can't install hp 2050 on my ubuntu

[Luis Vega]

<autodetect>
  <usb>
    <commandset>PCL,DW-PCL,DESKJET,DYN</commandset>
    <description>CH355B</description>
    <manufacturer>HP</manufacturer>
    <model>Deskjet 2050 J510 series</model>
  </usb>
</autodetect>