Cleaning video tape magnetic recording medium

Details Cleaning video tape magnetic recording medium Cleaning video tape magnetic recording medium

1997-05-27

1999-11-16

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428328, 428694SL, 428694BR, 428695BB, 428900, G11B 5708

Patent

active

059854090

ABSTRACT:
A cleaning tape having a cleaning effect for a magnetic head and an excellent picture quality and enabling the head cleaning state to be comprehended more reliably. The cleaning tape 1 includes a non-magnetic substrate 2 on which a magnetic paint mainly composed of magnetic powders and a binder is coated to form a magnetic layer 3. The Young's modulus in the longitudinal direction is 6000 to 10000 N/mm.sup.2, the residual magnetic flux density (Br) of the uppermost layer of the magnetic layer is not lower than 200 mT, the coercivity of the uppermost layer of the magnetic layer 3 is not lower than 127 kA/m and the centerline mean roughness of the surface of the magnetic layer (Ra) is 8 to 16 nm. The magnetic powders of the cleaning tape 1 are Fe--Co based alloy powders having a mean long-axis length of 0.06 to 0.20 .mu.m and containing 6 to 30 atm % of Co, 1 to 6 atm % of Y and 10 to 15 atm % of Al based on the amount of Fe, with the centerline mean roughness (Ra) of the surface of the magnetic layer 3 being 8 to 16 nm.

REFERENCES:
patent: 5196265 (1993-03-01), Ryoke et al.
patent: 5591535 (1997-01-01), Hisano et al.
patent: 5652040 (1997-07-01), Yamada et al.
patent: 5700563 (1997-12-01), Goto et al.

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