Printer Self Repair

Capping Mechanism

The Capping mechanism covers the Print Head with the Cap to prevent the nozzle from increasing viscosity when the printer is in stand-by state or when the printer is off.

□ Wiper with the Cap unit

The wiping operation is controlled by the Carriage Unit movement. This operation is usually performed with every CL sequence which is to absorb the ink from the ink cartridge, the ink cavity by the Pump unit. Following figure shows you the mechanism for the wiping operation.

When the Carriage Unit is in the home position, the hook of the Slider Lock Lever is not latched to the dent of the Cap Frame.

In this time, the protrusion of the Cap Slider Lever does not reach the rightmost position of the Cap Frame.

Step 1

Protrusion

Step 1

Protrusion

Capping position (CR home position)

When the Carriage Unit moves to the left side from the Wiper setting position, the Cap Unit is pulled back by the tension force of the Extension Spring 0.788.

In this time, the Cap Unit is automatically set to the wiping position because the hook on the Slider Lock Lever is latched to dent of the Cap Frame. And, the wiping operation is performed according to the Carriage Unit movement.

Step 3

Protrusion of the Carriage Unit

Step 3

Protrusion of the Carriage Unit

Wiping position

Step 2

Latched

Wiper setting position

Latched

Wiper setting position

The Carriage Unit moves to the Wiper setting position on the rightmost position of the Cap Frame with keeping the Cap covered.

In this time, the hook of the Slider Lock Lever is latched to the dent of the Cap Frame.

When the wiping operation is finished and the Carriage unit moves further to the left side, the hook of the Carriage unit hits to the Slider Lock Lever. In this time, the Slider Lock Lever is released and the Cap slider returns to the bottom position completely. (The broken line is the position of the Carriage Unit & the Slider Lock Lever just before being released.)

Figure 2-10. Wiper Mechanism

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