Invention Grant
US08168311B2 Magnetic recording disk having pre-patterned surface features and planarized surface
有权
具有预图案化表面特征和平坦化表面的磁记录盘
- Patent Title: Magnetic recording disk having pre-patterned surface features and planarized surface
- Patent Title (中): 具有预图案化表面特征和平坦化表面的磁记录盘
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Application No.: US12753683Application Date: 2010-04-02
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Publication No.: US08168311B2Publication Date: 2012-05-01
- Inventor: Charles Mathew Mate , Franck Dreyfus Rose , Kurt Allan Rubin , Steven Gary Schmid , Tushar Keshubhai Suther
- Applicant: Charles Mathew Mate , Franck Dreyfus Rose , Kurt Allan Rubin , Steven Gary Schmid , Tushar Keshubhai Suther
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agent Thomas R. Berthold
- Main IPC: G11B5/66
- IPC: G11B5/66

Abstract:
A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recording layer, and at least one of the overcoat layers functions as a stop layer for terminating a chemical-mechanical polishing (CMP) process that substantially planarizes the disk. All of the layers of the multilayered overcoat are located above the lands, but none of the overcoat layers, or a number of layers less than the number of layers over the lands, is located above the recesses.
Public/Granted literature
- US20110244273A1 MAGNETIC RECORDING DISK HAVING PRE-PATTERNED SURFACE FEATURES AND PLANARIZED SURFACE Public/Granted day:2011-10-06
Information query
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