A method for restoring ink conductivity of ink in an ink reservoir comprises detecting an ink conductivity of an ink volume in an ink reservoir, and comparing the detected ink conductivity to a predetermined ink conductivity operational range. A flush routine is performed in response to the measured...http://www.google.com.au/patents/US8042895?utm_source=gb-gplus-sharePatent US8042895 - Ink conductivity recovery method for an imaging device
