Ricoh GEN5S MH5220 Printhead Description
The Ricoh GEN5s MH5220 Printhead is a high precision industrial UV inkjet printhead engineered for demanding single-pass and multi-pass printing applications. Built with Ricoh’s durable stainless steel construction and advanced piezo technology, the MH5220 delivers stable jetting performance, excellent durability, and long operational life in continuous production environments.
The printhead features 1,280 nozzles with native 600 dpi resolution and supports grayscale printing with variable droplet sizes from 2.5pl to 9pl, enabling smooth gradients, sharp text, and high image quality without visible graininess. Its integrated heater and thermistor allow stable printing with high viscosity UV inks while maintaining consistent output quality at high production speeds. The isolated ink path design improves chemical resistance and reliability, reducing the risk of ink related actuator damage.
Widely used in label, packaging, graphics, décor, and industrial printing systems, the Ricoh Gen5s MH5220 is trusted for precision, reliability, and consistent industrial performance. It is commonly integrated into commercial printers requiring dependable productivity and fine detail.
The main functions of Ricoh GEN5s MH5220 printhead include:
1. Configured with 1,280 nozzles in 4 x 320 nozzles, the print head achieves high resolution without the grainy appearance of ink dots and is capable of printing at 1,200 dpi resolution in a staggered configuration of multiple print heads.
2. The multi-ink drop function can create various ink drop sizes from 2.5 to 9pl, and the pattern fineness completely exceeds the Epson printhead.
(Note that with multi-drop technology, droplets are ejected in rapid succession and then merge in flight before reaching the media surface).
3. Stainless steel structure, durable and long service life.
4. Built-in heater, capable of spraying high-viscosity ink.
5. Compatible with UV durable ink for label printing.
6. It can work 24 hours a day without interruption, 20 hours a day, and can be used for about 3-4 years, which is 3 times longer than the service life of similar printheads.
7. 5 gray-scale piezoelectric printheads, variable ink droplet printing, meeting the image density requirements, making the printed image clear-cut, uniform in color, and saving 30% of ink.
Ricoh GEN5S MH5220 Printhead Specifications
| Method | Piston pusher with metallic diaphragm plate |
| Print Width | 54.1 mm (2.1″) |
| Number of nozzles | 1,280 (4 x 320 channels), staggered |
| Nozzle spacing (Within a row) | 1/150″ (0.1693 mm)/row |
| Nozzle spacing A (row-to-row distance) | 0.93 mm |
| Compatible ink | UV |
| Max. number of colors inks | 2 colors |
| Temperature control | Integrated heater and thermistor |
| Life | 100 billion actuations per nozzle |
| Jetting frequency | 30kHz |
| Drop volume |
Binary mode: 2.5pl / Gray-scale mode: 2.5-9pl *depending on the ink |
| Viscosity range | 10~12mPa • s |
| Surface tension | 28~35mN/m |
| Maximum grey scale | 4 levels |
| Ink port | 2 x dual ports |
| Alignment pin direction | Front (standard) |
| Dimensions (WxDxH) | 89 x 24.5 x 66.3 mm (3.5’’x 1.0″ x 2.6’’) excluding cables & connectors |
| Weight | 142g |
