Inkjet nozzle device configured for venting gas bubbles

摘要

An inkjet nozzle device configured for venting a gas bubble during droplet ejection. The inkjet nozzle device includes: a firing chamber for containing ink, the firing chamber having a floor and a roof defining a nozzle aperture having a perimeter; and a heater element bonded to the floor of the firing chamber. The device is configured to satisfy the relationships A=swept volume/area of heater element=8 to 14 microns; and B=firing chamber volume/swept volume=2 to 6. The swept volume is defined as the volume of a shape defined by a projection from the perimeter of the nozzle aperture to the floor of the firing chamber, and includes a volume contained within the nozzle aperture.

主权项

1. An inkjet nozzle device configured for venting a gas bubble during droplet ejection, the inkjet nozzle device comprising:
a firing chamber for containing ink, the firing chamber having a floor and a roof defining a nozzle aperture having a perimeter; and a heater element bonded to the floor of the firing chamber,wherein the device is configured to satisfy the relationships A and B:
A=swept volume/area of heater element=8 to 14 microns B=firing chamber volume/swept volume=2 to 6wherein the swept volume is defined as the volume of a shape defined by a projection from the perimeter of the nozzle aperture to the floor of the firing chamber, the swept volume including a volume contained within the nozzle aperture.