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Original Mutoh WN-4L901 Single-Color Printhead Assembly (Albatros Series)
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Factory-original Mutoh WN-4L901 industrial replacement printhead assembly engineered for legacy Mutoh Albatros series wide-format graphic production systems.
OEM Industrial Grand-Format Solvent Component
Original Mutoh WN-4L901 Single-Color Printhead Assembly (Albatros Series)
OEM Part Number: WN-4L901 | Engineering Designation: Print Head Single Colour Assy | Industrial Drop-on-Demand (DoD) Piezoelectric Heavy-Solvent Printhead Module
Mutoh Albatros Production Architecture & Single-Color Transducer Notice
The Mutoh WN-4L901 Printhead Assembly is an authentic factory-original OEM replacement component engineered specifically for Mutoh’s legacy commercial and grand-format solvent production presses: the Albatros series (Mutoh Albatros 54, Albatros 36, and PJ-1304NX / RJ-1304NX). Built on a rugged modular single-color piezoelectric architecture, each WN-4L901 assembly is dedicated to a single discrete color line (CMYK, Light Cyan, Light Magenta). Engineered with solvent-passivated internal manifolds, heavy-duty stainless steel orifice plates, and chemically bonded acoustic chambers, it is optimized to fire aggressive pigmented heavy solvent and mild-solvent inks without cavity breakdown.
Product Overview
The Original Mutoh WN-4L901 Albatros Printhead Assembly is an industrial drop-on-demand (DoD) piezoelectric printhead designed for heavy-duty outdoor billboard advertising, vehicle graphics, PVC mesh banners, backlit signage, and high-durability transit media. Operating within the multi-head carriage array of Albatros plotters, multiple WN-4L901 modules are aligned side-by-side on the carriage gantry—each receiving ink from dedicated sub-tank pumps and industrial filters to drive high ink laydown and deep pigment penetration.
Featuring an industrial linear nozzle array with passivated internal fluid paths, the assembly delivers reliable drop placement accuracy and high dot velocity at commercial carriage speeds. Engineered specifically to handle inks containing aggressive cyclohexanone, glycol ether acetates, and volatile organic solvent carriers, the WN-4L901 prevents nozzle deflection and ink starvation during continuous, multi-hour outdoor banner production runs.
Part Information
| Product Name | Original Mutoh Albatros Single Colour Print Head Assy |
| OEM Manufacturer | Mutoh Industries Ltd. (Japan) |
| Primary OEM Part Number | WN-4L901 |
| Service Catalog Name | Print Head Single Colour Assy - WN-4L901 |
| Transducer Module Format | Dedicated Single-Channel Piezoelectric Drop-on-Demand (DoD) Transducer |
| Component Classification | Grand-Format Heavy-Solvent Industrial Printhead Assembly |
| Carriage Allocation Versatility | Universal Single-Color Station: Mounts across any assigned color position on the Albatros carriage |
| Ink Chemistry Compatibility | Mutoh Albatros True Solvent Inks, Mild Solvent, & Heavy Industrial Solvent Pigments |
| Country of Origin | Japan (100% Brand New, Sealed Factory Packaging) |
Technical Specifications
| Actuation Physics | Industrial Piezoelectric Drop-on-Demand (PZT Actuator System) |
| Fluid Channel Routing | 1 Dedicated Fluid Channel per Assembly (Single-Color Modular Engine) |
| Native Droplet Profile | Industrial macro-drop / standard drop volume calibrated for outdoor billboards and high ink laydown |
| Nozzle Plate Metallurgy | Solvent-passivated stainless steel faceplate with anti-corrosion chemical treatment |
| Fluid Interface Porting | Dedicated solvent-resistant fluid nipple connection matched to Albatros sub-tank supply lines |
| Electronic Drive Interface | Multi-conductor ribbon cable connection interfacing with Mutoh Albatros Head-CONT & HV boards |
| Operating Temperature & Humidity | 18°C to 28°C (64°F to 82°F); 35% to 70% RH non-condensing |
| Package Gross Weight | Approx. 0.35 kg (packaged with anti-static shielding and protective preservation fluid) |
Key Features & Operational Advantages
- True Heavy-Solvent Resistance: Internal cavity epoxy bonds and manifold seals withstand true solvent carriers without swelling or delamination.
