asked May 5, 2018 at 2:34pm
Konicaminolta Konica-Minolta Bizhub C451

Problem with major streaking in light black

I have a Konica Minolta Bizhub C451. I replaced the black imaging unit because it was end of life, and thats when my problems began. When my new imaging unit arrived, I installed it and the printer worked with no problems at all. This is a very light duty machine. After about 4 weeks of light use, I started noticing pronounced streaking in the blacks (mainly in tints of black). I convinced the store I bought the IU from that it was defective, and they shipped me a new one. I installed that unit today, and am having the exact same problem. It is obviously not the imaging unit.
Do you have any idea what could be causing this problem in only 1 color?
Thanks in advance.