Maintenance Cartridge - Canon imageprograf ipf700 Service Manual

c) Pump
The pump (suction pump) is a tube pump that pressurizes the ink tubes with rotating rollers to generate a
negative pressure for sucking inks.
A single tube is sequentially pressurized by a pair of rotating rollers to control the level of ink suction. The
timing at which the rotating rollers rotate is detected by the pump cam sensor, with the distance of rotation being
controlled by the driving of the purge motor.
Suction pump
Push rollers
To maintenance cartridge.

2.3.2.6 Maintenance Cartridge

2.3.2.6.1 Maintenance cartridge

a) Maintenance cartridge
The maintenance cartridge holds about 1000 mL of used inks (about 867 g: including the evaporation of
moisture from the used inks).
b) Used maintenance cartridge ink detection
Used maintenance cartridge ink detection is monitored with regard to a dot count.
When the used ink reaches 80% of the cartridge capacity, the waning message "Maintenance C Space Check"
is displayed to tell that the maintenance cartridge is nearly full.
Further use of the maintenance cartridge will cause the appearance of the message "Replace Maintenance
Cartridge" to report that the maintenance cartridge is full.
When this error is displayed, the printer assumes that the used ink tank is full, shutting down its operation even
while it is printing until the maintenance cartridge is replaced.
The maintenance cartridge houses EEPROM, so that engine firmware can control the status of the maintenance
cartridge by writing to and reading from the EEPROM content.
Cap
Ink tubes
Purge motor
Cap
Pump unit
Pump encoder
F-2-15
F-2-16
Chapter 2
Pump cam sensor
0013-7525
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