Canon printers utilize a waste ink absorber pad to catch ink expelled during cleaning cycles. To prevent overflow and potential damage to the printer's internal mechanics, the printer's firmware maintains a counter that estimates the saturation level of these pads. When this counter reaches a predefined threshold, the printer ceases operation and displays an error (commonly Error 5B00 or "Ink Absorber Full").
Recommendation
Version 1.050 is primarily designed for entry-level and mid-range Canon PIXMA printers released roughly between 2014 and 2017. The most common compatible models include: Canon service mode tool version 1.050