JPH02135927U - - Google Patents
Info
- Publication number
- JPH02135927U JPH02135927U JP1989045048U JP4504889U JPH02135927U JP H02135927 U JPH02135927 U JP H02135927U JP 1989045048 U JP1989045048 U JP 1989045048U JP 4504889 U JP4504889 U JP 4504889U JP H02135927 U JPH02135927 U JP H02135927U
- Authority
- JP
- Japan
- Prior art keywords
- substrates
- circumferential spacer
- outer circumferential
- recording medium
- diameter
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
第１図は本考案の一実施例の光情報記録媒体の
構成を示す部分断面図、第２図は従来のエアーサ
ンドイツチ型情報記録媒体の構成を示す断面図で
ある。
１，１′……基板、２，２′……記録層、３…
…内周スペーサ、４……外周スペーサ、５……接
着剤層、８……接着剤はみ出し防止用溝、９……
スペーサ面とり部。
FIG. 1 is a partial sectional view showing the structure of an optical information recording medium according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the structure of a conventional air sandwich type information recording medium. 1, 1'...Substrate, 2, 2'...Recording layer, 3...
...Inner spacer, 4...Outer spacer, 5...Adhesive layer, 8...Groove for preventing adhesive extrusion, 9...
Spacer chamfer.
Claims (1)
片面に記録層を有する一対の基板を、同心的に配
置された内周スペーサ及び外周スペーサを介して
、該記録層が内側になるように接着剤により貼合
せた封止構造を有する情報記録媒体において、外
周スペーサの外径が両基板の外径よりも小さく、
かつ、内周スペーサの内径が両基板の内径よりも
大きく設定され、さらに両基板もしくは内、外周
スペーサの一部に少なくとも１つ以上の接着剤は
み出し防止溝が設けられていることを特徴とする
情報記録媒体。 A pair of substrates having a recording layer on one side of at least one of the two disc-shaped substrates is glued with an adhesive so that the recording layer is on the inside through an inner circumferential spacer and an outer circumferential spacer that are arranged concentrically. In the information recording medium having a sealed structure bonded together, the outer diameter of the outer circumferential spacer is smaller than the outer diameter of both substrates,
Further, the inner diameter of the inner circumferential spacer is set larger than the inner diameter of both substrates, and further, at least one or more adhesive extrusion prevention grooves are provided on both substrates or a part of the inner and outer circumferential spacers. Information recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989045048U JPH02135927U (en) | 1989-04-19 | 1989-04-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989045048U JPH02135927U (en) | 1989-04-19 | 1989-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02135927U true JPH02135927U (en) | 1990-11-13 |
Family
ID=31558889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989045048U Pending JPH02135927U (en) | 1989-04-19 | 1989-04-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02135927U (en) |
-
1989
- 1989-04-19 JP JP1989045048U patent/JPH02135927U/ja active Pending