured. It has a smooth convex curved surface toward the mold resin, and the curable resin applied on the mold has a viscosity of 100 to 5000 cps and a smooth convex surface on the mold toward the base material. Has a curved surface, and when the base material is first contacted with the curable resin, the convex portion of the smooth convex curved surface of the base material is replaced by the convex portion of the smooth convex curved surface of the curable resin. Point contact or line contact with the above, and then above to prevent air bubbles from entering during the stacking process. The method of replicating an optical recording medium, characterized in that the wood is spread gradually the area of contact with the curable resin from the contact state to a product location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63271543A JP2530696B2 (en) | 1988-10-27 | 1988-10-27 | Optical recording medium duplication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63271543A JP2530696B2 (en) | 1988-10-27 | 1988-10-27 | Optical recording medium duplication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02118932A JPH02118932A (en) | 1990-05-07 |
| JP2530696B2 true JP2530696B2 (en) | 1996-09-04 |
Family
ID=17501531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63271543A Expired - Fee Related JP2530696B2 (en) | 1988-10-27 | 1988-10-27 | Optical recording medium duplication method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2530696B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11300829A (en) * | 1998-04-22 | 1999-11-02 | Toyota Motor Corp | Production of metal film having embossed pattern |
| JP5082262B2 (en) * | 2006-03-03 | 2012-11-28 | コニカミノルタホールディングス株式会社 | Manufacturing method of resin film |
| JP5139157B2 (en) * | 2008-06-02 | 2013-02-06 | 住友電気工業株式会社 | Thermoplastic resin processing method and processing apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61213132A (en) * | 1985-03-20 | 1986-09-22 | Hitachi Maxell Ltd | Manufacture of information recording disc |
| JPS61213131A (en) * | 1985-03-20 | 1986-09-22 | Hitachi Maxell Ltd | Manufacture of information recording disc |
-
1988
- 1988-10-27 JP JP63271543A patent/JP2530696B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02118932A (en) | 1990-05-07 |
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