JP2520595Y2 - 光ディスク - Google Patents

光ディスク

Info

Publication number
JP2520595Y2
JP2520595Y2 JP1990042368U JP4236890U JP2520595Y2 JP 2520595 Y2 JP2520595 Y2 JP 2520595Y2 JP 1990042368 U JP1990042368 U JP 1990042368U JP 4236890 U JP4236890 U JP 4236890U JP 2520595 Y2 JP2520595 Y2 JP 2520595Y2
Authority
JP
Japan
Prior art keywords
center hole
disc
disk
metal plate
spindle shaft
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 - Fee Related
Application number
JP1990042368U
Other languages
English (en)
Japanese (ja)
Other versions
JPH042374U (US07922777-20110412-C00004.png
Inventor
賢二 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP1990042368U priority Critical patent/JP2520595Y2/ja
Publication of JPH042374U publication Critical patent/JPH042374U/ja
Application granted granted Critical
Publication of JP2520595Y2 publication Critical patent/JP2520595Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
JP1990042368U 1990-04-20 1990-04-20 光ディスク Expired - Fee Related JP2520595Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990042368U JP2520595Y2 (ja) 1990-04-20 1990-04-20 光ディスク

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990042368U JP2520595Y2 (ja) 1990-04-20 1990-04-20 光ディスク

Publications (2)

Publication Number Publication Date
JPH042374U JPH042374U (US07922777-20110412-C00004.png) 1992-01-09
JP2520595Y2 true JP2520595Y2 (ja) 1996-12-18

Family

ID=31553855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990042368U Expired - Fee Related JP2520595Y2 (ja) 1990-04-20 1990-04-20 光ディスク

Country Status (1)

Country Link
JP (1) JP2520595Y2 (US07922777-20110412-C00004.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003482A1 (en) * 1991-08-02 1993-02-18 Mitsui Petrochemical Industries, Ltd. Hub for optical recording medium and optical recording medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200310A (ja) * 1985-03-01 1986-09-04 Fuji Electric Co Ltd 蒸気タ−ビンのフランジおよび締付ボルトの温度加減方法

Also Published As

Publication number Publication date
JPH042374U (US07922777-20110412-C00004.png) 1992-01-09

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