I don't know from the Epson R300 per se, but some printers will have a configuration panel which can be programmed by the user. If for example the default configuration was to stop printing when an error is encountered there may be an option to allow it to 'print through' error messages. The usage counter thing you mentioned sounds like the sort of thing that indicates that rollers and pads should be replaced (ie. routine or preventative maintenance); something which could cause an alert to show up but which should be possible to print through if properly configured.
Edited by pchartwell, 29 June 2005 - 01:03 PM.