Magnetic record/reproduce head and manufacturing method therefor

Abstract From the Canadian patent

Two magnetic ferrite pieces having longitudinal channels formed in the side faces thereof are bonded together with a gapping substance so that the resultant channels form a window. The bonded pieces are precisely slotted to a depth below the apex of the window to form a narrow trackdefining comb-like array. The resulting slots are adapted to receive compatible ceramic wear support material which is so chosen as to wear slightly faster than the ferrite surfaces. In one embodiment, the slots contain ceramicconvertible glass which is devitrified by firing the array. The assembly is then processed lo form a ceramicferrite-ceramic or ceramic-ferrite transducer sandwich which may be further …