As of Release 3.0E the cover pages for print requests can be translated.
New TP_ variables have been added to the existing variables for spool, profile and user address values. You can use these variables to define and output headings, field names and other static texts on cover pages in different languages.
For more information please refer to the SAP WinHelp documentation "Printer manual", section "Define title page" (Help -> R/3 Library -> Basis System -> Printer Manual).