Pressure Before the Printhead
Monitor ink supply status near the printhead inlet and adjust with the supply pump.
FHES / INK SUPPLY FCS
From the Ink Tank to the Printhead,
and Back to the Tank
Manage the complete ink supply/return loop from the tank through the printhead and back to the tank. Pressure feedback before and after the printhead coordinates dual-pump PID; validate multi-orientation results under complete-machine operating conditions.
Based on the FHES FCS Full-Loop Ink Circulation System brochure. The image shows an S series application, not a dedicated FCS product image; check the actual configuration and results for the project.
Complete LoopInk tank, supply pump, printhead and return pump
Two Measurement PointsPressure feedback before and after the printhead
Dual-pump PIDCoordinated ink supply and return adjustment
01 / FULL-LOOP CIRCULATION
Ink Supply and Return Form a Complete Path
From the ink tank, through the supply pump and printhead inlet, then through the printhead return path and return pump back to the tank.
01 / TANKInk Tank and Supply Pump
Establish ink supply conditions at the printhead inlet.
02 / PRINTHEADPressure Measurement Before and After the Printhead
Observe ink-path status through inlet and return-path pressure feedback.
03 / RETURNReturn Pump and Ink Tank
Return ink to the tank along the return path.
FCS: System-Level Full-Loop Circulation
Manage the ink supply/return path from the tank through the printhead and back to the tank, monitoring pressure before and after the printhead during multi-orientation operation.
CCS: Internal Recirculation in Compatible Printheads
The recirculation path enters the compatible printhead's internal flow path; the extent of exchange near the nozzles depends on the printhead structure.
Explore CCS ↗System-level full-loop circulation does not automatically mean ink circulates behind the nozzles; confirm the internal printhead flow path and actual circulation coverage for the compatible model.
02 / DUAL PRESSURE FEEDBACK
Two Pressure Feedback Signals Coordinate Two Pumps
Pressure before the printhead Pin and return-path pressure Pout provide separate feedback, with dual-pump PID coordinating ink supply/return status and pressure differential.
Pressure After the Printhead
Monitor return-side status and adjust the flow path with the return pump.
Coordinated Pressure Differential
When the printhead, tubing or orientation changes, monitor pressure before and after the printhead together with printing status.
Control response varies with pumps, sensors, tubing length, ink and parameter settings; the brochure does not provide a uniform pressure accuracy that can be used directly as an acceptance criterion.
03 / APPLICATIONS
Provide System Capability for Multi-Orientation Printing
Design ink supply/return configurations for side printing, upward printing and moving platforms according to the workpiece and motion path.
01 / ORIENTATIONSide and Upward Printing
Check pressure changes before and after the printhead against its mounting orientation, ink level and tubing arrangement.
02 / MOTIONRobots and Rotating Stations
Check hose movement, trigger timing and printing consistency during acceleration, deceleration, turns, stops and starts.
03 / S SERIESS Series Application Platform
The brochure lists S1–S4 modules and long-throw printing applications; configure according to the specific model.
“360°” is a system design objective stated in the brochure, not a universal guarantee for any orientation. The maximum 50 mm printing distance also depends on the printhead, ink, waveform, speed and substrate, and requires sample validation.
04 / PROJECT VALIDATION
Confirm Ink Supply/Return Configuration with Actual Workpieces
Select the printhead and ink first, then test at the target orientation, motion path and production-line cycle time.
Ink Path and Control
- Printhead internal flow path, supply/return interfaces and ink compatibility
- Measurement points before and after the printhead, target pressure and pressure-differential records
- Hose length, bending and motion range
Printing and Delivery
- Pressure curves during side/upward printing, starts, stops and motion
- Triggering, printing distance, speed, substrate and curing conditions
- Sample clarity, nozzle state and maintenance requirements
APPLICATION TEST / FHES
Explore Project Compatibility
Provide the printhead, ink, target orientation, tubing and cycle time to help check dual-pump control and validate on site.