Black vertical streaks when copying in black

When copying in W & B, get a heavy vertical black streak on the left side of the page, a lighter in the Center and a very light one on the right side. Colour printing is perfect...  New black cartridge without help.

What kind of printer you have? I included a troubleshooting document that could help maybe this isn't your exact printer, but the steps are generally the same.

Click here for the document

Tags: HP Printers

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