An ink jet recorder is provided with a recovery device for preventing unsatisfactory ink discharge of a recording head, the recovery device being provided with ink suction means having a cap covering an ink discharge port, a vent valve for opening and closing the interior of the cap with respect to the...http://www.google.de/patents/US4745414?utm_source=gb-gplus-sharePatent US4745414 - Recovery device for an ink jet recorder and a recovery method thereof
