公开(公告)号：DE1524777A1

公开(公告)日：1970-10-08

申请号：DEJ0033173

申请日：1967-03-09

Applicant: IBM

Inventor： SCHWARTZ BERNARD ,  LEON TURK HAROLD

IPC: G11B5/127 ,  G11B5/133 ,  G11B5/265 ,  G11B5/29 ,  G11B5/42

Abstract: 1,144,288. Laminates. INTERNATIONAL BUSINESS MACHINES CORP. 9 March, 1967 [11 March, 1966], No. 11045/67. Heading B5N. [Also in Divisions G 5 and H1] A laminated structure comprises a plurality of layers of particulate magnetic material with a binder, separated by layers of particulate non- magnetic material with a binder, and sintered to form a unitary structure. Each layer may be formed separately by mixing the particulate material with the binder and a solvent, spreading it on a base, and peeling it off after evaporation of the solvent. The layers are then stacked and sintered at 1000-1500‹ C. The materials used may be a magnetic ferrite, and Pd or a non-magnetic ferrite, in a polyvinyl butyral resin binder. The structure may be cut prior to sintering to form toroids, or shapes used in making recording heads.

公开(公告)号：DE2002510A1

公开(公告)日：1970-07-30

申请号：DE2002510

申请日：1970-01-21

Applicant: IBM

Inventor： WOODFORD BREDE DWIGHT ,  HENRY COOK MILES ,  EDWIN FREEMANN MARSHALL ,  LEON TURK HAROLD ,  CLARA SAN JOSE SANTA

IPC: G11B5/105 ,  G11B5/133 ,  G11B5/187 ,  G11B5/60 ,  G11B21/21 ,  G11B21/20

Abstract: 1,274,115. Magnetic heads. INTERNATIONAL BUSINESS MACHINES CORP. 7 Jan., 1970 [27 Jan., 1969], No. 760/70. Addition to 1,273,056. Heading G5R. The magnetic head assembly of the parent Specification is modified in that the housing is composed of three sections secured together by glass.