Nhk Spring Co., Ltd.

Sei Kawao

Shinpei Kakiuchi

Takeshi Shimoda

Masaru Inoue

Yukie Yamada

Takumi Karasawa

Naoki Iwamoto

Tomoharu Imai

Rintarou Niwa

A disk drive suspension of the embodiments includes a load beam, and a flexure including a mounting portion on which a slider is mounted and overlapping with the load beam. The load beam includes a tab further extending than the mounting portion longitudinal direction of the load beam. The tab is shaped in an arc such that a central portion in a lateral direction protrudes with respect to both end portions in the lateral direction, in the load beam. Each of the both end portions includes a flat surface parallel to the lateral direction.

Disk drive suspension including a load beam with an arc-shaped tab, disk drive, and disk drive suspension manufacturing method

A flexure mounted on a load beam of a disk drive suspension, including a metal base formed of a stainless-steel plate; and a conductive circuit arranged along the metal base. The conductive circuit includes an insulating layer on the metal base; and a conductor on the insulating layer. The conductor includes a thin conductor portion formed in a first region (A) which is part of the conductive circuit in a longitudinal direction; and a thick conductor portion formed in a second region (A) which is another part of the conductive circuit in the longitudinal direction, the thick conductor portion being thicker than the thin conductor portion. The flexure includes a flexure tail portion having an opening formed in the metal base; a bent portion of the metal base which is bent in a thickness direction at the opening; and a trace curved portion curved in the thickness direction at a position facing the opening. The trace curved portion includes the thick conductor portion.

Flexure of disk drive suspension, and method of manufacturing conductive circuit portion of flexure

A terminal pad of a flexure for a head suspension connected to a functional part through a bonding material includes a terminal body, a base plating formed on a surface of the terminal body and having an uniform thickness, a padding plating made of a same material as the base plating and integrated with the base plating so that the padding plating swells with respect to the base plating, and a surface plating formed on a surface of the padding plating.

Terminal pad of a flexure for a head suspension having a padding plating and method of forming the terminal pad

A suspension includes a load beam and a flexure. The flexure has a metal base and a conductive circuit portion. The conductive circuit portion has an insulating layer formed on the metal base, and a conductor formed on the insulating layer. The conductive circuit portion includes a first region which constitutes a part of the conductive circuit portion in the longitudinal direction, and a second region which constitutes another part of the same in the longitudinal direction. The conductor includes a thin conductor portion having a first thickness arranged in the first region, and a thick conductor portion having a second thickness arranged in the second region. The second thickness is greater than the first thickness.

An interleave circuit includes a metal base, an insulating layer, a first conductor member having first branch conductors, a second conductor member having second branch conductors, and a jumper conductor, which is a part of the metal base. The jumper conductor includes a branch-side metal portion, a pad-side metal portion, and a bridge portion. The bridge portion is formed between the branch-side metal portion and the pad-side metal portion. The branch-side metal portion electrically conducts to connecting terminals of the first branch conductors via branch-side connecting members. The pad-side metal portion electrically conducts to an electrode pad via a pad-side connecting member. The bridge portion includes a crossover portion which crosses over a third conductor member.

Interleave circuit of conductive circuit portion of disk drive flexure

In a first terminal portion, a first conductor, a terminal element as a first protection, and a first gold-plating layer are provided. The first terminal element is thicker than a base nickel layer of a slider terminal portion. The first gold-plating layer is provided with a first roughening processed portion. An electrically conductive paste contacts the roughening processed portion. In a second terminal portion, a second conductor, a terminal element as a second protection, and a second gold-plating layer are provided. The second terminal element is thicker than the base nickel layer. The second gold-plating layer is provided with a second roughening processed portion. An electrically conductive paste contacts the second roughening processed portion.

Disk drive suspension

A method of surely removing a read/write slider from a flexure without large displacement of the slider, the slider attached to the flexure of the head suspension through an adhesive, comprises heating the slider so that the adhesive is heated through an adhered surface of the slider being in contact with the adhesive; and applying ultrasonic vibration to the slider so that the adhered surface of the slider vibrates at ultrasonic frequency with respect to the adhesive.

Method of removing slider from flexure without large displacement of the slider

A cutting jig cuts bonding material of a terminal joint between a magnetic head's slider and a flexure's wiring terminal. A base of the jig receives the slider. A blade moves along the base and faces a front side wall of the slider in a moving direction. An upright portion of the jig is formed on the base and has a stop face that faces a rear side wall of the slider in the moving direction. The blade moves toward the slider to come into contact with the bonding material, and is pressed to the front side wall of the slider. The bonding material is interposed in the moving direction while the rear side wall of the slider is brought into contact with and is stopped by the stop face when the slider is set on the base and the bonding material is cut.

Cutting jig for reworking head suspension

A method of reclaiming a head suspension includes detaching a sliderfrom a tongueof the head suspension and removing an adhesiveremaining on the tongue. Removing the adhesiveremaining on the tongueincludes feeding a solvent, which promotes the removal of the adhesive, to a part of the tonguewhere the adhesiveremains and promoting the removal of the remaining adhesivefrom the tongueby applying physical energy to the adhesive remaining part on the tongue. The physical energy is produced by heating, supersonic vibration, and the like. The method easily removes the adhesivefrom the tonguewithout directly applying mechanical force to the tongue, thereby improving yields.

Method of reclaiming a head suspension from a head gimbal assembly

A method of reworking a head suspension removes a slider from the head suspension by pressing a blade from a first side toward a second side in a longitudinal direction of the slider to solder ball bonding, stopping the second side of the slider in the longitudinal direction with a holding mechanism, and forcing the blade to bite and cut the solder ball bonding to remove the slider from the flexure. The solder ball bonding is cut without applying extra force to components of the head suspension except the slider. The method improves product yield.

Growing community of inventors

Aiko-gun, Japan

Sei Kawao