Magnetic recording medium and a method of fabricating the same

#1. Field of the Invention

#The present invention relates to a magnetic recording medium having a magnetic layer consisting of magnetic metal thin films and a method of fabricating the same and, more particularly, to such a magnetic recording medium suitable for use on digital video tape recorders (VTRs).

#2. Description of the Prior Art

#The above and other objects, features and advantages of the present invention will become more apparent from the following description taken in connection with the accompanying drawings, in which:

#FIG. 1 is a schematic sectional view of a magnetic recording medium in accordance with a first embodiment of the present invention;

#FIG. 2 is a schematic sectional view of a modification of the magnetic recording medium of FIG. 1;

#The present invention will be described hereinafter in connection with the accompanying drawings and tables showing experimental results.

#In a first embodiment of the present invention, a magnetic recording medium suitable for use on a digital VTR is comprised of a nonmagnetic support, a magnetic metal thin film, and a protective film formed of a corrosion-resistant metal.

#A sample magnetic recording medium was fabricated by vacuum evaporation. A major surface of a polyethylene terephthalate (PET) film, i.e., a base film, 10 .mu.m in thickness was coated with an emulsion containing an acrylic ester latex as a principal constituent to form minute projections of acrylic ester latex particles on the major surface of the film. The center line average height Ra of the major surface of the base film was 0.0015 .mu.m and the density of the minute projections was 5.times.10.sup.6 mm.sup.2.