Ricoh G5S Printhead/Ricoh MH5220 Printhead Description
The Ricoh G5s printhead, also called the Ricoh MH5220 printhead, is an industrial printhead released by Ricoh in May 2016.
The main functions of Ricoh G5s 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 G5S Printhead/Ricoh MH5220 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) | 0.93 mm |
| Max. number of color inks | 2 colors |
| Drop volume | Binary mode: 2.5pl / Grey-scale mode : 2.5-9pl *depending on the ink |
| Jetting frequency | 30kHz |
| Compatible ink | UV |
| Number of ink ports | 2 × dual ports |
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