Invention Grant
- Patent Title: Energy-assisted magnetic recording head with protective cap
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Application No.: US17349698Application Date: 2021-06-16
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Publication No.: US11605397B2Publication Date: 2023-03-14
- Inventor: John Pierre Herber , Mark David Alnas Alias , Aileen Ticzon Jara , Reimar Azupardo
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA San Jose
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Loza & Loza, LLP
- Agent Gabriel Fitch
- Main IPC: G11B5/255
- IPC: G11B5/255 ; G11B5/235 ; G11B5/127 ; G11B5/31 ; G11B5/40 ; G11B5/39 ; G11B5/60 ; G11B5/00

Abstract:
Aspects of the present disclosure provide various magnetic recording slider structures and fabrication methods that can reduce head overcoat (HOC) thickness without significantly reducing the lifetime and reliability of a slider by using a protective cap placed on preselected locations on the outermost surface or HOC of the slider. A slider includes a writer comprising an energy-assisted recording element. The writer is configured to store information on a magnetic medium using the energy-assisted recording element. The slider includes a head overcoat (HOC) layer providing an outermost media facing surface. The slider further includes a protective cap positioned on the HOC layer to at least partially cover the energy-assisted recording element, the protective cap including a preselected shape configured to protect the energy-assisted recording element.
Public/Granted literature
- US20210407535A1 ENERGY-ASSISTED MAGNETIC RECORDING HEAD WITH PROTECTIVE CAP Public/Granted day:2021-12-30
Information query
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