JPH0416624U - - Google Patents

Info

Publication number

JPH0416624U

JPH0416624U JP1990057791U JP5779190U JPH0416624U JP H0416624 U JPH0416624 U JP H0416624U JP 1990057791 U JP1990057791 U JP 1990057791U JP 5779190 U JP5779190 U JP 5779190U JP H0416624 U JPH0416624 U JP H0416624U

Authority

JP

Japan

Prior art keywords

hub member

spacer

information recording

inner circumferential

optical information

Prior art date

1990-05-31

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

• 125000006850 spacer group Chemical group 0.000 claims description 12
• 230000003287 optical effect Effects 0.000 claims description 6
• 239000000758 substrate Substances 0.000 claims description 3
• 229920003002 synthetic resin Polymers 0.000 claims description 3
• 239000000057 synthetic resin Substances 0.000 claims description 3
• 239000000696 magnetic material Substances 0.000 claims description 2
• 238000010586 diagram Methods 0.000 description 1