Method of manufacturing magnetic heads

Details Method of manufacturing magnetic heads Method of manufacturing magnetic heads

G - Physics

11

B

26/124

G11B 5/23 (2006.01) G11B 5/133 (2006.01) G11B 5/193 (2006.01)

Patent

CA 1048250

METHOD OF MANUFACTURING MAGNETIC HEADS ABSTRACT OF THE DISCLOSURE A method of manufacturing magnetic heads comprises the steps of providing a pair of core block pieces which are used to form magnetic heads, the core block pieces having gap defining surfaces formed thereon; cutting part of one of the core block pieces including the gap defining sur- face thereof to provide a pair of end block pieces; form ing a thin film of a thickness corresponding to a desired gap length on the opposite surface of the end block pieces from the surface on which the gap defining surface is located to thereby form offset block pieces, and subseq- uently disposing them to either side of the remainder of said one core block piece with their lower surfaces lying on a common plane; or alternatively disposing the end block pieces on a pair of raised steps formed adjacent to the opposite sides of a stepped table, with the remainder of the one core block piece disposed on a central recess located between the steps of the table which is at a lower elevation than the steps by an amount corresponding to a desired gap length; disposing the other core block piece on top of said one block piece so that their gap defining surfaces are located opposite to each other; causing a gap forming material to melt and permeate into clearances which are formed between the gap defining surfaces of the upper and lower core block pieces as a result - 1 - of the offset or the step, solidifying the gap forming material to produce a core block in which a desired gap is formed, and cutting the core block to size, thereby producing a plurality of cores.

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