JPH0725093B2 - Resin disk manufacturing method - Google Patents

Resin disk manufacturing method

Info

Publication number
JPH0725093B2
JPH0725093B2 JP62147523A JP14752387A JPH0725093B2 JP H0725093 B2 JPH0725093 B2 JP H0725093B2 JP 62147523 A JP62147523 A JP 62147523A JP 14752387 A JP14752387 A JP 14752387A JP H0725093 B2 JPH0725093 B2 JP H0725093B2
Authority
JP
Japan
Prior art keywords
resin
disk
base
pressing
manufacturing
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 - Lifetime
Application number
JP62147523A
Other languages
Japanese (ja)
Other versions
JPS63312122A (en
Inventor
高志 外谷
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP62147523A priority Critical patent/JPH0725093B2/en
Publication of JPS63312122A publication Critical patent/JPS63312122A/en
Publication of JPH0725093B2 publication Critical patent/JPH0725093B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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。
Description: FIELD OF THE INVENTION The present invention relates to a method for producing a resin disc having a fine pattern on the surface of an optical disc, a thin disc lens or the like.

〔従来技術とその問題点〕[Prior art and its problems]

(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くと
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55−152028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) In an optical disk, a flat lens, or the like, it is necessary to transfer a fine concavo-convex pattern to at least one surface of a resin disk. A method using an injection molding machine for manufacturing such a fine resin disk and a method for manufacturing by uniformly spreading the resin on a mold have been proposed. In the latter method, for example, as shown in Japanese Patent Laid-Open No. 53-116105, resin 3 is injected onto a mold 2 held on a mold stand 1 shown in FIG. There is known a method in which the circular substrate 4 held by is pressed to uniformly spread and transfer the resin, and then the resin is cut. In addition, as shown in JP-A-55-152028,
A method has been proposed in which the resin 7 is injected from below the mold 6 held on the mold base 5 shown in the figure and pressed by the substrate 8 and the 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 a conventional manufacturing method, the resin is pressed in order to uniformly spread the resin on the upper surface of the mold. At that time, a load is applied to press the resin to cure it, and thus there is a drawback that distortion due to residual stress easily occurs and the manufactured resin disk becomes brittle. Further, when the disk is used for a Fresnel lens or an optical disk, there is a problem that the optical characteristics of the resin become non-uniform and birefringence occurs, so that the optical characteristics deteriorate.

〔発明の目的〕[Object of the Invention]

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 above problems of the conventional manufacturing method, and a resin disk such as a recording medium or an optical lens having uniform optical properties without pressing the resin at the time of curing the resin. Is a technical issue.

〔発明の構成と効果〕[Constitution and effect of the invention]

(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。
(Means for Solving the Problems) The present invention is a method for manufacturing a resin disc in which a predetermined pattern is formed on a disc, and a predetermined amount of resin is placed on a base as shown in FIG. Injecting step of injecting, pressing step of pressing resin on the base using a mold until a predetermined film thickness is obtained, and irradiating an energy beam through one of the base and the mold made of transparent members. And a curing step of curing 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
に載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。
(Operation) According to the present invention having such characteristics, after the resin is placed on the base and pressed by the molding die to have a predetermined film thickness,
The resin is cured by stopping the pressing and irradiating the resin 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。
(Effect of the Invention) Therefore, according to the present invention, since the pressure is not applied at the time of curing the resin, distortion due to the residual stress of the resin does not occur and the strength of the resin can be increased. Further, when the resin disk is an optical disk of an optical system or a disk-shaped lens, it is possible to obtain an effect that birefringence can be significantly reduced.

