Circulation Pump
Organize recirculation actions according to operating status.
FHES / INK SUPPLY CCS
Keep ink flowing through
the printhead's internal flow path
Ink flows through the internal recirculation path of a compatible printhead. The MCU integrates management of the circulation pump, negative pressure, solenoid valves, ink level, ink supply and heating. The brochure states negative-pressure control accuracy of ±0.05 kPa and temperature-control accuracy of ±0.5 °C.
Based on the updated FHES CCS Recirculating Ink Supply System brochure. The image shows the CCS control board; actual results depend on the printhead flow path, ink and site configuration.
Circulation inside the headInk flows through a compatible printhead's flow path
MCUIntegrated control of ink supply and return status
PIDRecirculation negative-pressure and heating control
01 / PRINTHEAD RECIRCULATION
Circulation reaches the printhead's internal flow path
Ink supply, internal printhead recirculation and ink return form a continuous path that keeps the ink near the printhead refreshed.
01 / SUPPLYInk supply and pressure
Establish the ink supply conditions required by the compatible printhead.
02 / PRINTHEADCirculation inside the head
Ink flows through the printhead's internal recirculation path.
03 / RETURNInk return and pressure differential
Coordinate ink supply/return status and recirculation negative pressure.
PCS: Preventing Sedimentation on the Supply Side
Agitation in the primary ink tank and recirculation in the secondary cartridge focus on the ink supply side.
Explore PCS ↗CCS: Local Recirculation Inside the Printhead
Ink flows through the compatible printhead's internal path, focusing on ink renewal near the nozzles.
Internal recirculation paths, flow rates and the extent of ink exchange near the nozzles differ between printhead manufacturers; validate the specific recirculation effect with the compatible printhead and ink.
02 / MCU CONTROL
One Control Core Coordinates Six Types of Status
The circulation pump, negative pressure, solenoid valves, ink level, ink supply and heating work together according to operating status.
Circulation negative pressure
Manage target pressure and feedback, and coordinate ink supply and return.
Solenoid Valves
Switch the corresponding ink-path actions according to operating conditions.
Ink Level
Ink level information is used for ink supply and exception alerts.
Ink Supply
Manage ink replenishment using ink level and system status.
Heating
Use PID temperature control to manage the operating temperature range and overshoot.
03 / CONTROL DATA
Two Closed Loops: Pressure and Temperature
The brochure provides CCS performance indicators. Define the measurement points, ink, environment and statistical window during project acceptance.
Circulation negative-pressure control accuracy±0.05 kPa
Control pressure changes in the recirculating system around the setpoint.
Heating-temperature control accuracy±0.5 ℃
PID regulates heating output to maintain a stable operating temperature range.
These are two CCS performance indicators stated in the updated brochure. Printing quality must still be verified against feed/return pressure, startup and stabilization, the actual ink and temperature.
04 / APPLICATIONS
For White Ink and Continuous Printing
Internal flow in the printhead helps reduce localized sedimentation of highly pigmented ink, trapped bubbles and the risks associated with restarting after printing stops.
01 / PIGMENTHighly pigmented white ink
Continuously refresh ink in the flow path to reduce opportunities for localized deposits in stagnant areas.
02 / PRODUCTIONContinuous production line
Recirculation, pressure and temperature control support long production runs, shift changes and intermittent production.
03 / HIGH THROWLong-Throw Printing Applications
The brochure lists applications at distances up to 50 mm; validate with the specified printhead, drop size, ink and operating conditions.
7 × 24 hours is a design target for continuous production lines, not a maintenance-free promise; check bubbles and nozzle condition as required by the equipment.
05 / PROJECT VALIDATION
Select the Printhead and Ink First, Then Verify Recirculation
Use actual materials and production-line conditions to confirm the flow path, accuracy, temperature control, nozzle condition and target printing distance.
Printheads and ink
- Printhead internal recirculation path, flow rate and compatible interfaces
- Ink viscosity, pigment content, sedimentation characteristics and operating temperature
- Nozzle condition, bubbles and maintenance intervals
On-site inspection and acceptance
- Measurement points and test conditions for pressure and temperature indicators
- Restart after printing stops, extended operation and first-item quality
- Target distance, print content, line speed and sample clarity
APPLICATION TEST / FHES
Explore Project Compatibility
Provide the compatible printhead, ink, target distance and production-line cycle time to help verify recirculation, temperature control and printing results.