JP2544356B2 - Light disk - Google Patents
Light diskInfo
- Publication number
- JP2544356B2 JP2544356B2 JP61223565A JP22356586A JP2544356B2 JP 2544356 B2 JP2544356 B2 JP 2544356B2 JP 61223565 A JP61223565 A JP 61223565A JP 22356586 A JP22356586 A JP 22356586A JP 2544356 B2 JP2544356 B2 JP 2544356B2
- Authority
- JP
- Japan
- Prior art keywords
- hub
- adhered
- substrate
- optical disc
- transmissive substrate
- 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 - Fee Related
Links
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は光デイスクに係り、特に光デイスク装置への
光デイスクの着脱の際に、破損などのない信頼性の高い
密着型光デイスクに関するものである。Description: TECHNICAL FIELD The present invention relates to an optical disk, and more particularly to a highly reliable contact type optical disk that is not damaged when the optical disk is attached to or detached from an optical disk device. Is.
従来の光デイスク、特に“ハブ”付きデイスク断面構
造は第２図に示すものとなつていた。The conventional optical disk, especially the disk cross-section structure with "hub" is as shown in FIG.
ハブ２−３にはスペーサ２−４があり、この部分に光
デイスク単板２−１が記録膜面が向き合う様に装着さ
れ、外周部分にはスペーサ２−２が接着されたものとな
つていた。この種の光デイスクに関するものとしては特
願昭57−26041号等が挙げられる。光デイスク単板を密
着構造とするには、スペーサ２−２及び２−４を取り払
つて組み立てていた。あるいは、ハブをなくして、光デ
イスクを記録膜を合わせる様に２枚接着するものとなつ
ていた。The hub 2-3 has a spacer 2-4, and the optical disk single plate 2-1 is attached to this portion so that the recording film surfaces face each other, and the spacer 2-2 is adhered to the outer peripheral portion. It was Japanese Patent Application No. 57-26041 and the like can be cited as examples of this kind of optical disk. The spacers 2-2 and 2-4 were removed and assembled in order to form the optical disc single plate into a close contact structure. Alternatively, the hub is eliminated and two optical disks are adhered so that the recording films are aligned with each other.
上記従来技術は、ハブと光デイスク単板との接着面積
が小さく、そのためこの部分が弱く、ハブと単板が離れ
てしまう問題があつた。The above-mentioned conventional technique has a problem in that the adhesion area between the hub and the optical disk veneer is small, so that this portion is weak and the hub and veneer are separated from each other.
本発明の目的は上述した従来の光デイスクの問題を解
消し、ハブと単板が離れない構造とすることにある。An object of the present invention is to solve the problems of the conventional optical disk described above and to provide a structure in which the hub and the single plate are not separated.
上記目的は、ハブに段差を設け、この段差部分により
単板の内側及び表面とハブを接着させる様にし、接着面
積を広くとることにより、達成される。The above-mentioned object is achieved by providing a step on the hub and by adhering the inside and the surface of the single plate to the hub by the step portion, and widening the adhesion area.
光デイスク内周に付けたハブは金属製であり、しか
も、スペーサ部分がないため、２枚の光デイスク単体を
密着貼り合わせすることができる。Since the hub attached to the inner circumference of the optical disc is made of metal and has no spacer portion, two optical discs can be adhered and adhered to each other.
