I know this. It depends on the printer and the printer driver used. There is an OSS note on this but it does not necessarily cover all printer models and connection settings (via SAPGUI/Windows or via Server).
Sorry I can't find the note right now, it wasn't too helpful anyway.
Try another printer, (newest factory-supplied) printer driver, or printer connection - check with your basis people.
We had this trouble with a combined copier/printer unit 3M type as far as I remember.
Just found it:
Note 683605 - Graphics printed upside down on HP deskjet
But obviously this is not the only printer with this behaviour,.
Message was edited by: Clemens Li