Process for the preparation of magnetic recording disk

Details Process for the preparation of magnetic recording disk Process for the preparation of magnetic recording disk

1988-04-20

1990-08-07

Cashion, Jr., Merrell C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29447, 29448, 29DIG21, 156293, 1563031, B32B 3104, B32B 3118

Patent

active

049465341

ABSTRACT:
A process for the preparation of a magnetic recording disk comprises the steps of providing a magnetic recording layer on a surface of a nonmagnetic support, punching the nonmagnetic support together with the magnetic recording layer into a disk having a circular hole in its central portion, and fitting mechanical members including a center core made of a synthetic resin into the hole of the support. The nonmagnetic support having the magnetic recording layer and at least the center core of the mechanical members are subjected to heat treatment independently prior to fitting the mechanical members including the center core into the hole of the support.

REFERENCES:
patent: 3462817 (1969-08-01), Horsfall
patent: 3599226 (1971-08-01), Lipps
patent: 4014968 (1977-03-01), Simon
patent: 4480282 (1984-10-01), Brock
patent: 4549922 (1985-10-01), Oishi
patent: 4698715 (1987-10-01), Oishi
patent: 4710913 (1987-12-01), Matsushima
patent: 4729805 (1988-03-01), Alexander
patent: 4761874 (1988-08-01), Utsui

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