Optical disk manufacturing process
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United States of America Patent
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-
Oct 23, 1990
Grant Date -
N/A
app pub date -
Feb 2, 1989
filing date -
Feb 2, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for manufacture of a second surface optically recordable disk is disclosed. A reflective sheet of aluminum, flow process produced by precipitation of a layer of aluminum from gasified triisobutyl aluminum onto a layer of molten indium, is mated with a polymer substratum sheet. In completion of the process, an optically active layer which is applied over the reflective layer is embossed with an optically transparent polycarbonate, protective cover, the mating surface of which, may be, pregrooved and coded with data relative to address and sector codes. Covers with bonded laminae are then successively severed from the lamina sheet to yield independent second surface optically recordable media.
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