manufacturers can match the printer to a person or company.
they can if the product was registered, not resold, etc.

and matching the prnter to a ocmpnay is far from an exact match. we have clients with offices across the state (and on the mainland) and they print to remote printers all the time (instead of faxing since hey us "paperless" offices) these companys have HUNDREDS of employees with access to the printers. so its a step closer, but far from proof beyond a reasonable doubt.