The DX4/DX5 Large Damper 3mm is a high-quality compatible solvent-resistant ink damper for Epson DX4 and DX5-based eco-solvent and mild solvent wide-format printers from Roland, Mimaki, Mutoh, and Chinese-branded platforms requiring 3mm tube fittings. Corresponding to Roland part 6085393800, Mutoh parts DG-41079/DG-40999/MY-48141, and Mimaki part M006171, this large-connector damper features a large internal metallic mesh filter, precision O-ring on the outlet side, and improves printer performance by preventing ink starvation during high-speed printing. It is a compatible (non-OEM) generic replacement. Large damper (3mm) — confirm your printer's tube fitting size before ordering. Two damper sizes exist for the DX4/DX5 platform. This listing is the large damper with a 3mm OD connector — correct for Roland SJ/SP/VP/XC/LEC series, Mutoh VJ-1604, Mimaki JV3-250SP, and most Chinese DX5 grand-format printers. A small damper with a 2mm fitting exists for other DX4/DX5 printers (Mimaki JV3/JV4/JV22, Mutoh RJ-900, older Roland FJ/SJ series). Check your printer's existing damper connector size before ordering. Product Details Specification Detail Type Compatible (non-OEM) generic replacement ink damper Roland OEM reference 6085393800 (same as OEM Assy Ink Damper L 3FAI 4) Mutoh OEM references DG-41079 / DG-40999 / MY-48141 Mimaki OEM reference M006171 Compatible printheads Epson DX4 / DX5 Fitting size Large — 3mm OD connector Filter Large internal metallic mesh — solvent-resistant, high-flow Seal Precision O-ring on outlet side (DX4/DX5 printhead interface) Ink compatibility Eco-solvent / mild solvent Replacement interval Every 3–6 months in production; at every printhead installation Small vs Large DX4/DX5 Damper — Which Do You Need? Damper Fitting Primary Use Small DX4/DX5 (2mm) 2mm ID / OD 3.3mm Mimaki JV3/JV4/JV22, Mutoh RJ-900/Rockhopper, older Roland FJ/SJ series Large DX4/DX5 (this listing) 3mm OD connector Roland SJ-1000/SP/VP/XC/LEC, Mutoh VJ-1604, Mimaki JV3-250SP, Chinese DX5 platforms Compatible Printers Roland (SJ / SP / VP / XC / XJ / RS / LEC / LEJ / FP Series) • Roland FP-740 • Roland LEC-300 / LEC-540 / LEJ-640 • Roland RS-540 / RS-640 • Roland SC-545ex • Roland SJ-645ex / SJ-745ex / SJ-1000 / SJ-1045ex • Roland SP-300i / SP-540i • Roland VP-300 / VP-300i / VP-540 / VP-540i • Roland XC-540 / XC-540MT • Roland XJ-540 / XJ-640 / XJ-740 Mutoh ValueJet DX5 Series • Mutoh Valuejet 1604 / 1604W Mimaki (JV3-250SP / JV3-160SP) • Mimaki JV3-160SP / JV3-250SP Chinese Grand-Format DX5 Platforms • Allwin E-320 • Galaxy UD-1612LC/W / UD-1812LA/LC / UD-2112LA/LC / UD-2512LA/LC / BY-1801B • MeiTu MT-E1802S / MT-StarJet 5.0 / 7701 / 7702 / 7703 / W7701 series • PrismaJet GE 1802 DS/DSII/S/SII • Robustelli Monna Lisa 160/180/320 series • Rodin 1804 • Smart Color FT1800 • Sunfiner • Taimes WER ES160 / ES1802 / ES2502 / ES3202 • Wit-Color / Xunfei ME1300/ME1600/ME900 • Asbru Saga 1600 Other Chinese DX5 grand-format printers requiring 3mm fittings are also compatible. Contact us with your printer model to confirm before ordering. Roland 6085393800 — OEM and Compatible Versions The Roland part number corresponding to this large 3mm damper is 6085393800 — the same number as the genuine Roland "Assy, Ink Damper L 3FAI 4" OEM assembly for the SJ/SP/VP/XC platform (stocked separately on our site as a genuine Roland OEM part). This listing is the compatible/generic version of that assembly — same physical compatibility at a lower price for routine maintenance cycles. If you require the genuine Roland OEM part for warranty service or critical production applications, see our separate Roland SJ-1000 Assy Ink Damper L 3FAI 4 (6085393800) listing. Large Mesh Filter — Why It Matters for High-Speed Printing The large internal metallic mesh filter in this damper is specifically designed for high-flow