Patent ID: 8931431
Filing Date: 2015-01-13
Classification: B41J,C23C

Abstract:
1. A first device, comprising: a print head comprising a planar nozzle array, a height sensor, and a z actuator; the planar nozzle array comprising a first nozzle hermetically sealed to a first source of gas; wherein the first nozzle has an aperture having a smallest dimension of 0.5 to 500 microns in a direction perpendicular to a flow direction of the first nozzle; wherein, at a distance from the aperture into the first nozzle that is 5 times the smallest dimension of the aperture of the first nozzle, the smallest dimension perpendicular to the flow direction is at least twice the smallest dimension of the aperture of the first nozzle; and wherein the z actuator is capable of maintaining the planar nozzle array at 3 μm to 10 μm above a substrate surface in response to measurements by the height sensor.