Kyocera KJ4B-QL Industrial Inkjet Printhead – 600 dpi, Water-Based – High Speed

Kyocera KJ4B-QL is a professional industrial inkjet printhead designed for high-speed single-pass and multi-pass printing with water-based inks. It belongs to Kyocera’s KJ4B series, which is widely used in transaction printing, documents, textiles, and other industrial applications that require reliable, continuous production.

This head delivers 600 dpi native resolution with a maximum drive frequency of 30 kHz, enabling fast throughput while maintaining sharp image quality. It supports variable drop sizes in the range of approximately 5–18 picoliters (depending on drive conditions), making it suitable for both fine details and solid fills.

The KJ4B-QL uses Kyocera’s piezoelectric technology and ceramic construction for excellent durability and long service life in demanding production environments. It is part of the water-compatible KJ4B family, optimized for aqueous inks with stable performance over extended runs.

Key Features

•     Printhead model: Kyocera KJ4B-QL (water-based ink type).
•     Ink type: Aqueous / water-based inks.
•     Native resolution: 600 × 600 dpi standard.
•     Maximum drive frequency: up to 30 kHz for high-speed operation.
•     Drop volume: variable, typically 5 / 7 / 12 / 18 pL (18 pL available under reduced drive frequency).
•     Total nozzles: KJ4B series heads feature 2,656 nozzles providing wide coverage and high productivity.
•     Effective print width: approximately 108 mm (4.25") in the KJ4B family, allowing wide coverage with fewer heads.
•     Designed for: high-speed single-pass and multi-pass systems using water-based ink.
•     Typical applications: transaction and document printing, textiles, and other industrial aqueous ink systems.

Physical Specifications

(Values for the KJ4B standard water-based configuration; KJ4B-QL follows the same series design.)

•     Dimensions (W × D × H): approx. 200 × 25 × 59.3 mm.
•     Dry weight: approx. 420 g.
•     Construction: piezoelectric ceramic actuator-based industrial printhead.

Compatibility

•     Ink compatibility: Water-based / aqueous inks in systems designed for Kyocera KJ4B series heads.
•     Typical use in: high-speed production inkjet printers, textile printers, and other industrial equipment specified for KJ4B-QL or KJ4B series.
•     Please check with your printer manufacturer or service provider to confirm compatibility with your specific machine model.

Condition

•     Condition: New.
•     Included: 1 × Kyocera KJ4B-QL printhead (no cables, mounts, or additional accessories unless otherwise specified).

Notes for our Customers

•     Professional installation is strongly recommended; improper handling can damage the printhead.
•     Make sure your printer is configured for Kyocera KJ4B-QL and water-based inks before purchase.
•     All technical specifications are provided for guidance only; refer to Kyocera documentation or your OEM for exact integration parameters