JPS6218635A - Method for reproduction of optical recording medium - Google Patents
Method for reproduction of optical recording mediumInfo
- Publication number
- JPS6218635A JPS6218635A JP15691185A JP15691185A JPS6218635A JP S6218635 A JPS6218635 A JP S6218635A JP 15691185 A JP15691185 A JP 15691185A JP 15691185 A JP15691185 A JP 15691185A JP S6218635 A JPS6218635 A JP S6218635A
- Authority
- JP
- Japan
- Prior art keywords
- stamper
- thermosetting resin
- optical recording
- substrate
- pattern
- 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
Landscapes
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔概 要〕
光ディスク等の光記録媒体を複製するに当って、原盤か
ら製作したスタンパのプリグルーブパターンを熱硬化性
樹脂をパターン転写材料として使用して媒体基板に転写
する。本発明によれば、高耐熱性のパターン転写層がで
き、るので、情報の書き込みや再生時等にレーザー光を
照射してもパターンの変形が惹起されることはない。本
発明によれば、従来方法に比較して工程が少なくて済み
、したがって、欠陥ができにくい。[Detailed Description of the Invention] [Summary] When duplicating an optical recording medium such as an optical disk, a pregroove pattern of a stamper made from a master is transferred to a media substrate using a thermosetting resin as a pattern transfer material. do. According to the present invention, a highly heat-resistant pattern transfer layer is produced, so that even if laser light is irradiated during writing or reproducing information, the pattern will not be deformed. According to the present invention, fewer steps are required compared to conventional methods, and therefore defects are less likely to occur.
本発明は光記録媒体の複製方法に関する。本発明は、さ
らに詳しく述べると、例えばレーザー光を照射して情報
の書き込みや再生等を行なう形式の光記録媒体、例えば
光ディスク等を光記録媒体復製用原盤から製作したスタ
ンパを用いて複製する方法に関する。The present invention relates to a method for duplicating optical recording media. More specifically, the present invention relates to a method for duplicating an optical recording medium, such as an optical disk, on which information is written or reproduced by irradiating a laser beam, using a stamper made from a master disc for optical recording medium reproduction. Regarding.
光ディスク等の光記録媒体の複製にプレス成形が広く用
いられていることは周知の通りである。It is well known that press molding is widely used for duplicating optical recording media such as optical disks.
この複製方法は、１枚の原盤から多数枚の金属スタンパ
を製造し、このスタンパの１つを用いてスタンパのプリ
グルーブパターンを媒体基板、例えばガラス、ポリメチ
ルメタクリレートのようなアクリル樹脂、ポリカーボネ
ート樹脂などの基板にプレス成形することからなってい
る。This duplication method involves manufacturing a number of metal stampers from a single master, and using one of the stampers to transfer the pregroove pattern of the stamper onto a media substrate, such as glass, acrylic resin such as polymethyl methacrylate, or polycarbonate resin. It consists of press molding onto a substrate such as.
プレス成形に代えて、光硬化性樹脂（フォトポリマー）
、熱可塑性樹脂などの転写材料を用いてスタンパのプリ
グルーブパターンを転写する方法ちまた公知である。例
えばフォトポリマーを用いた光記録媒体の複製方法は、
原盤から透明スタンパを製造し、この透明スタンパをそ
のパターン面を下側にして例えばアルミニウムのような
媒体基板上のフォトポリマ一層に押し付け、透明スタン
パ側から紫外線等の光を照射してフォトポリマ一層を硬
化させ、そして最後に得られた複製光記録媒体をスタン
パから剥離することからなる。Light-curing resin (photopolymer) instead of press molding
A method of transferring the pregroove pattern of a stamper using a transfer material such as a thermoplastic resin is also known. For example, a method for duplicating optical recording media using photopolymers is
A transparent stamper is manufactured from the master, and this transparent stamper is pressed with its patterned side downwards onto a layer of photopolymer on a medium substrate such as aluminum, and the transparent stamper is irradiated with light such as ultraviolet rays to form a layer of photopolymer. and finally peeling off the obtained duplicate optical recording medium from the stamper.
