Multiple transducer magnetic head

Claim 1

In a low frequency multiple channel magnetic transducing head for reading magnetic inked characteRs comprising a stack of similar closely spaced apart thin flat magnetic transducing core elements each forming a closed magnetic circuit except for the provision of a front gap and so mounted by non-magnetic material to exhibit a general truncated formation including a pair of sloping walls coverging toward one another but terminating short of convergence to form a narrow flat surface therebetween and to locate the gaps in the core elements in the flat surface in alignment with one another for sensing magnetic inked characters on a record medium relatively movable closely past the head, the improvement comprising: magnetic means disposed along said aligned gaps to decrease the reluctance of said gaps, non-magnetic means insulating said magnetic means from said sloping walls, and a thin layer of electrically conductive material contactually overlying each of said pair of sloping walls formed by the stack of magnetic core elements and covering substantially the surface area of each of the sloping walls, said electrically conductive layers terminating flush with the plane of the flat surface leaving exposed the aligned front gaps of the magnetic core elements, said electrically conductive layers responding to cross-coupling lines of magnetic flux between adjacent magnetic core elements of the stack and passing through the conductive layer for generating eddy currents in the layers which in turn generate magnetic flux lines operating in opposition to said cross-coupling lines of magnetic flux thereby substantially reducing interchannel crosstalk.