Disk production apparatus and disk produced by disk...

Details Disk production apparatus and disk produced by disk... Disk production apparatus and disk produced by disk...

2005-09-13

2005-09-13

Thomas, Alexander S. (Department: 1772)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

C425S400000

Reexamination Certificate

active

06942481

ABSTRACT:
A disk production apparatus has a movable-side metal mold and a fixed-side metal mold provided as facing the movable-side metal mold, the fixed-side metal mold having a center hole. Inserted into the center hole is a retainer to attach a stamper on the fixed-side metal mold. The center of an inner diameter of the retainer and the center of an outer diameter of the retainer are eccentric with each other. The retainer may be inserted into a center hole of the movable-side metal mold for attaching the stamper on the movable-side metal mold. A disk has a substrate having a center hole; a first zone formed on the substrate, data being recorded on the first zone; and a second zone formed on the substrate but outside the first zone. Labeled on the second zone is a marker indicating an amount of eccentricity applied to the retainer used in production of the disk by injection molding.

REFERENCES:
patent: 2001-334557 (2001-12-01), None
Translation of Japanese patent document 2001-334557.

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