〔実施例の説明〕[Explanation of Examples]

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。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り、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 view showing an apparatus used for manufacturing a resin disk according to an embodiment of the present invention. In this figure, the support 11 is provided with upper and lower bases 12 and 13, respectively. A hydraulic cylinder 14 is attached to the base 12 as shown, and a movable pressing portion 15 that moves up and down is attached to the cylinder tip of the hydraulic cylinder 14.
Is provided. A molding die 16 for molding a resin disc is attached to the lower surface of the movable pressing portion 15. On the lower surface of the mold 16, an uneven pattern to be reproduced is formed in advance.
That is, when the resin disk is a resin disk such as an optical disk or a compact disk, the molding die 16 records the pattern of the unevenness which is the original, and when the resin disk is a flat type Fresnel lens or the like lens, The mold has the shape of a lens. The central portion of the base 13 facing the mold 16 is made of transparent glass 17. Clear glass 17
An energy beam irradiation device 18, for example, an ultraviolet irradiation device, is provided below.

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。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(b)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h0,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。
At the time of manufacturing the 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). As the resin to be injected here, for example, an ultraviolet curable resin that cures when irradiated with ultraviolet rays is used. When the injection is completed, as shown in FIG. 1 (b), the hydraulic cylinder 14
Is driven to press the resin 20 on the glass plate 17 with a constant pressure through the movable pressing portion 15 and the molding die 16. Where the applied pressure is
F, first the thickness h 0 of the radius r, the first disc of the resin disc, when a desired thickness h, and the pressing time t between these is made up of the following relationships.

η:樹脂の粒性係数 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h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: Graininess coefficient of resin Then, when the pressing for this time is completed, the resin disk has a predetermined film thickness h. At this stage, the pressing of the resin 20 by the hydraulic cylinder 14 via the mold 16 is stopped. Then, the energy irradiation device 18, such as an ultraviolet irradiation device, provided below the transparent glass 17 is driven. Then, as shown in FIG. 1C, ultraviolet rays are irradiated from below the resin 20 through the transparent glass 17, and the resin 20 is cured in a pressed state. Therefore, a resin having a shape corresponding to the unevenness of the molding die 16 can be obtained. Then, the molding die 16 is removed from the resin and unnecessary peripheral portions are cut to obtain a resin disc.

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。
Although an ultraviolet curable resin is used as the resin in this embodiment, it goes without saying that the same effect can be obtained by using an electron beam curable resin and irradiating the electron beam from the upper 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。
In this embodiment, a part of the base 13 is made of transparent glass 17, and ultraviolet rays are irradiated from below the base in the curing step to cure the resin, but the molding die 16 itself is formed of a transparent member. Needless to say, the resin may be cured by irradiating ultraviolet rays from above.

【図面の簡単な説明】[Brief description of drawings]

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……油圧シリンダ、15……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
FIG. 1 is a diagram showing a process for producing a resin disc according to an embodiment of the present invention, FIG. 2 is a diagram showing an apparatus for producing a resin disc according to this embodiment, and FIG. 3 is a production process for a conventional resin disc. Figure showing the device,
FIG. 4 is a sectional view showing another conventional manufacturing apparatus. 12, 13 ...... Base, 14 ...... Hydraulic cylinder, 15 ...... Pressurizing and pressing part, 16 ...... Mold, 17 ...... Transparent glass, 18 ...... Energy beam irradiation device

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】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、 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 of manufacturing a resin disk for forming a predetermined pattern on a disk, comprising: an injection step of injecting a predetermined amount of resin on a base, and the base until a predetermined film thickness is achieved. It has a pressing step of pressing the above resin using a molding die, and a curing step of irradiating an energy beam through one of a base made of a transparent member and the molding die to cure the resin. And a method for manufacturing a resin disk.
【請求項2】前記樹脂は紫外線硬化樹脂であり、前記基
台は透明ガラスであり、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 curable 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. The method for producing a resin disk according to claim 1, which is characterized in that.
JP62147523A 1987-06-12 1987-06-12 Resin disk manufacturing method Expired - Lifetime JPH0725093B2 (en)

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 JPS63312122A (en) 1988-12-20
JPH0725093B2 true 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)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03202330A (en) * 1989-10-30 1991-09-04 Sharp Corp Manufacture of micro lens
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

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
JPS63312122A (en) 1988-12-20

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