Title:
MAGNETIC DISK DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/107680
Kind Code:
A1
Abstract:
This magnetic disk device is a 3.5-inch magnetic disk device equipped with magnetic disks formed from an aluminum alloy substrate. The magnetic disks arranged in a stacked manner have a thickness Td of 0.3 mm to 0.6 mm, the number N of magnetic disks involved is 10 to 16, and spacers disposed between the magnetic disks have an outside diameter 2 Rso of 35 mm to 65 mm. The outside diameter 2 Rso (mm) of the spacers satisfies 2 Rso ≥ –60 Td + 70 and 2 Rso ≤ –0.5 N2 + 16.5 N – 73.
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Inventors:
KITAMURA NAOKI (JP)
KITAWAKI KOTARO (JP)
HATAKEYAMA HIDEYUKI (JP)
YAMADA RYOHEI (JP)
NAKAMURA TOSHIHIRO (JP)
KITAWAKI KOTARO (JP)
HATAKEYAMA HIDEYUKI (JP)
YAMADA RYOHEI (JP)
NAKAMURA TOSHIHIRO (JP)
Application Number:
PCT/JP2021/041570
Publication Date:
May 27, 2022
Filing Date:
November 11, 2021
Export Citation:
Assignee:
UACJ CORP (JP)
FURUKAWA ELECTRIC CO LTD (JP)
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
G11B5/02; G11B5/73; G11B5/82; G11B17/038
Domestic Patent References:
| WO2019151459A1 | 2019-08-08 |
Foreign References:
| JP6505960B1 | 2019-04-24 | |||
| JP2017199442A | 2017-11-02 | |||
| JP6351780B1 | 2018-07-04 | |||
| JP2010067324A | 2010-03-25 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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