JP2003296975A - Method for manufacturing information recording master disk - Google Patents

Method for manufacturing information recording master disk

Info

Publication number
JP2003296975A
JP2003296975A JP2002097141A JP2002097141A JP2003296975A JP 2003296975 A JP2003296975 A JP 2003296975A JP 2002097141 A JP2002097141 A JP 2002097141A JP 2002097141 A JP2002097141 A JP 2002097141A JP 2003296975 A JP2003296975 A JP 2003296975A
Authority
JP
Japan
Prior art keywords
recording
photoresist film
information
manufacturing
master
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
Application number
JP2002097141A
Other languages
Japanese (ja)
Inventor
Akiyoshi Ito
彰義 伊藤
Katsuji Nakagawa
活二 中川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nihon University
Original Assignee
Nihon University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nihon University filed Critical Nihon University
Priority to JP2002097141A priority Critical patent/JP2003296975A/en
Publication of JP2003296975A publication Critical patent/JP2003296975A/en
Pending legal-status Critical Current

Links

Abstract

<P>PROBLEM TO BE SOLVED: To manufacturing a recording medium formed with recording marks of a specified width and different depths. <P>SOLUTION: The method for manufacturing the information recording master disk has at least a first process step of forming a plurality of layers of photoresist layers reacting with a plurality of prescribed different wavelengths on a recording master disk, a second process step of forming exposed parts of the prescribed width and the depths meeting the information to be recorded by irradiating the photoresist films with laser beams having a plurality of the prescribed different wavelengths and a third process step of developing the exposed parts and forming the prescribed recording patterns and manufactures the information recording master disk having the recording patterns of the depths meeting the information to be recorded. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、フォトレジスト膜
を形成し、上記フォトレジスト膜に深度の異なる露光部
を形成する情報記録原盤製造方法に関する。 【0002】 【従来の技術】CD−ROM等の再生専用媒体は、所定
の製造工程を経て製造されている。以下に、図3を用い
てCD−ROMの製造工程を説明する。 【0003】図3(a)に示す工程1では、ガラス原盤
10上に所定の膜厚でフォトレジスト膜を形成する。な
お、ガラス原盤10とフォトレジスト膜11との密着力
を高めるために、ガラス原盤10とフォトレジスト膜1
1との間に密着剤が塗布されている。そして、図3
(b)に示す工程2に進む。図3(b)に示す工程2で
は、フォトレジスト膜11が形成されたガラス原盤10
をカッティングマシンのターンテーブルに取り付け、記
録する情報に基づいて変調されたレーザ光を照射し、フ
ォトレジスト膜11を露光し、露光部12を形成する。
そして、図3(c)に示す工程3に進む。 【0004】図3(c)に示す工程3では、現像液によ
りフォトレジスト膜11を現像する。この現像により露
光部12のフォトレジスト膜11が除去され、ガラス原
盤10上にレジストパターンが形成される。そして、図
3(d)に示す工程4に進む。図3(d)に示す工程4
では、ガラス原盤10をスパッタ装置に設置し、レジス
トパターンの表面にニッケル等の導電膜13を形成す
る。そして、図3(e)に示す工程5に進む。 【0005】図3(e)に示す工程5では、ガラス原盤
10をメッキ処理装置に設置し、ニッケル電鋳を行い、
導電膜13上に電鋳層14を形成する。そして、図3
(f)に示す工程6に進む。図3(f)に示す工程6で
は、ガラス原盤10からレジストパターンが転写された
電鋳層14を剥離する。そして、図3(g)に示す工程
7に進む。 【0006】図3(g)に示す工程7では、電鋳層14
に付着したフォトレジスト膜11を除去し、電鋳層14
を所定の形状に加工する。こうして出来上がったものを
スタンパといい、上記スタンパを射出形成機の金型に取
り付け、ポリカーボネイト等の樹脂基板を成形すること
によりCD−ROMが製造される。 【0007】こうして製造されたCD−ROMでは、記
録マークが媒体の面内方向に形成されており、上記記録
マークの有無、長さ、幅あるいは位置等を所定の方法に
より検出することで、情報が再生される。 【0008】また、近年、IT産業の目覚ましい発展に
より、データ量の大きな情報を扱う機会が多くなってき
ており、これにともない、記録媒体の大容量化が求めら
れている。例えば、図3(b)に示した工程において、
露光する際のレーザ光を絞ることにより、記録媒体に形
成する記録マークサイズを微小化して記録密度を向上
し、記録媒体の大容量化を図っている。 【0009】記録密度は、上記レーザ光の波長λ及び上
記レーザ光をフォトレジスト膜11に集光する対物レン
ズの開口数NAに依存する。レーザ光のスポット径R
は、以下の式に示すとおり、上記波長λと開口数NAに
より決まる。 R∝λ/NA (1) 従って、記録媒体の記録密度の向上には、スポット径R
