Process for manufacturing optical disks by pressing
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United States of America Patent
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Apr 21, 1987
Grant Date -
N/A
app pub date -
Jul 2, 1984
filing date -
Jul 4, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides a process for manufacturing optical disks by pressing and disks obtained by such a process, for improving the inherent flatness of the optical disk of the thick type, obtained by a process of pressing between a recorded master and another master, recorded or not depending on whether it is a question of a single or double side disk, this latter being formed from a stack of at least two thin sheets of thermoformable material subjected to a pressure-temperature cycle after which bonding together of the sheets and duplication of the information from the masters for information recording are obtained.
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