JPH0250537B2 - - Google Patents
Info
- Publication number
- JPH0250537B2 JPH0250537B2 JP58016390A JP1639083A JPH0250537B2 JP H0250537 B2 JPH0250537 B2 JP H0250537B2 JP 58016390 A JP58016390 A JP 58016390A JP 1639083 A JP1639083 A JP 1639083A JP H0250537 B2 JPH0250537 B2 JP H0250537B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing plate
- spaces
- humidity
- sides
- storage medium
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明はたとえば光デイスク、ビデオデイスク
として用いられ、記録層ないしは光反射層からな
る情報形成層に対しビーム光を照射することによ
り、少なくとも情報形成層に形成された情報の読
取りが行なえるようにした情報記憶媒体に関す
る。Detailed Description of the Invention [Technical Field of the Invention] The present invention is used, for example, as an optical disk or a video disk. The present invention relates to an information storage medium in which information formed in layers can be read.
この種の情報記憶媒体としてはたとえば第１図
に示すようなサンドイツチ構造のものが知られて
いる。すなわち、図中１は補強板で、この補強板
１の両側面部にはスペーサ２，２を介してそれぞ
れ基盤３，３が離間対向して設けられ、上記補強
板１と基盤３，３との間には空間部ａ，ａがそれ
ぞれ形成されている。上記基盤３，３の内面側に
はそれぞれ情報形成層としての光反射膜４が貼り
合されている。
As this type of information storage medium, for example, one having a Sanderch structure as shown in FIG. 1 is known. That is, in the figure, reference numeral 1 denotes a reinforcing plate, and on both side surfaces of this reinforcing plate 1, bases 3, 3 are provided facing each other with spacers 2, 2 in between. Space parts a, a are formed between them. A light reflecting film 4 as an information forming layer is bonded to the inner surfaces of the substrates 3, 3, respectively.
しかしながら、従来においては両側の基盤３，
３に対し、異なる温度あるいは湿度が加えられる
と、空気層ａ，ａ内の温度、湿度、圧力が両側で
それぞれ異なり、上、下対称構造にもかかわら
ず、第２図に示すように、基盤３，３に変形ある
いはひずみが生じてしまう不都合があつた。 However, in the past, the bases 3 on both sides,
3, when different temperatures or humidity are applied, the temperature, humidity, and pressure in the air layers a and a are different on both sides, and despite the upper and lower symmetrical structure, the base There was an inconvenience that deformation or distortion occurred in 3.3.
本発明は上記事情に着目してなされたもので、
その目的とするところは、温度、湿度あるいは圧
力の影響により基盤の形状が変化することのない
ようにした情報記憶媒体を提供しようとするもの
である。
The present invention has been made focusing on the above circumstances,
The purpose is to provide an information storage medium whose base shape does not change due to the effects of temperature, humidity, or pressure.
本発明は補強板に通孔を穿設し、この通孔を介
して補強板両側の空間部を互いに連通したもので
ある。
In the present invention, a through hole is formed in the reinforcing plate, and the spaces on both sides of the reinforcing plate are communicated with each other through the through hole.
以下、本発明の一実施例を第３図乃至第５図に
もとづいて説明する。図中１０，１０は基盤で、
これら基盤１０，１０は外径約300mm、内径約35
mm、厚さ１〜２mm程度のプラスチツク、ガラスな
どで成形され、その片面にはTe，Alなどの金属
薄膜からなる情報形成層１１が形成されている。
また、１２は補強板で、この補強板１２は内外径
を上記基盤１０，１０とほぼ同じとし、厚さを１
〜５mm程度の金属、ガラス、プラスチツク、セラ
ミツクなどにより成形されている。上記基盤１
０，１０は上記補強板１２の板面両側に内側およ
び外側の各スペーサ１３，１４を介してそれぞれ
離間対向する状態で配設されている。上記基盤１
０，１０の情報形成層１１は上記補強板１２に対
向され、両者間には空間部ａ，ａがそれぞれ形成
されている。
Hereinafter, one embodiment of the present invention will be described based on FIGS. 3 to 5. In the figure, 10 and 10 are the base,
These bases 10, 10 have an outer diameter of approximately 300 mm and an inner diameter of approximately 35 mm.
It is made of plastic, glass, etc. and has a thickness of about 1 to 2 mm, and an information forming layer 11 made of a thin metal film of Te, Al, etc. is formed on one side.
Further, 12 is a reinforcing plate, and this reinforcing plate 12 has approximately the same inner and outer diameters as the bases 10, 10, and has a thickness of 1.
It is molded from metal, glass, plastic, ceramic, etc. with a thickness of ~5 mm. Above base 1
0 and 10 are arranged on both sides of the plate surface of the reinforcing plate 12 so as to be spaced apart from each other and face each other via inner and outer spacers 13 and 14, respectively. Above base 1
The information forming layers 11 of 0 and 10 are opposed to the reinforcing plate 12, and spaces a and a are formed between them, respectively.
一方、上記補強板１２には第５図にも示すよう
に複数個の通孔１５が穿設され、これら通孔１５
…を介して上記空間部ａ，ａが互いに連通されて
いる。 On the other hand, the reinforcing plate 12 is provided with a plurality of through holes 15 as shown in FIG.
The spaces a, a are communicated with each other via...
