Kyocera KJ4B-QA Printhead for Water-Based Ink Printers

Kyocera KJ4B-QA Printhead

The Kyocera KJ4B-QA printhead is designed for compatible industrial inkjet printing systems that use water-based (aqueous) ink. This single-colour printhead features 2,656 nozzles, a standard resolution of 600 × 600 dpi, and an effective print width of 108.25 mm.

With a maximum drive frequency of 30 kHz and a maximum printing speed of 75 m/min at 600 dpi, the Kyocera KJ4B-QA supports high-speed industrial inkjet printing. Its variable drop volumes of 5, 7, 12, and 18 pL provide flexibility for different printing requirements. The 18 pL drop volume is available at drive frequencies of up to 20 kHz only.

The Kyocera KJ4B-QA also features an integrated reservoir heater and thermistor for temperature control, along with internal filters to help prevent foreign objects from entering the ink supply. Its dedicated ink channel design supports stable ink delivery during operation.

Item Details

Brand	Kyocera
Model	KJ4B-QA — Standard Version
Configuration	Single colour
Ink Type	Water-based (aqueous) ink
Total Nozzles	2,656
Nozzle Pitch	0.042 mm
Standard Resolution	600 × 600 dpi
Effective Print Width	108.25 mm
Maximum Drive Frequency	30 kHz
Maximum Print Speed	75 m/min at 600 dpi
Drop Volumes	5 / 7 / 12 / 18 pL; 18 pL is available at frequencies up to 20 kHz only
Typical Ink Viscosity	5.0–6.0 mPa·s
Temperature Control	Integrated reservoir heater and thermistor
Internal Filters	Yes
Ink Supply	Dedicated ink channel design for stable supply
Input Voltage	3.3 V (logic) / 26 V (driving)
Dimensions (W × D × H)	200 × 25 × 59.3 mm
Country of Origin	Japan

Application

The Kyocera KJ4B-QA printhead is intended for compatible industrial inkjet printing systems that use water-based (aqueous) inks. Its 600 × 600 dpi resolution, single-colour configuration, and variable drop volumes make it suitable for applications requiring controlled ink deposition and high-speed printing. The integrated reservoir heater and thermistor support temperature control, while the internal filters help protect the ink supply from foreign objects.

For reliable operation, the ink viscosity and drive settings should remain within the specified operating requirements. The maximum stated printing speed is 75 m/min at 600 dpi, and the 18 pL drop volume is limited to drive frequencies of up to 20 kHz.

Condition

This Kyocera KJ4B-QA printhead is 100% genuine original Kyocera and brand new, according to the supplied product information. Please verify the model number and technical requirements before placing your order.

Compatibility

Compatibility depends on the printer model, electrical interface, ink delivery system, and operating parameters. The Kyocera KJ4B-QA is specified for water-based ink, with a typical ink viscosity of 5.0–6.0 mPa·s and input voltages of 3.3 V for logic and 26 V for driving. Before ordering, provide your printer brand and model to Glowyprint for a compatibility check. Do not assume that other Kyocera KJ4B series printheads are interchangeable without confirmation.

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