Method of manufacturing a magnetic head for a video magnetic tape apparatus
AssigneeU.S. Philips Corporation
InventorsHorst Gukkenberger, Karl Eberle, Karola Weigel-Krengel
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Abstract
A method for manufacturing a video magnetic head in which two soft magnetic core halves (2a, 2b) of amorphous metal are connected via a non-magnetic gap (5) and the core halves are bilaterally supported by core supports (3a, 3b; 4a, 4b) of ferrite. The core halves with the core supports are combined to a core compound by melting a thin low melting point glass layer (7) which is sputtered on the core halves. The combination process is effected by means of simultaneous influence of temperature and pressure.
Claims10
A method of manufacturing a magnetic head for a video magnetic tape apparatus, the head comprising two soft magnetic core halves of amorphous metal having gap surfaces defining a non-magnetic gap therebetween, each core half being supported on both sides by two core supports of a soft magnetic ferrite to form a compound core, said method comprising the following steps:
- providing a bonding layer on both sides of each core half,
- providing a thin glass layer between each core half and each core support, said thin glass layer softening at a temperature which is below the recrystallization temperature of the amorphous metal,
- joining each core half to a pair of core supports to form stacks,
- heating each stack to the softening temperature of the glass layers,
- subjecting each stack to pressure to solder the core halves to the core support.
Dependencies are inferred from the claim text.