Hi, I solved my problem installing turboprint for Linux (www.turboprint.de). 
Yes I know that is not an open source software, but with a shareware license 
it seems to work fine.
If there is anybody who will find an open source solution, it will be 
welcome! By the way I start printing...
Thanks to everybody helped me

Maurizio

12/06, Maurizio Martinelli <[log in to unmask]> wrote:
> Hi, I have a Canon MP170 printer: it's a multifunction printer. The system
> (SL4.4) recognise it but doesn't have the drivers to print(and Canon 
> doesn't
> release any for Linux). I just want to use the printer function. Can 
> anybody
> suggest me the right way?