JPH0439823U - - Google Patents

Info

Publication number
JPH0439823U
JPH0439823U JP8003390U JP8003390U JPH0439823U JP H0439823 U JPH0439823 U JP H0439823U JP 8003390 U JP8003390 U JP 8003390U JP 8003390 U JP8003390 U JP 8003390U JP H0439823 U JPH0439823 U JP H0439823U
Authority
JP
Japan
Prior art keywords
center hole
inner diameter
shaped recording
center
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
Application number
JP8003390U
Other languages
English (en)
Japanese (ja)
Other versions
JP2564984Y2 (ja
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 filed Critical
Priority to JP1990080033U priority Critical patent/JP2564984Y2/ja
Publication of JPH0439823U publication Critical patent/JPH0439823U/ja
Application granted granted Critical
Publication of JP2564984Y2 publication Critical patent/JP2564984Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Physical Vapour Deposition (AREA)
  • Manufacturing Optical Record Carriers (AREA)
JP1990080033U 1990-07-28 1990-07-28 円板状記録媒体製造用マスク装置 Expired - Fee Related JP2564984Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990080033U JP2564984Y2 (ja) 1990-07-28 1990-07-28 円板状記録媒体製造用マスク装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990080033U JP2564984Y2 (ja) 1990-07-28 1990-07-28 円板状記録媒体製造用マスク装置

Publications (2)

Publication Number Publication Date
JPH0439823U true JPH0439823U (zh) 1992-04-03
JP2564984Y2 JP2564984Y2 (ja) 1998-03-11

Family

ID=31624730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990080033U Expired - Fee Related JP2564984Y2 (ja) 1990-07-28 1990-07-28 円板状記録媒体製造用マスク装置

Country Status (1)

Country Link
JP (1) JP2564984Y2 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6333608A (ja) * 1986-07-29 1988-02-13 Hitachi Maxell Ltd 半径測定装置
JPS63154308A (ja) * 1986-12-19 1988-06-27 Hitachi Ltd レプリカ装置
JPH0178321U (zh) * 1987-11-13 1989-05-26

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6333608A (ja) * 1986-07-29 1988-02-13 Hitachi Maxell Ltd 半径測定装置
JPS63154308A (ja) * 1986-12-19 1988-06-27 Hitachi Ltd レプリカ装置
JPH0178321U (zh) * 1987-11-13 1989-05-26

Also Published As

Publication number Publication date
JP2564984Y2 (ja) 1998-03-11

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees