Ink jet print head front face having a textured superoleophobic surface and methods for making the same
AssigneeXerox Corporation
InventorsHong Zhao, Kyoo-Chul Park, Kock-Yee Law
Life of this patent
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Abstract
An ink jet print head front face or nozzle plate having a textured superoleophobic surface that prevents undesirable drooling, wetting and/or adhesion of the ink on the print head. The textured surface includes a rim formed around the nozzle. Also described are methods for forming the textured superoleophobic ink jet print head front face or nozzle plate from silicon having the textured, oleophobic surface.
Claims20
A process for preparing an ink jet print head front face or nozzle plate having a textured superoleophobic surface comprising:
- providing a silicon substrate having a front side and a back side;
- forming an ink reservoir in the back side of the silicon substrate;
- forming a textured pattern in the front side of the silicon substrate through photolithography;
- forming one or more holes into the silicon substrate for form one or more nozzle holes for the ink jet print head front face or nozzle plate;
- forming a ring around a circumference of the one or more nozzle holes;
- and
- modifying the textured silicon surface by disposing a conformal oleophobic coating thereon, to form an ink jet print head front face or nozzle plate having one or more nozzle holes and a textured superoleophobic surface.
A process for preparing an ink jet print head front face or nozzle plate having a textured superoleophobic surface comprising:
- providing a silicon substrate having a front side and a back side;
- forming an ink reservoir in the back side of the silicon substrate;
- forming a textured pattern in the front side of the silicon substrate through photolithography, the textured pattern selected from the group consisting of grooves, an array of pillars, and mixtures thereof;
- forming one or more holes into the silicon substrate for form one or more nozzle holes for the ink jet print head front face or nozzle plate;
- forming a ring around a circumference of the one or more nozzle holes;
- and
- modifying the textured silicon surface by disposing a conformal oleophobic coating thereon, to form an ink jet print head front face or nozzle plate having on or more nozzle holes and a textured superoleophobic surface.
A process for preparing an ink jet print head front face or nozzle plate having a textured superoleophobic surface comprising:
- providing a silicon substrate having a front side and a back side;
- forming an ink reservoir in the back side of the silicon substrate;
- forming a textured pattern in the front side of the silicon substrate through photolithography, the textured pattern comprising a combination of pillars and grooves configured to direct a flow of liquid in a selected flow pattern;
- forming one or more holes into the silicon substrate for form one or more nozzle holes for the ink jet print head front face or nozzle plate;
- forming a ring around a circumference of the one or more nozzle holes;
- and
- modifying the textured silicon surface by disposing a conformal oleophobic coating thereon, to form an ink jet print head front face or nozzle plate having one or more nozzle holes and a textured superoleophobic surface.
Dependencies are inferred from the claim text.