JPS6340815U - - Google Patents

Info

Publication number

JPS6340815U

JPS6340815U JP13500286U JP13500286U JPS6340815U JP S6340815 U JPS6340815 U JP S6340815U JP 13500286 U JP13500286 U JP 13500286U JP 13500286 U JP13500286 U JP 13500286U JP S6340815 U JPS6340815 U JP S6340815U

Authority

JP

Japan

Prior art keywords

recording

reproducing device

light

yoke

optical information

Prior art date

1986-09-03

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 5
• XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
• 239000000696 magnetic material Substances 0.000 claims 2
• 229910052742 iron Inorganic materials 0.000 claims 1
• 229910000889 permalloy Inorganic materials 0.000 claims 1