しかしながら、プリグループ転写材料としてフォトポリ
マー、熱可塑性材料などを使用して光記録媒体の複製を
実施した場合、転写材料が耐熱性に乏しいことに原因し
て、レーザー光による書き込み等の際に媒体が熱により
変形するという欠点がある。熱変形の防止のために保護
膜の追加等の層構成の改良や使用するレーザー光の出力
の低下が行なわれているというものの、いずれも満足す
べきものではない。なぜなら、保護膜の追加には処理工
程数の増加が必至であり、精度の低下や欠陥の発生を甘
受しなければならず、また、レーザー光の出力を下げた
場合には書き込みのためにかなりの長時間をさかなけれ
ばならない。本発明は、すなわち、これらの問題点を解
決して、レーザ光による書き込み時等においてプリグル
ーブパターンの変形を伴なわない光記録媒体の複製方法
を提供しようとするものである。However, when copying an optical recording medium using a photopolymer, thermoplastic material, etc. as a pregroup transfer material, the transfer material has poor heat resistance, which causes the media to be damaged during writing with laser light, etc. The disadvantage is that it deforms due to heat. In order to prevent thermal deformation, improvements have been made to the layer structure, such as adding a protective film, and reducing the output of the laser beam used, but none of these efforts are satisfactory. This is because adding a protective film inevitably requires an increase in the number of processing steps, and the user must accept a drop in accuracy and the occurrence of defects.Additionally, if the output of the laser light is lowered, the writing process will be significantly reduced. I have to spend a long time in bed. That is, the present invention aims to solve these problems and provide a method for duplicating an optical recording medium that does not involve deformation of the pregroove pattern during writing with a laser beam or the like.
本発明者らは、このたび、パターン転写材料として耐熱
性にすぐれた熱硬化性樹脂、好ましくはフェノール樹脂
、エポキシ樹脂、メラミン樹脂等を使用してスタンパの
プリグルーブパターンを媒体基板に転写することによっ
て上記問題点を解決し得るということを見い出した。The present inventors have recently discovered that a thermosetting resin with excellent heat resistance, preferably a phenol resin, an epoxy resin, a melamine resin, etc., is used as a pattern transfer material to transfer the pregroove pattern of a stamper onto a media substrate. We have found that the above problems can be solved by this method.
本発明による光記録媒体の複製方法は、その好ましい１
様態において、
光記録媒体複製用原盤からプリグルーブパターンを存す
るスタンパを製作し、
前記スタンパ上に揮発性の熱硬化性樹脂を塗布して熱処
理により硬化させ、
硬化せる熱硬化性樹脂層上に接着剤層を介して媒体基板
を接着し、そして
熱処理後、熱硬化性樹脂層に前記スタンパのプリグルー
ブパターンが転写されてなる媒体基板を前記スタンパか
ら剥離することからなる。The preferred method for copying an optical recording medium according to the present invention is
In this aspect, a stamper having a pregroove pattern is manufactured from a master disk for duplicating an optical recording medium, a volatile thermosetting resin is applied onto the stamper and cured by heat treatment, and the stamper is bonded onto the cured thermosetting resin layer. The process consists of adhering a medium substrate through an agent layer, and, after heat treatment, peeling off the medium substrate, on which the pregroove pattern of the stamper has been transferred to the thermosetting resin layer, from the stamper.
パターン転写材料として使用する熱硬化性樹脂が例えば
エポキシ系樹脂のような非揮発性の樹脂からなる場合、
上記した複製方法を変形して次のように実施することが
できる：
光記録媒体複製用原盤からプリグルーブパターンを有す
るスタンパを製作し、
前記スタンパ上に離型剤及び非揮発性の熱硬化性樹脂を
順次塗布し、
形成せる熱硬化性樹脂層に媒体基板を押し付けて前記熱
硬化性樹脂層を熱処理により硬化させ、そして
熱硬化性樹脂層に前記スタンパのプリグルーブパターン
が転写されてなる媒体基板を前記スタンパから剥離する
。When the thermosetting resin used as the pattern transfer material is made of a non-volatile resin such as an epoxy resin,
The above duplication method can be modified and carried out as follows: A stamper having a pregroove pattern is manufactured from a master disk for optical recording medium duplication, and a mold release agent and a non-volatile thermosetting material are applied on the stamper. A medium in which a resin is sequentially applied, a medium substrate is pressed against the thermosetting resin layer to be formed, the thermosetting resin layer is cured by heat treatment, and the pregroove pattern of the stamper is transferred to the thermosetting resin layer. The substrate is peeled off from the stamper.
この変形方法の実施に使用するのに適当な離型剤はニト
ロセルロースなどである。この方法によれば、接着剤層
を介在させることが不要となるので、転写工程を著しく
簡略化することができる。Suitable mold release agents for use in carrying out this modification process include nitrocellulose. According to this method, since it is not necessary to provide an adhesive layer, the transfer process can be significantly simplified.
本発明の実施において、使用する媒体基板は特に限定さ
れるものでなく、したがって、ガラス基板、ポリメチル
メタクリレートのようなアクリル樹脂の基板、ポリカー
ボネート樹脂の基板、例えばアルミニウムのような金属
の基板などを任意に使用することができる。ガラス基板
や金属基板がとりわけ有用である。In carrying out the present invention, the media substrate used is not particularly limited, and therefore, glass substrates, acrylic resin substrates such as polymethyl methacrylate, polycarbonate resin substrates, metal substrates such as aluminum, etc. Can be used arbitrarily. Glass substrates and metal substrates are particularly useful.
