Abstract: A transparent substrate has an information layer on an entirely flat side, and a centering member on the other side adapted to cooperate with centering means of an apparatus for inscribing and/or reading the disc. The centering member may be glued in place and have an aperture for engagement by an apparatus spindle.

Abstract: A transparent substrate has an information layer on an entirely flat side, and a centering member on the other side adapted to cooperate with a centering device of an apparatus for inscribing and/or reading the disc. The centering member may be glued in place and have an aperture for engagement by an apparatus spindle.

Abstract: A stationary guide plate (11) is formed with two locally intersecting profiled grooves (12, 13), which are profiled in conformity with a kinked path having a first and a second path section which are inclined relative to each other and of which a first groove (12) has a smaller width and a greater depth than a second groove (13). The profiled grooves (12, 13) are engaged by guide members (14, 15) which are connected to the object carrier (22) so as to be movable in the profiled grooves, and which have a transverse dimension corresponding at least substantially to the width of the respective profiled grooves.

Abstract: A printer (1) having a guide (13,15,16) for an insertable cassette (17), which is provided with a data strip (175) displaceable along a printing head (19). In certain arrangements the cassette may also include a transfer strip (177), which could include colored portions. The cassette (17) has an entrance window (167) for a transport roller (65) pivotable in the printer (1) by translation of the cassette (17). During printing, the data strip (175) and the transfer strip (177), if any, are clamped between the printing head (19) on a first cassette side and the transport roller (65) pivoted from a second cassette side located opposite the first cassette side into the entrance window (167). Separate gear wheel trains both driven by the same motor transport the two strips when both are provided.

Abstract: Apparatus for writing and/or reading information in an information surface of a rotating disc by means of a radiation spot (5) includes a one-piece injection-moulded or die-cast frame (11) and a motor unit (57) with a motor shaft (43) which carries a turntable (45) and which is journalled in the frame (11). The device further comprises an optical system with a movable lens system (17), and a lens-system driving device (13) with a movable lens carrier (15).

Abstract: In a record player having a loading mechanism for loading a disk (30), a rectilinearly retractable and extensible drawer (6) is provided, which carries a platform (15) and a pivotable pressure lever (24) with a disk loader (29). The drawer (6) has in side walls (9,10) grooves (14), in which the platform (15) is movable between an upper and a lower position in the direction of height with respect to the drawer, whereby the platform (15) in the lower position is located below the upper side of the turn-table (21). The platform (15) is held during a first part of the sliding-in movement by at least one positioning member (17) in the upper position in the grooves and is pressed during a second part of the sliding-in movement against at least one abutment stop (26), as a result of which it performs a substantially vertical movement with respect to the turn-table (21) in the grooves (14) to the lower position.