Multichannel transducer structure with improved interchannel cross talk rejection
AssigneeAmpex Corporation
InventorBeverley R. Gooch
Life of this patent
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Abstract
Members of magnetic material are attached at a front end surface of a multichannel magnetic transducer to form an asymmetric magnetic circuit. A member is attached to one magnetic pole of each pair of poles forming a transducing channel. The members on consecutive adjacent channels are attached alternatively to poles located on the opposite sides of the transducer front end surface. The members are placed out of contact with the recording medium and at a distance from the transducing gaps to prevent magnetic coupling therewith, respectively.
Claims17
A multichannel magnetic transducer structure having a plurality of spaced transducing channels, each channel having a pair of magnetic poles defining a transducing gap therebetween, a magnetic back core contiguous with the poles and an associated transducing winding, comprising in combination:
- a plurality of members of magnetic material firmly attached to said transducer structure at a front end surface thereof, each member being associated with one magnetic pole of each pair of poles and provided in close proximity thereof to form a low reluctance magnetic path therewith, each member extending substantially across said associated pole in the direction of a recording track width and provided at a distance from both said transducing gap and from an associated magnetic medium to prevent magnetic coupling therewith, respectively, said members of magnetic material being associated alternatively with poles located on the opposite sides of said transducer front end surface on consecutive adjacent channels to form an asymmetrical multichannel magnetic transducer structure.
A magnetic transducer structure having two adjacent spaced parallel transducing channels, each channel having a pair of confronting magnetic poles defining a transducing gap therebetween, a magnetic core contiguous with the poles, a transducing winding associated with the core, an interchannel magnetic shield provided between said transducing channels, and outer magnetic shields each provided adjacent to one said transducing channel, respectively, comprising in combination:
- a member of magnetic material attached at a front end surface of the transducer to one pole of each said pair of poles and to said adjacent outer shield to form a low reluctance magnetic path therewith, respectively, said members being attached to poles provided on the opposite sides of said transducer front end surface with respect to each-other, each said member extending substantially across said pole and adjacent outer shield in the direction of a track width and provided at a distance from said transducing gap, associated magnetic medium and interchannel shield, respectively, to prevent magnetic coupling therewith.
A magnetic transducer structure having a plurality of spaced parallel transducing channels, each channel having a pair of confronting magnetic poles defining a transducing gap therebetween, a magnetic core contiguous with the poles, a transducing winding associated with the core and a plurality of interchannel magnetic shields provided between adjacent transducing channels, comprising in combination:
- a plurality of magnetic members, each member being attached to one pole of each said pair of poles at a front end surface of the transducer to provide a low reluctance magnetic path with said pole, each member extending substantially across said pole in the direction of a track width, and at a distance from said transducing gap, from an associated magnetic medium and out of contact with said interchannel shields to prevent magnetic coupling therewith, respectively, said members of magnetic material being attached alternatively to poles provided on the opposite sides of said transducer front end surface on consecutive adjacent channels to form an asymmetrical multichannel transducer structure.
Dependencies are inferred from the claim text.