Kabushiki Kaisha Toshiba

Toshiba Electronic Devices & Storage Corporation

Sae Magnetics (h.k.) Limited

Hirofumi Nesori

Kenichiro Aoki

Naoto Matono

Yasutaka Sasaki

Takafumi Kikuchi

Takuma Kido

Kazushi Nishiyama

Takeshi Okutomi

According to one embodiment, a head actuator includes a first suspension assembly including a first support plate, a first wiring member with first wiring lines, and a first head, and a second suspension assembly including a second support plate, a second wiring member with second wiring lines, and a second head. The first wiring lines include at least four first read lines and at least four first write lines. The second wiring lines include at least four second read lines and at least four second write lines. At least two of the first read lines and at least two of the first write lines are arranged at a position offset to the second read lines and the second write lines in a width direction of the wiring member.

Head actuator and disk device

According to one embodiment, a head suspension assembly includes a support plate, a wiring member on the support plate, a head, and a piezoelectric element on the wiring member. The wiring member includes a metal plate and a multilayered member including a first insulating layer, a conducting layer, a second insulating layer, and connection pads formed from the conducting layer. Each of the connection pads is overlaid on a recess formed in the first insulating layer, so as to form a recessed portion along the recess, and the second insulating layer includes an opening opposing each of the connection pads. The piezoelectric element is connected to the connection pads by a conductive adhesive filled in the openings and the recessed portions of the connection pads.

Head suspension assembly and disk device

According to one embodiment, a suspension assembly includes a support plate having a distal end portion and a base end portion, a wiring member having a gimbal portion and provided on the support plate, and a magnetic head mounted on the gimbal portion. In the gimbal portion, the wiring member includes a head mounting region where the magnetic head is mounted, and an etching region including a recess located and formed at least partially in the head mounting region. The magnetic head is bonded to the head mounting region of the wiring member by an adhesive filled in the head mounting region and the recess.

Suspension assembly and disk device

According to one embodiment, a microactuator includes a wiring substrate, and a piezoelectric element connected to first and second connecting pads of the wiring substrate. The piezoelectric element includes a piezoelectric substrate, and a first electrode and a second electrode provided on surfaces of the piezoelectric substrate. The first electrode includes a first electrode portion on an end portion on a first main surface. The second electrode includes a fifth electrode portion having an electrode end which faces the first electrode portion across a gap and provided on the first main surface. The piezoelectric element includes a protective insulating layer covering at lease an end portion of the fifth electrode including the electrode end.

Microactuator, head suspension assembly and disk device

A thin-film piezoelectric material element includes a piezoelectric part having a laminated structure which a lower electrode film, a piezoelectric material film and an upper electrode film are laminated sequentially, and electrode pads connected with the piezoelectric part. The thin-film piezoelectric material element has solder regulating parts formed on pad surfaces being surfaces of the electrode pads. The solder regulating parts have peripheral edge parts and crossing edge parts connected with the two outer edge parts, and formed to cross the pad surfaces. The crossing edge parts are formed in a bow like curve-shape having curved parts, being gradually distant from the shortest line as they are distant more from the outer edge parts.

Thin-film piezoelectric material element having a solder regulating part formed on a pad surface being a surface of an electrode pad

A head gimbal assembly includes a base plate, a load beam, a first end of which is supported by the base plate, a magnetic head supported at a second end of the load beam, a flexure including a plurality of wirings electrically connected to the magnetic head, the flexure extending from a surface of the base plate to an edge of the base plate, an adhesive applied in a space formed between the surface of the base plate and a surface of the flexure facing the surface of the base plate to bond the flexure to the base plate and to the edge of the base plate.

Head gimbal assembly in which flexure swing is suppressed and disk device including the same

According to one embodiment, a disk drive apparatus includes a base, a recording medium, a drive motor, a head, a carriage, and a latch mechanism. The latch mechanism includes a latch member, which is supported on the base to be movable between a latch position and a release position, and a latch stop provided on the base and configured to regulate the movement of the latch member in a direction of the latch position. The latch member has a first abutment portion which abuts the carriage and moves the latch member from the release position to the latch position according to the movement of the carriage, when the carriage moves from the information processing position to the retracted position, a latch hook capable of latching the carriage at the latch position, and a second abutment portion which confronts to the latch hook with a gap at the latch position.

Growing community of inventors

Chuo Tokyo, Japan

Hirofumi Nesori