[Misc] MPC 4500 print not even

[adween shaari]

my machine when use print colour not even on top. can someone give me a solution.

[Lagonda]

Re: MPC 4500 print not even

I suspect it is the same problem as the post about light copies on a MP C3500. Check the transfer roller is parallel with the contact point on the Image Transfer Belt.

[sandmanmac]

Re: MPC 4500 print not even

my machine when use print colour not even on top. can someone give me a solution.

And you have done what exactly to try and help yourself and resolve the problem?
Looks like a fusing issue to me

[adween shaari]

Re: MPC 4500 print not even

And you have done what exactly to try and help yourself and resolve the problem?
Looks like a fusing issue to me

i change already all fusing parts except stripper. use original pressure roller, fusing belt and new oil web still same.

[sandmanmac]

Re: MPC 4500 print not even

i change already all fusing parts except stripper. use original pressure roller, fusing belt and new oil web still same.

So what does the image look like on the transfer belt if you stop the copy? what about single colours? black only? how are the dev units? Drum units? laser shields.
Man, it's like pulling teeth to get any extra info.

[ruben]

Re: MPC 4500 print not even

If you have replaced the fuser, check the ITB then finally that the TX roller is seated properly. Run multiple sky shots on A3 to see if the uneveness moves. These models suffer from fragile resin on the TX roller lower case and upper holder, both of which have been modified.

[Gweeds]

Re: MPC 4500 print not even

If you have replaced the fuser, check the ITB then finally that the TX roller is seated properly. Run multiple sky shots on A3 to see if the uneveness moves. These models suffer from fragile resin on the TX roller lower case and upper holder, both of which have been modified.

I'd second that. It looks like transfer roller issues to me. Check for cracking in the brackets of the main frame where the transfer roller seats. Just by the transfer belt

[karan shetty]

Re: MPC 4500 print not even

check charge roller of BLK and Cyan PCU unit.

if it is dusty clean the charge roller with wet cloth

[teebee1234]

Re: MPC 4500 print not even

check charge roller of BLK and Cyan PCU unit.

if it is dusty clean the charge roller with wet cloth

I'm starting to see a pattern with your posts, meaning you just throw anything out there and making me think you don't have a lot of knowledge of how these things work. On another post you suggest to do a full memory clear and or replace the fuser thermostats for a J001 jam code. For this particular problem, a charge roller issue will give you dark marks/lines/bands- not light areas.

[teebee1234]

Re: MPC 4500 print not even

What is the direction of paper travel on your example. Is the light area the lead, trail or side edge? I can't really discern the paper size. Also, can you please clarify that it does it from print jobs as well as copies or copies only.

[Gift]

Re: MPC 4500 print not even

Stop the print before the fuser and see if the symptome is still visible to rule out the fuser. I've seen dirty polygon motor mirrors causing pretty related issues on this machine - cleaning is pretty easy to do.

[Maxim]

Re: MPC 4500 print not even

Looks like either poor fusing or transfer roller is not sitting properly.
I would try changing the paper setting from plain to thick1, if the image is ok now then it would be poor fusing.

I had something similar when the C-clip and the bearing came off on one side of the hot roller.