Magnetic head

Claim 2

A magnetic head comprising: a first magnetic core made of material having high magnetic permeability and providing a first sliding surface for a tape; a coil wound on said first magnetic core; and at least one second magnetic core mounted adjacent said first core and made of material having high magnetic permeability, said second core being formed with a protrusion providing a second sliding surface for a tape, which defines a common sliding tape surface with said first sliding surface provided by said first core, and a stepped recess extending from said protrusion to a terminal region, one end of said coil wound on said first core being intermediate said sliding surfaces and said terminal region.

Claim 3

A magnetic head according to claim 1, wherein said terminal region of said recess is located no farther from said one end of said coil than the axial distance from said one end to the center of said coil.

Claim 4

A magnetic head according to claim 2, wherein at least a portion of the surface defining said recess extends parallel to said sliding surfaces.

Claim 5

A magnetic head according to claim 2, wherein at least a portion of the surface defining said recess is slanted with respect to said sliding surfaces.

Claim 6

A magnetic head according to claim 1, wherein a void defined by said stepped recess and said protrusion in said second core is filled with a non-magnetic block.

Claim 7

A magnetic head comprising: a first magnetic core made of material having high magnetic permeability and formed with a stepped protrusion defining a first sliding surface for a tape; a coil wound on said first magnetic core; and at least one second magnetic core mounted adjacent said first core and made of material having high magnetic permeability, said second core being formed with a stepped protrusion defining a second sliding surface for a tape, which defines a common sliding tape surface with said first sliding surface defined by said first core, and a stepped recess extending from said second sliding surface to a terminal region, one end of said coil wound on said first core being intermediate said sliding surface and said terminal region.

Claim 8

A magnetic head comprising: a first magnetic core made of material having high magnetic permeability and formed with a stepped protrusion defining a first sliding surface for a tape; a coil wound on said first magnetic core; and at least one second magnetic core mounted adjacent said first core and made of material having high magnetic permeability, said second core being formed with a stepped protrusion defining a second sliding surface for a tape, which defines a common sliding tape surface with said first sliding surface defined by said first core, and a stepped recess extending from said second sliding surface to a terminal region, one end of said coil wound on said first core being intermediate said sliding surface and said terminal region.

Claim 9

A magnetic head according to claim 6, wherein said terminal region of said recess is located no farther from said one end of said coil than the axial distance from said one end to the center of said coil.

Claim 10

A magnetic head according to claim 7, wherein at least a portion of the surface defining said recess extends parallel to said sliding surfaces.

Claim 11

A magnetic head according to claim 7, wherein at least a portion of the surface defining said recess is slanted with respect to said sliding surfaces.

Claim 12

A magnetic head according to claim 6, wherein a void defined by said protrusion on said first core and said stepped protrusion and said recess on said second core is filled with a non-magnetic block.

Claim 13

A magnetic head comprising: a first magnetic core made of material having high magnetic permeability and formed with a stepped protrusion defining a first sliding surface for a tape; a coil wound on said first magnetic core; a plurality of second magnetic cores each mounted adjacent a different side of said first core and made of a material having high magnetic permeability, each of said second cores being formed with a stepped protrusion defining a second sliding surface for a tape, which defines a common sliding tape surface with said first sliding surface defined by said first core, and a stepped recess extending from said second sliding surface to a terminal region, one end of said coil wound on said first core being intermediate said sliding surfaces and said terminal regions; and a block made of non-magnetic material defining a U-shaped face and filling a void defined by said protrusion on said first core and said stepped protrusions and said recesses on said second cores.

Claim 14

A magnetic head comprising: a first magnetic core made of material having high magnetic permeability and formed with a stepped protrusion defining a first sliding surface for a tape; a coil wound on said first magnetic core; a plurality of second magnetic cores each mounted adjacent a different side of said first core and made of a material having high magnetic permeability, each of said second cores being formed with a stepped protrusion defining a second sliding surface for a tape, which defines a common sliding tape surface with said first sliding surface defined by said first core, and a stepped recess extending from said second sliding surface to a terminal region, one end of said coil wound on said first core being intermediate said sliding surfaces and said terminal regions; and a block made of non-magnetic material defining a U-shaped face and filling a void defined by said protrusion on said first core and said stepped protrusions and said recesses on said second cores.

Claim 15

A magnetic head according to claim 11, wherein said terminal regions of said recesses are located no farther from said one end of said coil than the axial distance from said one end to the center of said coil.

Claim 16

A magnetic head according to claim 12, wherein at least a portion of the surface defining each of said recesses extends parallel to said sliding surfaces.

Claim 17

A magnetic head according to claim 12, wherein at least a portion of the surface defining each of said recesses is slanted with respect to said sliding surfaces.

Claim 18

A magnetic head comprising: a first magnetic core of material having high magnetic permeability and formed with a stepped protrusion defining a first sliding surface for a tape and a recess extending from said first sliding surface to a first terminal region; and at least one second magnetic core mounted adjacent said first core and made of material having high magnetic permeability, said second core being formed with a stepped protrusion defining a second sliding surface for a tape, which defines a common sliding tape surface with said first sliding surface defined by said first core, and a stepped recess extending from said second sliding surface to a second terminal region, said first terminal region being intermediate said sliding surfaces and said second terminal region.

Claim 19

A magnetic head comprising: a first magnetic core of material having high magnetic permeability and formed with a stepped protrusion defining a first sliding surface for a tape and a recess extending from said first sliding surface to a first terminal region; and at least one second magnetic core mounted adjacent said first core and made of material having high magnetic permeability, said second core being formed with a stepped protrusion defining a second sliding surface for a tape, which defines a common sliding tape surface with said first sliding surface defined by said first core, and a stepped recess extending from said second sliding surface to a second terminal region, said first terminal region being intermediate said sliding surfaces and said second terminal region.

Claim 20

A magnetic head according to claim 15, wherein a void defined by said stepped protrusion on said first core and said protrusion and said recess on said second core is filled with a non-magnetic block.

Claim 21

A magnetic head comprising: a first magnetic core made of material having high magnetic permeability and formed with a sliding surface for a tape; a coil wound on said first core; and a pair of second magnetic cores each mounted adjacent said first core and made of material having high magnetic permeability, each of said second cores being formed with a recess therein, permitting a side face of said core to be exposed through each of said second cores.

Claim 22

A magnetic head comprising: a first magnetic core made of material having high magnetic permeability and formed with a sliding surface for a tape; a coil wound on said first core; and a pair of second magnetic cores each mounted adjacent said first core and made of material having high magnetic permeability, each of said second cores being formed with a recess therein, permitting a side face of said core to be exposed through each of said second cores.

Claim 23

A magnetic head according to claim 17, wherein a void defined at least in part by said recesses is filled with a non-magnetic block.