Clamping plate, cartridge case, information medium, mold,...

Details Clamping plate, cartridge case, information medium, mold,... Clamping plate, cartridge case, information medium, mold,...

2006-08-07

2009-10-27

Cao, Allen T (Department: 2627)

Dynamic optical information storage or retrieval

Optical storage medium structure

Disk hub

Reexamination Certificate

active

07610595

ABSTRACT:
A clamping plate capable of reliably clamping a disk-shaped medium. In the clamping plate, at an imaginary intersecting portion between an imaginary extended surface of a rear surface of an outer peripheral portion of a main body and an imaginary extended surface of a rear surface of an inner peripheral wall of the main body, an annular groove recessed from the imaginary extended surfaces in the directions of the thicknesses of the outer peripheral portion and the inner peripheral wall is formed along an imaginary cross line of the imaginary extended surfaces.

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