canon np 4050

[Guest]

when i try to make a copy each time a black mark comes out across the copyed paper.
what cause this.?

[Brian8506]

You need to be a little more specific. Is it a line across the page? If so, isolate to drum or fuser. This sounds like troubleshooting 101.

[leegodfrey]

You need to be a little more specific. Is it a line across the page? If so, isolate to drum or fuser. This sounds like troubleshooting 101.

yes it is across the paper

[mrfixit51]

still too vague...

yes it is across the paper

Scan a page of it and post it here so we can see it. Your description is not very specific.