Thin-film magnetic circuit board and magnetic head using the same

A thin-film magnetic circuit board used in combination with a head core element including a first and a second magnetic substrate;

• and a magnetic gap formed by a non-magnetic layer interposed between the first and second substrates for bonding said first and second substrates to each other, said thin-film circuit board comprising:
• a substrate formed of a non-magnetic material;
• a connector formed from a magnetic film on one of opposite major surfaces of said non-magnetic substrate, said connector having opposite end portions which protrude from one of the opposite major surfaces of said non-magnetic substrate to form a pair of protrusions;
• wherein, each of the protrusions contacts the corresponding magnetic substrate of the head core element to form a closed magnetic circuit defined by said connector and the magnetic substrates of the head core element;
• a coil formed from an electrically conductive film to provide a circuit pattern on said one major surface of said non-magnetic substrate, said coil having a spiral shape and surrounding said protrusions of said connector;
• and
• a pair of leads which are electrically connected to opposite ends of said circuit pattern formed by said coil.