Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1994-05-10

1997-04-01

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428694B, 428694BU, 428694BB, 428694BR, 428694BN, 428900, G11B 566, G11B 5702

Patent

active

056163983

ABSTRACT:
A magnetic recording medium includes a non-magnetic base film, and a magnetic layer on one surface thereof and a back coat layer on the other surface thereof. The back coat layer contains two kinds of carbon blacks varying in the average particle diameter, and a binder containing two kinds of copolymers. These two copolymers comprise vinyl chloride, alkylcarboxylic acid vinyl ester and vinyl alcohol, one being a copolymer A having an average polymerization degree of 300 to 600, and the other a copolymer B having an average polymerization degree of 200 to 800. This makes it possible to achieve a magnetic recording medium having a back coat layer, which is excellent in surface properties and electromagnetic characteristics, and has high running stability and durability.

REFERENCES:
patent: 4612244 (1986-09-01), Kaneda et al.
patent: 5147720 (1992-09-01), Kawakami

Affiliated with

Also associated with

Rating

Magnetic recording medium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-537514