JPH02135928U - - Google Patents

Info

Publication number

JPH02135928U

JPH02135928U JP4210489U JP4210489U JPH02135928U JP H02135928 U JPH02135928 U JP H02135928U JP 4210489 U JP4210489 U JP 4210489U JP 4210489 U JP4210489 U JP 4210489U JP H02135928 U JPH02135928 U JP H02135928U

Authority

JP

Japan

Prior art keywords

optical disk

mask

jig

function

guiding

Prior art date

1989-04-11

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

• Espacenet
• Global Dossier
• Discuss

• 230000003287 optical effect Effects 0.000 claims description 7
• 239000002184 metal Substances 0.000 claims 1
• 230000001681 protective effect Effects 0.000 claims 1
• 238000004544 sputter deposition Methods 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 1