Epson ColorWorks C3500 Technical Reference Guide - Page 227

Die-cut label (Blackmark) / Fanfold paper When "Borderless Printing" is disabled Top, bottom, left, right margins: 1.5 mm (Typical value) Center of paper width Perforated line Auto-cut position Paper width 0.5 to 1.0 mm 1.5 mm 1.5 to 3.0 mm Chapter 6 Appendix Paper feeding direction Interval of perforated lines (Pm) 12.0 mm or more*1 15.0 mm or more*2 18.0 mm or more*3 Issuing pitch (Ph) Auto-cut position 1.5 to 3.0 mm 1.5 mm 1.5 to 3.0 mm Perforated line Auto-cut position 1.5 mm Edge cutoff 2.0 mm Print area width 1.5 mm Edge cutoff 2.0 mm Print area 5 Label area Backing paper Black mark position *1 When auto cut is not performed: 5.0 mm or more *2 When auto cut is not performed: 8.0 mm or more *3 When auto cut is not performed:11.0 mm or more  Make sure to adjust perforated lines to an integral multiple of issuing pitch.  The perforated line and print area overlap each other to destabilize printing or perforated line and the auto-cut position are misaligned to shorten the life of the autocutter if paper without black marks is used. Use paper with black marks on the back of the paper to adjust the paper position. 227