Epson TM-C7500 Series Technical Reference Manual page 191

Full-page label(Black mark)
Edge cutoff
Media type
Media source
Backing paper width
Label width
Right and left outer edges
Black mark width
Black mark length
Black mark position
Gaps between black marks
Paper thickness
Paper core
External diameter
Winding direction
 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.
Backing paper width
Edge cutoff
Label width
Plain label / Matte label / Synthetic label / Glossy label
Roll paper
50 mm to 112 mm {1.97 to 4.41"}
46 to 108 mm {1.81 to 4.25"}
2  0.5 mm {0.08  0.020"}
28 mm {1.10"} or more from paper edge
5 mm {0.20"} or more
Right edge of back of paper, when feed edge is at top
25.4 to 603 mm {1 to 23.74"}
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)
Internal diameter: 76.2  0.5 mm {3  0.020"}
External diameter: 82.2 mm {3.24"} or more
Maximum 203.2 mm {8"}
Printing face must be facing outside.
Appendix
Backing paper
Label area
191