しかして、情報記憶媒体の保存時などにおい
て、その片側だけに長時間温湿度が加わつた場合
などには補強板１２を境とする上、下部の空間部
ａ，ａ内の温度、湿度、圧力が変化し、基盤１
０，１０が変形あるいはひずもうとするが、この
ときには、上下部空間部ａ，ａ内の空気が補強板
１２の通孔１５…を介して流通する。したがつ
て、上、下部空間部ａ，ａ内の空気層の温度、湿
度、圧力は等しくなり、基盤１０，１０が変形し
たりたわむことは確実に防止されることになる。 Therefore, when temperature and humidity are applied to only one side of the information storage medium for a long period of time, such as when storing the information storage medium, the temperature, humidity, and pressure within the spaces a and a below the reinforcing plate 12 will be affected. changes, base 1
0 and 10 try to deform or strain, but at this time, air in the upper and lower spaces a, a flows through the through holes 15 of the reinforcing plate 12. Therefore, the temperature, humidity, and pressure of the air layers in the upper and lower spaces a, a are equalized, and deformation or bending of the bases 10, 10 is reliably prevented.
なお、上記一実施例においては、外側のスペー
サ１４を固定式のものとしたが、これに限られる
ことなく、第６図に示すように外側のスペーサ２
１が可変式のものであつてもよい。この可変式の
ものは上下空間部ａ，ａのバランスをいつそう必
要とするため、補強板１２に通孔１５を設けるこ
とは特に有効である。 In the above embodiment, the outer spacer 14 is of a fixed type, but the outer spacer 2 is not limited to this, as shown in FIG.
1 may be variable. Since this variable type requires a good balance between the upper and lower spaces a, a, it is particularly effective to provide the through holes 15 in the reinforcing plate 12.
本発明は以上説明したように補強板に通孔を設
け、この通孔により、補強板と基盤との間にそれ
ぞれ形成された空間部を互いに連通させるように
したから、空間部間において空気が流通し、片側
の基盤だけに長時間、温湿度が加えられても両側
にある空間部内の空気層の温度、湿度、圧力が等
しくなり、従来のように基盤が変形したりひずみ
を生じるといつた虞れがない。また、補強板に通
孔を設けて両空間を連通させるから、構造的に簡
略化するとともに、情報形成層の面積を低下させ
ることもないという効果を奏する。
As explained above, the present invention provides a through hole in the reinforcing plate and allows the spaces formed between the reinforcing plate and the base to communicate with each other, so that air can be kept between the spaces. Even if temperature and humidity are applied to only one side of the board for a long period of time during circulation, the temperature, humidity, and pressure of the air layer in the space on both sides become equal, and when the board deforms or strains as in the past. There is no doubt. Further, since the reinforcing plate is provided with a through hole to communicate the two spaces, the structure is simplified and the area of the information forming layer is not reduced.
第１図は従来例を示す側断面図、第２図はその
変形時の状態を示す側断面図、第３図乃至第５図
は本発明の一実施例を示すもので、第３図は情報
記憶媒体を示す平面図、第４図はその側断面図、
第５図は補強板を示す平面図、第６図は本発明の
他の実施例を示す側断面図である。
１２…補強板、１０，１０…基盤、１５…通
孔。
Fig. 1 is a side sectional view showing a conventional example, Fig. 2 is a side sectional view showing its deformed state, Figs. 3 to 5 show an embodiment of the present invention, and Fig. 3 is a side sectional view showing a conventional example. A plan view showing the information storage medium, FIG. 4 is a side sectional view thereof,
FIG. 5 is a plan view showing the reinforcing plate, and FIG. 6 is a side sectional view showing another embodiment of the present invention. 12... Reinforcement plate, 10, 10... Base, 15... Through hole.
Claims (1)
情報形成層を有した側の面を離間対向して設けら
れ上記補強板の両板面間にそれぞれ空間部を形成
する一対の基盤と、上記補強板に設けられ上記両
空間部を互いに連通させる通孔とを具備したこと
を特徴とする情報記憶媒体。1. A reinforcing plate, and a pair of bases, which are provided on both sides of the reinforcing plate so that the sides having the information forming layer are facing each other and are spaced apart from each other, each forming a space between the two plate surfaces of the reinforcing plate; An information storage medium characterized by comprising a through hole provided in the reinforcing plate and allowing the two spaces to communicate with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58016390A JPS59151345A (en) | 1983-02-03 | 1983-02-03 | Information storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58016390A JPS59151345A (en) | 1983-02-03 | 1983-02-03 | Information storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59151345A JPS59151345A (en) | 1984-08-29 |
| JPH0250537B2 true JPH0250537B2 (en) | 1990-11-02 |
Family
ID=11914920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58016390A Granted JPS59151345A (en) | 1983-02-03 | 1983-02-03 | Information storage medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59151345A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519847Y2 (en) * | 1985-08-21 | 1993-05-25 | ||
| JPH02156436A (en) * | 1988-12-07 | 1990-06-15 | Nec Corp | Optical disk |
| DE102006015425A1 (en) * | 2006-03-31 | 2007-10-04 | Sonopress Gmbh | Multilevel body e.g. optical data medium, making method, involves forming layer from humidity-absorption plastic, and covering layer directly or indirectly with metal layer for placing bridges into metal layer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5496002A (en) * | 1978-01-13 | 1979-07-30 | Hitachi Ltd | Information recording plate |
| JPS5511613U (en) * | 1978-06-30 | 1980-01-25 |
-
1983
- 1983-02-03 JP JP58016390A patent/JPS59151345A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59151345A (en) | 1984-08-29 |
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