| 摘要 |
<p>A loading mechanism moves a cartridge tray (2) for accommodating a cartridge (1) between an eject position at which the cartridge (1) is mountable/demountable into/from the cartridge tray (2) and a mount position at which a reel of the cartridge is engaged with cartridge reel rotating means of the magnetic tape apparatus, wherein the cartridge tray is engaged with a loader drive plate having a loader drive roller (5-4) engaged with a loader drive cam groove (6-1) containing radial and circumferential direction portions (6-1a, 6-1b) in a loader drive gear (6). A threading mechanism moves a leader block (9) engageable with a leader pin affixed to the tip portion of a magnetic tape accommodated in the cartridge between an unload position in the neighbourhood of the cartridge tray (2) located at the mount position and a load position in a notch of the core portion of the reel (31) of the magnetic tape apparatus to which the leader block (9) is fitted, wherein the leader block (9) is engaged with an arm member (7, 8) having a threader drive roller (1-1) engaged with a threader drive cam groove (11-1) containing radial and circumferential direction portions (11-1a, 11-1b) formed in a threader drive gear (11) engaged with the loader drive gear (6). At the unload position, the leader block (9) is located at a retracted position at which the leader block is retracted from the cartridge (1) in the cartridge tray (2) located at the mount position, and a leader pin captured position at which the leader block (9) is engaged with the leader pin affixed to the tip portion of the magnetic tape in the cartridge. The loading mechanism and the threading mechanism are driven by a single driving force generating source, wherein, as the loader drive gear (6) is rotated, the cartridge tray (2) is moved between the eject and mount positions, the leader block (9) is rotated by 90 degrees between the retracted and the leader pin captured positions and moved between the unload and load positions by means of a threading cam groove (10-1). <IMAGE></p> |
