How to Clean Riso ComColor Printer Sensor | Fix Error x01-1050, x02-1058 & x02-1100

二，What Causes the Sensor to Trigger These Error Codes?

2.1 The paper head sensor and second paper feed sensor in your Riso ComColor printer are optical components. They detect paper position and feed status during every print cycle. Over time, three things cause them to malfunction:

• Ink residue — fine ink mist settles on the sensor surface during high-volume printing
• Paper dust — paper fibers accumulate on the lens with every sheet fed through
• Environmental dust — particles in the air build up gradually, especially in poorly ventilated rooms

When the sensor lens is blocked, the printer cannot read paper position accurately and throws error codes x01-1050, x02-1058, or x02-1100 as a safety stop.

2.2How Often Should You Clean the Riso ComColor Sensor?

Cleaning frequency depends on your print volume:

If error codes appear more frequently than usual, clean the sensor immediately regardless of schedule. Early cleaning takes 5 minutes — waiting until a full error stop costs more downtime.