Ink jet nozzle health and printing reliability

An inkjet printer comprising:

• a scan head including a header tank and a print head operatively connected to the header tank, wherein the print head includes a nozzle plate, and wherein the nozzle plate includes a row of nozzles, the row of nozzles containing a plurality of nozzles;
• a maintenance station including a purge cap;
• and
• a processor configured to:
• cause the scan head to move to the maintenance station;
• cause at least a partial seal to be created between the purge cap and at least one of:
• a particular nozzle of the plurality of nozzles, the row of nozzles, the nozzle plate, or the print head;
• and
• cause a reverse purge of at least one of:
• the particular nozzle of the plurality of nozzles, the row of nozzles, the nozzle plate, or the print head, wherein the reverse purge includes applying a positive pressure using a vacuum pump operatively connected with the purge cap.

A non-transitory machine-readable medium with instructions stored thereon which, when performed by a processor of a computing device, cause the computing device to:

• cause a scan head of an inkjet printer to move to a maintenance station, wherein the maintenance station includes a purge cap, wherein the scan head includes a header tank and a print head operatively connected to the header tank, wherein the print head includes a nozzle plate, and wherein the nozzle plate includes a row of nozzles, the row of nozzles containing a plurality of nozzles;
• cause at least a partial seal to be created between the purge cap and at least one of:
• a particular nozzle of the plurality of nozzles, the row of nozzles, the nozzle plate, or the print head;
• and
• cause a reverse purge of at least one of:
• the particular nozzle of the plurality of nozzles, the row of nozzles, the nozzle plate, or the print head, wherein the reverse purge includes applying a positive pressure using a vacuum pump operatively connected with the purge cap.