の小規模化を図る必要がある。 【0010】 【発明が解決しようとする課題】しかし、レーザ光の波
長λは、使用可能な半導体レーザに依存し、また、対物
レンズの開口数NAは、構造的な制限があり、現在のシ
ステムにおいては、光スポット径の小規模化に限界があ
る。 【0011】そこで、媒体の垂直方向に深度の異なる記
録マークを形成することで、記録密度の向上を図る方法
が提案されている。この方法では、記録する情報に基づ
いて記録マークの深度を変えることにより、再生光を照
射したときに、強度の異なる反射再生光を得ることがで
き、また、照射する再生光の波長を変調させることによ
り、異なる再生信号を得ることができる。 【0012】ところが、従来の方法をそのまま適用する
と、深度の深い記録マークを形成する際に、大きな光パ
ワーの光ビームをフォトレジスト膜に照射することにな
り、記録マークの幅が広がってしまう問題がある。 【0013】そこで、本発明は、上述したような実情に
鑑みて提案されたものであり、記録マークの幅を変える
ことなく記録マークの深度を変えることができ、記録密
度の向上を図った情報記録原盤を製造することができる
情報記録原盤製造方法を提供することを目的とする。 【0014】 【課題を解決するための手段】本発明に係る情報記録原
盤製造方法は、上述の課題を解決するために、記録原盤
上に所定の複数の異なる波長に反応するフォトレジスト
膜を複数層形成する第1の工程と、上記フォトレジスト
膜に上記所定の複数の異なる波長を有するレーザ光を照
射し、一定幅でかつ、記録する情報に応じた深度の露光
部を形成する第2の工程と、上記露光部を現像し、所定
の記録パターンを形成する第3の工程とを少なくとも有
し、記録する情報に応じた深度の記録パターンを有する
情報記録原盤を製造する。 【0015】このような情報記録原盤製造方法では、記
録する情報に応じた深度の記録パターンを有する情報記
録原盤を製造する。 【0016】 【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しながら詳細に説明する。 【0017】本発明を適用した記録媒体製造方法では、
図1に示すような各工程を経て製造された記録原盤によ
り、一定幅でかつ、深度の異なる記録マークが形成され
た記録媒体を製造することができる。以下に、上記記録
媒体製造方法を説明する。なお、製造する記録媒体は、
CD−ROMとする。 【0018】図1(a)に示す工程1では、ガラス原盤
1上にフォトレジスト膜2を複数層形成する。なお、ガ
ラス原盤1とフォトレジスト膜2との密着力を高めるた
めに、ガラス原盤1とフォトレジスト膜2との間に密着
剤が塗布されている。ガラス原盤1上に形成されるフォ
トレジスト膜2は、所定の波長を有するレーザ光に反応
する性質を有している。 【0019】図1(b)に示す工程2では、フォトレジ
スト膜2が形成されたガラス原盤1をカッティングマシ
ンのターンテーブルに取り付け、レーザ光照射部6から
記録する情報に基づいて変調されたレーザ光が照射さ
れ、フォトレジスト膜2を露光し、露光部3を形成す
る。 【0020】ここで、露光部3の形成について図2を用
いて説明する。なお、工程1により、ガラス原盤1上に
は、図2に示すように、例えば、3つのフォトレジスト
膜2(第1のフォトレジスト膜2a、第2のフォトレジ
スト膜2b、第3のフォトレジスト膜2c)が形成され
ていることとする。 【0021】工程2において、レーザ光照射部6から第
1の波長λ1を有するレーザ光がフォトレジスト膜2の
所定の領域に照射された場合には、第1のフォトレジス
ト膜2aが反応し、図2(a)に示すように、レーザ光
が照射された第1のフォトレジスト膜2aの所定の領域
に露光部3が形成される。また、レーザ光照射部6から
第2の波長λ2を有するレーザ光がフォトレジスト膜2
の所定の領域に照射された場合には、第1のフォトレジ
スト膜2a及び第2のフォトレジスト膜2bが反応し、
図2(b)に示すように、レーザ光が照射された第1の
フォトレジスト膜2a及び第2のフォトレジスト膜2b
の所定の領域に露光部3が形成される。さらに、レーザ
光照射部6から第3の波長λ3を有するレーザ光がフォ
トレジスト膜2の所定の領域に照射された場合には、第
1のフォトレジスト膜2a、第2のフォトレジスト膜2
b及び第3のフォトレジスト膜2cが反応し、図2
(c)に示すように、レーザ光が照射された第1のフォ
トレジスト膜2a、第2のフォトレジスト膜2b及び第
3のフォトレジスト膜2cの所定の領域に露光部3が形
成される。なお、レーザ光の波長λ1〜λ3は、λ1<
λ2<λ3とする。 【0022】以上のように、ガラス原盤1上に複数層形
成されているフォトレジスト膜2に、記録する情報に基
づいて波長を変えたレーザ光を照射することにより、深
度の異なる露光部3を形成することができる。 【0023】図1(c)に示す工程3では、上述のよう
に露光部3が形成されているフォトレジスト膜2に現像
液を塗布し、現像処理を行う。この現像処理により露光
部3のフォトレジスト膜2が除去され、ガラス原盤1上
にレジストパターンが形成される。そして、図1(d)
に示す工程4に進む。 【0024】図1(d)に示す工程4では、ガラス原盤
1をスパッタ装置に設置し、スパッタによりレジストパ
ターンの表面にニッケル等の導電膜4を形成する。そし
て、図1(e)に示す工程5に進む。図1(e)に示す
工程5では、ガラス原盤1をメッキ処理装置に設置し、
ニッケル電鋳を行い、導電膜4上に電鋳層5を形成す
る。そして、図1(f)に示す工程6に進む。図1
(f)に示す工程6では、ガラス原盤1からレジストパ
ターンが転写された電鋳層5を剥離する。そして、図1
(g)に示す工程7に進む。 【0025】図1(g)に示す工程7では、電鋳層5に
付着したフォトレジスト膜2を除去し、電鋳層5を所定
の形状に加工する。工程7の加工処理により出来上がっ
たものをスタンパという。上記スタンパは、射出形成機
の金型に取り付けられる。射出形成機では、スタンパに
ポリカーボネイト等の樹脂基板を成型することによりC
D−ROMを製造する。 【0026】このようにして、本発明に係る記録媒体製
造方法では、ガラス原盤1上に所定の波長に反応するフ
ォトレジスト膜2を複数層形成し、形成したフォトレジ
スト膜2に記録する情報に基づいて波長を変えたレーザ
光を照射することにより、深度の異なる露光部3を形成
し、現像処理を行って、記録する情報に応じた深度の記
録パターンを有する情報記録原盤を製造するので、レー
ザ光のパワーを変えることなく、幅が一定でかつ、深度
の異なる記録マークが形成された記録媒体を製造するこ
とができる。また、本発明に係る記録媒体製造方法は、
製造した記録媒体上に形成されている深度の異なる記録
マークから反射率の異なる再生信号を検出することがで
き、また、深度の異なる記録マークに波長を変えた再生
光を照射することにより、異なる再生信号を得ることが
できるので、記録媒体の記録密度を大幅に向上すること
ができる。 【0027】 【発明の効果】以上詳細に説明したように、本発明に係
る情報記録原盤製造方法は、記録原盤上に所定の複数の
異なる波長に反応するフォトレジスト膜を複数層形成す
る第1の工程と、上記フォトレジスト膜に上記所定の複
数の異なる波長を有するレーザ光を照射し、一定幅でか
つ、記録する情報に応じた深度の露光部を形成する第2
の工程と、上記露光部を現像し、所定の記録パターンを
形成する第3の工程とを少なくとも有し、記録する情報
に応じた深度の記録パターンを有する情報記録原盤を製
造するので、光ビームのパワーを変えることなく、幅が
一定でかつ、深度の異なる記録マークを形成した記録媒
