CARRIAGE UNIT
J001/J003 6-10 SM
6.3.5 INK NEAR END
Each print head has a tank full lever [A]. This lever presses against a spring loaded
bellows in the center of the print head tank. The right side of each tank is
constructed of flexible plastic:
• As ink enters the tank, the pressure of the ink pushes against the side of the tank
and moves the lever away from the side of the print head tank.
• As ink is consumed during printing, the vacuum created by the ink leaving the
tank pulls the lever toward the side of the print head tank.
The tank full sensor [B], mounted above the front guide rail, checks the left and
right positioning of the tank full lever every time the carriage passes below.
When the tank full sensor detects the lever against the side of the tank, the printer
sends a prescribed amount of ink to the tank from the Print cartridge.
The sensor signals the ‘ink near-end’ if the tank full lever does not return to the full
position (away from the side of the tank) within the prescribed time after the printer
requests another fill from the Print cartridge.
After the near-end alert, the printer will continue to print with the ink that remains in
the partially filled tank until the printer issues the ink end alert. (6.3.6)
G707D911.BMP
[A]
[B]
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