I have an HP PhotoSmart C4280 (printer, scanner, copier). I am contemplating buying a time capsule, for reasons other than the printer sharing, but will I be able to still print and scan if I attach this to the time capsule?
Considering the printer the OP is asking about does not have an ethernet port, I'd say that my original assessment stands. Neither the Airport Extreme nor Time Capsule allow bi-directional USB communications.
Any wireless router can print/scan wirelessly if using a printer/scanner connected via ethernet, it's simply another network device.