
3.2 Ink Tank Unit
3.2.1 Structure of ink tank unit
a) Ink tank
The ink tanks contain ink (approx. 130 ml) for each color.
The amount of ink is stored in the EEPROM mounted on the ink tank.
The remaining ink level in the ink tank is detected using a dot count based on the
EEPROM information.
When the electrodes mounted to the hollow needle detect that there is no electrical
current, a message appears on the display indicating that the ink is nearly empty. If
the dot count reaches the prescribed value from this state, the ink tank is
considered to be empty.
b) Ink port
The hollow needle enters the ink port (covered by a rubber plug) when the ink tank
lever of the printer is pressed down to the ink tank fixing position, and this
establishes an ink passage between the printer and ink tank.
c) Air passage
The open hollow needle enters the air passage (covered by a rubber plug) when the
ink tank lever of the printer is pressed down to the ink tank fixing position, and the
internal pressure of the ink tank is opened so that the internal pressure is
maintained at a fixed level.
d) Notches for preventing incorrect installation
The ink tanks have notches for preventing incorrect installation. The wrong ink
tanks cannot be inserted and set because of these notches.
The ink tank lever can be lowered only when the ink tank has been installed in the
set position, and the ink supply will not start unless the ink tank lever is lowered.
Part 4: Technical Reference
W6200
4-16
Ink tank
Notches for preventing
incorrect installation
Air passage
Ink port
EEPROM
Notches for preventing
incorrect installation
Figure 4-9 Ink Tank
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