Patent ID: 11919296
Assignee: SEIKO EPSON CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 5:
6. A printing method of a printing apparatus, the printing apparatus including:
a head including a plurality of nozzles configured to discharge liquid to a medium;
an abnormal nozzle detection unit configured to detect an abnormal nozzle having a discharging defect among the plurality of nozzles;
a contact detection unit configured to detect contact between the head and the medium, wherein the contact detection unit is provided upstream or downstream of the head along a conveyance direction in which the medium is conveyed; and
an ejection unit configured to perform an ejection operation of ejecting the liquid from the plurality of nozzles, the method comprising:
detecting the abnormal nozzle;
detecting the contact between the head and the medium;
executing the ejection operation when the abnormal nozzle is detected and the contact between the head and the medium is detected; and
executing complementary printing of complementing the abnormal nozzle when the abnormal nozzle is detected and the contact between the head and the medium is not detected.