Epson ColorWorks C3400-LT Technical Reference Guide - Page 199

Appendix Paper type Form Backing paper width Label width Label length Gap between labels Edge cutoff on left/right side Label edge R Black mark width Black mark length Black mark centering position Black mark interval Paper thickness Roll paper core External diameter Winding direction Plain Media Roll paper 30 to 112 mm 25.4 to 108 mm 25.4 to 1117.6 mm (For the label length of 15 to less than 25.4 mm, use paper whose outer edges are removed only on the right and left.) 3 to 6 mm 2  0.5 mm 2 mm or less 13 mm or more 5 mm or more 8.5  1 mm 15 to 1117.6 mm 0.128 mm Outside diameter: 44.1 mm Maximum 101.6 mm Printing face must be facing outside.  Do not use the paper with a hole or cutout.  when using this type of paper, the label end and the black mark end of the black mark position on the die-cut label must be matched. 199