Molding die apparatus, method for disc substrate, and...

Details Molding die apparatus, method for disc substrate, and... Molding die apparatus, method for disc substrate, and...

2008-07-08

2008-07-08

Thomas, Alexander (Department: 1794)

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

C428S066700, C428S848600, C369S280000

Reexamination Certificate

active

11504140

ABSTRACT:
Preventing a molded disc substrate from generating a separation pattern. To this end, a molding die1includes a pair of stationary die6and movable die7, and an outer circumference ring16for molding an outer circumference end of the disc substrate2. The outer circumference ring16is so mounted as to be movable along forward and backward directions in parallel with a moving direction of the movable die7toward the stationary die6, and has a retaining surface39for retaining the outer circumference of the molded disc substrate2.

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Computer Translation of Japanese Pub. No. 09-123999.

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