applications. At the carriage speeds of Roland SJ-1000, Mutoh VJ-1604, and Chinese DX5 grand-format printers, ink demand peaks rapidly on each stroke. A fine-mesh damper that provides excellent filtration can become a flow bottleneck, causing ink starvation that manifests as banding at speed. This large-mesh design prioritises flow rate while still filtering macro-particles — the correct specification for production eco-solvent printers requiring maximum throughput without starvation artefacts. Signs Your DX4/DX5 Dampers Need Replacing • Banding or nozzle row loss on specific colour channels — ink starvation from a clogged or restricted damper • Air bubbles visible in the damper body or ink tubes — membrane failure allowing air ingestion • Ink draining back into the supply system — air leak through the damper • Nozzle drop-out returning rapidly after cleaning cycles • Ink leaking at the damper connections — O-ring seal failure DX4/DX5 Printhead Service Checklist • Ink dampers (this listing) — replace full set at every printhead installation; every 3–6 months in production • Head data cables — 2× 21-pin FFC cables per DX4 head (Roland SJ/SP/VP/XC); 2× 31-pin cables per DX5 head (Mutoh VJ-1604, Chinese DX5) • Capping station — replace cap top at every head swap • Wiper blade — replace with capping station Why Buy from Digiprint USA • Compatible DX4/DX5 large 3mm damper — high-flow large mesh for production eco-solvent speeds • Covers Roland SJ/SP/VP/XC/LEC, Mutoh VJ-1604, Mimaki JV3-250SP, and all Chinese DX5 grand-format platforms from one stocked part • Genuine Roland OEM 6085393800 also stocked separately for applications requiring OEM parts • Small DX4/DX5 damper (2mm) also stocked for Mimaki JV3/JV4, Mutoh RJ-900, older Roland FJ/SJ • In stock in Doral, Miami FL — same day shipping before 2PM EST • Ideal for Latin American Roland, Mutoh, Mimaki, and Chinese DX5 eco-solvent operations using Miami freight forwarders View our full range of ink dampers for wide-format printers stocked by Digiprint USA. Frequently Asked Questions What is the difference between the large (3mm) and small (2mm) DX4/DX5 damper?Both fit the Epson DX4 or DX5 printhead but use different ink tube connectors. The large damper (this listing) has a 3mm OD connector for printers with larger tube fittings — used in Roland SJ-1000/SP/VP/XC, Mutoh VJ-1604, Mimaki JV3-250SP, and Chinese DX5 grand-format platforms. The small damper has a 2mm ID/OD 3.3mm connector for printers with smaller tube fittings — used in Mimaki JV3/JV4/JV22, Mutoh Rockhopper/RJ-900, and older Roland FJ/SJ series. Check your printer's existing damper connector diameter before ordering. Is this a compatible or OEM Roland damper?This is a compatible/generic replacement corresponding to Roland OEM part 6085393800. The genuine Roland OEM version ("Assy, Ink Damper L 3FAI 4") is stocked separately on our site at a higher price point. Both cover the same Roland SJ/SP/VP/XC platform. For routine maintenance and high-volume replacement cycles, this compatible version offers the same physical compatibility at lower cost. For OEM warranty service, see the dedicated Roland 6085393800 listing. How many dampers does my printer require per head?The DX4 (Roland SJ/SP/VP/XC) uses 4 dampers per head — one per CMYK ink channel. The DX5 (Mutoh VJ-1604, Chinese DX5 platforms) also typically uses 4 dampers per head. Replace all dampers simultaneously at every head installation — partial replacement leaves worn dampers causing continued starvation on the new head. Do you ship DX4/DX5 large dampers to Latin America?Yes — same day shipping from our Doral, Miami FL warehouse. Ideal for Latin American Roland, Mutoh, Mimaki, and Chinese DX5 eco-solvent service operations using freight forwarders in the Doral area.
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