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Original Mimaki TX400-1800 Textile Printhead Assembly (M011941)
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100% Genuine OEM Mimaki M011941 (TX400 Head 1 Assy) industrial piezoelectric printhead assembly engineered specifically for Mimaki TX400-1800B and TX400-1800D digital textile printers.
OEM Industrial Direct-to-Textile Component
Original Mimaki TX400-1800 Textile Printhead Assembly (M011941)
OEM Part Number: M011941 / MP-M011941 (Engineering Title: TX400-1800D Head 1 Assy) | Industrial Ricoh Gen4 Multi-Drop Grayscale Piezoelectric Aqueous Textile Printhead Module
TX400-1800 Series Industrial Textile Gen4 Architecture Notice
The Mimaki M011941 Printhead Assembly (engineering title: TX400-1800D Head 1 Assy) is an authentic OEM industrial drop-on-demand replacement module engineered specifically for Mimaki’s high-precision direct-to-textile production engines: the TX400-1800D (Direct Textile) and TX400-1800B (Conveyor Belt Transport). Built around the proven Ricoh Gen4 (MH2420 core) stainless-steel architecture, this specialized aqueous assembly incorporates passivated internal manifolds, an integrated heating block with a thermistor harness, and non-coated stainless-steel orifice faceplates calibrated for Mimaki Sb210 dye sublimation, TP250 pigment, and Rc300 reactive textile ink chemistries.
Product Overview
The Original Mimaki TX400-1800 Textile Printhead Assembly (M011941) is an industrial electro-mechanical printhead unit designed for continuous commercial apparel manufacturing, soft signage, trade show backdrops, flag production, and home furnishing fabrics. Operating within a high-speed multi-head staggered carriage configuration (featuring up to 8 printheads on the TX400 platform), this module powers simultaneous 4-color (dual CMYK), 6-color (CMYKLcLm), or 8-color printing at production speeds up to 100 m²/h with high dot placement accuracy.
Featuring 384 active addressable micro-nozzles configured across 2 independent linear rows (192 nozzles per row) with a native spacing of 0.1693 mm, the Gen4 platform achieves native output resolutions up to 1200 DPI across 360, 540, 720, and 1200 DPI profiles. Leveraging multi-drop grayscale waveform modulation, the unit discharges a native 7 picoliter (7 pl) droplet with dynamic variable drop volumes ranging from 5 pl to 25 pl. This dynamic control delivers smooth pastel skin tones and crisp line definition alongside deep, saturated solid color penetration into fibrous textile webs. Built with all-metal stainless-steel fluid routing and isolated D33 PZT actuators, the head provides extreme mechanical longevity rated up to 100 billion actuations per nozzle.
Part Information
| Product Name | Original Mimaki TX400-1800D Head 1 Assy |
| OEM Manufacturer | Mimaki Engineering Co., Ltd. / Ricoh Industrial Engine (Japan) |
| Primary OEM Part Numbers | M011941 / MP-M011941 |
| Engineering Service Name | TX400-1800D Head 1 Assy |
| Core Transducer Architecture | Ricoh Gen4 / MH2420 Industrial Piezo Platform (D33 Stacked PZT) |
| Component Classification | Industrial Piezoelectric Drop-on-Demand (PZT DoD) Aqueous Textile Printhead Module |
| Carriage Allocation Versatility | Universal Multi-Head Carriage: Mounts across all 8 head bays in the TX400 staggered array |
| Supported Channel Routing | 4-Color (Dual CMYK), 6-Color (CMYKLcLm), or 8-Color (CMYK + Light / Spot Dye Colors) |
| Ink Chemistry Pairing | Mimaki Genuine Aqueous Textile Inks (Sb210 Sublimation, TP250 Textile Pigment, Rc300 Reactive) |
| Country of Origin | Japan (Genuine Factory Original Sealed Package) |
Technical Specifications
| Actuation Physics | Industrial High-Durability D33 Stacked PZT Piezoelectric Actuator Engine |
| Active Addressable Nozzles | 384 active nozzles total (2 parallel rows × 192 nozzles per row) |
| Nozzle Density & Pitch | 300 NPI (interleaved dual-row); native nozzle spacing: 0.1693 mm (150 NPI per row) |
| Droplet Size Modulation | Multi-drop grayscale: 7 pl native droplet size; variable drop range from 5 pl to 25 pl |
| Maximum Jetting Frequency | Up to 30 kHz (optimized for continuous aqueous textile dye transfer) |
| Structural Chassis Materials | Stainless Steel (SST), Nickel alloy, and water-compatible chemically passivated epoxy |
| Faceplate Surface Chemistry | Non-coated Stainless Steel (SST) orifice faceplate resisting textile lint abrasion |
| Integrated Thermal Subsystem | Internal heating block and precision thermistor harness (temperature regulation up to 60°C) |
| Fluid Interface Porting | Dual dedicated fluid inlet ports matched to TX400 sub-tank damper joint lines |
| Electrical Interface | High-speed multi-conductor gold flat flexible cable (FFC) socket array with ESD grounding shield |
| Operating Temperature & Humidity | 20°C to 30°C (68°F to 86°F); 35% to 65% RH non-condensing |
| Dimensions & Net Weight | 63 × 63 × 16.2 mm (excluding cables); Net weight: ~0.14 kg / Packaged: ~0.38 kg |
Key Features & Operational Advantages
- Aqueous Textile Fluidic Optimization: Internal cavity passivations and manifold bonding withstand high-viscosity dispersed dye surfactants and reactive electrolytes without foaming or micro-cavitation.
