Surface smoothing apparatus for magnetic recording medium
AssigneeFuji Photo Film Co., Ltd.
InventorToshio Kawamata
Life of this patent
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Abstract
A smoothing apparatus which includes at least one set of two rolls at least one of which is a metal roll, and a high-frequency dielectric heater positioned prior to the rolls. A magnetic recording medium is first heated by the high-frequency dielectric heater and then pressed between the rolls to smooth the surface of the magnetic layer of the magnetic recording medium.
Claims3
An apparatus for smoothing the surface of a flexible magnetic recording medium, said apparatus comprising at least one set of two rolls one of said two rolls being a metal roll, said metal roll being highly planished, and the other of said two rolls being a resilient roll;
- a high-frequency dielectric heater provided prior to said two rolls;
- and a temperature regulator for controlling the surface temperature of said rolls, whereby the magnetic recording medium is first passed through said high-frequency dielectric heater and then passed through and pressed between said rolls.
Dependencies are inferred from the claim text.