Glass blank disc centering device

Details Glass blank disc centering device Glass blank disc centering device

1995-02-17

1996-12-10

Wolff, John H.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 1704

Patent

active

055838456

ABSTRACT:
A glass blank disc centering device for use in an optical disc glass blank disc exposure apparatus so centering a glass blank disc that the center of the glass blank disc coincides with the rotational center of a turntable has a simple and low-cost construction and enables centering to be carried out rapidly and with high precision without rotating the turntable. A centering device 20 is so constituted that the pivoting of link arms 22, 23 and 24 about pivot shafts 21a, 21b and 21c causes guide rollers 27, 28 and 29 to all move in the same direction and through the same distance with respect to the rotational center of a turntable 16 and abut with the outer circumferential periphery of a glass blank disc placed on the turntable 16.

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