Magnetic recording medium
AssigneeFuji Photo Film Co., Ltd.
InventorsKoji Naoe, Kiyomi Ejiri
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Abstract
The present invention aims to provide a magnetic recording medium for digital recording/reproducing systems having a small bit area, i.e. a short recording wavelength and a narrow track width, which is a particulate magnetic recording medium showing good electromagnetic characteristics. A magnetic recording medium comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder provided in this order on a nonmagnetic substrate wherein said magnetic layer has an average thickness of 0.01-0.1 μm and the ratio of the area of magnetic recording defects generated upon magnetic development after recording at the shortest recording wavelength to the total magnetic recording area is 0.2-20%.
Claims18
A magnetic recording medium comprising a nonmagnetic layer comprising a nonmagnetic powder and a binder and a magnetic layer comprising a ferromagnetic powder and a binder provided in this order on a nonmagnetic substrate wherein said magnetic layer has an average thickness of 0.01-0.1 μm and a ratio of a magnetic recording defects area to a total magnetic recording area is in the range of from 0.2 to 20% in a case recording is made at the shortest wavelength in a recording system.
Dependencies are inferred from the claim text.