The thermal print head is the key component in my experiment so only a thermal fax will work, and these use rolls of specially treated paper to print to (like many receipt printers) that change to black when heated or use a roll of thermally transferred ink to print on plain paper. If you run your fingernail quickly over the paper it will leave a black line. Newer faxes use inkjet or laser toner type technologies and would not work for me.
I do not have an office machine orchestra in mind, although that is an interesting link. Maybe a Imagewriter II quartet. Thanks!