Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2005-03-29
2005-03-29
Renner, Craig A. (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
06873494
ABSTRACT:
An inductive write head structure incorporating a high moment film in conjunction with at least one pole (e.g., the bottom pole) for use with magnetic storage media and a process for producing the same in which a lift-off photoresist mask is used prior to the deposition of the high moment sputtered film. Following the lift-off process, the high moment film remains on the bottom pole (“P1”) pedestal (in the case of a PDZT type write head) or on the P1itself (in the case of a Stitched Pole write head). The edge of the lift-off sputtered film is then covered by cured photoresist insulation which is placed at a distance away from the air bearing surface (“ABS”). The coverage of insulation at the edge of the sputtered film is desirable in order to avoid forming a topographic step which may have undesired consequences in the subsequent top pole formation processes.
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Chen Yingjian
Dang Xiaozhong
Harrison, Esq. Joshua C.
Hogan & Hartson LLP
Renner Craig A.
Shara, Esq. Milad G.
Western Digital (Fremont) Inc.
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