| 摘要 |
An improved ink jetting nozzle maintenance apparatus not only for preventing a blockage in a nozzle with a minimum number of parts for a service station device for service function for reducing ink vaporization at the nozzle during a standby mode, but also for performing an ink suctioning without causing a delay in the printing operation. In the ink jetting nozzle maintenance apparatus including a cap for preventing any blockage in an ink nozzle during the standby mode, a wiper for wiping an ink nozzle surface, a capping device and a wiping device for raising and lowering the capping cap and the wiper, and a service station device having a carriage which carries an ink cartridge for a printing operation, for driving the capping and wiping devices by the reciprocal movement of the carriage, the cap including a suction diaphragm for expanding the volume of a cap space formed during the sealing of the nozzle, the suction diaphragm is extended by the suction diaphragm lowering unit which lowers the suction diaphragm in the opposite direction from the nozzle for expanding the volume of the cap space when the capping cap seals the nozzle and additionally moves a certain distance, the cap space being subjected to a negative pressure by the extending of the suction diaphragm to permit a certain amount of ink to be sucked out of the nozzle for preventing the drying of an inlet of the nozzle, and the ink sucked out by the negative pressure into droplets to prevent the nozzle drying is wiped out by the wiper during the wiping operation for the printing operation.
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