MP7 Highres Marking on CJ Flour Sack

They are Korea No.1 flour manufacturer called CJ. Inter Mac installed our own High Resolution Inkjet Printer, MP7, with wave utility bracket. The flour sack is uneven surface so wave utility bracket help to keep the same distance between printhead and marking surface. Their daily output is very huge so they're operating printer all day. This is the reason why it is very difficult to use cartridge type TIJ Printer. There is no need to replace cartridge frequently.