The EPSON DX7 Golden head Micro Piezo Printing Technology As the advanced version of the DX-5 head, Golden head DX7 stands for the better reliability and stability. Besides better ink droplets and consistency, the working life of the print head has improved dramatically. The Golden head DX7 is much more durable than standard DX5 for the eco-solvent ink printing. XENONS printer is equipped with two high efficient golden print heads, and it is proved to have 15% print speed increasing.