US Patent No. 10,000,057

CONTROLLING NOZZLES IN A PRINT HEAD


Patent No. 10,000,057
Issue Date June 19, 2018
Title Controlling Nozzles In A Print Head
Inventorship Marc Isal Cortes, Sant Cugat del Valles (ES)
Yair Shemesh, Holon (IL)
Oren Perets, Netanya (IL)
Assignee HP SCITEX LTD., Netanya (IL)

Claim of US Patent No. 10,000,057

1. A method of a printing system, the method comprising:starting a print operation using the printing system;
determining, during the print operation, first status information that relates to a condition of a first nozzle set of a print head, and second status information that relates to a condition of a second nozzle set of the print head;
comparing the first status information to a plurality of ranges indicative of different nozzle operation states;
in response to determining from the first status information that a number of malfunctioning nozzles in the first nozzle set does not exceed a first threshold value and determining from the second status information that a number of redundant nozzles in the second nozzle set exceeds a second threshold value, causing a second nozzle set including the redundant nozzles of the print head to be operated in place of the first nozzle set to continue the print operation; and
in response to determining from the first status information that that the number of malfunctioning nozzles in the first nozzle set exceeds the first threshold value, interrupting the print operation and instructing a maintenance operation on the print head.