Hp 3210 URL for scanning

I have a Hp 3210 printer/scanner/copier. It works perfect with Ubuntu, but everytime I have to set it up for scanning i run into problems finding out what parameters I need to start xsane. Here's how to find the url:

Use the program hp-makeuri to generate the uri

$ hp-makeuri 192.168.1.20

the result is in my case:

SANE URI: hpaio:/net/Photosmart_3200_series?ip=192.168.1.20

Now xsane can be started with the uri as parameter:

xsane hpaio:/net/Photosmart_3200_series?ip=192.168.1.20