Font and size of printouts in iPad

Having iOS 9.3.1 I'm trying to figure ot a way how to change font sizes and fonts for printouts.

Yes, I know that there's a slidebar in setting that affects font sizes in programs that support the Dynamic fontsize feature.

But that is not my true need.

I like to have larger fonts on the screen but they are a total vaste on printouts.

I would also like to choose which fonts to use in Mail and Notes but that is not possible - or is it?

Any hints on this one?