H - Electricity – 04 – R
Patent
H - Electricity
04
R
317/29.4
H04R 31/00 (2006.01) G11B 5/193 (2006.01)
Patent
CA 1065962
ABSTRACT OF THE DISCLOSURE A method of manufacturing a magnetic head comprises the steps of providing a pair of core block pieces each having an abutting area and a gap defining surface which is slightly recessed relative to the abutting area, disposing the pair of core block pieces in a manner that the gap defining surfaces are located opposite to each other and the abutting areas are held in abutment against each other, thereby defining a gap between the gap defining surfaces, placing a quantity of a gap forming material such as glass, ceramic, enamel or the like within or adjacent to the gap, heating the gap form- ing material to cause it to melt, cooling the core block pieces, upon completion of permeation of the gap forming material into the respective gaps, to solidify such material, thereby providing a core block, cutting and/or slicing the core block into cores of a given size, winding a coil on the individual cores, and fixedly mounting each of the cores with the coil thereon in a housing to provide a magnetic head. In the magnetic head thus formed, the gap in the core is defined by the pair of gap defining surfaces, at least one of which is bevelled. A desired gap length is obtained by cutting the core at an optimum position along the length of the gap defining surfaces or along a suitable cutting plane as defined herein. - 1 -
254220
Morokuma Tadashi
Tsuda Naotsune
Olympus Optical Company Ltd.
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