Epson DX4 Water-Based Printhead 228054740 for Roland HiFiJet Mimaki JV4 Mutoh RJ-8000

Product Overview

The Epson DX4 Water-Based Printhead is an original, Japanese-manufactured MicroPiezo replacement component designed specifically for water-based dye, aqueous pigment, and textile dye-sublimation wide-format digital printers. Delivered in sealed original Roland packaging, this fourth-generation printhead features 2 independent ink channels with 180 nozzles per line, providing a total of 360 active nozzles. Operating at an 8 kHz firing frequency and 360 dpi native resolution, it jets precise droplets with a minimum volume of 3.5 picoliters, making it the industry standard head for water-based wide-format production.

Part Information

• Brand: Epson / Roland

• Product Type: Inkjet Printhead

• Model: DX4 Water-Based

• Roland OEM Part Number: 228054740#

• Technology: MicroPiezo Drop-on-Demand Piezoelectric

• Nozzle Configuration: 2 Lines x 180 Nozzles (360 Active Nozzles Total)

• Minimum Drop Volume: 3.5 pl

• Native Resolution: 360 dpi

• Firing Frequency: 8 kHz

• Ink Compatibility: Water-Based Dye and Aqueous Pigment Inks

• Condition: Genuine Original

Technical Specifications

Technical Precision & Operational Advisory

• Aqueous Ink System Only: This printhead features internal manifold seals formulated specifically for water-based dye and pigment ink chemistries. Do not run eco-solvent, mild-solvent, UV, or aggressive chemical inks through this head, as non-approved solvent chemistries will degrade the internal manifold materials and permanently damage the unit.

• Multi-Channel Usage: Equipped with 2 independent ink channels that can be configured to fire a single color across both nozzle lines or two distinct colors through each individual channel.

• Data Cable Replacement: It is strongly recommended to replace the flat flexible printhead data cables (FFC) when installing a new printhead. Aged, flexed, or ink-contaminated data cables are a primary cause of short circuits that can destroy both the printhead and the printer's main carriage board.

Compatible Printers or Equipment

Important Compatibility Notice

Please verify your existing part number and equipment model before placing an order. If you are unsure about compatibility, please contact us with your printer or machine model and the part number of your existing component.

Packaging and Shipping

The product will be carefully packed to help ensure safe international shipping.

Genuine Product Notice

This product is supplied as a genuine original replacement part.

Warranty and Customer Protection

This product is covered by a 1-year warranty against manufacturing defects, subject to the applicable warranty terms and conditions.

We also provide a 30-day store guarantee for customer protection. If your item arrives damaged, defective, or does not function properly upon receipt, please contact us within 30 days of delivery.

Depending on the situation, we will provide a replacement or a 100% refund of the product payment.

Please contact us before returning any item so we can assist you with the return process.

This warranty and return protection applies in accordance with our applicable warranty and return terms.