7310 All-in-One

Greetings,

I am donating my old 7310 to a charity organizaton. I don't know enough about the printer to know if, when documents are scanned, or faxed, if copies somehow are retained in whatever "internal memory" there may be- ie- is there a "security" issue? and if so, is there a procedure to "delete" or erase the document copies if they exist in the printer. Thanks very much for your help!!