CARTRIDGE ATTACHING MECHANISM

摘要

PURPOSE:To provide a cartridge attaching mechanism which can facilitate the loading/unloading of an option cartridge in a power supply cut-off mode and then inhibits the loading/unloading of the option cartridge in a power supply application mode. CONSTITUTION:A drive shaft 1 revolves by application of a power supply and a cam 2 containing a torque clutch is revolved. Then the cam 2 moves a slider 4 to the right and then moves two stoppers 9 provided on the slider 4 to the right. Then the cam 2 touches a plunger 19 of a solenoid 3 and stops there. The stoppers 9 move to the back of an inserting port cover 13 in a cartridge unloaded state and then move the side face groove of the cartridge in a cartridge loaded state respectively to inhibit the loading/unloading of the cartridge. A one-shot pulse generating circuit operates right after a power supply is cut to give a main power supply to the solenoid 3 via a cut-off/delay circuit. The solenoid 3 attracts the plunger 19 while the main power supply is cut and delayed to cancel the lock state of the plunger 19 to the cam 2. While the cam 2 cancels its lock state to the slider 4. As a result, the slider 4 (stoppers 9) moves to the left by the force of a spiral spring 10 to inhibit the loading/ unloading of the cartridge.