Magnetic head with thin sheet exhibiting magnetoresistive property
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorKenji Kanai
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Abstract
A thin ferromagnetic sheet or layer exhibiting magnetoresistance property is connected in the magnetic circuit of a magnetic head including a head or air gap, and a pair of current terminals are attached to the thin ferromagnetic sheet and spaced apart by a predetermined distance from each other so as to flow the current of a predetermined magnitude through the thin ferromagnetic sheet, whereby the variation in magnetic field produced by a magnetic recording medium passing over the head or air gap may be detected in terms of the voltage variation between the current terminals.
Claims6
A magnetic head comprising a thin substantially U-shaped ferromagnetic sheet which is made of a material exhibiting magnetoresistance property and which is connected magnetically in at least one portion of a magnetic circuit having an air gap with the open end of said U-shaped ferromagnetic sheet forming at least part of said air gap, and a pair of current electrodes or terminals attached to the ends of said thin ferromagnetic sheet for receiving current flow of a predetermined magnitude through said thin ferromagnetic sheet, whereby the variation in magnetic field across said air gap of said ferromagnetic sheet may be detected as the variation in voltage across said pair of current electrodes or terminals.
Dependencies are inferred from the claim text.