Apparatus for the production of a magnetic recording medium

Details Apparatus for the production of a magnetic recording medium Apparatus for the production of a magnetic recording medium

1995-06-01

1997-12-16

Lamb, Brenda A.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

427548, B05C 302

Patent

active

056980337

ABSTRACT:
In an extrusion coater having at least two coating slots (8, 8'), the central line between the coating slots is arranged perpendicular to the plane of the substrate (1) and the terminating edge (15) of the separator (16) between the two coating slots is a downward-sloping surface. Opposite the extruder orifice and behind the substrate is the edge (5) of a magnet (2) which draws the magnetizable layers out of the coater outlet orifice (3), the edge (5) being arranged at the height of the common outlet orifice of the coating slots (8, 8'). By means of this arrangement, a uniform coating is achieved even in the case of very thin double layers and even at high coating speeds.

REFERENCES:
patent: 2761791 (1956-09-01), Russell
patent: 3681138 (1972-08-01), Ankenbrand et al.
patent: 3928679 (1975-12-01), Jackson et al.
patent: 4469782 (1984-09-01), Ishiwata et al.
patent: 4883691 (1989-11-01), McIntye
patent: 5099786 (1992-03-01), Shibata et al.
patent: 5206056 (1993-04-01), Shibata et al.

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