MAGNETIC RECORDING MEDIUM
First Claim
1. A magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support, whereina number of protrusions equal to or greater than 10 nm in height on the magnetic layer surface, as measured by an atomic force microscope, ranges from 50 to 500/1,600 μ
- m2,the binder comprises a polyurethane resin with a weight average molecular weight ranging from 100,000 to 200,000, andthe magnetic layer further comprises a carbonic ester having a molecular weight ranging from 360 to 460.
2 Assignments
0 Petitions
Accused Products
Abstract
The magnetic recording medium comprises a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support. In the magnetic recording medium, a number of protrusions equal to or greater than 10 nm in height on the magnetic layer surface, as measured by an atomic force microscope, ranges from 50 to 500/1,600 μm2, the binder comprises a polyurethane resin with a weight average molecular weight ranging from 100,000 to 200,000, and the magnetic layer further comprises a carbonic ester having a molecular weight ranging from 360 to 460.
-
Citations
7 Claims
-
1. A magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support, wherein
a number of protrusions equal to or greater than 10 nm in height on the magnetic layer surface, as measured by an atomic force microscope, ranges from 50 to 500/1,600 μ - m2,
the binder comprises a polyurethane resin with a weight average molecular weight ranging from 100,000 to 200,000, and the magnetic layer further comprises a carbonic ester having a molecular weight ranging from 360 to 460. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- m2,
Specification