Ricoh GEN5 MH5420 Printhead Description
The Ricoh MH5420, commonly known as Ricoh GEN5, is a high-performance industrial inkjet printhead designed for UV and solvent-based printing systems. Built with durable stainless-steel construction and advanced piezo drop-on-demand technology, it delivers stable ink jetting, precise droplet control, and long-lasting reliability in demanding production environments.
Featuring 1,280 nozzles (4 × 320 channels) with a native resolution of up to 600 dpi, the MH5420 supports grayscale printing for smooth gradients, sharp image quality, and consistent detail reproduction. It is engineered for high-speed industrial printing applications where accuracy, stability, and uptime are critical.
The Gen5 MH5420 is widely used in wide-format printers, signage production, packaging, textiles, and other industrial digital printing systems. It is known for its strong durability, versatile ink compatibility, and dependable performance in continuous production workflows.
Key Features
- Piezo drop-on-demand inkjet technology
- 1,280 nozzles (4 × 320 configuration)
- Native resolution up to 600 dpi
- Supports grayscale printing (smooth tonal transitions)
- Compatible with UV and solvent inks
- Stainless-steel industrial-grade construction
- Stable jetting performance for high-speed production
- Long service life and low maintenance design
Ricoh Gen5 MH5420 Printhead Specifications
| Method | Piston pusher with metallic diaphragm plate |
| Print Width | 54.1 mm (2.1″) |
| 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 |
| Max. number of color inks | 2 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 | 248 mm (standard) including cables |
| Dimensions | 89 x 25 x 69 mm (excluding cable) |
| Number of ink ports | 2 × dual ports |
| Alignment pin direction | Front (standard) |
| Ink compatibility | UV, Solvent, Aqueous, Others. |
| Dimensions (WxDxH)n | 89 x 24.51 x 69 mm (3.5’’x 1.0″ x 2.7’’) excluding cables & connectors |
| Weight | 155g |
