Method for producing magnetic recording medium

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

1993-04-13

1994-01-04

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

427131, 427265, 4273933, 4274342, B05D 512

Patent

active

052758427

ABSTRACT:
A method for producing a magnetic recording medium wherein an undercoating layer is provided before forming a magnetic layer by applying a coating composition onto a surface of a continuously traveling flexible support, excluding widthwise-direction edge portions of the support, and pressing the support to a forward end of a slot of a coating head. At least one part of the undercoating layer is formed by preliminarily applying a high-molecular solution having a glass transition point of higher than the heat treatment temperature onto at least the edge portions of the flexible support to give a larger width to the undercoating layer than the width of the magnetic coating layer.

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