The Epson DX5 water-based printhead is used by different printer manufacturers as described in the printer compatibility. The Epson DX5 has a native resolution of 1440dpi, 8 nozzle lines and 180 nozzles per line.
The Epson DX4 water-based printhead is suitable for Roland, Mutoh and
Mimaki water-based printers. The Epson DX4 printhead has a native
resolution of 360 dpi, 2 nozzle lines (corresponding with 2 independent
ink channels) and 180 nozzles per line.