Always clogged despite Original Ink

I have the Officejet 6100 ePrinter for a year in extremely sporadic use.
Every time I had again to print something, a cleaning of the nozzles was due, always the full three stages until the result was only passable.
In Order To

- I'll never faster than 10 minutes to the first printed page
- I have for 322 printed pages according to usage report (many of diagnostic pages) is now the third set of the original cartridges consume
- The jet can now no longer be cleaned.

Result: 200 euros for printer cartridges and issued no warranty, printer gone.

That's it, HP. Never again.