Patent ID: 9573381
Date: 2017-02-21
CPC Classifications: B41J

Claim:
1. A printing apparatus comprising: a printhead in which a plurality of nozzles are provided for discharging ink; an ink tank for storing ink to be supplied to the printhead; an ink channel for supplying ink from the ink tank to the printhead; a bubble injection unit configured to perform a bubble injection operation to inject a bubble to the ink channel; a cap capable of covering the nozzles; a first pump configured to perform a first suction operation and a second suction operation that is stronger than the first suction operation, so as to suck ink from the nozzles through the cap; and a control unit configured to control the bubble injection unit and the first pump, wherein the control unit causes the bubble injection unit to perform the bubble injection operation, and then causes the first pump to perform the first suction operation and the second suction operation following the first suction operation while maintaining a capping state where the nozzles are covered by the cap.