| 摘要 |
PURPOSE:To eliminate the need for an electric locking operation machanism by holding a magnetic sheet pack locked or unlocking it by mechanical associating operation on the basis of the movement relation between a lock lever and a cam member relating to the loading or unloading of a holder which holds the magnetic sheet pack. CONSTITUTION:When the magnetic sheet pack 2 is inserted into the holder 3 in the unloading state, a lock lever 15 contacts the side piece of the magnetic sheet pack 2 and rotates slightly, and a lock piece 15a engages the recessed part 7 of the magnetic sheet pack 2, which is locked automatically. When the holder 3 is rotated and opened returning from the loading position to the unloading position, the engagement piece 15b of the lock lever 15 engages the 1st guide part 17a of the cam member 17. Consequently, the lock lever 15 rotates against a torsion spring 16 and the lock piece 15a is disengages from the recessed part 7 to unlock the magnetic sheet pack 2, which is discharged. |
