JPS63312122A - Manufacture of resin disc - Google Patents
Manufacture of resin discInfo
- Publication number
- JPS63312122A JPS63312122A JP14752387A JP14752387A JPS63312122A JP S63312122 A JPS63312122 A JP S63312122A JP 14752387 A JP14752387 A JP 14752387A JP 14752387 A JP14752387 A JP 14752387A JP S63312122 A JPS63312122 A JP S63312122A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- disk
- curing
- mold
- base
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 70
- 229920005989 resin Polymers 0.000 title claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 11
- 230000001678 irradiating effect Effects 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の分野〕
本発明は光ディスクや薄い円板状レンズ等の面上に微細
なパターンを有する樹脂円板の製造方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a method for manufacturing a resin disk having a fine pattern on the surface of an optical disk, a thin disk-shaped lens, or the like.
（従来技術とその問題点〕
（従来技術）
光ディスクや平板状のレンズ等では樹脂円板の少な（と
も一方の面に微細な凹凸パターンを転写する必要がある
。このような微細な樹脂円板等を製造するために射出成
形機を用いた方法と、金型上に樹脂を均一に広げて製造
する方法が提案されている。後者の方法は例えば特開昭
５３−１１６１０５号に示されているように、第３図に
示す金型台１に保持されている金型２上に樹脂３を注入
し、上部より湾曲するように保持された円形の基板４を
押圧して樹脂を均一に広げて転写し切断する方法が知ら
れている。又特開昭５５−１５２０２．８号に示されて
いるように、第４図に示す金型台５上に保持されている
金型６の下方より樹脂７を注入して基板８及び押さえ板
９で押圧して樹脂円板を形成する方法が提案されている
。(Prior art and its problems) (Prior art) Optical discs, flat lenses, etc. have a small number of resin discs (both require a fine uneven pattern to be transferred to one side. A method using an injection molding machine and a method of manufacturing by uniformly spreading resin on a mold have been proposed. As shown in Fig. 3, resin 3 is injected onto the mold 2 held on the mold stand 1 shown in Fig. 3, and a circular substrate 4 held in a curved manner is pressed from above to uniformly inject the resin. A method of spreading, transferring, and cutting is known.Also, as shown in Japanese Patent Application Laid-Open No. 55-15202.8, a mold 6 held on a mold stand 5 shown in FIG. A method has been proposed in which resin 7 is injected from below and pressed by a substrate 8 and a pressing plate 9 to form a resin disk.
（発明が解決しようとする問題点）
しかしながらこのような従来の製造方法では、樹脂を金
型の上面に均一に展開するために樹脂を押圧するように
していた。そのとき荷重をかけて樹脂を押圧して硬化さ
せるため、残留応力による歪みが生じ易く製造された樹
脂円板が脆くなるという欠点があった。又円板をフレネ
ルレンズや光ディスクに用いる場合には、樹脂の光学的
な特性が不均一となり複屈折が生じる等、光学的特性が
劣化するという問題点もあった。(Problems to be Solved by the Invention) However, in such conventional manufacturing methods, the resin is pressed in order to spread the resin uniformly on the upper surface of the mold. At that time, since the resin is pressed and hardened by applying a load, there is a drawback that distortion due to residual stress tends to occur and the manufactured resin disk becomes brittle. Furthermore, when the disk is used in a Fresnel lens or an optical disk, there is a problem in that the optical properties of the resin are non-uniform, resulting in birefringence and other deterioration of the optical properties.
本発明はこのような従来の製造方法の問題点に鑑みてな
されたものであって、樹脂の硬化時には樹脂を押圧する
ことなく均一な光学的性質を有する記録媒体や光レンズ
等の樹脂円板を製造することを技術的課題とする。The present invention has been made in view of the problems of the conventional manufacturing method, and is capable of producing resin discs for recording media, optical lenses, etc. that have uniform optical properties without pressing the resin during curing. The technical challenge is to manufacture.
