Epson SJMB4000 Maintenance Box for CW-C4000 Series Printers

SJMB4000 Maintenance Box

The Epson SJMB4000 Maintenance Box functions as a critical technical component for maintaining the operational integrity of the ColorWorks CW-C4000 series inkjet label printers. This hardware unit collects waste ink generated during the automated printhead cleaning cycles and standard initialization procedures. Consequently, it prevents internal contamination and ensures the high-precision piezo-electric nozzles remain free from dried pigment or debris. The printer utilizes an internal sensor system to monitor the saturation level of the absorbent material within this module. Therefore, procurement managers must maintain inventory of these units to prevent unplanned production downtime when the system reaches its absorption capacity.

Key Features

• Integrated Smart Chip Technology
  The unit includes an onboard IC chip that communicates real-time capacity data to the printer firmware for accurate life-cycle tracking.

• High-Density Absorbent Architecture

  • Utilizes multi-layered porous fibers to secure liquid waste ink effectively.
  • Prevents leakage during high-volume industrial printing operations.

• User-Replaceable Design
  The mechanical housing allows for rapid installation without specialized tools or the need for a certified service technician.

Specifications

What’s in the Box

• 1 x Epson SJMB4000 Maintenance Unit (C33S021601)

• Installation Guide

• Plastic Disposal Bag for Spent Unit

Why Choose This Maintenance Unit

• Original equipment manufacturer engineering ensures 100% compatibility with the CW-C4000 series electronics and fluid systems.

• The system triggers a proactive warning before the tank reaches full capacity to allow for scheduled maintenance.

• Additionally, using genuine components maintains the validity of the manufacturer warranty on the printhead assembly.

• Proper waste containment reduces the risk of aerosolized ink particles affecting sensitive internal optical sensors.