}Kyocera KJ4A-RH UV Printhead | 2,656 Nozzles 600dpi 5pl UV Flatbed
Brand: Kyocera
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Availability: In stock
The Kyocera KJ4A-RH is a genuine original next-generation UV inkjet printhead for high-speed single-pass and multi-pass UV printing applications. With 2,656 nozzles at 600 dpi native resolution, a minimum 5pl drop size, up to 30 kHz firing frequency, and a unique ink channel design providing stable ink flow, it delivers precise, consistent UV output in demanding industrial environments. The integrated internal ink filters and heater with thermistor ensure reliable operation across varying ambient conditions. Every KJ4A-RH we sell at Digiprint USA is 100% genuine original Kyocera Japan.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | Kyocera KJ4A-RH |
| Total nozzles | 2,656 (single colour) |
| Nozzle pitch | 0.042 mm |
| Standard resolution | 600 × 600 dpi |
| Print swathe width | 108.25 mm |
| Drop volume | 5 pl, 7 pl, 12 pl, 18 pl (variable) |
| Max drive frequency | 30 kHz |
| Max print speed | 70 m/min |
| Ink compatibility | UV-curable inks |
| Typical ink viscosity | 6.0–7.0 mPas |
| Internal filters | Yes — eliminates foreign objects from ink path |
| Temperature control | Internal reservoir heater and thermistor |
| Input voltage | 3.3V (logic) / 29V (drive) |
| Dimensions | 200 × 30 × 68.9 mm |
| Dry weight | 420 g |
| Country of origin | Japan |
| Condition | 100% genuine original Kyocera, brand new |
KJ4A-RH vs KJ4A-TA vs KJ4A-0300 — Full KJ4A Series Comparison
| Spec | KJ4A-RH (this listing) | KJ4A-TA | KJ4A-0300 |
|---|---|---|---|
| Resolution | 600 dpi | 600 dpi | 300 dpi |
| Min drop size | 5 pl | 6 pl | 4 pl |
| Max speed | 70 m/min | 50 m/min | 158 m/min |
| Print width | 108.25 mm | 108.25 mm | 112.35 mm |
| Dimensions | 200 × 30 × 68.9 mm | 200 × 30 × 68.9 mm | 200 × 36 × 61.4 mm |
| Weight | 420 g | 420 g | 540 g |
| Ink type | UV | UV | UV / aqueous |
| Best for | High-res UV flatbed, balanced speed and quality | Fine-detail UV labels, packaging, surprint | Ultra-high-speed single-pass production |
The KJ4A-RH and KJ4A-TA share the same physical footprint (200 × 30 × 68.9mm, 420g) and 600 dpi resolution, but the RH offers a slightly finer minimum drop (5pl vs 6pl) and higher maximum speed (70 vs 50 m/min). The KJ4A-0300 is the high-speed 300 dpi variant with a different physical form factor. Contact our team to confirm which KJ4A variant your printer specifies before ordering.
Compatible Printers
This printhead is compatible with the following UV flatbed and roll-to-roll printers:
The KJ4A-RH is also used in Handtop, Docan, Wit-color, and JHF UV flatbed platforms. Contact our team with your printer make, model, and firmware version to confirm KJ4A-RH compatibility before ordering.
Warranty Notice
Due to the sensitive nature of industrial UV 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 Kyocera KJ4A-RH — not compatible, not refurbished
• Manufacturer warranty — sealed original Kyocera packaging
• 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 KJ4A-RH vs KJ4A-TA vs KJ4A-0300 for your printer before you order
View our full range of genuine Kyocera industrial printheads including the KJ4A-TA and the KJ4A-0300.
Frequently Asked Questions
What is the difference between KJ4A-RH and KJ4A-TA?
Both are 600 dpi, 2,656-nozzle, 108.25mm UV printheads in the same physical form factor. The KJ4A-RH has a slightly finer minimum drop (5pl vs 6pl) and runs faster (70 m/min vs 50 m/min). The KJ4A-TA is optimised for fine-detail UV label and surprint applications at lower speed. The RH is better suited for UV flatbed and roll-to-roll systems requiring higher throughput. They are not interchangeable — always check your printer's specification before ordering.
What is the difference between KJ4A-RH and KJ4A-0300?
The KJ4A-0300 is the 300 dpi, 112.35mm variant in a different physical form factor (200 × 36 × 61.4mm, 540g vs the RH's 200 × 30 × 68.9mm, 420g). The 0300 reaches 158 m/min but at lower resolution. The RH delivers higher resolution (600 dpi) at a more moderate 70 m/min. They are not interchangeable.
What UV inks are compatible with the KJ4A-RH?
The KJ4A-RH is engineered for UV-curable inks with a typical viscosity of 6.0–7.0 mPas. The internal heater and thermistor maintain consistent ink temperature for stable jetting across varying ambient conditions. Always verify your specific UV ink formulation against Kyocera's KJ4A-RH specifications before installation.
Do you ship Kyocera KJ4A-RH printheads to Latin America?
Yes — same day shipping from our Doral, Miami FL warehouse. Our Miami location is ideal for Latin American industrial UV print shops using freight forwarders in the Doral area.
