Streaks M551

I have a customer with a M551 leaves streaks on the page.  Here's what I found:

-The streaks are black

-Streaks are very wide and dark when the printer has not been used for a few days and greatly improves with multiple page printing

-All ink cartridges have been replaced

-There are no scratches or abnormalities on the cartridges

-The streaks appear on the transfer belt, but it is just loose toner that can be wiped off with a tissue

-There is loose toner on top of the yellow cartridge - it is just below where the transfer belt revolves around its roll
-The cleaning cycle makes no difference

-All the toner cartridges are HP original, and that's all that was used

-This has happened for several months and the black cartridge has been emptied and replaced several times

There is an attached PDF file showing streaks in their light version.  I could not get a page that I could share publicly with the really bad version.

Any thoughts?

Hello TrippB,

Tags: HP Printers

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