Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1996-11-08
1998-10-27
Resan, Stevan A.
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
428216, 428328, 428330, 428331, 4284735, 4284744, 428480, 428694BB, 428192, 428900, G11B 568
Patent
active
058275991
ABSTRACT:
In the present invention, the anti-scrapability of the back layer of a magnetic recording medium is improved to reduce the frequency of occurrence of powder fall onto the surface of the magnetic layer and clogging between the magnetic head and the surface of the magnetic layer. As a result, a magnetic recording medium which is extremely less susceptible to dropout can be provided. A novel tape-shaped magnetic recording medium is provided which is obtained by longitudinally slitting a nonmagnetic support having on one side thereof a magnetic layer comprising a ferromagnetic powder dispersed in a binder and on the other side a back layer, wherein the edge face of said back layer doesn't protrude from the vertical line tangent to the highest protrusion on the slit section of said nonmagnetic support.
REFERENCES:
patent: 4451531 (1984-05-01), Isobe et al.
patent: 4684572 (1987-08-01), Yasufuku et al.
patent: 5164243 (1992-11-01), Kanazawa et al.
patent: 5419961 (1995-05-01), Kobayashi et al.
Asada Nobuyoshi
Kobayashi Nobuyuki
Murao Naoto
Nakamigawa Jun-ichi
Takahashi Masatoshi
Fuji Photo Film Co. , Ltd.
Resan Stevan A.
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