Epson TM-C3500 Series Technical Reference Manual page 173

Chapter 3 Handling
70 mm (Backing paper width)
66.0 mm (Label width including fringes)
63.0 mm (Print area width)
60.0 mm (Label width)
Paper feeding direction
3
1.5 mm 1.5 mm
1.5 mm 1.5 mm
2.0 mm 2.0 mm
Print area specified in [User Defined Media Layout] in the printer
driver
Printing data position
(Top: 63.0 × 38.0 mm rectangular/Bottom: 63.0 × 38.0 mm oval)
Label area
Backing paper
Black mark position
173