〔発明の構成と効果〕
（問題点を解決するための手段）
本発明は円板上に所定のパターンを形成する樹脂円板の
製造方法であって、第１図に示すように、基台上に所定
量の樹脂を注入する注入工程と、所定の膜厚となるまで
基台上の樹脂を成形型を用いて押圧する押圧工程と、透
明部材で構成された基台及び成形型の一方を介してエネ
ルギービームを照射し樹脂を硬化させる硬化工程と、を
有することを特徴とするものである。[Configuration and Effects of the Invention] (Means for Solving the Problems) The present invention provides a method for manufacturing a resin disk in which a predetermined pattern is formed on the disk, and as shown in FIG. An injection process in which a predetermined amount of resin is injected onto the base, a pressing process in which the resin on the base is pressed using a mold until a predetermined film thickness is achieved, and one of the base and the mold made of a transparent member. This method is characterized by having a curing step of curing the resin by irradiating an energy beam through the resin.
（作用）
このような特徴を有する本発明によれば、樹脂を基台上
にＳ！置して成形型によって押圧し所定の膜厚にした後
、押圧を停止して樹脂にエネルギービームを照射するこ
とによって硬化させるようにしている。(Function) According to the present invention having such characteristics, the resin is placed on the base! After placing the resin and pressing it with a mold to obtain a predetermined film thickness, the pressing is stopped and the resin is cured by irradiating it with an energy beam.
（発明の効果）
そのため本発明によれば、樹脂の硬化時には圧力が加え
られないので樹脂の残留応力による歪みが生じることが
なく、樹脂の強度を強めることができるという効果が得
られる。又樹脂円板を光学系の光ディスクや円板状レン
ズとする場合には、複屈折を著しく減少させることがで
きるという効果が得られる。(Effects of the Invention) Therefore, according to the present invention, since no pressure is applied during curing of the resin, distortion due to residual stress in the resin does not occur, and the strength of the resin can be increased. Furthermore, when the resin disk is used as an optical disk or a disk-shaped lens in an optical system, the effect of significantly reducing birefringence can be obtained.
第２図は本発明の一実施例による樹脂円板の製造に用い
られる装置を示す概略図である０本図において支柱１１
には上下に基台１２．１３が夫々設けられる。基台１２
には図示のように油圧シリンダ１４が取付けられており
、油圧シリンダ１４のシリンダ先端には上下に移動する
可動押圧部１５が設けられる。又可動押圧部１５の下面
には樹脂円板を成形する成形型１６が取付けられる。成
形型１６の下面には複製すべき凹凸のパターンがあらか
じめ形成されている。即ちこの樹脂円板を光ディスクや
コンパクトディスク等の樹脂円板とすると成形型１６は
その元となる凹凸のパターンを記録したものであ、す、
樹脂円板を平板型のフレネルレンズ等のレンズとする°
とそのレンズの形状を有する型とする。そしてこの成形
型１６に対向する基台１３の中央部は透明ガラス１７に
より構成されている。透明ガラス１７の下方にはエネル
ギービーム照射装置１８、例えば紫外線照射装置が設け
られている。FIG. 2 is a schematic diagram showing an apparatus used for manufacturing a resin disk according to an embodiment of the present invention.
Bases 12 and 13 are provided at the top and bottom, respectively. Base 12
As shown in the figure, a hydraulic cylinder 14 is attached to the hydraulic cylinder 14, and a movable pressing portion 15 that moves up and down is provided at the cylinder tip of the hydraulic cylinder 14. Further, a mold 16 for molding a resin disk is attached to the lower surface of the movable pressing portion 15. A concavo-convex pattern to be replicated is previously formed on the lower surface of the mold 16. That is, if this resin disk is used as a resin disk for an optical disk, a compact disk, etc., the mold 16 records the original uneven pattern.
Using a resin disc as a lens such as a flat Fresnel lens
and a mold having the shape of the lens. The center portion of the base 13 facing the mold 16 is made of transparent glass 17. An energy beam irradiation device 18, for example, an ultraviolet irradiation device, is provided below the transparent glass 17.
さて樹脂円板の製造時には第１図（ａ）に示すように透
明ガラス板１７の上面に一定量の樹脂２０を注入する。Now, when manufacturing a resin disk, a certain amount of resin 20 is injected onto the upper surface of the transparent glass plate 17, as shown in FIG. 1(a).
