Ricoh G6 Print Head Parameters
The Ricoh G6 print head is a new print head. At present, the Ricoh G6 machine has been stable and mature in its application. There are little information about Ricoh g6 print head research and development data parameters. Here are some parameters about the Ricoh G6 print head, I hope to help you. Ricoh G6 print head has two models, one is MH5320 (one head with two colors) and the other is MH5340 (one head with four colors), both of which use ink droplets of 5pl. It can be applied to a variety of water-based inks, eco-solvent inks, UV inks, textile inks, and other inks. Customers can also freely choose one end with two colors or one end with four colors according to their needs. The more colors selected, the corresponding speed and accuracy will decrease.
Product configuration
MH5320 (1 head, 2 colors) MH5340 (1 head, 4 colors) MH532020C (Length: 195mm) MH5320 45C (Length: 453mm)
When using 1 color: 150dpi×4 columns/color→600dpi
When using 2 colors: 150dpi×2 columns/color→300dpi
When using 4 colors: 150dpi×1 column/color→150dpi
Ricoh MH5320/5340 print head product positioning
jet flow = number of nozzles × number of nozzle holes × ignition frequency, Gen6-MH5320/5340 print head is mainly for the field of industrial high-speed UV printing.
Three Features of Ricoh MH5320/5340 Print Head:
(1) High Productivity
Ignition frequency increased → ink volume/unit time increased
MH5420
In binary mode: 30Khz
In gray-scale mode: 20Khz
MH5320
Under gray-scale mode: 50Khz
MH5320 saves 1/2 of printing time vs MH5420 under same DPI.
Example: 600x1200dpi stable drawing scheme
| car scanning speed | Ignition frequency | Pass number | |
| MH5320 scheme | 1.5m/s | 35.4Khz | 4 (x1; y4) |
| MH5420 scheme | 1.4m/s | 17Khz | 8 (x2; y4) |
Increase the ignition frequency and reduce the number of passes to achieve the same output Image quality. Reduce the requirements for the speed increase of the trolley, and reduce the difficulty of the trolley control design.
(2) High Definition
It supports multi-level grayscale printing and provides optimized visual experience for different application scenarios. Small drops for ultra-close viewing; large drops for long-distance viewing; grayscale for close viewing, smooth tones and fine type.
MH5320 enables smooth and excellent print quality without gaininess. Compared with MH5320, MH5420 has been improved by 50% in ink droplet flight velocity deviation, and has been improved by 37% in nozzle position accuracy deviation. The minimum ink drop of MH5320 is 5 pl, and the minimum ink drop of MH5420 is 7 pl.
(3) More Ink Tolerance
MH5420/5440 UV/solvent ink
MH5421/5441 water-based ink
MH5320/5340 UV/solvent/water-based ink. It is able to reduce inventory and extend life. Specifically, the aqueous ink compatibility and service life of the MH5320/5340 is enhanced.
MH5xxx series parameter comparison
| General Properties | MH5320/MH5340 | MH5420/5440 MH5421/5441 |
| Print Width | 54.1mm | 54.1mm |
| # of Nozzles | 1,280 (4×320 channels) | 1,280 (4×320 channels) |
| DPI | 600 | 600 |
| Compatible Ink | UV, Solvent, Aqueous (more ink tolerance) | MH5420/5440: UV, Solvent, MH5421/5441: Aqueous |
| Max # of color | 4 | 4 |
| Max Jetting frequency | 50kHz(high productivity) | 30kHz |
| Drop Volume | 5-15pl (high definition) | 7-21pl |
| Viscosity Range | 10-12mPa/s | 10-12mPa/s |
| Cable Type | Detachable cable(flexible design) | Integrated cable |
