Scanned @ 2400dpi, exporting to TIF, with -30 brightness and +10 contrast (trial and error says that this normally the best choice for this print- having scanned it about 20 times now)

This is definitely a real scan, not a preview.

The scanner is an HP multifunction printer, an HP Photosmart C4180. Chosen because it supposedly has a pretty good scanner for an all-in-one. The scan bed was just cleaned with windex before this scan, and blown off just before I put tee print down with some canned air.