Epson C3500 Technical Reference Guide - Page 209

Die-cut label(Gap) Backing paper width Chapter 6 Appendix Gap between Label length labels Edge R Backing paper Label area Edge cutoff Label width Edge cutoff Media type Plain label / Matte label / Synthetic label / Glossy label Media source Roll paper Backing paper width 30 to 112 mm {1.18 to 4.41"} Label width 25.4 to 108 mm {1 to 4.25"} Label length 8 to 1,117.6 mm {0.32 to 44"} Gap between labels 3 to 6 mm {0.12 to 0.24"} Left and right outer edges 2 mm  0.5 mm {0.079  0.02"} Label edge R 1.5 mm {0.059"} or less Paper thickness Plain label / Matte label / Synthetic label:  0.129 to 0.195 mm {0.005 to 0.008"} Glossy label:  0.184mm {0.007"} 5 Paper core Plan label / Synthetic label:  External diameter: 44.1 mm {1.74"} or more Matte label / Glossy label:  External diameter: 56.8 mm {2.24"} or more External diameter Maximum 101.6 mm {4"} Winding direction Printing face must be facing outside. Form of perforated line 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 : 0.6 mm uncut, 8.4 mm cut  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 perforation, so do not use the perforation. 209