Detection of printhead conditions based on isolation scoring

A non-transitory computer readable medium embodying programmed instructions which, when executed by a processor, are operable for performing a method of identifying print quality at a printer, the method comprising:

• storing reference data for a plurality of nozzles of a printer;
• acquiring measurement data for each nozzle of the plurality of nozzles after operation of the plurality of nozzles;
• calculating differences for each nozzle between the reference data and the measurement data;
• applying the differences as an input to an isolation forest;
• operating the isolation forest to determine isolation values for each nozzle;
• identifying one or more individual nozzles of the plurality of nozzles having more than a threshold amount of deviation from the reference data based on the isolation values;
• and
• generating a report flagging the identified one or more individual nozzles for maintenance.

A method for identifying print quality at a printer, the method comprising:

• storing reference data for a plurality of nozzles of a printer;
• acquiring measurement data for each nozzle of the plurality of nozzles after operation of the plurality of nozzles;
• calculating differences for each nozzle between the reference data and the measurement data;
• applying the differences as an input to an isolation forest;
• operating the isolation forest to determine isolation values for each nozzle;
• identifying one or more individual nozzles of the plurality of nozzles having more than a threshold amount of deviation from the reference data based on the isolation values;
• and
• generating a report flagging the identified one or more individual nozzles for maintenance.