Epson C7500G Technical Reference Guide - Page 191

Full-page label(Black mark) Backing paper width Appendix Media type Edge cutoff Label width Edge cutoff Backing paper Label area Plain label / Matte label / Synthetic label / Glossy label Media source Roll paper Backing paper width 50 mm to 112 mm {1.97 to 4.41"} Label width 46 to 108 mm {1.81 to 4.25"} Right and left outer edges 2  0.5 mm {0.08  0.020"} Black mark width 28 mm {1.10"} or more from paper edge Black mark length 5 mm {0.20"} or more Black mark position Right edge of back of paper, when feed edge is at top Gaps between black marks 25.4 to 603 mm {1 to 23.74"} Paper thickness Plain label/ matte label/ synthetic label: 0.129 to 0.236 mm {0.005 to 0.009"} (reference values) Glossy label: 0.167 to 0.182 mm {0.007 to 0.007"} (reference values) Paper core Internal diameter: 76.2  0.5 mm {3  0.020"} External diameter: 82.2 mm {3.24"} or more External diameter Maximum 203.2 mm {8"} Winding direction Printing face must be facing outside.  Do not use the paper with a hole or cutout.  To prevent glue from sticking to the roll paper supply unit, use label paper whose outer edges are removed only on the right and left. 191