Canon BJC-6000 Technical Information PDF herunterladen (Seite 97)

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BJC-6000

Part 4: Technical Reference

3.3 Purge Unit

3.3.1 Function of the purge unit

The purge unit keeps the BJ cartridge nozzles in good working condition to ensure

high printing quality. The unit is designed to provide both capping and cleaning

functions.

a) Capping

The capping function presses the purge unit's cap against the print head face to

prevent the nozzles from drying and becoming contaminated. During capping, a

cam is actuated to lock the carriage in place. During printing, capping starts 30

seconds or so after data stops. When printing is not performed, capping takes place

after a certain period of time (20 minutes in paper feeding mode, or 30 seconds in

other conditions) has elapsed since the last data was received, or when the

POWER

button is used to switch the printer off.

b) Cleaning

The cleaning function includes the wiping action to wipe paper fibers or waste ink off

the head face plate, and the suction action to suck out ink from the head to refresh

the insides of nozzles with new ink, and the maintenance jet action to discharge the

ink from the nozzles into the maintenance jet splash guard for removing bubbles

from the head or dust around the outlet. The cleaning mechanism becomes

activated in the following cases to help maintain high quality printing.

Printer Status

Reference Ink Consumption (mg)

Black Color Photo

Power ON Initial power on (1 time only) 0.49 0.75 0.75

Switched on for the 1st time since connecting to AC (capped)

0.19 0.27 0.27

Switched on for the 1st time since connecting to AC (not capped)

0.34 0.53 0.53

72 hours or more elapsed since previous cleaning

0.19 0.27 0.27

Cleaning 0.19 0.27 0.27

Refreshing 0.34 0.53 0.53

Changing BJ cartridge/Ink tank 0.34 0.53 0.53

72 hours or more elapsed since previous cleaning 0.19 0.27 0.27

Before printing banner paper 0.19 0.27 0.27

(Specified number or more of dots or time elapsed since

previous cleaning)

Maintenance Jet Splash Guard

Purge Unit

Figure 4-19 Purge Unit

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 ... 173 174

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