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BJC-2000
3.3 Purge Unit
3.3.1 Purge unit functions
1) Capping function
The purge unit's cap is pressed against the face of the print head to prevent the ink
from drying out or leaking.
If print data is not received for over 60 seconds during a printing operation, the
purge unit wipes the print head face. If print data is still not received for a further
60 seconds, the purge unit caps the print head.
Other than during a printing operation, if print data is not received after a certain
period of time (varies between 5 to 20 seconds) the purge unit caps the print head.
2) Cleaning function
To maintain high print quality, the purge unit cleans the print head at the following
times:
• After the AC power cord is connected.
• After the BJ cartridge is replaced.
• After the ink cartridge has been replaced.
• When printing starts after more than 72 hours have passed since the last cleaning
(if a color BJ cartridge is installed, after more than 24 hours have passed for the
first-time cleaning only).
• When the printed dot count exceeds the specified amount.
• When the color BJ cartridge is left at the cartridge replacement position for over 10
minutes.
• When cleaning is executed by button operation.
The cleaning operation includes the wiping of paper bits and ink residue adhering to
the print head's face plate. It also sucks out ink from the print head to refresh the
inside of the nozzles with fresh ink.
TABLE 4-3 INK CONSUMPTION DURING CLEANING (AS A STANDARD)
With a Black BJ Cartridge
During black BJ head replacement
After AC power cord connection
During black BJ cartridge replacement
When printing starts after more than 72 hours since the last cleaning
When dot count exceeds the specified count
Button pressed for cleaning
With a Color BJ Cartridge/ Photo BJ Cartridge
During color BJ head replacement
After AC power cord connection
When printing starts after more than 72 hours since the last cleaning
(also after the first 24 hours as for the initial cleaning)
During ink cartridge replacement
When left at cartridge replacement position for over 10 minutes
When the dot count exceeds the specified count
Button pressed for cleaning
4-17
Part 4: Technical Reference
Approximate Ink
Consumption
0.15g
0.15g
0.15g
0.15g
0.15g
0.15g
Approximate Ink
Consumption
0.3g
0.3g
0.3g
0.6g
0.6g
0.6g
0.3g
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