With {HEAD ~ the arrangement} of {TAIL ~ the smaller diameter drive surface} 30 and the larger diameter slip surfaces 32, the marker tubing stock 20 and the carrier 22 can be positioned in a substantially common plane as the product passes the print head 26 
With { HEAD ~ the arrangement } of { TAIL ~ the smaller diameter drive surface } 30 and the larger diameter slip surfaces 32 , the marker tubing stock 20 and the carrier 22 can be positioned in a substantially common plane as the product passes the print head 26
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH