US 4,376,337 AGranted

Method of manufacturing magnetic transducer head

AssigneeSony Corporation

InventorsTomio Kobayasi, Kouji Fukushi

Life of this patent

Estimating the term…

Loading patent…

Abstract

A multi-channel magnetic transducer head is formed by combining two core blocks with a magnetic gap therebetween. On the confronting surface of one of two core blocks, there is provided a plurality of parallel grooves. On the confronting surface of another core block, there is provided a gap defining a groove extending perpendicular to the parallel grooves. A plurality of first conductor strips are formed on the confronting surface of the one core and in the parallel grooves and the strips extend in the direction substantially perpendicular to the parallel grooves. Another surface of the one core opposite to the confronting surface is ground until the conductor strips are disposed on the surface and the cores are separated into a plurality of core elements. Second conductor strips are formed on the opposite surface to form coils around the core elements in co-operation with the first conductor strips.

Claims3

Dependent claims

A method of manufacturing a magnetic transducer head comprising the steps of;

(a) preparing first and second magnetic cores, each having a first planar surface and a second planar surface opposite to said first surface;
(b) forming first parallel grooves in one direction, leaving a predetermined width on said each first surface of said first and second cores;
(c) forming a second groove extending perpendicular to said one direction on said first surface of at least one of said first and second cores;
(d) forming a conductive line on said first surface and in said first parallel grooves of said first core extending along a direction substantially perpendicular to said one direction;
(e) bonding said first and second cores to form an operating magnetic gap between said first surfaces of said first and second cores and place said conductive line to meet said second groove, and filling said first and second grooves with non-magnetic material;
(f) removing a part of said first core from said second surface so as to dispose portions of said conductive line and to separate said conductive line in said first parallel grooves;
and
(g) forming second conductive material on said second surface of said first core to connect said portions of said first conductive line disposed on said second surface so as to form a coil around said first core.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/304,672Filed 28 Sep 1981 · division
Priority: JP 53-15713819 Dec 1978
Granted: 15 Mar 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G11B 5/295
Structure or manufacture of unitary devices formed of plural heads for more than one track: manufacture
G11B 5/29
Structure or manufacture of heads, e.g. inductive: structure or manufacture of unitary devices formed of plural heads for more than one track
Y10T 29/49048
Fabricating head structure or component thereof: machining magnetic material [e.g., grinding, etching, polishing]
Y10T 29/49052
Machining magnetic material [e.g., grinding, etching, polishing]: by etching