HP LaserJet 6L Pro Printer - Manual (Page 39)

EN Printing on special media 37
Additional tips for transparencies
To prevent transparency curl, remove the transparency as it comes
out of the printer and set it on a flat surface to cool.
WARNING! Use only transparencies specified for HP LaserJet printers.
Additional tips for printing labels
● Do not use labels that are separating from the backing sheet or
that are wrinkled or damaged in any way.
● Do not use any sheet of labels that has spaces in it where some
of the labels have been removed.
● Do not feed a sheet of labels through your printer more than
once.
Note Use only labels specified for HP LaserJet printers.