SATO FX3-LX Operator's Manual page 467

Error Message 1035 (I-mark Not Found)
When there is an error with the printer, the error message appears on the screen.
Check the cause and countermeasure, and then take appropriate action.
To clear the error:
Open/close the top cover or tap [OFFLINE].
Cause and Countermeasure
Cause (1)
Meandering media.
Countermeasure (1)
Load the media correctly.
Loading the Media
Cause (2)
A label is attached to the media sensor.
Countermeasure (2)
Clean the media sensor.
Cleaning Using the Cleaning Kit
467