JPH0441457Y2 - - Google Patents

Info

Publication number

JPH0441457Y2

JPH0441457Y2 JP11960685U JP11960685U JPH0441457Y2 JP H0441457 Y2 JPH0441457 Y2 JP H0441457Y2 JP 11960685 U JP11960685 U JP 11960685U JP 11960685 U JP11960685 U JP 11960685U JP H0441457 Y2 JPH0441457 Y2 JP H0441457Y2

Authority

JP

Japan

Prior art keywords

magnetic

disk

magnetic disk

groove

radial direction

Prior art date

1985-08-03

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.)

Expired

Links

• Espacenet
• Global Dossier
• Discuss

• 230000002093 peripheral effect Effects 0.000 claims 2
• 239000000758 substrate Substances 0.000 description 6
• XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
• 229910052782 aluminium Inorganic materials 0.000 description 5
• 239000000463 material Substances 0.000 description 3
• UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
• 230000006378 damage Effects 0.000 description 2
• 239000000428 dust Substances 0.000 description 2
• 238000005516 engineering process Methods 0.000 description 2
• -1 polyethylene Polymers 0.000 description 2
• 229920002799 BoPET Polymers 0.000 description 1
• 239000004697 Polyetherimide Substances 0.000 description 1
• 239000004698 Polyethylene Substances 0.000 description 1
• 239000004743 Polypropylene Substances 0.000 description 1
• 238000003490 calendering Methods 0.000 description 1
• 239000011248 coating agent Substances 0.000 description 1
• 238000000576 coating method Methods 0.000 description 1
• 239000012141 concentrate Substances 0.000 description 1
• 238000001035 drying Methods 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• 239000006260 foam Substances 0.000 description 1
• 239000003365 glass fiber Substances 0.000 description 1
• 238000001746 injection moulding Methods 0.000 description 1
• 239000007788 liquid Substances 0.000 description 1
• 238000000034 method Methods 0.000 description 1
• 238000005498 polishing Methods 0.000 description 1
• 229920001601 polyetherimide Polymers 0.000 description 1
• 229920000573 polyethylene Polymers 0.000 description 1
• 229920001155 polypropylene Polymers 0.000 description 1
• 238000004528 spin coating Methods 0.000 description 1
• 230000003746 surface roughness Effects 0.000 description 1
• 229920001169 thermoplastic Polymers 0.000 description 1
• 238000007740 vapor deposition Methods 0.000 description 1