I searched our knowledge base and found this article for black or colored streaks. If you are still having issues after trying these steps, I suggest that you call into our support department for assistance @ 1-800-835-6100
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Horizontal streaks appear every ~45mm on pages when I print in BW and in color. Streaks are only black when printing in BW and are in color when printing in color. This typically happens for the first 4-5 pages of a print job, then it is cleared. However, it starts right back up again during the next print job.
I have tried troubleshooting but can't seem to figure this out. Any help is appreciated.