I have a Kodak Office Hero 6.1. The printer leaves black smudges on the right hand edge of paper, from the top to the bottom. The heaviest smudges are at the top, and they get lighter as you go down the edge of the paper. I looked inside the printer and there is a lot of black ink all over the inside left hand side of the printer. I am going to take apart my printer so I can get a better look at what is going on and possibly clean out all of the errant ink inside. I think that a sponge that soaks up ink from the printer cleaning itself and the cartridges may have just filled up with ink and is no longer absorbing ink inside the printer. I will get back to you with a definite answer.