Intermec ColorCoder V4 Service Manual page 52

2.3 Ink Supply System, cont'd.
2.3:A Outline, cont'd.
BJ Head
Restoration tub unit
Ink cartridge
Ink tank
Intermec ColorCoder V4 – Service Manual Ed. 1
Outline of Operation, cont'd.
Operation of Printing Mode
During printing, the open/close latch of the sub-tank is opened and
the pressure/release cam is released, so that the suction pump and
pressure pump are stopped and released. When the pressure of the
ink inside the BJ head and the tubing slightly goes down because of
ink ejection, the ink is replenished to the BJ head from the sub-tank
by means of a capillary tube phenomenon of the BJ head nozzles.
T ube
station
Air buffer
Pressure cam
home position
Needle block
Pump retainer
Recovery pump
Figure 2-35
Error Detection
In the ink supply system. the following types of errors are detected.
• No ink cartridge error: The presence or absence of the ink car-
• Empty ink error :
• Ink overflow error:
Chapter 2
Pump motor
M
Cam
pressure
release
clutch
sensor
Suction
clutch
Suction
pump
Pump
retainer
Pressure
Pressure
clutch
pump
One way
clutch
Recovery pump
home position
sensor
tridge is checked for the ink room.
"CHECK CART." takes place, when no
ink-cartridge in the ink room.
The amount of the ink remained is checked
for the sub-tank. The error is detected at
the time when the ink supply operation is
completed. "Empty ink error" takes place
when the ink-remaining-quantity-detec-
tion sensor attached to the sub-tank does
sense no ink at the time when the ink
supply operation is completed.
"26 SERVICEMAN CALL" takes place,
when the ink leaks inside the printer and
reaches the ink leak sensor.
Operation and Timing
Breather
unit
Outlet
Release value
Inlet
SL
Latch lever
(Down)
Filter unit
Sub tank
Latch
solenoid
(Pull)
51