I bought these cartridges and was initially also done - of course due to the price difference to the original. That has now changed, however. If I do not have printed a few days, then I have to often make a row, my prints come right out of the printer until that many nozzle cleanings. Also have since been not recognized by 6 cartridges 2. As measured by the waiting time for an expression, the increased consumption of ink and the annoyance I can not recommend this product. ______________________________________________________________________________________________________________Update - 29/04/2015 Due to my feedback, the company Logic Seek has contacted me and offered me compensation because an error in the batch was suspected. I can now confirm to the multiple test that the newly supplied cartridges are better recognized and that they no longer dry out as quickly. Even after a break of 2 weeks was the first pressure OK.