- Modular Single-Color Architecture: Independent single-color printheads allow individual channel replacement if a nozzle bank fails, lowering total ownership maintenance costs.
- High Ink Laydown for Outdoor Signage: Designed to fire dense pigmented solvent inks onto uncoated vinyl, banners, and mesh with high outdoor UV lightfastness.
- Direct Drop-In OEM Fitment: Built to exact Mutoh factory dimensions, restoring original droplet trajectory and carriage height parallelization without bracket modifications.
CRITICAL TECHNICAL & SERVICE ADVISORY
1. Platform Specificity (WN-4L901 vs. Modern Multi-Channel Heads): The WN-4L901 is engineered exclusively for Mutoh Albatros series printers (Albatros 54/36, PJ-1304NX / RJ-1304NX). It is completely incompatible with multi-channel Epson-based heads found on ValueJet models (DX5 DF-49684, DX7 DH-40274) or Rockhopper series heads (DX4 MY-44743). Physical dimensions, electrical interfaces, and drive voltage requirements do not cross over.
2. High-Voltage (HV) Drive Board Calibration: Albatros systems utilize dedicated high-voltage controller boards (e.g., EA-3B542) and Head-CONT boards to drive individual printhead channels. Following head replacement, the technician must calibrate drive voltage ranks and run mechanical slant adjustments on the carriage plate to match neighboring color lines.
3. Ink Line Priming & Pump Inspection: Ensure the sub-tank delivery tubes and peristaltic pump assemblies (e.g., WN-4L579) are fully flushed and free of crystallized solvent residue before connecting ink lines to a brand-new WN-4L901 module. Trapped solvent particulate will cause instant nozzle deflection or permanent chamber clogs.
4. Faceplate Maintenance Precautions: Never wipe the metallic nozzle faceplate with dry shop wipes or coarse paper towels. Clean only using approved lint-free foam swabs moistened with genuine Mutoh Albatros solvent flushing liquid. Regularly inspect the capping seals and wipers to prevent ink crusting along the orifice row.
Compatible Models & Systems
| Series / Lineup | Compatible Printer Models | Carriage Configuration |
|---|---|---|
| Mutoh Albatros Series | Mutoh Albatros 54, Mutoh Albatros 36 | Multi-Head Single-Color Array (CMYK / 6-Color) |
| Mutoh PJ / RJ Series | Mutoh PJ-1304NX, RJ-1304NX (Albatros Platform) | Grand-Format Solvent Carriage |
| Mutoh Rockhopper Series (Reference) | Rockhopper II, Rockhopper 3 | Incompatible: Rockhopper uses dual-channel DX4 heads (MY-44743) |
| Mutoh Spitfire / Blizzard (Reference) | Spitfire 65/90/100, Blizzard 65/90 | Incompatible: Spitfire/Blizzard series uses DX4 heads (MY-44743) |
| Mutoh ValueJet Series (Reference) | VJ-1204, VJ-1604, VJ-1624 | Incompatible: ValueJet models use 8-channel DX5/DX7 assemblies |
*Model Differentiation Note: Specifically engineered for Mutoh Albatros 54, 36, and PJ-1304NX / RJ-1304NX grand-format solvent plotters. Confirm printer serial and carriage station configuration prior to unpacking.
Terms, Warranty & Customer Protection
Condition: 100% Brand New, Genuine OEM Factory-Original Mutoh replacement printhead assembly in sealed factory packaging with factory shipping preservation fluid intact.
Manufacturer Warranty: Covered under standard OEM parts limited warranty against material and manufacturing defects out-of-box prior to ink introduction. No warranty applies once active solvent ink or flush fluid has been introduced into the micro-fluidic chambers, or if damage results from head strikes, media crashes, electrostatic discharge, or improper cable seating.
Return Policy: Precision industrial electronic component. Unopened, factory-sealed boxes with intact tamper-evident seals are eligible for standard commercial return. Once the vacuum seal is broken, protective nozzle tape removed, or the head mounted onto a carriage frame, returns cannot be accepted due to fluid priming, static risk, and electrical contamination hazards.
WN-4L901
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