Hi Martim,
as far as i know there is no such posibillity in standard ChaRM. All necessary documentation is within the ChaRM tickets, so i guess so there is no need for a print out from the SAP point of view.
There is a print option for ChaRM tickets, but currently it does not work.
But it is possible to create a smartfrom and use it for PDF creation / print of a ChaRM ticket with custom development.
Hope this helps,
Christoph