Magnetic head with deposited core and signal conductor

Claim 2

A magnetic head element to provide a transducing action with a movable storage medium adjacent thereto, said head comprising: an insulating member; a signal conductor comprising a thin film of a deposited conducting material supported on said insulating member; a magnetic core comprising a first thin film of magnetic material deposited on and supported by one surface of said insulating member beneath said signal conductor and a second thin film of magnetic material deposited on said first film and said signal conductor and extended over said signal conductor with both said thin films extending past and joined beyond the edges of said signal conductor, said second film having a gap therethrough that is accurately located with reference to said one surface of said insulating member and above said signal conductor whereby said deposited core substantially encircles said signal conductor but for said gap in said second film, whereby reading or writing of information on said magnetic medium will result through an interaction between the magnetic field across said air gap and said storage medium with a concurrent change in current flow occurring in said signal conductor; and a control conductor positioned in magnetic field association with said core whereby passage of an electric current through the control conductor will cause a cross field saturating at least a portion of said core to prevent a change in the magnetic flux across said gap when there is a change in the current flow in said signal conductor during the writing process; and to produce a change in the magnetic flux through the core memory during the reading process.

Claim 3

A magnetic head element as defined in claim 1 wherein said control conductor is comprised of a thin film of conductor material deposited on the side of said insulating member disposed away from said magnetic core.

Claim 4

A magnetic head element as defined in claim 1 including an insulating layer positioned between said signal conductor and said first and second thin films.

Claim 5

The magnetic head element as set forth in claim 1, wherein said second film and said gap each has a thickness of approximately 80 microinches.

Claim 6

A magnetic head to provide a transducing action with a movable storage medium adjacent thereto, said head comprising; an insulating member; a plurality of deposited thin film signal conductors supported on one side of said insulating member and extended generally in the same direction; a plurality of magnetic cores positioned along each signal conductor, each of said cores comprising a first thin film of magnetic material deposited on and supported by one surface of said insulating member beneath one of said signal conductors and a second thin film of magnetic material deposited on said first film and said signal conductor and extended oveR said signal conductor with both said thin films extending past and joined beyond the edges of said signal conductor, said second film having a gap therethrough that is accurately located with reference to said one surface of said insulating member and above said signal conductor whereby said deposited core substantially encircles said conductor; whereby reading and writing of information on said magnetic medium will result through an interaction between a change in the magnetic field across said gap and the storage medium with a concurrent change in current flow in said signal conductor; and a plurality of control conductors each positioned in magnetic field association with one or more of said cores whereby the passage of an electric current through the control signal conductor will result in a magnetic field intercepting said core and causing a saturating flux extending in a direction other than across said gap to prevent a change in a magnetic field across the gap when a change in current flow through the signal conductor is effected during the writing process; and to produce a change in the magnetic flux through the core during the reading process.

Claim 7

A magnetic head to provide a transducing action with a movable storage medium adjacent thereto, said head comprising; an insulating member; a plurality of deposited thin film signal conductors supported on one side of said insulating member and extended generally in the same direction; a plurality of magnetic cores positioned along each signal conductor, each of said cores comprising a first thin film of magnetic material deposited on and supported by one surface of said insulating member beneath one of said signal conductors and a second thin film of magnetic material deposited on said first film and said signal conductor and extended oveR said signal conductor with both said thin films extending past and joined beyond the edges of said signal conductor, said second film having a gap therethrough that is accurately located with reference to said one surface of said insulating member and above said signal conductor whereby said deposited core substantially encircles said conductor; whereby reading and writing of information on said magnetic medium will result through an interaction between a change in the magnetic field across said gap and the storage medium with a concurrent change in current flow in said signal conductor; and a plurality of control conductors each positioned in magnetic field association with one or more of said cores whereby the passage of an electric current through the control signal conductor will result in a magnetic field intercepting said core and causing a saturating flux extending in a direction other than across said gap to prevent a change in a magnetic field across the gap when a change in current flow through the signal conductor is effected during the writing process; and to produce a change in the magnetic flux through the core during the reading process.

Claim 8

A magnetic head as defined in claim 5 wherein said cores are positioned in a matrix configuration each at the intersection of a control conductor and a signal conductor.

Claim 9

A magnetic head as defined in claim 5 wherein said control conductors comprise a thin film conductor deposited on the side of said insulating member disposed away from said magnetic core.

Claim 10

A magnetic head as defined in claim 5 including means to provide a rapidly changing current through a selected control conductor whereby data stored on the storage medium adjacent the selected core can be read by virtue of the rapid data flux change in said core, caused by said rapidly changing control current and said storage medium.

Claim 11

The magnetic head as set forth in claim 5, wherein said second film and said gap each has a thickness of approximately 80 microinches.

Claim 12

A magnetic head to provide a transducing action with a movable storage medium adjacent thereto, said head comprising: an insulating member; a plurality of deposited thin film signal conductors supported on one side of said insulating member and extended generally in the same direction; and a plurality of magnetic cores positioned along each signal conductor, each of said cores comprising a first thin film of magnetic material deposited on and supported by one surface of said insulating member beneath one of said signal conductors and a second thin film of magnetic material deposited on said first film and said signal conductor and extended over said signal conductor with both said thin films extending past and joined beyond the edges of said signal conductor, said second film having a gap therethrough that is accurately located with reference to said one surface of said insulating member and above said signal conductor whereby said deposited core substantially encircles said conductor, whereby reading and writing of information on said magnetic medium will result through an interaction between a change in the magnetic field across said gap and the storage medium with a concurrent change in current flow in said signal conductor.

Claim 13

A magnetic head to provide a transducing action with a movable storage medium adjacent thereto, said head comprising: an insulating member; a plurality of deposited thin film signal conductors supported on one side of said insulating member and extended generally in the same direction; and a plurality of magnetic cores positioned along each signal conductor, each of said cores comprising a first thin film of magnetic material deposited on and supported by one surface of said insulating member beneath one of said signal conductors and a second thin film of magnetic material deposited on said first film and said signal conductor and extended over said signal conductor with both said thin films extending past and joined beyond the edges of said signal conductor, said second film having a gap therethrough that is accurately located with reference to said one surface of said insulating member and above said signal conductor whereby said deposited core substantially encircles said conductor, whereby reading and writing of information on said magnetic medium will result through an interaction between a change in the magnetic field across said gap and the storage medium with a concurrent change in current flow in said signal conductor.

Claim 16

The method of forming a magnetic head as defined in claim 11 wherein said first and second film members are comprised of a nickel-iron alloy.