Hello and thanks for your answer!
I already found this but it seemed to me that this isn't the solution I'm looking for. Don't know why exactly anymore. But i guess it was because when I choose a scaling in the print dialog, the content is scaled but the report's size is still the original or so.
Don't know exactly how to tell this but if for example I change scaling to 200%, the content is scaled but the page is still A4, so the content isn't printed on 4 pages but what exceeds the page size is lost (I never printed it but used the preview and page count in the print dialog).