PROCESS AND DEVICE FOR MECHANICALLY REMOVING A LAYER FROM THE SUBSTRATE MATERIAL OF A DISK-SHAPED INFORMATION CARRIER

摘要

PCT No. PCT/DE92/00803 Sec. 371 Date Jul. 11, 1994 Sec. 102(e) Date Jul. 11, 1994 PCT Filed Sep. 15, 1992 PCT Pub. No. WO94/06608 PCT Pub. Date Mar. 1, 1994A 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).