JPH02118932A - Method for reproducing optical recording medium - Google Patents
Method for reproducing optical recording mediumInfo
- Publication number
- JPH02118932A JPH02118932A JP27154388A JP27154388A JPH02118932A JP H02118932 A JPH02118932 A JP H02118932A JP 27154388 A JP27154388 A JP 27154388A JP 27154388 A JP27154388 A JP 27154388A JP H02118932 A JPH02118932 A JP H02118932A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- base material
- contact
- recording medium
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 27
- 239000011347 resin Substances 0.000 claims abstract description 55
- 229920005989 resin Polymers 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 36
- 238000007796 conventional method Methods 0.000 abstract description 3
- 230000003467 diminishing effect Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、光学的に情報の再生が可能な光記録体に関し
、さらに詳しくは、２ Ｐ （ｐｈｏｔｏ ｐｏｌｙｍ
ｅｒｉｚａｔｉｏｎ）法と呼ばれる方法により製造され
る光記録体に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optical recording medium capable of optically reproducing information.
The present invention relates to an optical recording medium manufactured by a method called the erization method.
第２図および第３図は光記録体の？ｊＩ製方法の従来例
を説明するだめの図である。2 and 3 are optical recording media? FIG. 2 is a diagram illustrating a conventional example of a jI manufacturing method.
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、幾つかの成形法が堤案され
ているが、微細な情ｆｆＪ記録パターンの転写精度の極
めて高い２ Ｐ （ｐｈｏｔｏ ｐ。In order to achieve high-density recording, it is necessary for an optical recording medium to form a concave-convex optical information recording pattern on a base material for the optical recording medium. For this reason, several molding methods have been proposed in the past, but 2P (photo p) has extremely high transfer accuracy of fine information recording patterns.
ｌｙｍｅｒｉｚａｔｉｏｎ ）法と呼ばれる方法が盛ん
に検討されている。A method called the lymerization method is being 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 typical process of duplicating an optical recording medium using the 2P method. The outline of the 2P method will be explained 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（ｆｌ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 irregularities on its surface corresponding to the information recording pattern. In the 2P method, first,
On top of this mold 1, an ultraviolet curable resin 2 is applied as shown in FIG. place After that, the resin 2 is cured by irradiating ultraviolet rays as shown in FIG. The information recording pattern is transferred and formed.
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？、ｌｌ 離することにより、気泡の混入を
防く方法もある（特開昭６３−８１６３９号公報）。Also, as a method of applying ultraviolet curable resin, see Figure 3(a).
When the base material 3 is stacked on the curable resin 2 as shown in FIG. They are brought into contact and stacked one on top of the other, and the resin 2 is cured to form the mold 1 as shown in (C) and (d) of the figure. , ll There is also a method of preventing air bubbles from being mixed in by separating them (Japanese Unexamined Patent Publication No. 81639/1983).
〔発明が解決しようとする課題］
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、例えばスタンバ−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
加等の問題が生していた。[Problems to be Solved by the Invention] However, in the conventional 2P molding method such as the above-mentioned former, the resin applied on a mold such as a stambar spreads over time, and the base material is stacked on the resin. In this case, the contact area becomes large. Therefore, air bubbles are likely to be caught between the contacting surfaces of the two, and the air bubbles are mixed into the resin layer, resulting in 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。Furthermore, as shown in Japanese Patent Application Laid-Open No. 63-81639, the latter method involves coating the resin on the base material and preventing the resin from spreading due to its own weight, but the coating method itself has its own drawbacks. Furthermore, since the resin 2 is also applied onto the base material 3, there are problems such as an increase in the number of steps, which is not preferable.
本発明は、上記の課題を解決するものであって、その目
的は、樹脂中の気泡の混入を防ぐことにより、エラーレ
ートが低くかっ歩留ま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 solves the above-mentioned problems, and its purpose is to provide a method for duplicating an optical recording medium with a low error rate and high yield by preventing air bubbles from being mixed into the resin. .
そのために本発明は、鋭５窃検討の結果２Ｐ法による光
記録体の複製において、基材を樹脂上に積置する際、基
材を下に凸になるように湾曲させ、樹脂との接触面積が
小さくなるように重ね合わせることを特徴とするもので
あり、この複製方法により上記問題点を解決し得ること
を見出して本発明を完成したものである。To this end, as a result of a review of 5-point theft, the present invention was developed by curving the base material in a downwardly convex manner when stacking the base material on the resin when duplicating an optical recording medium using the 2P method. This duplication method is characterized by overlapping to reduce the area, and the present invention was completed by discovering that the above-mentioned problems could be solved by this duplication method.
