公开(公告)号：DE3176238D1

公开(公告)日：1987-07-09

申请号：DE3176238

申请日：1981-07-23

Applicant: IBM DEUTSCHLAND ,  IBM

Inventor： HINKEL HOLGER DR ,  KUNZEL ULRICH DR ,  MAX ERHARD DR ,  SCHNEIDER JOCHEN

IPC: G11B5/73 ,  G11B5/84 ,  G11B5/82

Abstract: A substrate for a magnetic recording disk employs an annular core of synthetic material having thin metal foils bonded to opposite faces, the metal foils serving to receive a magnetic recording material to form a magnetic recording structure. The inner surfaces of foils which are bonded to the core faces have applied thereto a thin, soft, deformable layer such as copper to prevent irregularities in the core faces from affecting the outer surfaces of the metal foils.

公开(公告)号：AT27663T

公开(公告)日：1987-06-15

申请号：AT81105823

申请日：1981-07-23

Applicant: IBM

Inventor： HINKEL HOLGER DR ,  KUENZEL ULRICH DR ,  MAX ERHARD DR ,  SCHNEIDER JOCHEN

IPC: G11B5/73 ,  G11B5/84 ,  G11B5/82