体を製造することができる。また、本発明に係る情報記
録原盤製造方法は、製造した記録媒体上に形成されてい
る深度の異なる記録マークから反射率の異なる再生信号
を検出することができ、また、深度の異なる記録マーク
に波長を変えた再生光を照射することにより、異なる光
再生信号を得ることができるので、記録媒体の記録密度
を大幅に向上することができる。
Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method for manufacturing an information recording master for forming a photoresist film and forming exposed portions having different depths in the photoresist film. 2. Description of the Related Art A read-only medium such as a CD-ROM is manufactured through a predetermined manufacturing process. Hereinafter, a manufacturing process of the CD-ROM will be described with reference to FIG. In a step 1 shown in FIG. 3A, a photoresist film having a predetermined thickness is formed on a glass master 10. In order to enhance the adhesion between the glass master 10 and the photoresist film 11, the glass master 10 and the photoresist
1 is coated with an adhesive. And FIG.
Proceed to step 2 shown in (b). In step 2 shown in FIG. 3B, the glass master 10 on which the photoresist film 11 is formed is formed.
Is mounted on a turntable of a cutting machine, and a laser beam modulated based on information to be recorded is irradiated to expose the photoresist film 11 to form an exposed portion 12.
Then, the process proceeds to Step 3 shown in FIG. In step 3 shown in FIG. 3C, the photoresist film 11 is developed with a developing solution. By this development, the photoresist film 11 of the exposed portion 12 is removed, and a resist pattern is formed on the glass master 10. Then, the process proceeds to step 4 shown in FIG. Step 4 shown in FIG.
Then, the glass master 10 is placed in a sputtering apparatus, and a conductive film 13 such as nickel is formed on the surface of the resist pattern. Then, the process proceeds to step 5 shown in FIG. In step 5 shown in FIG. 3 (e), the glass master 10 is set in a plating apparatus and nickel electroforming is performed.
An electroformed layer is formed on the conductive film. And FIG.
Proceed to step 6 shown in (f). In step 6 shown in FIG. 3F, the electroformed layer 14 to which the resist pattern has been transferred from the glass master 10 is peeled off. Then, the process proceeds to Step 7 shown in FIG. In step 7 shown in FIG. 3G, the electroformed layer 14 is formed.
The photoresist film 11 adhering to the electroformed layer 14 is removed.
Is processed into a predetermined shape. The completed product is called a stamper. The CD-ROM is manufactured by attaching the stamper to a mold of an injection molding machine and molding a resin substrate such as polycarbonate. In the CD-ROM manufactured as described above, the recording marks are formed in the in-plane direction of the medium, and the presence or absence, the length, the width or the position of the recording marks is detected by a predetermined method, so that the information is recorded. Is played. In recent years, with the remarkable development of the IT industry, opportunities for handling information having a large data amount have been increased, and accordingly, a large capacity of a recording medium has been demanded. For example, in the process shown in FIG.
By narrowing the laser beam at the time of exposure, the size of the recording mark formed on the recording medium is reduced, the recording density is improved, and the capacity of the recording medium is increased. The recording density depends on the wavelength λ of the laser light and the numerical aperture NA of the objective lens that focuses the laser light on the photoresist film 11. Laser beam spot diameter R
