Operation Manual

BC-62e Photo
3) Description of parts
BJ Print Head (black head, ink optimizer head, color head, and photo head)
The heater board and aluminum plate are connected to the flexible cable.
Flexible Cable
The signal contacts are connected to the heater board by printed pattern wiring.
The contacts are in contact with the signal contacts on the carriage, and are used for
the input and output of print signals and sensor signals between the printer and BJ
print head (heater board).
Heater Board
The heater board has a built-in drive circuit, and is set against the ink room of the
head holder and the nozzles.
The electrode for the ink-out detector is located at the ink room.
The heater is aligned with the rows of nozzles against the nozzles.
Aluminum Plate
The aluminum plate supports the heater board and flexible cable.
Head Holder
The head holder supports the BJ print head.
The ink room stores the inks that are supplied to the nozzles. The ink-out detection
pulse is applied from the heater board electrode.
The nozzles are formed by aligning the ink ejection grooves with the heater array on
the heater board.
Head Stopper
The head stopper attaches the BJ print head to the head holder.
The heater board uses semiconductor technology, in which the heaters
and ICs, etc., of the drive circuit are mounted on a silicon plate.
When the heater drive starts, the ink in the nozzles gets hot, causing the
formation of many bubbles. These finally form one bubble which, as it
heats up, forces the ink to be ejected from the nozzle. Even when the
heater is stopped, the residual heat causes bubbles to continue to form
and ink to be ejected from the nozzle tips. The nozzle is replenished with
ink after the ink has been ejected.
Part 4: Technical Reference
BJC-7100
4-20
Black Head
BJ Head
Head Stoppers
Heater Board
Aluminum Plate
Flexible Cable
Head Holder
Photo Head
Ink-eject Directions
Figure 4-18 Structure of BC-62e Photo BJ Head Unit