Patent ID: 6916521
Filing Date: 2005-07-12
Classification: B32B,C08G,G11B,Y10T

Abstract:
1. A cleaning medium in the form of a tape constructed to clean a head of a magnetic recording apparatus as it slides along the head, comprising: a nonmagnetic support having provided thereon lower coating layer mainly containing a nonmagnetic inorganic powder and a binder, and a cleaning layer constructed to remove debris from a recording head as it slides along the head containing at least a ferromagnetic inorganic powder and a binder provided on the lower coating layer, wherein the thickness of the cleaning layer is from 0.05 to 1.0 μm, the thickness of the lower coating layer is from 0.2 to 5.0 μm, the thickness of the support is from 2.0 to 10 μm, the total thickness of the cleaning medium is from 4.0 to 15 μm, the surface of the cleaning layer has from 5 to 80 protrusions having a height of from 35 to 100 nm per 900 μm 2 and the cleaning layer contains fatty acid amide, fatty acid and fatty acid ester.