JPS58135040U - optical recording disk - Google Patents
optical recording diskInfo
- Publication number
- JPS58135040U JPS58135040U JP1982031362U JP3136282U JPS58135040U JP S58135040 U JPS58135040 U JP S58135040U JP 1982031362 U JP1982031362 U JP 1982031362U JP 3136282 U JP3136282 U JP 3136282U JP S58135040 U JPS58135040 U JP S58135040U
- Authority
- JP
- Japan
- Prior art keywords
- recording area
- optical recording
- peripheral edge
- recording disk
- disk surface
- 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
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図は本考案の一実施例の平面図である。
°1・・・・・・光学式記録円盤、2・・・・・・記録
領域、3・・・・・・外周無記録領域、4・・・・・・
内周無記録領域、5゜6・・・・・・識別領域。The figure is a plan view of an embodiment of the present invention. °1...Optical recording disk, 2...Recording area, 3...Outer non-recording area, 4...
Inner circumference unrecorded area, 5°6...Identification area.
Claims (1)
領域と、盤面外周端と前記記録領域の最外周トラックと
の間に設けられた外周無記録領域と、盤面内周端と前記
記録領域の最内周トラックとの間に設けられた内周無記
録領域とで構成されている光学式記録円盤において、少
なくとも前記最外周トラックに隣接する前記外周無記録
領域の内周縁部及び少なくとも前記最内周トラックに隣
接する前記内周無記録領域の外周縁部にそれぞれ設けた
識別領域の光の反射率が、前記記録領域の光の反射率と
異なることを特徴とする光学式記録円盤。The disk surface includes a recording area where tracks on which signals are recorded are arranged, an outer non-recording area provided between the outer peripheral edge of the disk surface and the outermost track of the recording area, and an inner peripheral edge of the disk surface and the recording area. an inner peripheral non-recording area provided between the innermost track and an innermost non-recording area; An optical recording disk characterized in that the light reflectance of each identification area provided at the outer peripheral edge of the inner non-recording area adjacent to the inner track is different from the light reflectance of the recording area.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1982031362U JPS58135040U (en) | 1982-03-08 | 1982-03-08 | optical recording disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1982031362U JPS58135040U (en) | 1982-03-08 | 1982-03-08 | optical recording disk |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58135040U true JPS58135040U (en) | 1983-09-10 |
Family
ID=30043038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1982031362U Pending JPS58135040U (en) | 1982-03-08 | 1982-03-08 | optical recording disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58135040U (en) |
-
1982
- 1982-03-08 JP JP1982031362U patent/JPS58135040U/en active Pending
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