Canon fax basic 2000 서비스 매뉴얼

RECORDING SECTION

4–56

4.12 Purge Unit

The purge unit performs cleaning operation.

The purpose of cleaning is to eliminate defective printing caused by faulty

ejection discharge of ink from the BJ cartridge. Cleaning involves the fol-

lowing four operations:

• Capping operation

• Pumping operation

• Wiping operation

• Maintenance jet operation

Cleaning is performed automatically at the following times:

• When the BJ cartridge is replaced

• When a fixed amount of time has elapsed since the previous cleaning

before the power is turned ON and before printing

• When the ink discharge count has reached the preset count during

printing

Manual cleaning initiated by the user is also possible.

Fig. 4-64   Purge Unit

Rubber cap

Wiper

Maintenance jet absorber

Purge drive gear

Control pin

Wiper control
claw