Oliff & Berridge, PLC
Magnetic head for perpendicular magnetic recording having a main pole, a shield and a coil core part setback away from the medium facing surface a specified distance
A magnetic head includes: a main pole; a coil; a first shield having an end face that is located in a medium facing surface at a position forward of an end face of the main pole along a direction of travel of a recording medium; and a first return path section disposed forward of the main pole along the direction of travel of the recording medium. The first return path section connects part of the main pole away from the medium facing surface to the first shield so that a first space is defined. The coil includes a first portion having a planar spiral shape and wound around a core part of the first return path section. The first portion includes first and second coil elements that each extend through the first space. No part of the coil other than the first and second coil elements exists in the first space.
Sae Magnetics (H.K.) Ltd. Headway Technologies, Inc.
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Kazuki Hiroyuki Yoshitaka Atsushi
Sato Ito Sasaki Iijima