Flexible media — recent developments from the tribology point of view

Metal Evaporated Media

“…2.24b: increasing the density of surface asperities improves the medium durability (the still frame life directly relates to the number of head traces) but negatively affects the medium CNR. The tape surface roughness and abrasiveness have also to be minimized to limit head wear and head recession which creates additional spacing loss (Osaki, 2000). This is particularly a concern for the use of metal evaporated tape with magnetoresistive read sensors (Hansen and Bhushan, 2006;Kamatani et al, 1999Kamatani et al, , 2005Ozue et al, 1999).…”

“…interaction of the tape edges with the flange of roller guides was identified as a source of debris generation that can contribute to failure (Nagai et al 2000;Osaki, 1998Osaki, , 2000Osaki and Endo, 2005). The interaction of the medium with the recording elements also varies with the strength of the interaction, and therefore, depends on the elements specific geometry and material composition (Osaki, 1996(Osaki, , 2000.…”

“…The interaction of the medium with the recording elements also varies with the strength of the interaction, and therefore, depends on the elements specific geometry and material composition (Osaki, 1996(Osaki, , 2000. Due to the complex tribological interactions, the durability of the tape medium needs to be validated in every system it is designed for.…”

“…Due to the complex tribological interactions, the durability of the tape medium needs to be validated in every system it is designed for. Tribology of metal evaporated media has mainly been considered in helical-scan systems (Osaki, 1996(Osaki, , 2000Osaki and Endo, 2005;Osaki et al, 1990). Recently, the tribology of metal evaporated media has also been evaluated in linear tape systems Bhushan, 2006, 2007;Goldade and Bhushan, 2005;Jubert et al, 2009).…”