Hi there and welcome
Can you please put a different toner cartridge into the printer.
Once done, tell me please how it prints with this
Let me know the results please.
Can you remove the toner from the printer then power it off and open it up
Then use a damp cloth and wipe down the inside of the printer, all; rollers and areas where the paper feeds
Once done, let it dry for 10 minutes
Then put the ink back in, power it on and tell me if it then prints correctly please
It is the internal ink system that has faulted and is leaking
I am really sorry about this and you are going to have to return the printer to have this replaced. It will be covered by the warranty if this has not expired, and the replacement will be done at no cost to you.
I am really sorry about this, and if you have problems, or would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service by clicking one of the stars at the top of the page, then submit, that would be greatly appreciated.