Print has black bands across the printed page

[kwanloo]

I have a HP LASERJET MFP M28-M31 printer link to a Dell Inspiron 3470 pc tower.

When I print now, i get 4 black horizontal (verticallyt equispaced) bands (approx 20 mm deep by 100 mm long) from right hand edge of the paper.  Before I have a paper jam, it was printing ok.

Please help.  Thanks.

[TEJ1602]

@kwanloo, Welcome to HP Support Community!

Cleaning the printing mechanism and printing path inside the printer might resolve issues like repeating dots, fuzzy print, or smeared toner. If you have a Mac, skip to the next step.

1. Search Windows for HP, and then click your printer name from the list of results.

   HP Printer Assistant opens.

2. Click Print, and then click HP Device Toolbox.

3. Click the System tab, and then click Service.

4. In the Cleaning Mode section, click Start.

   The cleaning process starts.

Print another page.

If the issue persists, follow the steps from the document Fixing Poor Print Quality.

Hope this helps! Keep me posted. 

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