In order to realize ultimately small headp-media spacing, a parallel link suspension mechanism is proposed for ultra high-density prependicular recording. A test fabricanted pparallel link suspension could keep a stable slider orientation, providing a high torsional rigidity which suppressed rolling. Dynamic slider behaviors for two type suspensions of a parallel linke and a single beam (plate spring type) ere investigated byusing an optical-fiber displacement sensor. The slider with the single beam suspension easily bounced on a disk surface, although the lubrication a little suppressed the orientation instability. While, the parallel link suspension could keep a stable contact sliding of the slider. Namely, the slider never bounced on any surface contions of the lubricated or non-lubricated disks, suppressing the torsion fluctuation at the seek motion. Flat envelopes of the read-back signal at a high density verified the head orientation stability for contact sliding in an actual recording system. The parallel link mechanism has an advantage especially for high-desnity recording by using the SPT head.
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