Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1987-09-10

1989-06-06

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427128, 428694, 428900, G11B 570

Patent

active

048370835

ABSTRACT:
A magnetic recording medium comprising a plastic base and a magnetic layer formed thereon by applying a dispersion of a ferromagnetic powder in a resin binder, the magnetic layer containing the ferromagnetic powder which has a BET specific surface area of at least 35 m.sup.2 /g and .alpha.-Al2O3 particles having a particle size not exceeding one half the mean particle diameter of the ferromagnetic powder and less than 0.1 .mu.m in diameter, the .alpha.-Al2O3 particles being added in an amount greater than 5% but less than 15% by weight on the basis of the weight of the ferromagnetic powder. The magnetic powder is a metallic magnetic powder containing iron as the major constituent. The .alpha.-Al2O3 particles are cube-shaped.

REFERENCES:
patent: 4109048 (1978-08-01), Dessauer et al.
patent: 4238341 (1980-12-01), Kato et al.
patent: 4328935 (1982-05-01), Steel
patent: 4420408 (1983-12-01), Kajimoto et al.
patent: 4420532 (1983-12-01), Yamaguchi et al.
patent: 4425400 (1984-01-01), Yamaguchi et al.
patent: 4460651 (1984-07-01), Hosaka et al.
patent: 4571362 (1986-02-01), Sato et al.
patent: 4618536 (1986-10-01), Morioka et al.
patent: 4652500 (1987-03-01), Ejiri et al.
patent: 4670337 (1987-06-01), Tokuoka et al.
patent: 4671993 (1987-06-01), Kadokura et al.
patent: 4687703 (1987-08-01), Miyoshi et al.

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-39820