DFX-8500
2.1.5 Ribbon Feed and Tractor Select Mechanisms
The RF motor supplies power to both the ribbon feed and tractor select mechanisms. The rotation of the RF motor pinion swings the ribbon feed select gear like a pendulum, using the lever axis as a support point. The rotation of the RF motor is transmitted after the gears are engaged. When the RF motor pinion gear rotates counterclockwise, the motor rotates the ribbon feed mechanism; when it rotates clockwise, the motor rotates the tractor select mechanism.
‰Ribbon feed mechanism :
Figure 2-11 shows the ribbon feed mechanism. The ribbon is fed in only one direction. Counterclockwise rotation of the RF motor is transmitted to the ribbon feed gear through the ribbon feed select gear and ribbon feed transmission gear. The ribbon feed drive gear engages the winding roller on the ribbon cartridge to feed the ribbon.
Winding Roller
| Ribbon Cartridge |
RF Select Gear | RF Drive Gear |
RF Transmission Gear
RF Motor
Figure 2-11. Ribbon Feed Mechanism
Rev. B |
