When Canon IB4040 triggers an ink absorber full condition, the printer may block printing as a protective measure. The solution is typically a waste ink counter reset.

Ink absorber pads store waste ink during normal operation. Canon firmware tracks this using a software counter and may stop printing when it reaches the limit.

This page is prepared for Canon IB4040. Service mode instructions are shown only when a matching series procedure is known.

Typical Signs

• Service / maintenance warning on the screen or driver
• Printer refuses to print even with ink available
• Blinking lights and queued jobs fail
• Error reappears after restart

Perform the Waste Ink Counter Reset

Completing the reset clears the internal ink absorber counter stored in printer memory and restores normal operation.

Important Notes

Treat the reset as a maintenance step. If your printer has extremely high usage, consider cleaning/replacing absorber pads to avoid overflow.

Need a reset solution?

For best results, avoid rushing button presses—consistent timing matters.

Troubleshooting

• Try a different USB cable/port if using PC software.
• Repeat the service mode steps carefully (timing matters).
• Close other Canon printer utilities while resetting.
• Power-cycle the printer and try again.
• Use the correct Stop/Reset press count for your series.