以下、本発明の一実施例を第１図により説明する。表
面に凹凸パターンを有する光デイスク単板２−１の内周
部分に、ハブ１−１が接着されており、これを２枚、そ
れぞれの信号面を合わせる様に接着剤１−２で密着貼り
合わせたものを光デイスク１に仕上げている。なお、光
デイスク単板としては、表面に凹凸パターンを有する光
透過性基板上に、光によつて物性（例えば反射率）が変
化する記録膜を設けたもの、あるいは、ガラス基板上
に、凹凸パターンを有する光硬化性樹脂を設け、その上
に記録膜を設けたものなど、種々のものが使用できる。
これら光透過性基板は、デイスク原盤からレプリカによ
つて大量複製される。ここで、ハブ１−１は断面がクラ
ンク状となる段差を有しており、第３図にその下半分の
拡大図を示す。ハブの段差３−１はその外周部分の厚さ
３−３とほぼ等しく、他の段差３−２は光デイスク単板
の厚さ３−４と等しいかあるいはそれより厚くしても、
接差剤層１−２の半分の厚さ分としてある。なお、ハブ
の内周部分３−５のところは光デイスク装置に取り付け
る際クランパーの当たる部分であり、光デイスク単板の
面と一致させてある。An embodiment of the present invention will be described below with reference to FIG. The hub 1-1 is adhered to the inner peripheral portion of the optical disk single plate 2-1 having the concavo-convex pattern on the surface, and the two hubs are adhered to each other with the adhesive 1-2 so that their signal surfaces are aligned. The combination is finished into a light disk 1. As the optical disc single plate, a light-transmitting substrate having a concave-convex pattern on its surface, provided with a recording film whose physical properties (for example, reflectance) change depending on light, or a concave-convex pattern on a glass substrate. Various materials such as a resin having a pattern and a recording film provided thereon may be used.
These light transmissive substrates are mass-replicated from a disk master by a replica. Here, the hub 1-1 has a step having a crank-shaped cross section, and FIG. 3 shows an enlarged view of the lower half thereof. The step 3-1 of the hub is almost equal to the thickness 3-3 of the outer peripheral portion thereof, and the other steps 3-2 are equal to or thicker than the thickness 3-4 of the optical disk single plate.
The thickness is half the thickness of the adhesive layer 1-2. Incidentally, the inner peripheral portion 3-5 of the hub is a portion which the clamper abuts when it is attached to the optical disc device, and is aligned with the surface of the optical disc single plate.
第４図は本発明の第２の実施例を示す断面図である。
ハブ４−１に段差を設け、この部分に光デイスク単体２
−１を接着し、これを２枚貼り合わせたものである。こ
の時、それぞれの信号面は前の実施例と同様向き合つた
ものとしてある。なお、クランプはハブ４−１の部分を
押さえるものとする。FIG. 4 is a sectional view showing a second embodiment of the present invention.
A step is provided on the hub 4-1 and an optical disk unit 2 is provided on this step.
-1 is adhered and two of these are stuck together. At this time, the respective signal surfaces face each other as in the previous embodiment. Note that the clamp holds down the hub 4-1.
本発明によれば、ハブ付きの光デイスクを密着貼り合
わせすることができる。しかも、内径部分は金属製であ
る為、デイスクの着脱による欠損がなく、さらに、その
内径を高精度に仕上げることができる。また、クランプ
部分も金属であることから、ネジによる締めつけ、マグ
ネツト吸着などの各種の固定方法が採用できる。また特
に、第１の実施例で説明したものは、単板面と、クラン
プ面が同一平面にあることから、従来例であげたデイス
クと同じ装置での使用が可能な構造である。According to the present invention, an optical disk with a hub can be adhered and bonded. Moreover, since the inner diameter portion is made of metal, there is no loss due to the attachment / detachment of the disk, and the inner diameter can be finished with high precision. Further, since the clamp portion is also made of metal, various fixing methods such as tightening with screws and magnet adsorption can be adopted. Further, in particular, the structure described in the first embodiment is a structure that can be used in the same device as the disk described in the conventional example because the single plate surface and the clamp surface are on the same plane.