Is determined by the wavelength λ and the numerical aperture NA as shown in the following equation. R∝λ / NA (1) Therefore, to improve the recording density of the recording medium, the spot diameter R
Needs to be downsized. However, the wavelength λ of the laser beam depends on the available semiconductor laser, and the numerical aperture NA of the objective lens is structurally limited. In, there is a limit to downsizing the light spot diameter. Therefore, there has been proposed a method of improving recording density by forming recording marks having different depths in the vertical direction of the medium. In this method, by changing the depth of the recording mark based on the information to be recorded, it is possible to obtain reflected reproduction light having different intensity when irradiating the reproduction light, and to modulate the wavelength of the reproduction light to be irradiated. Thereby, different reproduction signals can be obtained. However, if the conventional method is applied as it is, when forming a recording mark having a large depth, a light beam having a large optical power is applied to the photoresist film, and the width of the recording mark is widened. There is. In view of the above, the present invention has been proposed in view of the above-mentioned circumstances, and it is possible to change the depth of a recording mark without changing the width of the recording mark, and to improve the recording density. It is an object of the present invention to provide an information recording master manufacturing method capable of manufacturing a recording master. [0014] In order to solve the above-mentioned problems, a method of manufacturing an information recording master according to the present invention comprises forming a plurality of photoresist films responsive to a plurality of predetermined different wavelengths on a recording master. A first step of forming a layer, and a second step of irradiating the photoresist film with laser light having the predetermined plurality of different wavelengths to form an exposed portion having a constant width and a depth corresponding to information to be recorded. The method includes at least a step and a third step of developing the exposed portion to form a predetermined recording pattern, and manufactures an information recording master having a recording pattern having a depth corresponding to information to be recorded. According to such an information recording master manufacturing method, an information recording master having a recording pattern having a depth corresponding to information to be recorded is manufactured. Embodiments of the present invention will be described below in detail with reference to the drawings. In the method for manufacturing a recording medium to which the present invention is applied,
A recording medium on which recording marks having a constant width and different depths are formed can be produced from a recording master produced through the steps shown in FIG. Hereinafter, the recording medium manufacturing method will be described. The recording medium to be manufactured is
