JPS58193362U - Disc-shaped information recording medium - Google Patents

Disc-shaped information recording medium

Info

Publication number
JPS58193362U
JPS58193362U JP1982091295U JP9129582U JPS58193362U JP S58193362 U JPS58193362 U JP S58193362U JP 1982091295 U JP1982091295 U JP 1982091295U JP 9129582 U JP9129582 U JP 9129582U JP S58193362 U JPS58193362 U JP S58193362U
Authority
JP
Japan
Prior art keywords
recording medium
information recording
shaped information
disc
center hole
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
JP1982091295U
Other languages
Japanese (ja)
Inventor
西井　完治
益生 丸山
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 JP1982091295U priority Critical patent/JPS58193362U/en
Publication of JPS58193362U publication Critical patent/JPS58193362U/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) [Summary] 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 drawings]

第１図は従来のディスクの要部断面図、第２図は本考案
の一実施例のディスクの平面図、第３図は同ディスクの
断面図、第４図は一部を断面した光学式情報記録再生装
置の正面図、第５図および第６図は光学式情報記録再生
装置に本考案のディスクを装置した断面図で、第５図は
反射ラベルを設けた面を、第６図はその裏面をそれぞれ
ターンテーブルに接するように装着した場合を示す。 １１・・・円盤状情報記録媒体（ディスク）、１２・・
・記録媒体、１３・・・保護層、１４・・・中心孔、１
５・・・反射ラベル、１６・・・凹部、１７・・・モー
タ、１８・・・回転軸。 ３２Fig. 1 is a sectional view of the main parts of a conventional disk, Fig. 2 is a plan view of a disk according to an embodiment of the present invention, Fig. 3 is a sectional view of the same disk, and Fig. 4 is a partially sectional view of an optical type. A front view of the information recording and reproducing device, and FIGS. 5 and 6 are cross-sectional views of the disc of the present invention installed in the optical information recording and reproducing device. The case is shown in which the back side is attached so that it is in contact with the turntable. 11...Disc-shaped information recording medium (disc), 12...
- Recording medium, 13... Protective layer, 14... Center hole, 1
5... Reflective label, 16... Recess, 17... Motor, 18... Rotating shaft. 32

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] モータの回転軸と嵌合する中心孔を有し、かつ感光体を
記録媒体とし、前記記録媒体の両面に保護層を形成した
円盤状情報記録媒体であって、一方の面の前記中心孔近
傍の表面反射率を、他方の面の前記中心孔近傍の表面反
射率と異なるように構成した円盤状情報記録媒体。A disc-shaped information recording medium that has a center hole that fits with the rotating shaft of a motor, uses a photoreceptor as a recording medium, and has protective layers formed on both sides of the recording medium, the disk-shaped information recording medium being near the center hole on one side. A disk-shaped information recording medium configured to have a surface reflectance different from a surface reflectance near the center hole on the other surface.
JP1982091295U 1982-06-17 1982-06-17 Disc-shaped information recording medium Pending JPS58193362U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1982091295U JPS58193362U (en) 1982-06-17 1982-06-17 Disc-shaped information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1982091295U JPS58193362U (en) 1982-06-17 1982-06-17 Disc-shaped information recording medium

Publications (1)

Publication Number Publication Date
JPS58193362U true JPS58193362U (en) 1983-12-22

Family

ID=30099698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1982091295U Pending JPS58193362U (en) 1982-06-17 1982-06-17 Disc-shaped information recording medium

Country Status (1)

Country Link
JP (1) JPS58193362U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267681U (en) * 1988-11-10 1990-05-22

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267681U (en) * 1988-11-10 1990-05-22

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