Ricoh GEN5 Printhead - MH5440

Ricoh GEN5 Printhead MH5440, focused on quick evaluation and purchase decisions. It is a 4-color industrial inkjet head with 1,280 nozzles, a 54.1 mm print width, and support for UV, solvent, aqueous, and other inks.

Core specs

•     Model: MH5440, part of the Ricoh MH5420/MH5440 family.
•     Nozzles: 1,280 total, arranged in 4 x 150 dpi rows for 600 dpi printing.
•     Print width: 54.1 mm.
•     Max colors: Up to 4 colors with isolated ink paths.
•     Drop size: 7 pl binary, 7–35 pl grayscale depending on ink.
•     Viscosity range: 10–12 mPa·s.
•     Operating temperature: Up to 60°C, with integrated heater and thermistor.

Buyer FAQ

What is it best for?

It is best for industrial printing where you want a balance of resolution, durability, and variable-drop control, especially in UV, solvent, or aqueous systems.

Is it a true 4-color head?

Yes, the MH5440 is designed to jet up to four ink colors because the ink paths are isolated.

What print quality should I expect?

In the common configuration, it delivers 600 dpi output from four 150 dpi nozzle rows, with grayscale support for smoother tones.

Will it work with my ink?

It is compatible with UV, solvent, aqueous, and other inks, but the ink still has to match the head’s viscosity and surface-tension window.

What ink window should I check before buying?

Look for viscosity around 10–12 mPa·s and surface tension around 28–35 mN/m.

How fast can it fire?

Listed jetting frequency is 30 kHz in binary mode and 20 kHz in grayscale mode.

What makes it attractive versus simpler heads?

The main advantages are 4-color capability, variable drop sizes, high nozzle count, and built-in temperature control.

What are the main buying risks?

The biggest risks are ink mismatch, controller/driver incompatibility, and buying a unit that is not genuine or not matched to your machine. The printhead spec alone does not guarantee plug-and-play compatibility.

Is it covered with Warranty?

Yes this printhead is covered with manufactured warranty.

Purchase checklist

•     Confirm your printer’s controller and driver support for Ricoh GEN5 heads.
•     Verify the ink chemistry and physical properties against the head’s operating window.
•     Check whether you need 1-color, 2-color, or 4-color operation before ordering.
•     Verify for exact model confirmation, packaging condition, and warranty terms.
•     Make sure the replacement head matches your carriage, cabling, and mounting orientation.

Good fit / poor fit

Good fit if: You need a rugged industrial head for UV/solvent/aqueous printing, want 4-color flexibility, and can tune the system properly.

Poor fit if: you need a consumer-style drop-in replacement, have unknown ink chemistry, or lack compatible electronics and firmware.

One-line verdict

The MH5440 is a strong choice for industrial buyers who want a versatile, high-resolution 4-color head and already have a compatible print system.