I've tried the firmware, main PCB, laser unit, laser unit drive board, all imaging unit, black drum, developer unit, transfer belt, and transfer belt drive unit. This happens during only the trailing 3-4' and only in green and blue. Place the order for this Fuser unit right now to restore the high end performance of your Konica Minolta Bizhub C452 copier at the lowest possible price. Part number of this Fuser unit is A0P0R73366. The trailing 4' of the blue and green you can see the black 'showing as a light gray on print' starts slowing separating out so that by the end it is mis-registered by about 2mm. This high quality Fuser unit is designed for long term productivity and you can expect a higher yield from its single unit. When I print it out I get this problem - the black, red, light blue, and orange all print fine. I created an 11 x 17 text document with lines of text - about 3-4 lines of different colors text -black, blue, red, orange, light blue and green. Tried scanning but the light gray part of the issue doesn't show up, so here's my best description Can only see this issue when printing on 11 x 17 paper.

Got a bizhub C452 with about 400,000 prints total.

Bizhub c452 fuser