JPH01181134U - - Google Patents
Info
- Publication number
- JPH01181134U JPH01181134U JP1988078471U JP7847188U JPH01181134U JP H01181134 U JPH01181134 U JP H01181134U JP 1988078471 U JP1988078471 U JP 1988078471U JP 7847188 U JP7847188 U JP 7847188U JP H01181134 U JPH01181134 U JP H01181134U
- Authority
- JP
- Japan
- Prior art keywords
- transparent substrate
- land portion
- optical recording
- uneven pits
- recording 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988078471U JP2554514Y2 (ja) | 1988-06-14 | 1988-06-14 | 光記録媒体 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988078471U JP2554514Y2 (ja) | 1988-06-14 | 1988-06-14 | 光記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01181134U true JPH01181134U (en]) | 1989-12-27 |
JP2554514Y2 JP2554514Y2 (ja) | 1997-11-17 |
Family
ID=31303395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988078471U Expired - Lifetime JP2554514Y2 (ja) | 1988-06-14 | 1988-06-14 | 光記録媒体 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2554514Y2 (en]) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6224959B1 (en) | 1998-01-23 | 2001-05-01 | Seiko Epson Corporation | Optical disc |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS615453A (ja) * | 1984-06-19 | 1986-01-11 | Ricoh Co Ltd | 光デイスクメモリ媒体 |
-
1988
- 1988-06-14 JP JP1988078471U patent/JP2554514Y2/ja not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS615453A (ja) * | 1984-06-19 | 1986-01-11 | Ricoh Co Ltd | 光デイスクメモリ媒体 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6224959B1 (en) | 1998-01-23 | 2001-05-01 | Seiko Epson Corporation | Optical disc |
WO2004081928A1 (ja) * | 1998-01-23 | 2004-09-23 | Kimio Nagasaka | 光ディスク |
Also Published As
Publication number | Publication date |
---|---|
JP2554514Y2 (ja) | 1997-11-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5500850A (en) | Optical disk with grooves and pits of different depths | |
ATE105439T1 (de) | Loeschbares optisches datenspeichermedium mit einer eingebetteten servospur und einer unterflaechigen aufnahmeschnittstelle. | |
EP0994470A3 (en) | Optical recording medium and optical recording/reproducing apparatus | |
FI903700A0 (fi) | Optiskt informationsupptagningsmedium och upptagningsfoerfarande. | |
CA2075518A1 (en) | Optical memory | |
FI893562A0 (fi) | Foerfarande och organ foer optisk dataregistrering. | |
CA2006141A1 (en) | Optical recording element and optical data retrieval system for use with the same | |
KR900701003A (ko) | 공간 가변 에너지 흡수성을 갖는 광 데이타 기억 매체 | |
DE3685470D1 (de) | Laserinformationsaufzeichnungsmedium mit aufzeichnungsschicht. | |
JPH01181134U (en]) | ||
DE3682583D1 (de) | Optisches aufzeichnungsmedium mit stabilisierter aufzeichnungsschicht. | |
KR890012282A (ko) | 정보기록 소자 및 그 제조방법과 정보기록 방법 | |
KR880014530A (ko) | 디스크형 정보 캐리어 표시방법 | |
JPS58165794U (ja) | 光学式情報記憶媒体 | |
KR890013617A (ko) | 금속 매트릭스 제조방법 및 매트릭스 제조용 마스타 디스크 | |
JPH025120U (en]) | ||
JPH01150247A (ja) | 光ディスク基板 | |
KR860008531A (ko) | 광학식 헤드의 트랙킹 오차 검출장치 | |
JPS6273328U (en]) | ||
JPS57205836A (en) | Information recording medium | |
JPS57181442A (en) | Information storage medium | |
KR950015264A (ko) | 광디스크 | |
JPS6449134A (en) | Optical disk recording and reproducing device | |
JPS62186225U (en]) | ||
JPH0458819U (en]) |