Method for assembling a disc-shaped recording medium

Details Method for assembling a disc-shaped recording medium Method for assembling a disc-shaped recording medium

1995-08-23

1998-01-20

Mayes, Melvin C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563798, 156538, 156556, 156580, 360135, 396290, B32B 3112, B32B 3128

Patent

active

057097640

ABSTRACT:
A method and apparatus for assembling a hub for magnetically chucking an optical disc on a disc table of a recording/reproducing apparatus under a force of magnetic attraction includes an assembly guide member having a first guide portion movable in a direction perpendicular to one major surface of the disc substrate so as to be engaged in a center opening in the disc substrate, and a second guide portion formed integrally with the first guide portion so that its center axis is aligned with the distal end of the first guide portion. The second guide portion is fitted in a spindle shaft opening in the hub. The assembly guide member its first guide portion fitted in the center opening for positioning the disc substrate and the second guide portion being engaged in this state in the spindle shaft opening for centering the disc substrate with respect to the hub. The disc substrate and the hub may be assembled together in the correctly centered state via the assembly guide member by a simplified operation with minimum cost, thus assuring reduction in investment cost and improved productivity. In addition, the centering between the disc substrate and the hub, which usually required time-consuming laborious operation, may be achieved easily by employing the assembly guide member, so that the assembly process may be simplified thus lowering the cost of the disc-shaped recording medium.

REFERENCES:
patent: 4549922 (1985-10-01), Oishi et al.
patent: 4687536 (1987-08-01), Hiramatsu et al.
patent: 4704181 (1987-11-01), Kubo
patent: 4788615 (1988-11-01), Oishi
patent: 4836890 (1989-06-01), Murata et al.
patent: 4971648 (1990-11-01), Doering
patent: 5080736 (1992-01-01), Matsui

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