Unfortunately this does not resolve the issue of trying to use an alternative pdf conversion printer ( other than the one built into ArcMap) . If you print, print to pdf and select data driven you can select an alternate conversion printer like pdf24, bullzip, or freepdf. It seems Jürgen would like to use one of these due to file size. Sometimes I need to use an alternative pdf conversion printer because the font I am using does not appear correctly when using the Arcmap export tool (even when I select embed font). I too would prefer the option to print to multiple files ( like the export tool allows) from the print option or be able to change the alternative pdf conversion printer within the export tool. Please let me know if you are aware of any options. For an example of the difference in converting pdfs try using the Khmer font. You will see the pdf24 print looks fine, where the export does not (even when you select embed fonts).