Invention Application
US20070230046A1 Write head design and method for reducing adjacent track interference in at very narrow track widths
有权
用于在非常窄的轨道宽度上减少相邻轨道干扰的写头设计和方法
- Patent Title: Write head design and method for reducing adjacent track interference in at very narrow track widths
- Patent Title (中): 用于在非常窄的轨道宽度上减少相邻轨道干扰的写头设计和方法
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Application No.: US11391942Application Date: 2006-03-28
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Publication No.: US20070230046A1Publication Date: 2007-10-04
- Inventor: Quang Le , Jui-Lung Li
- Applicant: Quang Le , Jui-Lung Li
- Assignee: HITACHI GLOBAL STORAGE TECHNOLOGIES
- Current Assignee: HITACHI GLOBAL STORAGE TECHNOLOGIES
- Main IPC: G11B5/147
- IPC: G11B5/147

Abstract:
A perpendicular write head having a wrap around trailing shield for reducing stray field writing and adjacent track interference. The trailing shield is notched, having an un-notched portion directly behind (trailing) the write pole and first and second notched portions that extend laterally to either side. The un-notched portion of the trailing shield is located adjacent to the trailing edge of the write pole and is separated from the trailing edge of the write pole by a trailing shield notch. The notched portions are separated from the trailing edge of the write gap by a notch depth, measured along the trailing direction, the notch depth as measured in the trailing direction being larger than the trailing shield distance. The notch depth as measured in the trailing direction is preferably 25-50 nm larger than the trailing shield gap distance.
Public/Granted literature
- US07969684B2 Write head design and method for reducing adjacent track interference at very narrow track widths Public/Granted day:2011-06-28
Information query
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