HP Fuser Assembly for P4014/4015/P4515

Most printers have a paper-out detector. On most dot matrix printers it is a photo diode. If form-fed paper is not aligned correctly (usually on the left side) the diode won't see it.

Flashing light on your printer? Each printer has a different reason for a blinking or orange light but in general it is due to a paper jam, an empty paper tray, a printer cartridge problem or a problem with the printer hardware.

Is your printer feeding in the whole paper stack rather than just one piece at a time? Fan the paper before putting it in the tray to help separate the sheets. Also, store your paper in a cool, dry place as humidity can contribute to this problem.