Printech 12.7mm and 25.4mm On-Line Thermal InkJet Printer Model PO4-100 / PO4-200 and PO7-100 / PO7-200 comes in 4 Inch and 7 Inch Controllers respectively. Printech On-Line TIJ Printers enable marking with excellent resolutions on a wide range of surfaces. Printech On-Line TIJ Printers are able to print on a variety of substrates such as plastic, glass, metal and paper, making them suitable for printing on a wide range of products. Printech On-Line TIJ Printers can print at high speeds, making them suitable for high-volume printing applications.