Epson ColorWorks C3400-LT Technical Reference Guide - Page 192

Black mark length Black Mark Receipt Center of black marks Center of paper width Center of paper width Paper feeding direction Interval of black marks Perforation position 0.5 mm or more (When using fanfold paper) Black mark width Paper type Form Paper width Paper length Black mark width Black mark length Black mark centering position Black mark interval Paper thickness Roll paper core External diameter Winding direction Plain Media, Fine Media, PET Film Roll paper 30 to 108 mm 15 to 1117.6 mm 13 mm or more 5 mm or more 8.5  1 mm 15 to 1117.6 mm 0.085 to 0.151 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. Black mark receipt 192