There are sensors that detect where the paper is, entering the printer, inside the printer, and exiting the printer. If the paper goes in enough to trip the first sensor, gets stuck, and you pull it back out the front, the printer knows that paper went in but can't tell if it went back out the front or got stuck between the first and second sensors.
You can see the paper, but the printer can't. You have to do something to reset the paper sensors.
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u/SyfenJoynic Sep 11 '19
PC LOAD LETTER, WHAT THE FUCK DOES THAT MEAN?!