Ricoh Gen5 Printhead UV MH5440 (500MM 4 Colors) N221345P Description
The Ricoh Gen5 MH5440 (N221345P) is an original industrial inkjet printhead designed for UV, solvent, and aqueous-based inks, delivering high-resolution and multi-color performance for advanced inkjet printing systems.
Equipped with 1,280 nozzles arranged in 4 × 150dpi rows, this printhead achieves up to 600dpi resolution. Its isolated ink path design allows a single printhead to jet up to four different ink colors, while providing excellent grayscale performance with up to 4 gray levels per dot.
Ink compatibility: UV, solvent, and aqueous
- Nozzles: 1,280
- Resolution: Up to 600dpi
- Ink channels: Up to 4 colors
- Grayscale: Up to 4 levels per dot
- Total length: 500mm
- Model: MH5440
- Ricoh P/N: N221345P
Supplied with hose barbs as standard, which can be removed if an O-ring ink connection is required, offering flexibility for different ink delivery system designs.
Ricoh Gen5 Printhead UV MH5440 N221345P Specifications
| Method | Piston pusher with metallic diaphragm plate |
| Number of nozzles | 1,280 (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) | 11.81 mm |
| Print Width | 54.1 mm (2.1″) |
| Max. number of color inks | 4 colors |
| Operating temperature range | Up to 60℃ |
| Temperature control | Integrated Heater and Thermistor |
| Jetting frequency | Binary mode: 30 kHz / Grey-scale mode: 20 kHz |
| Drop volume | Binary mode: 7 pl / Grey-scale mode: 7-35 pl *depending on the ink |
| Viscosity range | 10-12 mPa•s |
| Surface tension | 28-35 mN/m |
| Grey-scale | 4 levels |
| Total Length | 500 mm (standard) including cables |
| Dimensions | 89 x 25 x 69 mm (excluding cable) |
| Number of ink ports | 4 × dual ports |
| Alignment pin direction | Front (standard) |
| Ink compatibility | UV, Solvent, Aqueous, Others. |
