7830i poor quality when copying

Hello,

We have 2 new devices of type 7830i.
The problem is the poor quality when copying. Are there any options for setting? Reduce compression, increase resolution?

Firmware: 073.010.136.34300. Installed: 2017 Februar 16 — 10:41:57

Our old WC7232 has a better quality when copying.

Here are my two examples

Above the printout with PC
Down the copy of the print

Regards