Valve Position OFF: Ink channel is closed; ink cannot flow to the print head.
Valve Position INK: Ink channel is open; ink flows to the print head.
Valve Position Flush: Flushing fluid flows to the print head.
Warning:
Before printing, do remember to adjust the handle of manual three-way valve to position INK, so that ink can
flow into heads; otherwise, air may get into heads when they run out of ink.
Everyday after work, make sure the manual three-way valve handles of the areat position OFF.
One Way Valve: To avoid ink from flowing back.
Sub-ink-tanks: It is designed for stable ink supply. Two level sensor is installed in each sub-tank. When the
sensors detect that ink level is low, ink pumps will pump ink from main ink tank to them. Negative pressure is
provided here to keep pressure inside stable to keep ink stays at the surface of nozzle plate. That is to
ensure good printing quality.
Printhead: TCL1818 printer is designed for six printheads printing. Install your printheads onto the carriage
according to the section Installing Ricoh Gen 4 Heads. Then, connect the print heads to the control system.
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