Part 4: Technical Reference |
Head Stoppers
Heater Board
Aluminum Plate
BJ Head
Black Head | |
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Flexible Cable | Photo Head |
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Head Holder
Figure 4-18 Structure of BC-62e Photo BJ Head Unit
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
The electrode for the
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
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.