本発明の光記録体の用型方法では、ドに凸ニするように
基材を湾曲させ、樹脂との接触面積が小さくなるように
樹脂上に基材を重ね合わせるので、樹脂と基［オとがｒ
［λ初は点又は線）妾触となる。したがって、点又は線
ＩＵ触の状ｆ［から次第に接触面積が大きくなるように
してＷＦＡをｆ−１脂上に１ｎ置し、樹脂を硬化させて
一体化した期（オと１↓１脂を型から７１１離すること
により、樹脂中に気泡が’（１Ｍ人するのを防ぐことが
できる。In the molding method for an optical recording medium of the present invention, the base material is curved so as to have a convex shape, and the base material is overlaid on the resin so that the contact area with the resin is small. Toga r
[λ first is a point or line) Becomes a concubine. Therefore, 1n of WFA was placed on the f-1 fat so that the contact area gradually increased from the point or line IU contact shape f By separating the resin from the mold, it is possible to prevent air bubbles from forming in the resin.
：実も笹例； 以Ｆ、図面を参照しつつ実施例を説明する。: Fruit and bamboo example; 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
説明するだめの図である。FIG. 1 is a diagram for explaining one embodiment of the method for duplicating an optical recording medium according to the present invention.
本発明の１Ｓｉ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
バ−等の型１上に硬化型樹脂２を塗布する。The 1Si manufacturing method of the present invention, as shown in FIG. 1(a),
First, a curable resin 2 is applied onto a mold 1, such as a stand bar, which has an information recording pattern on its surface.
次に同図（ｂ）に示すように１，１曲させた基十第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９つまり、基ｔ第３が湾曲した状態で樹
脂２と接触するため基材３と樹脂２の最初の接触が点ま
たは線になった状態がら、わずかずつ接触面積が拡げら
れてゆく。Next, as shown in the same figure (b), after contacting the base 10 3 bent by 1, 1 with the resin 2, as shown in the same figure (C), the contact area is expanded 9, that is, the base t Since the third contacts the resin 2 in a curved state, the initial contact between the base material 3 and the resin 2 is a point or a line, but the contact area gradually expands.
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、−度に大面積が接触する従来法とは異なり気泡が
混入するのを防くことができる。In this way, since the base material 3 and the resin 2 are in point or line contact, it is possible to prevent air bubbles from being mixed in, unlike the conventional method in which a large area is in contact with each other.
すなわら、従来法は基材３と樹脂２が最初がら面接触と
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、−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６３−８１６３９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ｌ毘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 other words, in the conventional method, the base material 3 and the resin 2 are in surface contact from the beginning, and a large area is in contact at once, so air bubbles are likely to be mixed in. However, according to the method of the present invention, there is no such surface contact. , - large areas do not touch each other. Furthermore, since the contact area gradually increases from point or line contact, it is possible to prevent air bubbles from entering. Furthermore, since there is no step of applying the resin 2 onto the base material 3 as in the conventional example shown in FIG. . Therefore, by the above operation, while preventing air bubbles from entering the resin 2, the mold 1
A base material 3 can be stacked on top. Ultraviolet rays are irradiated from the side of the base materials 3 stacked in this way, and
), by curing and integrating the resin 2 and peeling off the mold 1, the information recording pattern on the mold 1 can be transfer-molded onto the base material 3 in a bubble-free state.
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 without destroying the base material.
本発明に用いる基材としては、フレキンビリティのある
材料である必要があり、ポリメチルメタクリレート（Ｐ
ＭＭＡ） 、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 base material used in the present invention must be a material with flexibility, and polymethyl methacrylate (P
Plastic resins such as MMA), polycarbonate (PC), polyester, epoxy, polyolefin, and polystyrene are desirable.
また、本発明に用いる樹脂としては、−船釣な紫外線硬
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。In addition, the resin used in the present invention includes ultraviolet curable resins and electron beam curable resins, but the viscosity is such that the degree of spreading is small over time after coating the resin on the mold. For example, a resin composition having a clay range of 100 to 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、表面にピンチ１／Ｉｍ、段差８００人の凹凸状光
学的情報記録パターンの形成されたスタンパ−（２０ｃ
ｍ）１上の中央に紫外線硬化型の樹脂（商品名、５Ｓ−
１２０、会社名；スリーボンド）２をデイスペンサーに
より０．５ｃｍ’滴下した。そして１５ｃｍ 、ｒ￥
さ０，４ｍｍのポリカーボネート樹脂基材３をＲ−２５
ｃｍ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−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−１から剥離して光記録体の複製
を行った。First, a stamper (20c
m) At the center of 1 is an ultraviolet curing resin (trade name, 5S-
120, company name; Three Bond) 2 was dropped by 0.5 cm' using a dispenser. And 15cm, r￥
R-25 polycarbonate resin base material 3 with a diameter of 0.4 mm
It was bent to a length of cm and stacked on resin 2 so as to be convex downward. At that time, the base material 3 was placed so that its center was in contact with the center of the resin 2. After that, gradually expand the contact surface and completely cover the base material 3.
