JPS58135040U - optical recording disk - Google Patents

optical recording disk

Info

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
Application number
JP1982031362U
Other languages
Japanese (ja)
Inventor
稲富　正一
Original Assignee
松下電器産業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 松下電器産業株式会社 filed Critical 松下電器産業株式会社
Priority to JP1982031362U priority Critical patent/JPS58135040U/en
Publication of JPS58135040U publication Critical patent/JPS58135040U/en
Pending legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 盤面が、信号を記録したトラックが配設されている記録
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.
JP1982031362U 1982-03-08 1982-03-08 optical recording disk Pending JPS58135040U (en)

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)

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