Epson LQ-510 User Manual page 64

You load labels the same way that you load continuous paper
except that the paper thickness lever must be adjusted for printing
labels. See the section on loading continuous paper earlier in this
chapter. For the correct paper thickness setting, see the table on
page 2-22.
WARNING: Never feed labels backward through the
printer. Labels can easily peel off the backing and jam the
printer. Therefore, never use the LOAD/EJECT button to
eject labels. Also, never use the short tear-off function with
labels. (Be sure to set DIP switch 2-2 to OFF.) If a label
does become stuck in the printer, contact your Epson
dealer.
Since labels are especially sensitive to temperature and
humidity, always use them under normal operating
conditions. Don't leave labels loaded in the printer
between jobs; they curl around the platen and may jam
when you resume printing.
Printing on Special Paper
Paper Handling 2-25