Method for producing magnetic recording medium

Details Method for producing magnetic recording medium Method for producing magnetic recording medium

1993-02-04

1993-10-05

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

4274343, B05D 512

Patent

active

052503208

ABSTRACT:
A method for producing a magnetic recording medium in which widthwise deviations in thickness of coating caused by widthwise unevenness of the support being coated are suppressed so that the coating thickness is made uniform. An extrusion-type coating head is used for coating, and a magnetic coating composition is continuously extruded from a top end portion of a slit of the coating head onto the surface of the support while the support is running continuously along a back edge surface and a curved doctor edge surface having a curvature thereby to coat the surface of the support with the magnetic coating composition, the method being characterized in that coating is carried out in such manner so that the following condition is satisfied:

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