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Maintenance Cartridge; Air Flow - Canon WS8400 Service Manual

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2.3.2.6 Maintenance Cartridge

2.3.2.6.1 Maintenance cartridge
a) Maintenance cartridge
The maintenance cartridge can hold up to approximately 1200 ml (approx. 1200g) of waste ink (including moisture evaporation in the waste ink).
b) Detection of waste ink in maintenance cartridge
The quantity of the waste ink in the maintenance cartridge is measured by counting dots.
When about 960 ml (about 960 g) of waste ink has been collected in the maintenance cartridge, a warning message "MTCart Full Soon" appears to indicate
that the maintenance cartridge is nearly full.
Printing can be continued even if the warning message appears.
When about 1200 ml (about 1200 g) of waste ink has been collected in the maintenance cartridge, an error message "Replace MT-Cart." appears to indicate
that the maintenance cartridge is full.
When the printer judges the maintenance cartridge as being full of waste ink, it stops printing immediately.
The printer will not operate unless the maintenance cartridge is replaced with a new one.
MEMO:
- This printer has an EEPROM in the maintenance cartridge and the maintenance cartridge status is controlled by the engine firmware which reads and
writes the content of that EEPROM. Therefore, the counter information need not be initialized when the maintenance cartridge is replaced.
- The ink discharge rate from the ink tubes and subbuffer resulting from execution of the Move Printer command in the Main menu is counted during the
initial filling suction.
Ink discharge rate occurring from "Move Printer" menu: Approx. 38 g per color
- A maximum of 300 pages can be printed (A1 size, 18% duty for each color) from the moment the warning message appears to the moment the error
message appears.

2.3.2.7 Air Flow

2.3.2.7.1 Air flow
Ink mist that floats inside the printer or splashes from the paper during printing is collected by the air flow inside the printer into the mist fan unit.
The mist fans at the rear of the printer create an air current that carries the ink mist to the mist fan unit.
Maintenance cartridge
F-2-20
Chapter 2
0009-1516
0009-1519
2-19

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