JPH0531721Y2 - - Google Patents
Info
- Publication number
- JPH0531721Y2 JPH0531721Y2 JP1987117919U JP11791987U JPH0531721Y2 JP H0531721 Y2 JPH0531721 Y2 JP H0531721Y2 JP 1987117919 U JP1987117919 U JP 1987117919U JP 11791987 U JP11791987 U JP 11791987U JP H0531721 Y2 JPH0531721 Y2 JP H0531721Y2
- Authority
- JP
- Japan
- Prior art keywords
- disk
- metal plate
- ring
- shaped member
- circumferential side
- 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
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987117919U JPH0531721Y2 (en]) | 1987-07-31 | 1987-07-31 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987117919U JPH0531721Y2 (en]) | 1987-07-31 | 1987-07-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6424572U JPS6424572U (en]) | 1989-02-09 |
JPH0531721Y2 true JPH0531721Y2 (en]) | 1993-08-16 |
Family
ID=31361804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987117919U Expired - Lifetime JPH0531721Y2 (en]) | 1987-07-31 | 1987-07-31 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0531721Y2 (en]) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2647370B2 (ja) * | 1986-11-27 | 1997-08-27 | 日立マクセル株式会社 | マグネチツククランプ用光情報記録デイスク |
JPS63217582A (ja) * | 1987-03-05 | 1988-09-09 | Nippon Telegr & Teleph Corp <Ntt> | 光デイスク用ハブ |
-
1987
- 1987-07-31 JP JP1987117919U patent/JPH0531721Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6424572U (en]) | 1989-02-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0278358B1 (en) | Disk for recording and/or reproducing apparatus having magnetic chucking device | |
US5859834A (en) | Optical disc with magnetic member in a recessed portion thereof and method for producing said optical disc | |
EP0286032B1 (en) | Disk apparatus | |
US4871404A (en) | Method for producing an optical information recording disk | |
JPH0531721Y2 (en]) | ||
US4836890A (en) | Method for producing optical information recording disk | |
JPH0516693Y2 (en]) | ||
JPH0452858Y2 (en]) | ||
US5051858A (en) | Recording disk having improved centering hub and magnetic yoke arrangement | |
JP3611981B2 (ja) | ディスクチャッキング機構 | |
JP2548235B2 (ja) | 光記録媒体 | |
JPH0216455Y2 (en]) | ||
JPH01227280A (ja) | 光ディスク | |
JPH0216454Y2 (en]) | ||
JPS63153776A (ja) | 情報デイスク | |
JPS63193391A (ja) | デイスク装置 | |
JP3021724B2 (ja) | 光ディスク | |
JPH0319098Y2 (en]) | ||
JP2959208B2 (ja) | 情報信号記録ディスク | |
JPH0548545B2 (en]) | ||
JPH01220191A (ja) | ディスク装置 | |
JPH04283432A (ja) | 記録ディスク | |
JP3198115B2 (ja) | ディスクチャッキング機構 | |
JPH056643A (ja) | 光カード | |
JPH04245058A (ja) | ディスク装着装置 |