I have a greasemonkey script which solves my problem. Of course would these need to be adjusted and perhaps handcrafted better for support for all websites.
// ==UserScript==
// @name MakePrinterFriendly
// @namespace http://www.example.com/
// @description Unsets the face attribute of courier font
// @include https://insupg.bankgirot.se/*
// ==/UserScript==

fonts = document.getElementsByTagName(’font’);
Array.forEach(fonts, function(ele) {
if (ele.face == ‘Courier’) {
ele.face = “Courier new”;
}
});