No.[br]
Usually you can’t fix the problem once the lines remain over more than 1-2 prints.[br]
Problem is the print head of course.[br]
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The real question is WHEN does it happen and WHY.[br]
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In my case (Officejet Pro 8620) the lines started appearing immediately (!) after placing non-HP catridges to the printer when out of warranty. This is actually very unlogic from a technical point of view, as there still is original ink in the print head.[br]
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That’s why MANY SAY and so I do believe that the problem is “caused” programmatically.[br]
So you would need to buy a new printer or at least print head.[br]
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PROBLEM. There is no real proof for what I claim or believe. Why?[br]
HP can argue differently and we can’t look into the internal communication of the print head, main board, etc.[br]
but I’m actually thinking of doing that, because it is possible with the right knowledge and someone should check against fraud.