JPS6435525U - - Google Patents
Info
- Publication number
- JPS6435525U JPS6435525U JP12814687U JP12814687U JPS6435525U JP S6435525 U JPS6435525 U JP S6435525U JP 12814687 U JP12814687 U JP 12814687U JP 12814687 U JP12814687 U JP 12814687U JP S6435525 U JPS6435525 U JP S6435525U
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- information
- substrate
- row
- recording layer
- 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
- 239000000758 substrate Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 230000005415 magnetization Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
Description
第１図は本考案の一実施例における要部を拡大
して示す断面図である。第２図は第１図の書換可
能型光デイスクを用いた情報再生装置を説明する
図である。第３図ａ，ｂ，ｃは、第２図における
出力信号をそれぞれ示す図であつて、ａは第２光
センサの出力信号、ｂは第１光センサの出力信号
、ｃは差動増幅器の出力信号をそれぞれ示してい
る。
１０：書換可能型光デイスク、１２：ガラス基
板（基板）、１４：下地層（バツフア層）、１６
：光磁気記録層、２２：ピツト列。
FIG. 1 is a sectional view showing an enlarged main part of an embodiment of the present invention. FIG. 2 is a diagram illustrating an information reproducing apparatus using the rewritable optical disc of FIG. 1. Figures 3a, b, and c are diagrams showing the output signals in Figure 2, respectively, where a is the output signal of the second photosensor, b is the output signal of the first photosensor, and c is the output signal of the differential amplifier. The output signals are shown respectively. 10: Rewritable optical disk, 12: Glass substrate (substrate), 14: Base layer (buffer layer), 16
: magneto-optical recording layer, 22: pit row.
Claims (1)
報に対応するピツト列が円周方向に連ねて形成さ
れた基板と、 該基板の一面上において磁気光学効果を有する
物質により設けられ、光の集光による局部加熱に
基づいて局部磁化されることにより情報が記録さ
れるとともに、該局部磁化に対応する情報が光学
的に読み出される光磁気記録層と、 を含むことを特徴とする書換可能型光デイスク
。 (2) 前記光磁気記録層は、前記基板の一面上に
おいて透光性のバツフア層を介して積層されてい
るものである実用新案登録請求の範囲第１項に記
載の書換可能型光デイスク。[Claims for Utility Model Registration] (1) A substrate made of a translucent material, on one side of which a row of pits corresponding to recorded information are formed in a row in the circumferential direction, and a magneto-optical effect on one side of the substrate. a magneto-optical recording layer in which information is recorded by being locally magnetized based on local heating by condensing light, and information corresponding to the local magnetization is optically read out; A rewritable optical disk characterized by: (2) The rewritable optical disk according to claim 1, wherein the magneto-optical recording layer is laminated on one surface of the substrate via a light-transmitting buffer layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12814687U JPS6435525U (en) | 1987-08-24 | 1987-08-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12814687U JPS6435525U (en) | 1987-08-24 | 1987-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6435525U true JPS6435525U (en) | 1989-03-03 |
Family
ID=31381206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12814687U Pending JPS6435525U (en) | 1987-08-24 | 1987-08-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6435525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01107352A (en) * | 1987-09-30 | 1989-04-25 | Deutsche Thomson Brandt Gmbh | Optical recording carrier and manufacture thereof |
-
1987
- 1987-08-24 JP JP12814687U patent/JPS6435525U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01107352A (en) * | 1987-09-30 | 1989-04-25 | Deutsche Thomson Brandt Gmbh | Optical recording carrier and manufacture thereof |
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