Nhk Spring Co., Ltd.

Ryosuke Yonekura

Shinji Sugiyama

Yoshihiro Teramoto

A method of manufacturing a base plate, after deburring and heat-treating a half-finished base plate, cuts off a scrap section at the ends of the scrap section from a half-finished actuator attaching area so that cutting surfaces left in a finished actuator attaching area are positioned onto the inner perimeter of the finished actuator attaching area and are oriented to at least partly face an actuator attaching position inside the finished actuator attaching area.

Head suspension having cutting surface that is not deburred in actuator attaching area of base plate, method of manufacturing base plate of the head suspension, and method of manufacturing the head suspension

A terminal structure includes an insulating layer hole formed through an insulating layer, a ground via that passes through the insulating layer hole and electrically connects a wiring layer formed on the insulating layer and a metal layer formed under the insulating layer to each other, and a terminal face defined on a surface of the metal layer and bonded through a conductive adhesive to an electrode of a piezoelectric element.

Terminal structure, flexure, and head suspension having a terminal face on metal layer connected to wiring layer

A load beam of a head suspension has a rigid part and a resilient part supported with a base to be attached to a carriage arm. The load beam applies a load onto a head supported at a front end of the rigid part. The load beam includes a load bend formed in each of a pair of legs that extend from widthwise sides of a base end of the rigid part and form the resilient part. The load bend is formed by bending the leg along a bend line that is defined on the leg and extends in a width direction of the load beam. The bend lines on the legs are positionally shifted from each other in a length direction of the load beam.

Load beam with load bends generating load, head suspension with the load beam, and method of forming load bends of the load beam

A head suspensionincludes a base plate, a load bend, a load beam, a flexure, and a sliderthat are assembled together through several processes including a pressing process. In such a head suspensionthat is a finished product in a conventional sense, a front endof the base plateis twisted so that the front endinclines toward one of inner and outer circumferences of a disk-like recording medium. The twisting process is carried out before attaching the head suspensionto an armof a carriage to be installed in a hard disk drive. The head suspensionwith the twisted front endprevents off-track errors even when it is used for a multi-arm assembly involving a plurality of head suspensions.

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Kanagawa, Japan

Ryosuke Yonekura