I have just had a small bit of text printed in Proxima Nova (light), and I have noticed that the weight of some letters look bolder than others (noticeably the numbers, capital letters and v, w and y).
I cant figure out if this is a font problem or a printing problem.
It seems strange to be a printing problem, as it is consistently the capitals that look off
But also strange that the font always looks fine on screen.
I do understand that its meant to be a web font but I still wouldn't expect these results when printing.
Should I just not be using this font for print?
Thanks for any help in advance, I'm very new to this kind of thing.

"Should I just not be using this font for print? "
That is correct. You need to use the desktop font for print.