I'm still using Safari 1.0, so I don't know if 1.1 has corrected this issue. I can't seem to find a way to turn off shrink to fit in Safari. Most every application has an application specific menu item in the print dialog that lets you turn the feature on and off.
This was a particular bothersome oversight since I had to open the pages I needed to print in a different browser, and because of CGI scripting simply copying the URLs wouldn't bring me back to the pages I needed.