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On the next page scroll down until "Scanner driver". Select the proper distribution and version (when writing this answer, 12.04 isn't present, choose 11.10). Scroll down until you reach "Form for download" part. So, what you should do are the following. Until today, when I've found an extensive guide – but it works! (And then I've started to look for unanswered questions like this. I've searched for a solution but none of them worked. HOWEVER, I've had the same problem with the scanner part. (TwoD has successfully used the printer part.) Well, I've got the same type of all-in-one, but I don't use the printer part because it has got problem – so I haven't even tried to print with it, so this part of the question I can't answer.
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