本発明方法の好ましい一実施例を添付の図面を参照しな
がら説明する：
例 １
最初に、原盤（図示せず）から常法に従いスタンパ１を
製作した。このスタンパ１はニッケルからなり、そして
、第１ａ図に示されるように、複製されるべきプリグル
ーブパターンに対応するパターン２を表面に有する。A preferred embodiment of the method of the present invention will be described with reference to the accompanying drawings: Example 1 First, a stamper 1 was manufactured from a master (not shown) according to a conventional method. This stamper 1 is made of nickel and has a pattern 2 on its surface corresponding to the pregroove pattern to be replicated, as shown in FIG. 1a.
次いで、製作したスタンパ上に昭和ユニオン合成−から
商品名ＢＫＲ２６２０として入手可能なフェノール樹脂
を２０％メチルエチルケトン溶液の形でスピンコードに
より塗布し、２００℃で３０分間にわたって熱処理して
硬化させた（第１ｂ図）。Next, a phenolic resin available from Showa Union Gosei under the trade name BKR2620 in the form of a 20% methyl ethyl ketone solution was applied onto the manufactured stamper using a spin cord, and the resin was heat-treated at 200° C. for 30 minutes to cure it (Part 1b). figure).
層３の硬化が完了した後、セメダイン■から商品名ＥＰ
３３０として入手可能なエポキシ系接着剤を塗布し、
この接着剤層４が乾燥しないうちにガラス基板５を接着
し、１２０℃で３０分間にわたって熱処理した。第１Ｃ
図に断面で示されるような一体化物が得られた。After the curing of layer 3 is completed, apply the product name EP from Cemedine ■.
Apply epoxy adhesive available as 330,
A glass substrate 5 was attached to the adhesive layer 4 before it dried, and heat treatment was performed at 120° C. for 30 minutes. 1st C
An integrated product as shown in cross section in the figure was obtained.
引き続いて、第１ｄ図に示されるように、上方に形成さ
れたフェノール樹脂層３にスタンパのプリグルーブパタ
ーンが転写されてなるガラス基板５をスタンパから剥離
した。ガラス基板上のプリグルーブパターンに出力５０
ｍＷで半導体レーザー光を照射して熱変形の有無を光学
顕微鏡で観察したところ、少しの変形も認められなかっ
た。実際、本例で製造した複製光記録媒体を用いた場合
には最低１万回のレーザー光書き込みが可能であった・
！Ｌ−１
前記例１に記載の手法を繰り返した。但し、本例の場合
、パターン層３の形成のために非揮発性のエポキシ樹脂
：セメダイン■から商品名ＥＰ ３３０として入手可能
、を使用し、また、接着剤層４を省略した。本例では、
スタンパ上にエポキシ樹脂を塗布し、これにガラス基板
を押し付けた後で両方を一緒に熱処理した。熱処理の条
件は１２０℃で３０分間であった。なお、本例の場合、
スタンパ上にエポキシ樹脂を塗布するに先がけて離型剤
としてのニトロセルロースを予め薄く塗布しておいた。Subsequently, as shown in FIG. 1d, the glass substrate 5, on which the pregroove pattern of the stamper was transferred to the phenolic resin layer 3 formed above, was peeled off from the stamper. Output 50 to pregroove pattern on glass substrate
When the semiconductor laser beam was irradiated at mW and the presence or absence of thermal deformation was observed using an optical microscope, no deformation was observed. In fact, when using the duplicate optical recording medium manufactured in this example, it was possible to perform laser beam writing at least 10,000 times! L-1 The procedure described in Example 1 above was repeated. However, in the case of this example, a non-volatile epoxy resin available from Cemedine ■ under the trade name EP 330 was used to form the pattern layer 3, and the adhesive layer 4 was omitted. In this example,
Epoxy resin was applied onto the stamper, a glass substrate was pressed onto it, and then both were heat treated together. The heat treatment conditions were 120° C. for 30 minutes. In addition, in this example,
Prior to applying the epoxy resin onto the stamper, a thin layer of nitrocellulose as a mold release agent was applied in advance.
前記例１に記載のものと同様な満足すべき複製光記録媒
体が得られた。A satisfactory reproduction optical recording medium similar to that described in Example 1 above was obtained.
本発明によれば、プリグルーブパターン転写層が高耐熱
性を有する光記録媒体を複製することができ、したがっ
て、少なくとも１万回、通常１００万回のオーダーで熱
変形を伴なわずに繰り返しレーザー照射による書き換え
を行なうことができる。According to the present invention, it is possible to reproduce optical recording media in which the pregroove pattern transfer layer has high heat resistance, and therefore, the laser beam can be repeatedly used at least 10,000 times, usually on the order of 1 million times, without thermal deformation. Rewriting can be performed by irradiation.
