Patent ID: 11878527
Assignee: SEIKO EPSON CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. A liquid discharging apparatus comprising:
a liquid discharging head discharging liquid from a plurality of nozzles;
a sealing portion configured to seal the plurality of nozzles; and
a control portion controlling an operation of the liquid discharging head, wherein
the liquid discharging head has
a plurality of individual flow paths each having a pressure chamber that communicates with at least one of the plurality of nozzles,
a common supply flow path that communicates in common with the plurality of individual flow paths and supplies the liquid to the plurality of individual flow paths, and
the control portion controls
(i) a discharging operation of discharging the liquid from the plurality of nozzles by driving an energy generation element that causes a pressure of the liquid inside the pressure chamber to fluctuate, and
(ii) a pressurization operation of pressurizing the liquid from the individual flow path side in a state in which the plurality of nozzles are sealed by the sealing portion, wherein
the liquid discharging head further includes a common exhaust flow path that communicates in common with the plurality of individual flow paths and exhausts the liquid flowing in from the plurality of individual flow paths,
the pressurization operation includes pressurizing the liquid from the common exhaust flow path side in the state in which the plurality of nozzles are sealed, and
the control portion controls to perform depressurizing the liquid from the common supply flow path side while pressurizing the liquid from the common exhaust flow path side in the state in which the plurality of nozzles are sealed in the pressurization operation.