Method for producing a magnetic recording medium

Details Method for producing a magnetic recording medium Method for producing a magnetic recording medium

1990-04-20

1991-07-16

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

427131, 428695, 428900, H01F 1002

Patent

active

050324284

ABSTRACT:
A method for producing a magnetic recording medium is disclosed, comprising coating on a nonmagnetic support a magnetic coating composition for forming a lower magnetic layer and a magnetic coating composition for forming an upper magnetic layer using a wet-on-wet coating method, thereby forming plural magnetic layers, followed by drying, and then conducting heat treatment thereof, wherein the magnetic coating composition for the upper magnetic layer contains ferromagnetic alloy particles are ferromagnetic particles and does not contain a lubricating agent which has polar groups and has a molecular weight of 3000 or less, the magnetic coating composition for the lower magnetic layer contains ferromagnetic iron oxide particles as ferromagnetic particles, a lubricating agent having polar groups and having a molecular weight of 3000 or less, and a curing agent, the lubricating agent as well as the curing agent in the lower magnetic layer being diffused into the upper magnetic layer by the heat treatment.

Affiliated with

Also associated with

Rating

Method for producing a 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 Method for producing a magnetic recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing a magnetic recording medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-130498