My samsung mfp 750 series is printing ugly dark blotches along the middle of my pages. How do I stop this?

I have a Samsung Msys 755P and it is printing out ink blots about the size of a dime in succession down the middle of all pages I print.





Please help. What can I do to correct this problem?





Thanks!|||This is typically a problem with the toner cartridge. If you haven't already, you should replace the toner cartridge. If that doesn't fix it, then it's a more serious problem with the printer and you should look into professional repair or replacing it.