This is nothing to do with gnome-print. If I ask mozilla to print that image to a file, I get a ps file which mishandles the semitransparent png used in the web page.
This has been reported upstream; I'm attaching the upstream bug to this report. We're unlikely to do anything about this specifically for Ubuntu; it looks like heavyweight changes. If there are problems with other programs when printing this file separate reports should be filed. ** Bug watch added: Mozilla Bugzilla #235097 https://bugzilla.mozilla.org/show_bug.cgi?id=235097 ** Also affects: firefox (upstream) via https://bugzilla.mozilla.org/show_bug.cgi?id=235097 Importance: Unknown Status: Unknown ** Changed in: gnome-print (Ubuntu) Sourcepackagename: gnome-print => firefox Status: Needs Info => Rejected -- Transparent files are printed with black background https://launchpad.net/bugs/28514 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs