Epson TM-C3500 Series Technical Reference Manual page 36

Form of perforated line
 Do not use the paper with a hole or cutout.
 If the backing is synthetic media or film, it will be difficult to cut by hand even if there is a
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Plain media : 1 mm {0.039"} uncut, 5 mm {0.2"} cut
Fine media : 1 mm {0.039"} uncut, 5 mm {0.2"} cut
PET film
perforation, so do not use the perforation.
: 0.6 mm uncut, 8.4 mm cut