SKIVMINNE MED MAGNETHUVUD FJEDRANDE UPPHENGT PA EN ACCESSARM

摘要

A resiliently suspended magnetic transducer (head) with distinctive convex contours is positioned to form a hydrodynamic bearing relative to the surfaces of randomly selected object discs in a continuously rotating laminar assembly of several hundred flexible discs. The normally contiguous discs are spread partially open by flexure at randomly selected interfaces. The head operates in the work space formed by such flexure. When the spring tension on the head suspension is suitably adjusted ("tuned") a hydrodynamically lubricated dimple intimately complementing the head contour forms in the rotational path of the object disc at head interface. The dimple displacement is generally greater than a disc thickness. A constant tension empirically determined enables the head to operate with satisfactory conformality and lubrication relative to all but a small number of end-positioned discs. By not using these end discs as working records the "TUNING-* tension may be pre-adjusted and maintained at a constant level. Alternately, the tension could be dynamically "tuned" or servoed to permit effective working operation relative to the end discs.