Substrate plate for the manufacture of a mold for the production of optical registration carriers and a method for manufacturing same
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United States of America Patent
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Apr 9, 1996
Grant Date -
N/A
app pub date -
Jan 24, 1994
filing date -
Jan 22, 1993
priority date (Note) -
Expired
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Abstract
A substrate plate of plastic material instead of glass for the manufacture of a metal mold for the production of optical registration carriers of plastic material. Polyether imide is a suitable plastic material for forming the substrate plate. A suitable molding process is injection molding, wherein a highly polished mold is used.
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