Patent ID: 7042679

Claim:
A magnetic head device that has, on a base plate, a magnetic head to one of read out and write information by moving relative to a magnetic recording medium, said magnetic head device comprising: terminal pads formed on a side surface of said magnetic head, said magnetic head being installed on an edge portion of one surface side of said base plate thereby forming a magnetic head installation portion; and a flexible wiring board that includes a connection terminal portion connected to each of the terminal pads of said magnetic head, a wiring extension portion extended from said connection terminal portion, and an extension terminal portion extended from said wiring extension portion, and that is formed by covering a plurality of wiring lines with a resin layer, wherein said connection terminal portion is disposed on said one surface of said base plate adjacently to the terminal pads of the magnetic head on said base plate, said wiring extension portion is folded back toward the other surface side of the base plate along the magnetic head installation portion, said extension terminal portion is mounted on the other surface side of said base plate, said connection terminal portion and each of said terminal pads of said magnetic head are electrically interconnected, an end portion on the side of said magnetic head, of said connection terminal portion of said flexible wiring board is bent in a direction approaching said one surface of said base plate along a thickness direction of said connection terminal portion, on the one surface of said base plate, and irregular broken surfaces caused by forcible tearing are provided on both sides of a cross section of said flexible wiring board on said one surface of said base plate, and sharp broken surfaces are provided adjacent to said terminal connection portion on both sides of the cross section of said flexible wiring board.