were stacked on stamper 1. Furthermore, the resin 2 is cured by irradiating ultraviolet rays from the base material 3 side, and the resin 2 is cured and integrated.
The layer and base material 3 were peeled off from the stamper 1 to reproduce an optical recording medium.
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 examination of the replicated product as described above revealed that no bubbles were observed and a good optical recording medium was obtained.
以上説明したように、本発明に係る光記録体の複製方法
によれば、型上の硬化性樹脂とＷ十イが、最初は点又は
線接触し、その後次第に接触面積が大きくなるため、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が工程数の増加なくで
きる。しかも、？３！製歩留まりが向上し、生産コスト
の低減を回ることもできる。As explained above, according to the method for duplicating an optical recording medium according to the present invention, the curable resin on the mold and the W 10 first make point or line contact, and then the contact area gradually increases, so that the resin It is possible to reproduce an optical recording medium without the inclusion of air bubbles therein. As a result, an optical recording medium with a low error rate can be produced without increasing the number of manufacturing steps. Moreover,? 3! It also improves manufacturing yield and reduces production costs.
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３Ｖ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。
■・・・型、２・・・樹脂、３・・・基材。
苑１ 図
出 願 人 大日本印刷株式会社
代理人 弁理士 阿 部 龍 吉（外５名）第２図
第３図FIG. 1 is a diagram for explaining one embodiment of the method for duplicating an optical recording medium according to the present invention, and FIGS. 2 and 3V are diagrams for explaining a conventional example of the method for duplicating an optical recording medium. ■...Mold, 2...Resin, 3...Base material. Soon 1 Figure applicant Dai Nippon Printing Co., Ltd. agent Patent attorney Ryukichi Abe (5 others) Figure 2 Figure 3
Claims (1)
樹脂を滴下し、その上に基材を重ねて積置し、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前記型から離型す
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、基材
を凸に湾曲した状態にして型上に塗布された硬化型樹脂
と接触させることによって硬化型樹脂との最初の接触が
小さくなるようにしたことを特徴とする光記録体の複製
方法。(1) Drop a curable resin onto a mold having an information recording pattern on its surface, stack the base material on top of it, and then cure the curable resin to integrate the base material and the curable resin. turned into
In a method for duplicating an optical recording medium, the base material is curved convexly in a method for duplicating a resin layer provided with an information recording pattern on the base material by subsequently releasing the integrated base material and the curable resin from the mold. 1. A method for duplicating an optical recording medium, characterized in that the initial contact with the curable resin is reduced by contacting the curable resin coated on the mold in a cured state.
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 true JPH02118932A (en) | 1990-05-07 |
| JP2530696B2 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) |
Cited By (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 |
| JP2007230166A (en) * | 2006-03-03 | 2007-09-13 | Konica Minolta Holdings Inc | Manufacturing method of resin sheet |
| JP2009291948A (en) * | 2008-06-02 | 2009-12-17 | Sumitomo Electric Ind Ltd | Method and apparatus for treating thermoplastic resin |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61213131A (en) * | 1985-03-20 | 1986-09-22 | Hitachi Maxell Ltd | Manufacture of information recording disc |
| JPS61213132A (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
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61213131A (en) * | 1985-03-20 | 1986-09-22 | Hitachi Maxell Ltd | Manufacture of information recording disc |
| JPS61213132A (en) * | 1985-03-20 | 1986-09-22 | Hitachi Maxell Ltd | Manufacture of information recording disc |
Cited By (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 |
| JP2007230166A (en) * | 2006-03-03 | 2007-09-13 | Konica Minolta Holdings Inc | Manufacturing method of resin sheet |
| JP2009291948A (en) * | 2008-06-02 | 2009-12-17 | Sumitomo Electric Ind Ltd | Method and apparatus for treating thermoplastic resin |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2530696B2 (en) | 1996-09-04 |
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