第１図は本発明の第１の実施例の断面図、第２図は従来
例の断面図、第３図は本発明の第１の実施例のハブ部分
の拡大図、第４図は本発明の第２の実施例の断面図。 １−1,4−1,5−１……ハブ、２−１……光デイスク単
板、３−1,3−２……ハブの段差部分。FIG. 1 is a sectional view of the first embodiment of the present invention, FIG. 2 is a sectional view of a conventional example, FIG. 3 is an enlarged view of a hub portion of the first embodiment of the present invention, and FIG. Sectional drawing of the 2nd Example of invention. 1-1,4-1-1,5-1 ... Hub, 2-1 ... Optical disk single plate, 3-1, 3-2 ... Step portion of hub.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 太田 憲雄 国分寺市東恋ヶ窪１丁目280番地 株式 会社日立製作所中央研究所内 (72)発明者 金子 克弘 国分寺市東恋ヶ窪１丁目280番地 株式 会社日立製作所中央研究所内 (72)発明者 藤本 信行 小田原市国府津2880番地 株式会社日立 製作所小田原工場内 (72)発明者 松島 精一 茨木市丑寅１丁目１番88号 日立マクセ ル株式会社内 (56)参考文献 特開 昭61−85644（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norio Ota 1-280 Higashi Koigakubo, Kokubunji City, Central Research Laboratory, Hitachi, Ltd. (72) Inventor Katsuhiro Kaneko 1-280 Higashi Koigakubo, Kokubunji City, Central Research Laboratory, Hitachi Ltd. ( 72) Inventor Nobuyuki Fujimoto 2880 Kozu, Odawara City Odawara Plant, Hitachi Ltd. (72) Seiichi Matsushima 1-88, Tora, Ibaraki Hitachi Maxell Co., Ltd. (56) Reference JP 61 -85644 (JP, A)
Claims (6)
枚貼りあわせる密着構造光ディスクにおいて、上記基板
の内周部分に穴の開いたハブを有し、該ハブは上記基板
に接触ないしは対向する段差を有することを特徴とする
光ディスク。1. A disk-shaped light transmissive substrate having no steps on the surface thereof is provided.
An optical disc having a close contact structure in which a plurality of substrates are adhered to each other, wherein a hub having a hole is formed in an inner peripheral portion of the substrate, and the hub has a step contacting or facing the substrate.
する記録膜を付着し、該記録膜が付着した面が向き合う
様に貼りあわせた特許請求の範囲第１項記載の光ディス
ク。2. The optical disk according to claim 1, wherein a recording film whose physical properties are changed by light is attached to the light transmissive substrate, and the recording films are attached so that the surfaces on which the recording film is attached face each other.
形成された凹凸パターンを有する光硬化性樹脂からなる
ことを特徴とする特許請求の範囲第１項または２項記載
の光ディスク。3. The optical disk according to claim 1, wherein the light transmissive substrate is made of a base and a photocurable resin having an uneven pattern formed on the base. .
よび上記光透過性基板の貼り合わされる面とは反対側の
表面に接着されていることを特徴とする特許請求の範囲
第１項ないし第３項のうちいずれかに記載の光ディス
ク。4. The step of the hub is adhered to the inner peripheral surface of the substrate and the surface of the light transmissive substrate opposite to the surface to be bonded. The optical disc according to any one of items 1 to 3.
にほぼ等しく、該段差を有する２つのハブ半体が段差同
志が向き合うように接着されてハブを形成することを特
徴とする特許請求の範囲第１項ないし第４項のうちいず
れかに記載の光ディスク。5. The height of the step is approximately equal to the thickness of the light-transmissive substrate, and two hub halves having the step are adhered so that the steps face each other to form a hub. An optical disc according to any one of claims 1 to 4.
特許請求の範囲第１項ないし第５項のうちいずれかに記
載の光ディスク。6. The optical disc according to claim 1, wherein the hub is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61223565A JP2544356B2 (en) | 1986-09-24 | 1986-09-24 | Light disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61223565A JP2544356B2 (en) | 1986-09-24 | 1986-09-24 | Light disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6379243A JPS6379243A (en) | 1988-04-09 |
| JP2544356B2 true JP2544356B2 (en) | 1996-10-16 |
Family
ID=16800151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61223565A Expired - Fee Related JP2544356B2 (en) | 1986-09-24 | 1986-09-24 | Light disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2544356B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6185644A (en) * | 1984-10-02 | 1986-05-01 | Konishiroku Photo Ind Co Ltd | Recording medium of optical information |
-
1986
- 1986-09-24 JP JP61223565A patent/JP2544356B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6379243A (en) | 1988-04-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |