Kyocera KJ4B-QA Original Water-Based Inkjet Printhead 600 DPI
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$1,491.16
Original Kyocera KJ4B-QA aqueous piezo inkjet printhead designed for high-speed water-based ink applications. Features native 600 × 600 dpi resolution, 2,656 nozzles across a 108.25 mm effective print width, variable drop volumes of 5–18 pL, maximum drive frequency of 30 kHz and print speeds up to 75 m/min, making it suitable for textile, document, transaction and industrial paper printing systems.
The Kyocera KJ4B-QA is an original genuine industrial piezo inkjet printhead belonging to the KJ4B series. It is specifically engineered for high-speed printing with water-based (aqueous) inks and is widely adopted in textile printing, document printing, transaction printing, MICR applications and multi-pass industrial systems. The printhead incorporates internal filters that prevent foreign particles from reaching the nozzle plate and an integrated reservoir heater with thermistor for precise temperature control, ensuring stable jetting performance under varying environmental conditions.
This standard model delivers native 600 × 600 dpi resolution across an effective print width of 108.25 mm. It utilises 2,656 nozzles (approximately 2,558 active within the effective print area) arranged at a nozzle pitch of 0.042 mm. Maximum drive frequency is 30 kHz, supporting a maximum print speed of 75 m/min. Drop volumes are selectable at 5 pL, 7 pL, 12 pL and 18 pL, with the 18 pL drop limited to drive frequencies of 20 kHz or lower. Recommended ink viscosity range is 5.0–6.0 mPa·s. Physical dimensions are 200 × 25 × 59.3 mm (W × D × H) with a dry weight of approximately 420 g. The head does not incorporate nozzle recirculation.
Important Variant Information
Multiple hardware variants of the KJ4B-QA exist (Standard, MS Italy, and EFI/Reggiani versions). These variants are not interchangeable. The specifications and listing below refer to the Standard version commonly used for textile and general industrial systems. Always confirm the exact variant required by your printer manufacturer before ordering. Replacement of the associated flexible head cables is strongly recommended when installing a new printhead.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Kyocera |
| Model / Part Number | KJ4B-QA (Standard) |
| Technology | Piezoelectric |
| Ink Type | Aqueous / Water-based |
| Native Resolution | 600 × 600 dpi |
| Total Nozzles | 2,656 |
| Active Nozzles (approx.) | 2,558 |
| Nozzle Pitch | 0.042 mm |
| Effective Print Width | 108.25 mm |
| Maximum Drive Frequency | 30 kHz |
| Maximum Print Speed | 75 m/min |
| Drop Volume | 5 / 7 / 12 / 18 pL (18 pL limited to ≤20 kHz) |
| Recommended Ink Viscosity | 5.0–6.0 mPa·s |
| Temperature Control | Integrated reservoir heater + thermistor |
| Internal Filters | Yes |
| Nozzle Recirculation | No |
| Dimensions (W × D × H) | 200 × 25 × 59.3 mm |
| Dry Weight | Approx. 420 g |
| Country of Origin | Japan |
Applications
High-speed single-pass and multi-pass printing on textiles, paper, documents, transaction materials and industrial substrates using aqueous inks. Suitable for systems requiring consistent drop volume control and reliable long-term operation.
Compatibility Notes
This Standard variant is used in selected industrial textile and paper printing systems (examples include certain Xerox Rialto, Atexco and other OEM platforms). Specific MS Italy and EFI/Reggiani variants exist and are electrically and mechanically different. Full system-level compatibility (head interface board, waveform, drive voltage, cables, firmware and ink delivery system) must be confirmed with the printer manufacturer or system integrator prior to installation. Physical dimensions alone do not guarantee electrical or fluidic compatibility.
Operational Recommendations
- Always handle the printhead while wearing a grounded anti-static ESD wrist strap.
- Power down the complete system before connecting or disconnecting any flexible cables.
- Thoroughly flush the ink channels with an approved cleaning solution before first use or after prolonged storage.
- Use only aqueous inks within the recommended viscosity range of 5.0–6.0 mPa·s.
- Replace the associated head cables at the same time as the printhead to minimise connection-related issues.
Warranty
Store Warranty: 30 Business Days After Delivery. Eligible claims for damage on arrival, defective product, non-functioning product, incorrect item or missing components require: (1) a continuous uninterrupted unboxing video, (2) clear evidence of the shipping package and shipping label, (3) clear evidence of the product condition, and (4) for functionality claims, a video showing initial installation and operation performed by a qualified technician. All claims remain subject to verification. When approved, a 100% money-back refund without deduction is provided. Manufacturer Warranty: Not publicly specified by Kyocera. Warranty expressly excludes defects related to the use of non-original inks, clogged/missing/deviated nozzles, misuse, abuse, neglect, improper storage, lack of prescribed maintenance, operation for unintended purposes, third-party applications/software/parts/components or bulk ink systems, and purely cosmetic issues.
This is a genuine original Kyocera OEM printhead. Proper system integration, approved inks and correct handling procedures are essential for optimal performance and service life.
Kyocera KJ4B-QA Water-Based
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