Kli

Figure 2-15. Pump Operation

Figure 2-15. Pump Operation

There are two pump rollers in the pump unit, and drive power is supplied from the paper feed motor via the pump drive gear (D/E gear), which is moved by the carriage. In the pump unit, the transmission gear supplies both the black and color pulleys, which are each rotated by the movement of the other.

2.2.8 Cap Mechanism

The cap mechanism prevents the printhead nozzles from drying and keeps bubbles from forming inside the nozzles while the printer is not in use. The printer performs the capping operation automatically when it is not printing. If the printer power is turned off during printing or ink system operations, capping is performed and then turn off. (The power switch uses a secondary circuit that allows this operation to be performed.) This printer has two caps: one for the black printhead and one for the color printhead.

Color Cartridge (Option)

Black Printhead

Carriage

Cap 2

Cap Holder

Cap 2

Cap Holder

Air Valve

Right Side Frame

Figure 2-16. Cap Mechanism 2.2.9 Wiping Mechanism

Air Valve

Valve Spring

Right Side Frame

Figure 2-16. Cap Mechanism 2.2.9 Wiping Mechanism

The wiping mechanism cleans the surface of the printhead when the printer is in the ink system sequence. When the paper feed drive motor rotates CCW (backward), power from the motor (via the clutch unit*and gears) is transmitted to the head cleaner (wiper) drive gear. The head cleaner moves across the carriage unit's path. When the motor rotates CW (forward), the head cleaner moves toward the front to remove itself from the carriage unit's path. Both the black and color printheads are cleaned by this wiper.

Gear Train

/Carriage Llnrt Carriage Switch Lever

Head Cleaner

Head Cleaner Lever

Carriage Unit

Head Cleaner Lever

Disengage Mechanism

Gear Train

Pump Gear / Clutch Wiping Mechanism

Figure 2-17. Wiping Mechanism

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