Looks like the imaging unit has past its counter on the Konica Minolta Magicolor 7450... Has anyone experienced these lovely resetting devices for the image units? I feel that the well over £200 price mark for a new imaging unit is a bit steep when we were noticing no print quality defects just before it decided to go! Plus this is the first one that has gone and there are 4 in the printer, one for each color! O dear Anyone got any cheaper options (or cheaper I-Units avail )