Oliff & Berridge, PLC
Magnetic head for perpendicular magnetic recording capable of producing a write magnetic field of sufficient magnitude from the main pole while reducing the length of a magnetic path that connects the write shield and the main pole
A magnetic head includes a coil, a main pole, a write shield, first and second yoke layers, and first and second coupling parts. The first yoke layer is located on the trailing side relative to the main pole whereas the second yoke layer is located on the leading side relative to the main pole. The first coupling part couples the main pole and the first yoke layer to each other. The second coupling part couples the first yoke layer and the second yoke layer to each other. The first coupling part includes a plurality of first magnetic path portions, and the second coupling part includes a plurality of second magnetic path portions. The coil includes one winding portion extending to pass around the first and second magnetic path portions alternately in a zigzag manner.
SAE Magnetics (H.K.) Ltd. Headway Technologies, Inc.
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G11B G11B G11B
inventional inventional inventional
Hironori Kazuki Hiroyuki Shigeki Yoshitaka Tatsuya
Araki Sato Ito Tanemura Sasaki Shimizu