Patent ID: 11869543
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 7:
8. A disk device comprising:
a magnetic disk;
a magnetic head configured to read and write information from and to the magnetic disk;
a first flexible printed circuit board including a plurality of first terminals, on which the magnetic head is mounted and electrically connected to at least one of the plurality of first terminals;
a second flexible printed circuit board including
a surface,
a plurality of second terminals on the surface, individually bonded to the corresponding first terminals with a conductive bonding material,
a plurality of third terminals on the surface,
a plurality of wires connecting the plurality of second terminals and the plurality of third terminals, and
a first ground plane covering at least one of the plurality of second terminals, at least one of the plurality of third terminals, and at least one of the plurality of wires in a direction orthogonal to the surface; and

a preamplifier connected to the plurality of third terminals, configured to
output, to the magnetic head, an electric signal representing information to be written to the magnetic disk by the magnetic head, and
receive, from the magnetic head, an electric signal representing information read from the magnetic disk by the magnetic head, wherein

in a direction along the surface, the first ground plane is at least partially apart from one of the plurality of wires, one of the plurality of second terminals, and one of the plurality of third terminals, the one of the plurality of second terminals and the one of the plurality of third terminals being connected to the one of the plurality of wires.