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Print system with volume substantially void of liquid

  • US 10,449,777 B2
  • Filed: 01/29/2015
  • Issued: 10/22/2019
  • Est. Priority Date: 01/29/2015
  • Status: Active Grant
First Claim
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1. A print system, comprising:

  • a volume initially substantially void of a liquid when the volume is initially mounted in the print system, the volume including a vent to vent gas out of the volume;

    a nozzle array;

    a negative pressure pump assembly to apply a negative pressure to the vent that exceeds a wetted vent bubble pressure of the vent;

    a controller; and

    a storage medium storage storing instructions executable on the controller to;

    initiate, after the volume that is initially substantially void of a liquid is mounted in the print system and responsive to connection of a print liquid supply to the volume, a startup by instructing the pump assembly to actively refresh negative pressure during a first accumulated time span to evacuate a gas out of the volume through the vent, and fill the volume with a print liquid from the print liquid supply, andafter completing the startup that has filled the volume with the print liquid, instruct the pump assembly to refresh negative pressure during a second accumulated time span that is shorter than the first accumulated time span.

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