Lines printing on a HP sprocket printer

[Jessfro]

I have a go sprocket printer that has been working fine but now it’s printing each image with vertical black lines (4 black lines). I’ve tried changing the paper (it’s official HP paper) and it’s firmware is up to date. Any suggestions? 

[TEJ1602]

@Jessfro, Welcome to HP Support Community!

If you have already performed the steps from the document Improving Print Quality and the issue persists, it could be a hardware failure.

Please reach out to the HP Support in your region regarding the service options for your printer.

Hope this helps!

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