Methods for recording servo information

Details Methods for recording servo information Methods for recording servo information

2006-08-28

2010-11-16

Kim, Paul D (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603130, C029S603140, C029S603160, C029S603180, C216S062000, C216S065000, C216S066000, C360S121000, C360S122000, C360S317000, C451S005000, C451S041000

Reexamination Certificate

active

07832084

ABSTRACT:
A method of recording servo information includes writing servo information in a data storage medium using a compound magnetic recording head. The compound magnetic recording head has a substrate including first and second magnetically permeable substrate portions and a substantially non-magnetic member interposed between the first and second magnetically permeable substrate portions. A magnetically permeable layer is provided over the first and second magnetically permeable substrate portions of the substrate and includes first and second writing gap features associated with the first and second substrate portions. The writing gap features are formed using a patterned mask layer over the magnetically permeable layer, wherein the patterned mask layer comprises first and second patterned gap features corresponding to the first and second writing gap features.

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