I have a HP 6400 printer added to my laptop. I purchased a HP 1522 a few months ago and just now added it to this laptop. I can scan from the first printer I added (HP6400), but cannot scan from the second (HP1522). The HP tech support people said I can only scan from the first printer I added because of a conflict between the two drivers. When I said, in effect HP is telling me I should have purchased a competitor printer if I wished to scan from it, they said that unfortunately that is correct. Is what they say true? How can I scan from both printers? Does anyone have any answers?