Highest Print Quality 35pl drop size 180dpi native resolution Consistent drop placement. Increased Productivity 9.5kHz firing frequency Wide 53.7mm print swathe. Simplest Integration Self-initialising on start-up Lockable fluid and electrical connections On-board waveform and temperature compensation Simple pressure prime to fill. Simple to install and easy to integrate are the two key characteristics of the Xaar Proton printhead. Using the same electronics as the Xaar 500 ( similar to the Xaar 126 electronics) the Xaar Proton provides existing Xaar customers an easy integration path with minimal product development.