After upgrade to 14.1 I had some issues with printing PDF's from Okular. The images won't print. Found this sollution:

"All important upstream desktop application projects (GTK/GNOME, Qt/KDE, Firefox/Thunderbird, LibreOffice/OpenOffice.org) have switched to emit print jobs in PDF format. The few applications still sending PostScript are less important programs which do not use standard libraries for print job generation. A PDF-enabled CUPS setup turns incoming PostScript to PDF as first step in such a case.

The filter set to switch CUPS 1.5.x or earlier from the original PostScript-based workflow to the PDF-based workflow or to be able to print with filters and drivers at all from CUPS 1.6.x on (here there will be no PostScript-centric workflow any more) is the OpenPrinting CUPS Filters package. It needs to get installed after installing CUPS (on CUPS 1.5.x and earlier some of CUPS' original filters get replaced) and then the PDF-based workflow is up and running."

from www.openprinting.org

I think it is reasonable to have CUPS-filters package if its planed to stick with CUPS 1.5.x to have default PDF print job format enabled. As KDE and Qt uses it.

I know this is no help but, Okular prints just fine for me, images and all. I've a stock 14.1 installation (except for everything needed to build VLC) using KDE.

I know that it works well, but there aresome situations with maybe some printers and pdf documents. for me it works good with samsung printer, but fails often with canon.

cups-filters package is mainly required for cups-1.6 and onwards. For 1.5, there's no need to use that package as most of the contents of cups-filters are still in the 1.5 source

thereė are filters in cups 1.5.x source, but they use postscript as default printing job format, when you install cups-filters with cups 1.5.x you get pdf ash default printing format. programs that use Qt 4.x use pdf as default printing format. so if you print from them you have conversion in cups from pdf to postscript and then if your printer has its own format from postscript to printer format (for canon its urf2). Sometimes it has influence on printing speed and can produce some unacceptable results. An if you use cups-filters you have one no conversion from pdf to ps.

Also cups uses poppler for all work with pdf. Maybe there are some problems with cups 1.5.x filter and the new poppler version that shipped with 14.1.

I think they use in Debian cups-1.5.x and cups-filters.