Magnetic recording medium containing carbon black having specifi

Details Magnetic recording medium containing carbon black having specifi Magnetic recording medium containing carbon black having specifi

Filed on

1992-03-27

Date issued

1994-01-04

Examiner

Thibodeau, Paul J.

Patent Class

Stock material or miscellaneous articles

SubClass

Web or sheet containing structurally defined element or...

SubSubClass

Including a second component containing structurally defined...

Other Related Categories

252 6251, 252 6255, 252 6256, 428694BN, 428900, B32B 516

Type

Patent

Status

active

Patent number

052758796

Description

ABSTRACT:
A magnetic recording medium having excellent durability and containing carbon black having a mean particle diameter of 25 to 130 nm, a BET specific surface area of 30 to 80 m.sup.2 /g and an oil absorption of 300 to 500 ml/100 g which is incorporated into a magnetic layer of a magnetic recording medium.

REFERENCES:
patent: 4988562 (1991-01-01), Ryoke et al.
patent: 5026598 (1991-06-01), Koyama et al.
patent: 5089331 (1992-02-01), Ryoke et al.

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