Two-gap magnetic read/write head
AssigneeAmpex Corporation
InventorsBeverley R. Gooch, George Varian
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Abstract
An improved magnetic head obviates the need for separate read and write heads in a magnetic storage system by providing a head core having two physical gaps configured to generate a reproduce track width that is narrower than a record track width. The core of the head comprises a tapered center pole disposed between two generally symmetrical main poles to form physical record and reproduce gaps. A magnetically saturable, high permeability element is disposed within the core in a manner that bridges the rear of the record gap.
Claims4
A magnetic head for writing magnetic signals to and reading magnetic signals from a storage medium within a high-density magnetic storage system comprising:
- a high permeability magnetic core structure defining a single magnetic circuit path associated with a single winding and having separate write and read gaps within the core,
- said core structure further including a high permeability, magnetically saturable element disposed in proximity to a rear portion of the write gap with the thickness and saturation field density of said element being selected so that said element acts as a low reluctance path for mmf existing at the write gap during read mode operation of the head and becomes saturated during write mode of the head whereby mmf at each gap is substantially equal.
Dependencies are inferred from the claim text.