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AssigneeSeagate Technology LLC
InventorsWei H. Yao, Yuh-Jen Cheng, Li-Ping Wang, David S. Kuo, Chiao-Ping Ku, Bruno Marchon
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A magnetic data recording medium substrate has a contact zone and a data zone. The contact zone is textured by forming multiple texturing features, each having a bell-shaped profile resembling a Gaussian curve. The features preferably are formed by pulsed laser energy applied to a glass substrate, or to an aluminum nickel-phosphorous substrate coated with a glass layer. As compared to previous laser texturing approaches, the laser beam is less narrowly focused to provide a beam impingement area with a diameter of at least three microns, forming texturing features with diameters of at least three microns. The texturing features preferably are uniform in height and diameter, and may be symmetrical or have asymmetrical aspects, so long as bell-shaped profiles are present in the direction of travel of the recording medium, relative to transducing heads.
A substrate for a data storage medium comprising a data zone for storing data and a contact zone textured for contact with a data transducing head maintained spaced apart from the data zone by an air bearing during use of the data storage medium, said substrate comprising:
A data storage medium including:
Dependencies are inferred from the claim text.