Skewed high density magnetic head and method of manufacturing same

Claim 2

In combination, a magnetic read/write transducer for accessing information readable and recordable by relative motion between the transducer and a magnetic medium having a plurality of closely-spaced information indicative tracks, comprising: a fixture, for holding a number of transducer elements, each having an edge in a fixed nontransverse orientation with respect to the relative motion of the transducer and that portion of the medium carrying information tracks; a number of transducer elements, held in said fixture, each including a relatively thin magnetic sheet having a thickness greater than the width of an information track; slots formed in the sheet, one for each information track, extending from the element edge a predetermined distance to an inner point, to provide a magnetic gap defined by the sheet thickness; and electrically conductive means, forming a single turn winding, associated with said sheet at each of the inner points of each slot, the conductive means being wider than the slot, to transduce magnetic and electrical forms of information.

Claim 3

The transducer of claim 1, wherein the slots are narrower than the sheet thickness.

Claim 4

In combination, a high density multi-channel magnetic head capable of accessing a plurality of closely-spaced information tracks on a portion of a magnetic recording medium, comprising: a high permeability magnetic sheet, wider than the portion of the recording medium utilized for information tracks and thicker than the breadth of any information track; a plurality of apertures in said sheet, positioned to each correspond with a different track; a plurality of slots formed in said sheet, each extending from a different aperture to the same edge of the sheet and each narrower than the associated aperture; support means, fixing the sheet across the recording medium, with aforesaid edge adjacent and parallel to the medium surface and at an angle to a line transversely across the information track portion of the medium, to provide access to all the information tracks defining the utilized portion of the medium; and conductive means defining a single winding turn, associated with each aperture, for providing electrical access to the information magnetically recorded on the medium.

Claim 5

In combination, a high density multi-channel magnetic head capable of accessing a plurality of closely-spaced information tracks on a portion of a magnetic recording medium, comprising: a high permeability magnetic sheet, wider than the portion of the recording medium utilized for information tracks and thicker than the breadth of any information track; a plurality of apertures in said sheet, positioned to each correspond with a different track; a plurality of slots formed in said sheet, each extending from a different aperture to the same edge of the sheet and each narrower than the associated aperture; support means, fixing the sheet across the recording medium, with aforesaid edge adjacent and parallel to the medium surface and at an angle to a line transversely across the information track portion of the medium, to provide access to all the information tracks defining the utilized portion of the medium; and conductive means defining a single winding turn, associated with each aperture, for providing electrical access to the information magnetically recorded on the medium.

Claim 6

The head of claim 3, wherein the sheet has a width W and thickness t and is fixed at an angle theta , the portion of the medium utilized for information tracks having a width W cos theta and each track having a wiDth t sin theta .

Claim 7

The head of claim 4, wherein the head width, thickness, and angle and the number n of slots are chosen to make the expression W cos theta - nt sin theta essentially equal to or less than zero.

Claim 8

A high density magnetic recording and reading head, comprising the combination of: a sheet of high-permeability magnetic material of thickness t having a plurality of apertures and slots in the sheet wider than the apertures connecting the apertures to one edge of the sheet; and a mount, supporting the aforesaid edge of the sheet at an angle theta from a reference line, relative motion between said edge and an information bearing portion of a medium placed along said reference line defining a track, for each of n slots, having a width t sin theta .

Claim 9

A high density magnetic recording and reading head, comprising the combination of: a sheet of high-permeability magnetic material of thickness t having a plurality of apertures and slots in the sheet wider than the apertures connecting the apertures to one edge of the sheet; and a mount, supporting the aforesaid edge of the sheet at an angle theta from a reference line, relative motion between said edge and an information bearing portion of a medium placed along said reference line defining a track, for each of n slots, having a width t sin theta .

Claim 10

The head of claim 6, wherein the angle theta is in the range from more than 0* to less than 90*.

Claim 11

The head of claim 6, wherein the sum of the widths n t sin theta of all the tracks defined by said head substantially equals the amount of space across said medium allotted for recording.