Ricoh GEN4L Printhead MH2820 27PL | 384 Nozzles UV Solvent Aqueous

The Ricoh GEN4L MH2820 is a genuine original industrial piezoelectric printhead for UV, solvent, aqueous, and oil-based printing systems. With 384 nozzles (2 × 192), a 27pl native drop size scalable to 54pl, and an integrated heater capable of warming ink to 80°C, it handles a wide range of high-viscosity ink formulations across UV, solvent, and aqueous applications. The MH2820 is a broad-application head used by OEM integrators across wide-format, UV flatbed, textile, and 3D printing systems. Every MH2820 we sell at Digiprint USA is 100% genuine original Ricoh, covered by manufacturer warranty.

Technical Specifications

Specification	Detail
Model	Ricoh GEN4L MH2820
Total nozzles	384 (2 rows × 192 nozzles)
Nozzle spacing (within row)	0.339 mm
Nozzle plate surface	Non-wet coating
Native drop volume	27 pl
Drop volume range	27 – 54 pl
Greyscale levels	3 levels
Jetting frequency — 27pl	30 kHz
Jetting frequency — 54pl	20 kHz
Viscosity range	11–13 mPas
Surface tension	28–35 mN/m
Temperature control	Integrated heater and thermistor — up to 80°C operation
Ink ports	1 colour: 1 × dual port / 2 colours: 2 × dual port
Piezo type	D33 Stacked PZT
Ink compatibility	UV-curable, solvent, aqueous, oil-based inks
Dimensions (excl. cables)	120 × 75.56 × 13.2 mm
Total length (incl. cables)	256 mm
Head materials	SST, nickel and epoxy adhesive (direct contact with ink)
Alignment pin direction	Front (standard)
Service life	100 billion actuations per nozzle
Warranty	Manufacturer warranty included
Country of origin	Japan

Ricoh GEN4L MH2820 vs GEN5 MH5420 — Generation Comparison

Spec	GEN4L MH2820 (this listing)	GEN5 MH5420 UV
Nozzles	384 (2 × 192)	1,280 (4 × 320)
Native drop	27 pl	7 pl
Drop range	27–54 pl	7–35 pl
Max frequency	30 kHz (27pl)	60 kHz
Viscosity range	11–13 mPas	Lower viscosity inks
Best for	High-viscosity inks, large-drop production, multi-ink-type systems	High-resolution UV/solvent, fine-detail industrial

The GEN4L MH2820 is designed for large-drop, high-viscosity applications — the wide 27–54pl range and 11–13 mPas viscosity tolerance make it suited for thick inks across UV, solvent, aqueous, and oil-based systems. The GEN5 MH5420 offers finer drops (7pl) at higher frequency (60kHz) for more precision-demanding UV and solvent applications. The two are not interchangeable — printer specifications determine which generation is required.

Compatible Systems

The Ricoh GEN4L MH2820 is a broad-application OEM head used by system integrators across wide-format UV flatbed printers, textile printers, UV roll-to-roll printers, and 3D printing systems. Unlike printer-specific heads, the MH2820 does not have a fixed compatible printer list — it is specified at the OEM system level. Contact our team with your printer make, model, and firmware version to confirm MH2820 compatibility before ordering.

Ink Port Configuration

The MH2820 supports both single-colour (1 × dual port) and two-colour (2 × dual port) ink configurations depending on how the OEM printer is set up. This flexibility makes it suitable for printers that run two ink channels through a single head as well as single-channel configurations. Always confirm your printer's port configuration with your service documentation before installation.

Warranty Notice

Due to the sensitive nature of industrial printhead components, we cannot accept returns, exchanges, or refunds once the printhead has been installed. All sales are final. Contact our team to confirm compatibility with your printer before ordering.

Why Buy from Digiprint USA

• 100% genuine original Ricoh GEN4L MH2820 — not compatible, not refurbished

• Manufacturer warranty included — 100 billion actuations per nozzle service life

• In stock in Doral, Miami FL — same day shipping before 2PM EST

• Ideal for Latin American UV and industrial print shops using Miami freight forwarders

• Free technical support — we confirm MH2820 compatibility and ink port configuration for your printer before you order

View our full range of genuine Ricoh industrial printheads including the GEN5 MH5420 UV and the GEN5 MH5421 Water.

Frequently Asked Questions

What is the difference between Ricoh GEN4L and GEN5?
The GEN4L MH2820 is a larger-drop head (27–54pl) optimised for high-viscosity inks at 30kHz with 384 nozzles. The GEN5 MH5420 is a finer-drop head (7–35pl) at 60kHz with 1,280 nozzles — suited for higher-resolution UV and solvent printing. The GEN4L serves applications requiring larger drops, higher ink viscosity tolerance, and multi-ink-type flexibility. The two are not interchangeable.

What inks are compatible with the MH2820?
The MH2820 is compatible with UV-curable, solvent, aqueous, and oil-based inks within a viscosity range of 11–13 mPas and surface tension of 28–35 mN/m. The integrated heater allows operation up to 80°C for high-viscosity ink systems. Always verify your specific ink formulation against the MH2820 datasheet before installation.

What printers use the Ricoh GEN4L MH2820?
The MH2820 is an OEM-integrated head used across multiple printer brands and categories including wide-format UV flatbed, textile, roll-to-roll, and 3D printing systems. Contact our team with your printer make, model, and serial number to confirm MH2820 compatibility. We can also assist with identifying the correct ink port configuration for your system.

What is the ink port configuration on the MH2820?
The MH2820 supports single-colour operation via 1 × dual port, or two-colour operation via 2 × dual ports. The dual-port design also facilitates easy priming, flushing, and ink recirculation. Confirm which configuration your printer requires before ordering.

Do you ship Ricoh GEN4L printheads to Latin America?
Yes — same day shipping from our Doral, Miami FL warehouse. Our Miami location is ideal for Latin American UV and industrial print shops using freight forwarders in the Doral area.

Tags: Gen4l 27pl , Mh2820 , Printhead , Ricoh