Epson TM-C3500 Series Developer's Manual page 18

Barcode Print Direction
Barcode print direction and name are as follows.
Fence barcode
Ladder barcode
8 1 0 1 0 5 4 3 2 1 1 2 0 0
When printing ladder barcodes, it may not be possible to read the barcode with a barcode
reader if printed straddling the feeding position. (U"Checking the Feeding Position" on page
35) For this reason, it is recommended to use fence barcodes or set the Print Quality to
Quality (Mode2).
18