Inkjet printing apparatuses, inkjet nozzles, and methods of forming inkjet nozzles
AssigneeSamsung Electronics Co., Ltd.
InventorsSung-gyu Kang, Young-ki Hong
Life of this patent
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Abstract
Provided is an inkjet printing apparatus. The inkjet printing apparatus includes a nozzle. The nozzle includes at least two nozzle parts. A first of the at least two nozzle parts has a first tapered shape, and a second of the at least two nozzle parts has a second tapered shape and extends from the first nozzle part. The first and second tapered shapes have a same taper direction.
Claims19
An inkjet printing apparatus comprising:
- a nozzle;
- wherein the nozzle includes at least two nozzle parts,
- a first of the at least two nozzle parts having a first tapered shape, and
- a second of the at least two nozzle parts having a second tapered shape and extending from the first nozzle part,
- wherein the first and second tapered shapes have a same taper direction,
- wherein the at least two nozzle parts includes a third nozzle part having a third tapered shape and extending from the second nozzle part, and
- wherein a taper angle of the second nozzle part is less than taper angles of the first nozzle part and the third nozzle part.
A method of forming a nozzle of an inkjet printing apparatus, the method comprising:
- forming a first depression from a first surface of a substrate, the first depression being tapered;
- forming an outlet from a second surface of the substrate on an opposite side of the substrate than the first surface such that the outlet penetrates an apex of the first depression;
- and
- forming a second depression in the outlet by etching the outlet, the second depression having a taper angle different from a taper angle of the first depression.
A method of forming a nozzle of an inkjet printing apparatus, the method comprising:
- forming a first depression from a first surface of a substrate, the first depression being tapered;
- forming an outlet from a second surface of the substrate opposite to the first surface, the outlet being connected to an apex of the first depression;
- and
- forming a second depression, the second depression being formed in the outlet and having a taper angle different from a taper angle of the first depression, wherein the forming a first depression and the forming a second depression include a wet etching process.
A method of forming a nozzle of an inkjet printing apparatus, the method comprising:
- forming a first depression from a first surface of a substrate, the first depression being tapered;
- forming an outlet from a second surface of the substrate opposite to the first surface, the outlet being connected to an apex of the first depression;
- forming a second depression, the second depression being formed in the outlet and having a taper angle different from a taper angle of the first depression;
- and
- forming a third depression, the third depression being formed in the second depression and having a taper angle different from the taper angle of the second depression,
- wherein taper angles of the first depression and the third depression are substantially the same.
A method of forming a nozzle of an inkjet printing apparatus, the method comprising:
- forming a first depression from a first surface of a substrate, the first depression being tapered;
- forming an outlet from a second surface of the substrate opposite to the first surface, the outlet being connected to an apex of the first depression;
- forming a second depression, the second depression being formed in the outlet and having a taper angle different from a taper angle of the first depression;
- and
- forming a trench around the third depression, the trench being formed in the second surface of the substrate such that the second surface is depressed toward the first surface.
Dependencies are inferred from the claim text.