I had the same issue in Vista 32-bit with the new full software. The solution
is in this thread:
http://www.microsoft.com/communities...=en-us&m=1&p=1
"helpherb" wrote:
> Using HP 7310 with Vista 64 bit and the new "full feature" drivers (downloads
> a file named AIO_CDB_Full_Network_enu.exe).
>
> Duplex printing still "flips the pages up" like the page is bound at the
> top, rather than being able to turn the page over like reading a book--this
> happens no matter what setting I select.
>
> Has anyone been able to solve this problem? If it's a driver bug it seems
> like it could be a long wait since these drivers were just released (I've
> found tech support not very helpful--they couldn't even figure out how to get
> dubplexing to work--I found that on this forum).
>
> Thanks!