- Non-Coated Stainless Steel Faceplate: Designed to withstand continuous wiping against fabric micro-fibers and lint without the physical delamination risks common to soft fluoropolymer coatings.
- Multi-Head Staggered Productivity: Engineered to fire synchronously in the TX400 8-head staggered carriage, delivering industrial textile output speeds up to 100 m²/h with tight inter-head color alignment.
- Active Viscosity Equilibrium: Built-in heating block maintains constant fluid operating temperatures up to 60°C, lowering dye ink viscosity directly behind the acoustic nozzle plate for stable high-frequency firing.
CRITICAL TECHNICAL & SERVICE ADVISORY
1. Gen4 Platform Distinction (Aqueous Textile vs. UV Flatbed): The M011941 (TX400-1800D Head 1 Assy) is built on the Ricoh Gen4 MH2420 platform configured specifically for aqueous textile inks. While sharing physical dimensions with desktop UV Gen4 heads (M010010 for UJF-3042FX/HG), it features distinct fluid inlet connectors, textile-specific driver board timing, and non-coated faceplate metallurgy. Do not cross-install UV Gen4 assemblies into a TX400 carriage.
2. Incompatibility with Next-Gen TX Platforms (Gen4 vs. Gen5 vs. HA812): The M011941 assembly is engineered strictly for the TX400 series. It is completely incompatible with the TX500 series (utilizing Ricoh Gen5 Type-D M022653) and the Tx300P series (utilizing Panasonic HA812 M015885). Confirm machine platform series prior to unpacking.
3. Multi-Head Carriage Slant & Registration Calibration: In the TX400 multi-head carriage, installing a replacement head requires physical mechanical alignment against carriage guide pins followed by service mode electronic registration (`[#] ADJUST` > `HEAD SP-ADJUST` and `SLANT ADJUST`) to align all heads across forward and reverse scan passes.
4. Mandatory Head ID Voltage Registration: After physical mounting and cable connection, the technician MUST enter the alphanumeric Head ID value (printed on the barcode label) into the printer’s Service Mode menu (`[#] PARAMETER` > `HEAD ID`). Running a Gen4 head without its specific factory voltage curve will cause drop deflection, satellite misting, or premature piezo fatigue.
Compatible Models & Systems
| Printer Platform | OEM Part Number | Carriage Configuration & Supported Inks |
|---|---|---|
| Mimaki TX400-1800D | M011941 / MP-M011941 | Direct-to-Fabric 1.8m Textile Press (Multi-Head Staggered Array; Sb210 / TP250 Inks) |
| Mimaki TX400-1800B | M011941 / MP-M011941 | Conveyor Belt Direct-to-Textile Production Engine (Stretch & Knitted Fabrics) |
| Mimaki TX500-1800B / DS (Reference) | M022653 / M014140 | Incompatible: Next-gen TX500 platforms operate on Ricoh Gen5 Type-D printheads |
| Mimaki Tx300P-1800 (Reference) | M015885 | Incompatible: Tx300P platform uses Panasonic high-gap HA812 textile printheads |
| Mimaki UJF-3042FX / HG (Reference) | M010010 / MP-M010010 | Incompatible: Desktop flatbeds use UV-curable Ricoh Gen4 units with different fluid routing |
*Model Differentiation Note: Specifically engineered for Mimaki TX400-1800 series textile printers operating on the aqueous Ricoh Gen4 MH2420 architecture. Confirm machine model code prior to unpacking.
Terms, Warranty & Customer Protection
Condition: 100% Brand New, Genuine OEM Factory-Original Mimaki / Ricoh Industrial 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 textile ink or flush fluid has been introduced into the micro-fluidic chambers, or if damage results from head strikes, fabric jams, 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.
M011941
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