CD-ROM. In step 1 shown in FIG. 1A, a plurality of photoresist films 2 are formed on a glass master 1. Note that an adhesive is applied between the glass master 1 and the photoresist film 2 in order to increase the adhesion between the glass master 1 and the photoresist film 2. The photoresist film 2 formed on the glass master 1 has a property of responding to a laser beam having a predetermined wavelength. In a step 2 shown in FIG. 1B, the glass master 1 on which the photoresist film 2 is formed is mounted on a turntable of a cutting machine, and a laser beam modulated based on information recorded from a laser beam irradiating section 6 is obtained. Light is irradiated to expose the photoresist film 2 to form an exposed portion 3. Here, the formation of the exposed portion 3 will be described with reference to FIG. As shown in FIG. 2, for example, three photoresist films 2 (a first photoresist film 2a, a second photoresist film 2b, and a third photoresist film) are formed on the glass master 1 by the process 1, as shown in FIG. It is assumed that the film 2c) has been formed. In step 2, when a predetermined region of the photoresist film 2 is irradiated with a laser beam having the first wavelength λ1 from the laser beam irradiation unit 6, the first photoresist film 2a reacts, As shown in FIG. 2A, an exposed portion 3 is formed in a predetermined region of the first photoresist film 2a irradiated with the laser beam. Further, a laser beam having the second wavelength λ2 is applied from the laser beam irradiation unit 6 to the photoresist film 2.
Is irradiated to the predetermined region, the first photoresist film 2a and the second photoresist film 2b react,
As shown in FIG. 2B, the first photoresist film 2a and the second photoresist film 2b irradiated with laser light
Exposure portion 3 is formed in a predetermined region of. Further, when a predetermined area of the photoresist film 2 is irradiated with laser light having the third wavelength λ3 from the laser light irradiating section 6, the first photoresist film 2a and the second photoresist film 2
b and the third photoresist film 2c react, and FIG.
As shown in (c), the exposed portions 3 are formed in predetermined regions of the first photoresist film 2a, the second photoresist film 2b, and the third photoresist film 2c irradiated with the laser beam. Note that the wavelengths λ1 to λ3 of the laser beam are λ1 <
It is assumed that λ2 <λ3. As described above, a plurality of layers of the photoresist film 2 formed on the glass master 1 are irradiated with the laser light whose wavelength is changed based on the information to be recorded, thereby exposing the exposed portions 3 having different depths. Can be formed. In step 3 shown in FIG. 1C, a developing solution is applied to the photoresist film 2 on which the exposed portions 3 are formed as described above, and a developing process is performed. The photoresist film 2 of the exposed portion 3 is removed by this developing process, and a resist pattern is formed on the glass master 1. Then, FIG. 1 (d)
To the step 4 shown in FIG. In step 4 shown in FIG. 1D, the glass master 1 is set in a sputtering apparatus, and a conductive film 4 of nickel or the like is formed on the surface of the resist pattern by sputtering. Then, the process proceeds to Step 5 shown in FIG. In step 5 shown in FIG. 1 (e), the glass master 1 is placed in a plating apparatus,
