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4.9 Degassing of the printhead
The degassing operation should be done the first time of printhead installation, this operation can
help exhaust the air bubbles in the chamber.
This operation can also be used to deal with the nozzles missing problem.
Shutdown the spray function
Turn off all the ink valves and adjust the pressure to a value of -‐1.1kPa.
Loosen the cap of the air exhaust tube of the printhead, open the inkvalve, and press the ink
prime button till you see a constant ink stream comes out of the tube. Close the ink valve and
then seal the tube with the cap.
Note. The operation must not exceed 3 seconds so as to avoid the generation of bubbles by
emptying the subtank. If the system refill alert occurs, click the “reset” and continue the
exhausting operation when the alert ceases.
Open the ink valve of the degassed head and perform a short purge of the head
Close ink valve again
Execute the degassing on each printhead as the operations described above.
When finishes degassing operation, open all ink valves, and adjust the pressure to a value where
the ink drops are slowly sucked into the heads. Press the prime button till you see the ink comes
out of the nozzles of each printhead.
Use Signracer recommeded lint-‐free towel to wipe up the ink residues on the nozzles surface.
Wipe as the picture below, therefore there is not much pressure on the nozzle surface.
Print a “nozzle test” and check the status of the nozzles
Summary of Contents for 1600 LED
Page 1: ...1 Signracer LED Flatbed Inkjet Printer Operation Manual...
Page 12: ...12 4 3 Electronic panel...
Page 20: ...20 4 Select the communication port 5 Select the print head model...
Page 21: ...21 6 Select the printer model 7 Select DPI...
Page 23: ...23 10 Select additional task 11 Confirm and install...
Page 24: ...24 12 Wait for installation 13 Install the initiations...
Page 25: ...25 14 Click finish to continue 15 Install the driver for PCIE card...
Page 26: ...26 16 Accept 17 Continue...
Page 39: ...39 Reset the value of the zero position in the layout option Illustrated as below...
Page 57: ...Notes...
Page 59: ...5 Channel information of Ricoh Gen5 5 1 Single array carriage set...
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Page 62: ...5 2 Double array carriage set...
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