Patent ID: 6193354
Filing Date: 2001-02-27
Classification: B41J

Abstract:
An ink jet recorder comprising:an ink jet head having a nozzle for ejecting ink and ink passages formed in the head, the passages communicating with the nozzle;a suction cap relatively movable between a first position in airtight contact with the nozzle and a second position separated from the nozzle;a suction pump that sucks ink from the nozzle through the suction cap to purge the nozzle;an ink supply for supplying the head with ink; anda pressure control unit provided between the ink supply and the ink jet head for controlling the pressure applied to the ink in the nozzle, wherein the nozzle is purged by the suction pump when the suction cap is in the first position and the pressure control unit applies positive pressure to the ink in the nozzle before the suction cap is moved to the second position separated from the ink jet head.