An electroforming layer 5 is formed on the conductive film 4 by performing nickel electroforming. Then, the process proceeds to step 6 shown in FIG. FIG.
In step 6 shown in (f), the electroformed layer 5 to which the resist pattern has been transferred from the glass master 1 is peeled off. And FIG.
Proceed to step 7 shown in (g). In step 7 shown in FIG. 1G, the photoresist film 2 adhered to the electroformed layer 5 is removed, and the electroformed layer 5 is processed into a predetermined shape. What is completed by the processing in step 7 is called a stamper. The stamper is mounted on a mold of an injection molding machine. In the injection molding machine, C is formed by molding a resin substrate such as polycarbonate on a stamper.
A D-ROM is manufactured. As described above, in the recording medium manufacturing method according to the present invention, a plurality of photoresist films 2 responsive to a predetermined wavelength are formed on the glass master 1, and information to be recorded on the formed photoresist films 2 is recorded. By irradiating a laser beam having a different wavelength based on the information, an exposure portion 3 having a different depth is formed, a developing process is performed, and an information recording master having a recording pattern having a depth corresponding to information to be recorded is manufactured. It is possible to manufacture a recording medium on which recording marks having a constant width and different depths are formed without changing the power of the laser beam. Further, the recording medium manufacturing method according to the present invention,
Reproduced signals having different reflectances can be detected from recording marks having different depths formed on the manufactured recording medium. Since a reproduced signal can be obtained, the recording density of the recording medium can be significantly improved. As described in detail above, the method of manufacturing an information recording master according to the present invention comprises a first method of forming a plurality of photoresist films responsive to a plurality of predetermined different wavelengths on a recording master. And irradiating the photoresist film with laser light having the predetermined plurality of different wavelengths to form an exposed portion having a constant width and a depth corresponding to information to be recorded.
And at least a third step of developing the exposed portion to form a predetermined recording pattern, and producing an information recording master having a recording pattern having a depth corresponding to the information to be recorded. Without changing the power of the recording medium, it is possible to manufacture a recording medium in which recording marks having a constant width and different depths are formed. Further, the information recording master manufacturing method according to the present invention can detect reproduced signals having different reflectances from recording marks having different depths formed on the manufactured recording medium, and can also detect recording signals having different depths. By irradiating the reproduction light with the changed wavelength, different optical reproduction signals can be obtained, so that the recording density of the recording medium can be greatly improved.

