... the print head, is not easy to spread, Wax barcode printer ribbon:Thermal transfer or thermal printing ribbon ... ,material are resin,wax and max.1.Suitable medium:coated paper and tag ... length. 3.Basic width(mm)40,50,60,70,80,90,110Basic length(m)90,300,450,600Carton ... effective protection of back printed head6.That is to wax and carbon black(assuming a black ribbon) as ...