ここで注入する樹脂としては、例えば紫外線を照射した
ときに硬化する紫外線硬化樹脂を用いるものとする。そ
の注入を終えると第１図（ｂｌに示すように油圧シリン
ダ１４を駆動して可動押圧部１５．成形型１６を介して
樹脂２０を一定の圧力でガラス板１７上に押圧する。こ
こで印加圧力をＦ、樹脂円板の半径をｒ、最初の円板の
最初の厚さをり、、所望の厚さをｈとすると、押圧時間
ｔとこれらの間には以下の関係が成り立っている。The resin to be injected here is, for example, an ultraviolet curing resin that hardens when irradiated with ultraviolet light. When the injection is completed, the hydraulic cylinder 14 is driven as shown in FIG. Assuming that the pressure is F, the radius of the resin disk is r, the initial thickness of the first disk is , and the desired thickness is h, the following relationship holds between the pressing time t and these.
η：樹脂の粗性係数
そしてこの時間の押圧を完了すると樹脂円板は所定の膜
厚りとなっている。この段階で油圧シリンダ１４による
成形型１６を介しての樹脂２０の押圧を停止する。そし
て透明ガラス１７の下方に設けられたエネルギー照射装
置１８、例えば紫外線照射装置を駆動する。そうすれば
第１図（Ｃ）に示すように透明ガラス１７を介して樹脂
２０の下方より紫外線が照射され、樹脂２０が押圧され
た状態で硬化する。従って成形型１６の凹凸に対応した
形状の樹脂とすることができる。そして樹脂より成形型
１６を取り去り周囲の不要部分を切断して樹脂円板を得
る。η: Roughness coefficient of the resin. When the pressing for this time is completed, the resin disk has a predetermined film thickness. At this stage, the pressing of the resin 20 through the mold 16 by the hydraulic cylinder 14 is stopped. Then, an energy irradiation device 18 provided below the transparent glass 17, for example, an ultraviolet irradiation device, is driven. Then, as shown in FIG. 1(C), ultraviolet rays are irradiated from below the resin 20 through the transparent glass 17, and the resin 20 is cured while being pressed. Therefore, the resin can be shaped to correspond to the irregularities of the mold 16. Then, the mold 16 is removed from the resin and unnecessary parts around it are cut off to obtain a resin disk.
尚本実施例では樹脂として紫外線硬化樹脂を用いている
が、電子ビームで硬化する樹脂を用い、基板の上面より
電子ビームを照射しても同様の効果が得られることはい
うまでもない。In this embodiment, an ultraviolet curable resin is used as the resin, but it goes without saying that the same effect can be obtained by using a resin that is cured by an electron beam and irradiating the electron beam from the top surface of the substrate.
又本実施例は基台１３の一部を透明ガラス１７とし、硬
化工程では基台の下方より紫外線を照射して樹脂を硬化
させるようにしているが、成形型１６自体を透明部材で
形成し、その上部より紫外線を照射して樹脂を硬化させ
るようにしてもよいことはいうまでもない。Further, in this embodiment, a part of the base 13 is made of transparent glass 17, and in the curing process, ultraviolet rays are irradiated from below the base to harden the resin, but the mold 16 itself is made of a transparent material. It goes without saying that the resin may be cured by irradiating ultraviolet rays from above.
第１図は本発明の一実施例による樹脂円板の製造過程を
示す図、第２図は本実施例による樹脂円板の製造装置を
示す図、第３図は従来の樹脂円板の製造装置を示す図、
第４図は従来の他の製造装置を示す断面図である。
１２．１３−・−・基台 １４−・−−−ｍ−油圧シ
リンダ１５−−−−−−一加圧押圧部 １６・−・・
−・−成形型 １７＝・−・−・透明ガラス １８
−・−エネルギービーム照射装置
特許出願人 立石電機株式会社
代理人 弁理士 岡本宜喜（他１名）
第１図
第２図
１２．１３−−−−−・龜詮
１６・−一−−−−へ形！
１７・−−−−−一透哨力゛ラス
１８・−・−−・−ニキルζ°−ビーム７、ａ、ｖｒ良
置FIG. 1 is a diagram showing a manufacturing process of a resin disk according to an embodiment of the present invention, FIG. 2 is a diagram showing a resin disk manufacturing apparatus according to the present embodiment, and FIG. 3 is a diagram showing a conventional manufacturing process of a resin disk. A diagram showing the device;
FIG. 4 is a sectional view showing another conventional manufacturing apparatus. 12.13--・Base 14-----m-Hydraulic cylinder 15-----One pressure pressing part 16...