【図面の簡単な説明】 【図1】本発明を適用した情報記録原盤製造方法により
記録媒体を製造する工程を示した図である。 【図2】本発明を適用した情報記録原盤製造方法により
フォトレジスト膜に露光部を形成した際の記録媒体の断
面図である。 【図3】従来の情報記録原盤製造方法により記録媒体を
製造する工程を示した図である。 【符号の説明】 1 ガラス原盤、2 フォトレジスト膜、2a 第1の
フォトレジスト膜、2b 第2のフォトレジスト膜、2
c 第3のフォトレジスト膜、3 露光部、4導電膜、
5 電鋳層、6 レーザ光照射部
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a process of manufacturing a recording medium by an information recording master manufacturing method to which the present invention is applied. FIG. 2 is a cross-sectional view of a recording medium when an exposed portion is formed on a photoresist film by an information recording master manufacturing method to which the present invention is applied. FIG. 3 is a view showing a process of manufacturing a recording medium by a conventional information recording master manufacturing method. [Description of Signs] 1 glass master, 2 photoresist film, 2a first photoresist film, 2b second photoresist film, 2
c third photoresist film, 3 exposed portions, 4 conductive films,
5 Electroformed layer, 6 Laser beam irradiation part

Claims (1)

【特許請求の範囲】 【請求項1】 記録原盤上に所定の複数の異なる波長に
反応するフォトレジスト膜を複数層形成する第1の工程
と、 上記フォトレジスト膜に上記所定の複数の異なる波長を
有するレーザ光を照射し、一定幅でかつ、記録する情報
に応じた深度の露光部を形成する第2の工程と、 上記露光部を現像し、所定の記録パターンを形成する第
3の工程とを少なくとも有し、記録する情報に応じた深
度の記録パターンを有する情報記録原盤を製造すること
を特徴とする情報記録原盤製造方法。
Claims: 1. A first step of forming a plurality of photoresist films responsive to a plurality of predetermined different wavelengths on a recording master, and the plurality of predetermined wavelengths formed on the photoresist film. A second step of irradiating a laser beam having a predetermined width to form an exposed portion having a constant width and a depth corresponding to information to be recorded; and a third step of developing the exposed portion to form a predetermined recording pattern. And a method for manufacturing an information recording master having a recording pattern having a depth corresponding to information to be recorded.
JP2002097141A 2002-03-29 2002-03-29 Method for manufacturing information recording master disk Pending JP2003296975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002097141A JP2003296975A (en) 2002-03-29 2002-03-29 Method for manufacturing information recording master disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002097141A JP2003296975A (en) 2002-03-29 2002-03-29 Method for manufacturing information recording master disk

Publications (1)

Publication Number Publication Date
JP2003296975A true JP2003296975A (en) 2003-10-17

Family

ID=29387625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002097141A Pending JP2003296975A (en) 2002-03-29 2002-03-29 Method for manufacturing information recording master disk

Country Status (1)

Country Link
JP (1) JP2003296975A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008020631A1 (en) * 2006-08-18 2008-02-21 Toppan Printing Co., Ltd. Method for producing original plate, method for producing microneedle patch, microneedle patch, and exposure apparatus
JP2008046508A (en) * 2006-08-18 2008-02-28 Toppan Printing Co Ltd Exposure apparatus and method
JP2008046507A (en) * 2006-08-18 2008-02-28 Toppan Printing Co Ltd Original plate, microneedle patch, and method of manufacturing the same
CN108751125A (en) * 2018-06-07 2018-11-06 皖西学院 A method of improving photoresist glue-line and electroforming metal bed boundary binding force

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008020631A1 (en) * 2006-08-18 2008-02-21 Toppan Printing Co., Ltd. Method for producing original plate, method for producing microneedle patch, microneedle patch, and exposure apparatus
JP2008046508A (en) * 2006-08-18 2008-02-28 Toppan Printing Co Ltd Exposure apparatus and method
JP2008046507A (en) * 2006-08-18 2008-02-28 Toppan Printing Co Ltd Original plate, microneedle patch, and method of manufacturing the same
US8062835B2 (en) 2006-08-18 2011-11-22 Toppan Printing Co., Ltd. Method of manufacturing master plate, method of manufacturing microneedle patch and apparatus exposure apparatus
CN108751125A (en) * 2018-06-07 2018-11-06 皖西学院 A method of improving photoresist glue-line and electroforming metal bed boundary binding force

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