ribbon-errorTEC B-EX4T2

Toshiba TEC B-EX4T2 ribbon error: Technical guide

The Toshiba TEC B-EX4T2 ribbon error indicates that the printer cannot detect the presence or movement of the thermal transfer ribbon. This is a common issue that occurs if the ribbon is broken, missing, or if the sensor is obstructed by debris. Addressing this issue restores printing functionality.

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Common causes

  • 1Ribbon break or depletion.
  • 2Dirty ribbon sensor path.
  • 3Improper core seating on spindles.
  • 4Sensor hardware failure.

Solutions

Diagnóstico rápido

The error appears when the printer attempts a print cycle but detects no ribbon movement. Check for debris wrapping around the ribbon take-up motor.

Solución paso a paso

  1. Check ribbon: Inspect for breaks.
  2. Inspect sensors: Clean the ribbon sensor path.
  3. Reseat: Ensure the core is locked.
  4. Calibrate: Run calibration from the menu.

Prevención y mantenimiento

Use original supplies for better traction. Maintain clean rollers and sensor areas to prevent buildup.

Cuándo llamar a un técnico

If sensor calibration fails, the internal hardware component responsible for ribbon detection may require replacement.

Ficha técnica del equipo

  • Technology: Thermal transfer.
  • Speed: 14 ips.
  • Connectivity: USB, Ethernet, Serial.
  • Feeding: Supports 800m ribbons.
  • Consumibles: Wax/Resin/Wax-Resin ribbons.
  • Usage: Industrial.
  • Official drivers / firmware

Steps to follow

  1. 1

    Check ribbon

    Ensure the ribbon is not snapped or improperly tensioned on the spools.

  2. 2

    Inspect sensors

    Verify the ribbon sensor is clean and free of dust.

  3. 3

    Reseat

    Make sure the ribbon core is correctly locked onto the support hubs.

  4. 4

    Calibrate

    Run the sensor calibration process from the printer's menu.

Frequently asked questions

The error triggers when the printer fails to detect ribbon movement, usually due to a broken ribbon or a dirty sensor.

Yes, printing will fail until the error is resolved as thermal transfer requires the ribbon to be moving correctly.

Always use original wax, resin, or wax-resin ribbons. Poor quality ribbons can slip and trigger false alerts.

Keep the ribbon path and sensor clean and ensure the ribbon is tensioned correctly during installation.