3245C when printing only in colour last inch is double printed

[Rick]

I dont have a clue to why this would onle do this in a colour print job. Copying in colour is fine but when you print to it the last inch has a double image only in the black part of the document. Any ideas anyone?

[tinfox]

Did you try swapping drum units with one of the colors? Also when you copy on the glass is the paper going in the same direction as it is when you print?

[Rick]

I will try a different drum unit and check the paper direction tomorow . Thank you.

[teebee1234]

Are you saying the black portion of the process is offset from the colors (say a 4 color image is fine until the trail edge)? It may be the lead edge of the paper is buckling at the fuser, causing the black to shift. Check the distance from the blur to the lead edge and see if it corresponds to the distance between the black pcu and fuser entrance. Post a sample if you can, thanks.

[Rick]

This only happens when printing in colour not copying .

[teebee1234]

This only happens when printing in colour not copying .

Sorry, I missed that. It most likely then is occuring in the controller, IPU or BCU. Those are the 3 processors that the printing function uses. This is kind of a strange one....