Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2006-03-10
2009-10-27
Klimowicz, William J (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S125270, C360S125290, C360S125020
Reexamination Certificate
active
07609479
ABSTRACT:
A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field for writing data on a recording medium by using a perpendicular magnetic recording system. A shield incorporates: a first layer having an end face located in a region of the medium facing surface forward of the end face of the pole layer along the direction of travel of the recording medium; a second layer disposed in a region sandwiching the pole layer with the first layer; a first coupling portion coupling the first layer to the second layer without touching the pole layer; and a second coupling portion coupling the pole layer to the second layer and located farther from the medium facing surface than the first coupling portion.
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Guan Lijie
Itoh Hiroyuki
Li Dong-Hong
Sasaki Yoshitaka
Smyth Joseph
Headway Technologies Inc.
Klimowicz William J
Oliff & Berridg,e PLC
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