Dynamic performance of parallel link suspension with seek motion during contact-sliding
Seek behavior and orientation of a contact-sliding head were investigated for two types of suspension with a ball slider. In a fundamental measurement, a seek behavior of the ball slider with a parallel link suspension was independent of kinetic friction in the sliding direction. A torsional displacement of the ball slider was inverse proportional to a ratio of torsional rigidity between a single beam and a parallel link suspension. In a dynamic measurement on a rotary disk, the ball slider with the single beam bounced intensely and showed large torsional displacement. While the parallel link suspension showed negligible torsion and kept stable orientation during seek motion.
Contact perpendicular recording on rigid media
The authors describe integrated head/flexure structures which have an effective mass of about 300 mu g, evidence no indication of head crash, and hold the potential for very low wear of both head and media, when operating in continuous sliding contact at media velocities of 15 m/s or greater. A perpendicular probe type transducer was constructed as an integral part of a thin dielectric flexure. Initial recording performance on two-layer perpendicular media indicates promise for achieving very high linear and track densities, and the extremely small mass facilitates the design of servo systems and actuators capable of substantially reducing track access time. >
A Single Pole Type Thin Film Head with a Narrower Gap Length
The read-write characteristics of single pole type heads with a one-sided core, which have various kinds of gap lengths between the return path core and the main pole, were measured after recorded on a double-layered flexible media. The reduction in the gap length was a very effective way to improve the recording and reproducing efficiencies. However, the reproduced voltage at a high linear density depended greatly on the coercive force of the media.