



Kyocera · KJ4B EX · Recirculating water-based printhead
Kyocera KJ4B-EX1200-RC Water-Based Printhead (1200 dpi)
Original Kyocera KJ4B-EX1200-RC – a 1200 dpi water-based head with ink recirculation and water cooling, 80 kHz and up to 101.6 m/min.
- 100% original & brand new
- Made in Japan
- Worldwide shipping by DHL / FedEx
Wholesale price · USD per piece
1 – 4 pcs
$7,300
5 – 9 pcs
$7,260
10+ pcs
$7,260
- 1200 dpiresolution
- 80 kHzmax frequency
- 101.6 m/minmax speed
- Yesrecirculation
Kyocera KJ4B-EX1200-RC Printhead Overview
The Kyocera KJ4B-EX1200-RC is a 1200dpi industrial-grade piezoelectric inkjet printhead developed by Kyocera for water-based inks. As part of the new-generation EX series with ink recirculation, it delivers outstanding jetting performance across a wide range of applications—including commercial printing, package printing, transaction and document printing, security printing (with MICR magnetic ink), and textile printing—handling both single-pass and multi-pass modes with ease. Powered by Kyocera’s proprietary large monolithic piezoelectric ceramic actuator, the printhead delivers uniform, high-resolution output even at high operating speeds.
The printhead features an ink recirculation structure that continuously circulates ink around the nozzles, suppressing the sedimentation of ink components and maintaining uniform temperature. This enables compatibility with a wide range of inks—including fast-drying formulations—while reducing the risk of nozzle clogging and minimizing routine maintenance such as cleaning at printer restart. Combined with a standard water-cooling system, it keeps the driver board and printhead at a constant temperature, ensuring consistent print quality throughout long, continuous, high-speed production runs. In addition, this model adopts the same electrical interface as the conventional KJ4B-1200, simplifying device integration and upgrades. With its balanced performance in resolution, speed, and reliability, the Kyocera KJ4B-EX1200-RC effectively boosts productivity and reduces maintenance workload, making it an ideal printhead choice for industrial digital printing equipment.
Applications: commercial printing, package printing, transaction/document printing, security printing, textile printing, and other industrial digital printing scenarios.
Ink recirculation
Keeps ink moving at the nozzle for fewer clogs and less cleaning.
80 kHz
2–4 pl greyscale drops at up to 101.6 m/min.
Water cooling
Holds the head and driver board at a constant temperature.
Same interface
Uses the same electrical interface as the KJ4B-1200.
Specifications
| Item | Specification |
|---|---|
| Ink Type | Water-based (including MICR magnetic ink) |
| Nozzles | 5,116 |
| Resolution | 1200 × 1200 dpi |
| Effective Print Width | 108.27 mm |
| Max. Drive Frequency | 80 kHz |
| Drop Volume | 2 – 4 pl (greyscale) |
| Max. Print Speed | 101.6 m/min |
| Ink Recirculation | Yes, at the nozzle |
| Cooling | Water cooling (standard) |
| Ink Viscosity | 5.0 – 6.0 mPa·s |
| Dimensions (W × D × H) | 200 × 55.5 × 79.1 mm |
| Country of Origin | Japan |
Not sure this is the right head for your printer?
Send Ewan your printer model on WhatsApp – he’ll confirm compatibility and reply with a quote, usually within a few hours.





