If you have a Office and you have to archive Documents and Prints over Years you should have heard that there is a special PDF Type called PDF/A which is set as default Archiving PDF File Type for decades.
To use it you can use the Linux Print Server called CUPS to translate all digital Prints to PDF/A. This free Software Printer is known on all Linux Releases, and he can listen on USB and Network Interfaces on Documents. Also you can use Network Printers/Scanners like the Brother MFC-Series to Scan Documents and later to print them virtual as PDF/A (PDP Archive File)
The way the file is going on a Office:
Office PC -> Openoffice Writer-> Print to Cups->Linux OS -> Network -> Linux Office Server -> Linux OS -> CUPS -> CUPS Converter to PDF/A (Postscript Driver)-> Output Directory (perhaps Windows, FTP, Cloud Share)