Technology by field
With 1,280 nozzles configured in 4x150dpi rows, this head achieves high-resolution 600dpi printing. Isolated ink paths enable a single printhead to jet up to two ink colors.
Additionally the printhead is provided in two viscosity formats (F/MF) for optimized fluid handling performance.
Highly stable jetting performance is achieved through the introduction of a new recirculating structure. This structure enables continuous ink flow resulting in reducing the risk of jetting failure caused by either clogged ink or entrapped air bubbles. Each printhead has enhanced bonding technology for improved durability. With these new features, the RICOH MH5421F and MH5421MF printheads offer enhanced compatibility with a wider range of fluids. These features result in:
Achieves excellent gray-scale rendering at up to 4 levels.
Ricoh inkjet print heads are made of stainless steel. These heads are highly robust and offer excellent anti-corrosion properties for multiple inks, resulting in excellent durability and extended service life.
The multi-drop capability allows the creation of a range of drop sizes enabling gray-scale printing.
Inkjet head with high durability and reliability for 2 ink colors
Choose from 11mPa･s ink viscosity or 6mPa･s ink viscosity models to suit your application.
|RICOH MH5421F||RICOH MH5421MF|
|Method||Piston pusher with metallic diaphragm plate|
|Ink circulation structure||○|
|Number of nozzles||1280 (4 x 320 channels), staggered|
|Nozzle spacing||1/150" (0.1693mm)|
|Nozzle spacing (Row to row distance)||A : 0.55mm B : 11.81mm (See illustration below)|
|Max. number of color inks||2colors|
|Compatible ink||UV, Solvent, Aqueous, others|
|Operating temperature range||Up to 60℃|
|Temperature control||Integrated heater and thermistor|
|Drop volume||7/14/21pl (depending on the ink)|
|Viscosity range F/MF||11mPa・s||6mPa・s|
|Gray-scale||4levels (depending on the ink characteristic)|
|Separately sold parts||RICOH MH5421F / MH5421MF dedicated cable|
|Total printhead dimensions.||89(W) × 64.2(D) × 24.5(H) mm (3.5" × 2.7" × 1.0")|