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The IQ test consists of a solid block (100%) ink coverage of each color 5x8 inch, so it needs much more ink flow than any other print job.

I have a very strange problem with my Designjet 9000, as soon as I start printing all printheads start to drop nozzles and soon it starts to print blank as if there is ink starvation, I cancel printing and run IQ test (without cleaning) and it comes out perfect, I repeat the IQ test for 5 or 6...

Dear All, I finally found out the cause of the problem, it's a tiny crack on the cyan ink tube. (check attached picture) http://www.imagebam.com/image/81c3ca135792368

Hi Tin, I have received this comment which I think logical although quite expensive. "Hello Ahmed, every printhead has a "non-wet-coating" to keep the ink aerosol away from the nozzle outlets of the head. If this coating is destructed, during printing the ink is building up at the nozzle surface...

Many thanks Tin, what is confusing is that the problem occurred while using the same cartridge, even though, does a defective cartridge can cause extreme pressure that makes the ink leak?

Suddenly the Cyan printhead in my Design jet 9000 had large gaps of white area in the test print, I run 3 strong cleaning cycles, it started printing properly then it started to drop ink on the media. Same ink, same media settings, wipers and capping station are both clean and working properly...

What's the type of cartridge you want to recycle?

What's the model of your HP? I have solutions for some.

Dear all, I'm thinking of changing my Z6100 from pigment to dye ink. Any thoughts ??