TH99570B - Glass plates are used with magnetic disks and magnetic disks. - Google Patents

Abstract

The aim is to offer suitable plates to motion hard disks, stopping in a highly reliable unloading type, controlling impact problems even in rotating magnetic disks. With high speed and magnetic disks used this The plate's representative structure, applied to the magnetic discs used in fabrication, has a special feature of 10 glass plates.The circular discs consist of a relatively smooth primary surface 11 and a 12 edge and a 13 chamfered surface forming between 11 and 11 primary surfaces. Edged 12 and have a convex, convex, or slit from the flat surface. Outside of this periphery, in the main surface 11, the convex portion is uniform in size around the circle of glass plates 10.

Claims (3)

1.Plates are used with magnetic disks with special properties that are glass plates. It consists of a relatively primary skin. Smooth and edge and chamfered surfaces, forming angles between the main surface and the edge surface, and there is a convex convexity. Or concave down from the flat surface outside this periphery in the primary surface The size of the concave convex section is uniform around this plate. 2.Plates are used on magnetic disks as recorded in claim 1, having special properties that the aforementioned concave dimensions are equally uniform along the circumference at any radial position. 3.Plates are used with magnetic disks as required.