We describe a portable paperless electronic printer for displaying a printed document on an electronic paper display. The paperless electronic printer includes an input to receive print data from an output of a printer driver of a computerised electronic device, a non-volatile electrophoretic display to provide an electronic paper display of stored said print data for a said document page to mimic said document page when printed on paper; and a processor coupled to said input, to non-volatile memory, and to said non-volatile electrophoretic display and configured to input said print data, to store said data derived from said print data in said non-volatile memory, and to provide to said non-volatile electrophoretic display data for displaying a said document page derived from said stored data.