No penalty of substitute product

Addendum:
Hmm ... after 7000 makes the printer print any yellow stripe in the border area where not usually printed - I do not rule out that this is due to the cartridges. Perhaps this can express even a specialist?

The old hat. The manufacturer threatens with loss of guarantee and what I know, if you dare not to use the expensive OEM cartridges. Have already the second charge of these cartridges and I must say, keep my feeling that are not only longer but at least as good. I can not detect any extent Distinguish.