Recording media with mechanically patterned landing zone
View Patent ↗A method of manufacturing a magnetic recording medium, comprises steps of providing a non-magnetic substrate for a magnetic medium, the substrate including at least one major surface having a contact start/stop (CSS) or landing zone and a data zone; and forming a pattern of recesses in the substrate surface in said CSS or landing zone by embossing utilizing a stamper having a surface including a negative image pattern of said pattern of recesses. Embodiments of the invention include magnetic media comprising a non-magnetic substrate including at least one major surface having a contact start/stop (CSS) or landing zone and a data zone, said substrate surface in said CSS or landing zone comprising an embossed pattern of recesses. In addition, the data zone of the substrate surface may include an embossed servo pattern formed simultaneously with the embossed pattern of recesses formed in the landing zone.
1. A stamper for embossing at least one pattern of recesses in a surface of a substrate for a magnetic recording medium, said substrate surface including spaced-apart landing and data zones, said stamper comprising:
(a) a main body including a surface; and
(b) a first patterning unit for embossing a pattern of sinusoidally-shaped recesses in said landing zone of said substrate surface,
wherein the surface of the main body is Al/NiP.
2. The stamper as in claim 1 , further comprising:
(c) a second patterning unit for simultaneously embossing a servo pattern in said data zone of said substrate surface.
3. A stamper for embossing at least one pattern of recesses in a surface of a substrate for a magnetic recording medium, the stamper comprising:
a stamping surface including a pattern of sinusoidally-shaped protrusions,
wherein said pattern of sinusoidally-shaped protrusions is a negative image of the pattern of recesses to be embossed in the surface of the substrate, and
said stamping surface is Al/NiP.
4. The stamper according to claim 3 , wherein said stamping surface further comprises a hydrophobic polymer.
5. The stamper according to claim 3 , wherein said pattern of sinusoidally-shaped protrusions comprises a plurality of spaced apart peaks and valleys, wherein a peak-to-peak spacing of adjacent peaks is in the range from about 0.1 to about 10 μm and a depth of each valley is in the range from about 10 to about 200 Å.