JPS62190975U - - Google Patents

Info

Publication number

JPS62190975U

JPS62190975U JP7885686U JP7885686U JPS62190975U JP S62190975 U JPS62190975 U JP S62190975U JP 7885686 U JP7885686 U JP 7885686U JP 7885686 U JP7885686 U JP 7885686U JP S62190975 U JPS62190975 U JP S62190975U

Authority

JP

Japan

Prior art keywords

optical disk

diameter

hollow cylindrical

cylindrical material

outer diameter

Prior art date

1986-05-27

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 8
• 239000000463 material Substances 0.000 claims description 4
• 239000010410 layer Substances 0.000 claims description 3
• 239000012790 adhesive layer Substances 0.000 claims description 2
• 238000010586 diagram Methods 0.000 description 2
• 238000000034 method Methods 0.000 description 1