Damper DX4 Roland / Mimaki / Mutoh — Ref. 6085393800

6085393800 – DX4 ink damper (Assy Ink Damper L 3FAI 4) – Roland / Mimaki / Mutoh

The Assy Ink Damper L 3FAI 4 ink damper is an essential component of the ink supply circuit of large-format printers fitted with a DX4 printhead.

It ensures a steady, controlled delivery of the ink between the supply system and the printhead. This damper integrates an improved-shape O-ring that reinforces the seal at the junction with the DX4 head. This design ensures a stable, continuous ink flow while protecting the head from particles and pressure variations that could cause print defects.

Available under different OEM references depending on the machine brand, it covers a wide range of Roland, Mimaki JV3 SP and Mutoh Valuejet plotters fitted with a DX4 head. It replaces and improves the former Roland references 6085393700 and 7853903500.

Technical specifications

• OEM reference: 6085393800
• Manufacturer: DG Spare Parts
• Part type: Ink damper (DX4 head)
• Roland OEM reference: 6085393800 (replaces 6085393700 and 7853903500)
• Mimaki OEM reference: M006171
• Mutoh OEM references: DG-41079 / DG-40999 / MY-48141
• Compatible head: DX4
• Fitting diameter: 3 mm (large)
• Seal: O-ring with reinforced grip
• Chemical resistance: Solvent and eco-solvent inks
• Filtering: Filters suspended particles in the ink
• Integrated reservoir: Micro buffer tank for continuous ink flow
• Shipping: Shipped ready to install

Compatibility & use

• Mimaki JV3
• Mimaki JV3-75 SP II
• Mimaki JV3-130SP II
• Mutoh Valuejet 16xx
• Roland AJ
• Roland CJ
• Roland FJ
• Roland FP
• Roland LEC
• Roland LEJ
• Roland RS
• Roland SC
• Roland SJ
• Roland SP
• Roland VP
• Roland XC
• Roland XJ

Function

• Regulates the ink pressure between the supply system and the DX4 head
• Filters the micro-particles suspended in the ink before they reach the head
• Ensures a continuous, even ink flow via the integrated micro buffer tank
• Protects the printhead against pressure surges and contamination
• Ensures the seal at the head/ink-circuit junction via the improved O-ring

Signs of wear

• Smudges, streaks or print irregularities on the output
• Recurring missing or clogged nozzles despite cleanings
• Ink leaks at the printhead connection
• Colour density variations during printing
• Error messages linked to the ink pressure or supply circuit

Replacing the damper when worn restores the reliability of the ink circuit and avoids damage to the DX4 printhead, whose replacement cost is far higher.

♻️ DG Spare Parts – European specialist in spare parts for large-format printers and plotters.