Process and device for mechanically removing a layer from the substrate material of a disk-shaped information carrier
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United States of America Patent
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Apr 15, 1997
Grant Date -
N/A
app pub date -
Jul 11, 1994
filing date -
Jul 12, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A foreign substances-containing layer of a disk-shaped information carrier (3) is mechanically removed from the substrate material (13) in order to recover the substrate material (13) by a material removing process which separates the coating containing the foreign substances (18, 19, 20) from the substrate material (13). A device for implementing this process consists of a tool bottom part (1), a receptacle (2) for holding in place the disk-shaped information carrier (3), and a tool top part (7) movable with respect to the tool bottom part (1) in a direction parallel to the surface of the latter and provided with a blade (8) for peeling a layer (9) off the surface of the disk-shaped information carrier (3).
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