Fond gris a l'impression avec laser Brother et Mac

Hi @João Manuel Joaquim 

For printing issues please check if it is happening with some other application too, like trying to open the PDF in some browser like Chrome o Firefox etc. If it is working fine on that then follow the help article for troubleshooting printer issues in the Reader DC application.

https://helpx.adobe.com/acrobat/kb/troubleshoot-pdf-printing-acrobat-reader.html

Let us know if that helps.

Thanks,

Harsh