Mutoh rj-8000 water printhead (dx4) Description: Epson dx4 original, water-based print head suitable for roland, mutoh and mimaki water-based printers. The dx4 waterbased print head is the most popular print head used for water-based wide format printing applications. This is the original epson dx4 water-based printhead, delivered in a sealed roland original package. This print head is compatible with a wide range of printers as specified in compatibility. To be used with: Mutoh rj-8000; mimaki jv4, mimakijv22, mimakitx2; roland hifijet pro ii fj-540, roland hifijet pro ii fj-740