US 11,955,150 B1
Disk device including damper to attenuate vibration
Tomoyuki Tokizaki, Yokohama Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed on Mar. 7, 2023, as Appl. No. 18/179,707.
Claims priority of application No. 2022-150341 (JP), filed on Sep. 21, 2022.
Int. Cl. G11B 5/48 (2006.01); G11B 33/08 (2006.01)
CPC G11B 5/4833 (2013.01) [G11B 5/4813 (2013.01); G11B 33/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A disk device comprising:
a plurality of magnetic disks each having a recording surface;
a first head gimbal assembly including
a first magnetic head configured to read and write information from and to a first magnetic disk of the plurality of magnetic disks,
a first load beam supporting the first magnetic head, and
a first base plate connected to the first load beam;
a first damper including
a first viscoelastic material, and
a first member attached to the first viscoelastic material and having higher rigidity than the first viscoelastic material; and
a carriage configured to rotate about a rotation axis to move the first magnetic head along the recording surface of the first magnetic disk, the carriage including
an arm, and
a first flat surface of the arm, the first flat surface configured to face the recording surface of the first magnetic disk and to which the first base plate and the first viscoelastic material are fixed, wherein
the first base plate includes
a first surface facing the first flat surface, and
a second surface opposite the first surface and formed to face the recording surface of the first magnetic disk, and
in a direction along the rotation axis, a distance between the first surface and the second surface is 0.1 mm or less.