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Ewan Yu Chi Shing Printing Equipment Co., Ltd.

Ewan Yu Chi Shing Printing Equipment Co., Ltd.

Ricoh GEN5 MH5440 Industrial Inkjet Printhead N221345P

Ricoh GEN5 MH5440 N221345P Printhead

The MH5440 (part number N221345P) is the four-color model in Ricoh’s fifth-generation (GEN5) MH54 series, capable of independently jetting four colors from a single printhead with fully isolated ink paths. It is compatible with UV-curable, solvent, and aqueous inks, making it widely used in wide-format, textile, and single-pass industrial printing applications. Built with a stainless steel body and integrated heating and temperature control, it offers strong corrosion resistance and a long service life, well suited to extended continuous production.

Key Features

The built-in heater enables jetting of high-viscosity inks. The ink path is fully isolated from the piezoelectric actuator, so the ink never contacts the piezo elements, resulting in greater stability. Multi-drop technology produces droplets of varying sizes for fine grayscale rendering. The stainless steel construction delivers excellent corrosion resistance and durability.

Model differences: The MH5440 (N221345P) and the two-color MH5420 share identical construction and print specifications, differing only in the number of isolated ink paths. The MH5440 uses a four-dual-port design, allowing a single printhead to carry a complete CMYK color set—ideal for compact equipment designs that aim to reduce the number of printheads.

Applications

As a general-purpose OEM industrial printhead, the MH5440 (N221345P) can be used across a range of platforms, including UV flatbed, UV roll-to-roll, solvent wide-format, textile, and single-pass printing. It has no fixed list of compatible machines; specific compatibility is determined by the OEM system design, so it is best to confirm against your actual equipment model before selecting it.

MH5420MH5440
MethodPiston pusher with metallic diaphragm plate
Print Width54.1 mm(2.1″)
Number of nozzles1,280 (4 × 320 channels), staggered
Nozzle spacing (4 color printing)1/150″(0.1693 mm)
Nozzle spacing (Row to row distance)0.55 mm
Nozzle spacing (Upper and lower swath distance)11.81mm
Compatible inkUV, Solvent, Aqueous, Others.
Total printhead dimensions89(W) × 69(D) × 24.51(H) mm (3.5″ × 2.7″ × 1.0″) excluding cables & connectors
Weight155g
Max.number of color inks2 colors4 colors
Operating temperature rangeUp to 60°C
Temperature controlIntegrated heater and thermistor
Jetting frequencyBinary mode : 30kHz / Grey-scale mode : 20kHz
Drop volumeBinary mode: 7pl / Grey-scale mode : 7-35pl *depending on the ink
Viscosity range10-12 mPa·s
Surface tension28-35mN/m
Grey-scale4 levels
Total Length248 mm (standard) including cables
Ink portYes
Number of ink ports2 × dual ports4 × dual ports
Alignment pin directionFront (standard)