−・−Molding mold 17=・−・−・Transparent glass 18
-・-Energy beam irradiation device patent applicant Tateishi Electric Co., Ltd. agent Patent attorney Yoshiki Okamoto (and 1 other person) Figure 1 Figure 2 12.13-- -Here shape! 17・-----One-passing force las 18・-----・-Nikil ζ°-Beam 7, a, vr yoshiki
Claims (2)
造方法であって、 基台上に所定量の樹脂を注入する注入工程と、所定の膜
厚となるまで前記基台上の樹脂を成形型を用いて押圧す
る押圧工程と、 透明部材で構成された基台及び成形型の一方を介してエ
ネルギービームを照射し前記樹脂を硬化させる硬化工程
と、を有することを特徴とする樹脂円板の製造方法。(1) A method for manufacturing a resin disk in which a predetermined pattern is formed on the disk, which includes an injection step of injecting a predetermined amount of resin onto a base, and a step of injecting a resin onto the base until a predetermined film thickness is reached. It is characterized by comprising a pressing step of pressing the resin using a mold, and a curing step of curing the resin by irradiating an energy beam through one of the mold and a base made of a transparent member. Method for manufacturing a resin disc.
明ガラスであり、前記硬化工程は透明の基台を介して紫
外光を照射することによって樹脂を硬化させる工程であ
ることを特徴とする特許請求の範囲第１項記載の樹脂円
板の製造方法。(2) The resin is an ultraviolet curing resin, the base is transparent glass, and the curing step is a step of curing the resin by irradiating ultraviolet light through the transparent base. A method for manufacturing a resin disk according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62147523A JPH0725093B2 (en) | 1987-06-12 | 1987-06-12 | Resin disk manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62147523A JPH0725093B2 (en) | 1987-06-12 | 1987-06-12 | Resin disk manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63312122A true JPS63312122A (en) | 1988-12-20 |
| JPH0725093B2 JPH0725093B2 (en) | 1995-03-22 |
Family
ID=15432242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62147523A Expired - Lifetime JPH0725093B2 (en) | 1987-06-12 | 1987-06-12 | Resin disk manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0725093B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03202330A (en) * | 1989-10-30 | 1991-09-04 | Sharp Corp | Manufacture of micro lens |
| JP2008023868A (en) * | 2006-07-21 | 2008-02-07 | Hitachi High-Technologies Corp | Transfer method and transfer apparatus for energy ray-hardening resin, and disk or semiconductor device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5836417A (en) * | 1981-08-27 | 1983-03-03 | Matsushita Electric Ind Co Ltd | Manufacture of information carrier |
| JPS5842435A (en) * | 1981-09-04 | 1983-03-11 | Matsushita Electric Ind Co Ltd | Manufacture of signal record carrier |
| JPS61175946A (en) * | 1985-01-29 | 1986-08-07 | Victor Co Of Japan Ltd | Production of information recording medium |
-
1987
- 1987-06-12 JP JP62147523A patent/JPH0725093B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5836417A (en) * | 1981-08-27 | 1983-03-03 | Matsushita Electric Ind Co Ltd | Manufacture of information carrier |
| JPS5842435A (en) * | 1981-09-04 | 1983-03-11 | Matsushita Electric Ind Co Ltd | Manufacture of signal record carrier |
| JPS61175946A (en) * | 1985-01-29 | 1986-08-07 | Victor Co Of Japan Ltd | Production of information recording medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03202330A (en) * | 1989-10-30 | 1991-09-04 | Sharp Corp | Manufacture of micro lens |
| JP2008023868A (en) * | 2006-07-21 | 2008-02-07 | Hitachi High-Technologies Corp | Transfer method and transfer apparatus for energy ray-hardening resin, and disk or semiconductor device |
| JP4506987B2 (en) * | 2006-07-21 | 2010-07-21 | 株式会社日立ハイテクノロジーズ | Energy ray curable resin transfer method, transfer apparatus, and disk or semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0725093B2 (en) | 1995-03-22 |
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