Inkjet printing apparatus, clogged nozzle recovering method and clogged nozzle recovery program

摘要

An inkjet printing apparatus, a clogged nozzle recovering method, and a clogged nozzle recovery program are provided. The inkjet printing apparatus includes a head, a tank, a first pump, a cap, a second pump and a control means. The head is provided with a nozzle face and a plurality of nozzles. The tank is connected with the head through a tube. The first pump is connected with the tank and maintains the tank at a constant negative pressure. The cap for suction covers a part of the nozzles on the nozzle face of the head. The second pump is connected with the cap for sucking an inside of the cap. The control means controls to lower the negative pressure of the tank that is maintained by the first pump when the inside of the cap is sucked by the second pump.

主权项

1. An inkjet printing apparatus comprising:
a head which is provided with a nozzle face and a plurality of nozzles, wherein the plurality of nozzles are provided on the nozzle face for discharging ink; a tank which stores ink and is connected with the head through a tube; a first pump which is connected with the tank and maintains the tank at a constant negative pressure; a cap for suction which covers a part of the plurality of nozzles on the nozzle face of the head; a second pump which is connected with the cap for sucking an inside of the cap; and a control means which controls to lower the negative pressure of the tank that is maintained by the first pump when the inside of the cap is sucked by the second pump, wherein the control means further controls suction of the first pump based on number of the plurality of nozzles without being clogged in a region where the cap is not covered.