A:Answer Yes, the ADF works well so far. One of the reasons I chose this printer is it has the fairly-rare feature of being able to simultaneously scan BOTH sides of a page as it goes through the ADF. So unlike my old printer, it doesn't have to eject, flip, and re-load each page. It's therefore faster and theoretically much less likely to jam in the ADF.
Despite others reporting problems with the software side of scanning, I've had no problems with it. It's also easy to insert a USB flash drive and scan directly to that. Multi-page documents can quickly become a single PDF or other file types.
With my old Brother MFC, the ADF scanner never jammed, but it had the design flaw that everything would come out skewed. This HP seems to have good automatic de-skewing.
As for copying, I've done that a couple times so far and it did so well that the copy was virtually indistinguishable from the original.