Description:

PPA (Printing Performance Architecture) is a closed, proprietary protocol
developed by Hewlett Packard for a short-lived series of DeskJet printers. In
essence, the PPA protocol moves the low-level processing of the data to the
host computer rather than the printer. This allows for a low-cost (to produce)
printer with a small amount of memory and computing power. However, in practice
the printer was often as expensive as more capable printers and HP has since
discontinued the use of PPA in favour of returning to PCL3e in their latest
USB-based printers.