第１ａ図〜第１ｄ図は、それぞれ、本発明の好ましい一
例を順を追って示した断面図である。図中、１はスタン
パ基板、２は転写パターン、３は複製光記録媒体のプリ
グルーブパターン層、４は接着剤層、そして５は媒体基
板である。FIGS. 1a to 1d are sectional views sequentially showing a preferred example of the present invention. In the figure, 1 is a stamper substrate, 2 is a transfer pattern, 3 is a pregroove pattern layer of a duplicate optical recording medium, 4 is an adhesive layer, and 5 is a medium substrate.
Claims (1)
して光記録媒体を複製する方法であって、熱硬化性樹脂
を用いてパターン転写を行なうことを特徴とする光記録
媒体の複製方法。 ２、光記録媒体複製用原盤からプリグルーブパターンを
有するスタンパを製作し、 前記スタンパ上に揮発性の熱硬化性樹脂を塗布して熱処
理により硬化させ、 硬化せる熱硬化性樹脂層上に接着剤層を介して媒体基板
を接着し、そして 熱処理後、熱硬化性樹脂層に前記スタンパのプリグルー
ブパターンが転写されてなる媒体基板を前記スタンパか
ら剥離する、特許請求の範囲第１項に記載の複製方法。 ３、光記録媒体複製用原盤からプリグルーブパターンを
有するスタンパを製作し、 前記スタンパ上に離型剤及び非揮発性の熱硬化性樹脂を
順次塗布し、 形成せる熱硬化性樹脂層に媒体基板を押し付けて前記熱
硬化性樹脂層を熱処理により硬化させ、そして 熱硬化性樹脂層に前記スタンパのプリグルーブパターン
が転写されてなる媒体基板を前記スタンパから剥離する
、特許請求の範囲第１項に記載の複製方法。[Claims] 1. A method for duplicating an optical recording medium by transferring a pregroove pattern of a stamper onto a medium substrate, the optical recording medium characterized in that the pattern is transferred using a thermosetting resin. How to reproduce. 2. Fabricate a stamper with a pregroove pattern from a master disk for optical recording medium duplication, apply a volatile thermosetting resin onto the stamper and harden it by heat treatment, and apply an adhesive on the hardened thermosetting resin layer. 1. The method according to claim 1, wherein the media substrate is bonded through a layer, and after heat treatment, the media substrate having the pregroove pattern of the stamper transferred to the thermosetting resin layer is peeled from the stamper. Replication method. 3. Fabricate a stamper with a pregroove pattern from a master disk for optical recording media duplication, sequentially apply a mold release agent and a non-volatile thermosetting resin onto the stamper, and apply a media substrate to the formed thermosetting resin layer. , the thermosetting resin layer is cured by heat treatment, and the medium substrate having the pregroove pattern of the stamper transferred to the thermosetting resin layer is peeled from the stamper. Reproduction method described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15691185A JPS6218635A (en) | 1985-07-18 | 1985-07-18 | Method for reproduction of optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15691185A JPS6218635A (en) | 1985-07-18 | 1985-07-18 | Method for reproduction of optical recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6218635A true JPS6218635A (en) | 1987-01-27 |
Family
ID=15638076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15691185A Pending JPS6218635A (en) | 1985-07-18 | 1985-07-18 | Method for reproduction of optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6218635A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0324288A (en) * | 1989-06-21 | 1991-02-01 | Japan Carlit Co Ltd:The | Lead dioxide-coated electrode and its production |
| JPH03141490A (en) * | 1989-10-26 | 1991-06-17 | Hitachi Ltd | System and device for automatic cash transaction |
| EP0770995A1 (en) * | 1995-05-11 | 1997-05-02 | Seiko Epson Corporation | Optical disk and production method thereof |
-
1985
- 1985-07-18 JP JP15691185A patent/JPS6218635A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0324288A (en) * | 1989-06-21 | 1991-02-01 | Japan Carlit Co Ltd:The | Lead dioxide-coated electrode and its production |
| JPH03141490A (en) * | 1989-10-26 | 1991-06-17 | Hitachi Ltd | System and device for automatic cash transaction |
| EP0770995A1 (en) * | 1995-05-11 | 1997-05-02 | Seiko Epson Corporation | Optical disk and production method thereof |
| EP0770995A4 (en) * | 1995-05-11 | 1998-08-19 | Seiko Epson Corp | Optical disk and production method thereof |
| US6120870A (en) * | 1995-05-11 | 2000-09-19 | Seiko Epson Corporation | Optical disk and production method thereof |
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