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US 2021/0229358 A1Published application
Three-dimensional (3d) printing
AssigneeHewlett-Packard Development Company, L.P.
InventorsSterling Chaffins, Kevin P. DeKam
Life of this patent
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Abstract
In a three-dimensional printing method example, a pre-treatment coating is formed on a part precursor by applying and drying, alternatingly: a polycation solution including a chloride ion and a polyanion solution including a sodium ion to form at least two layers. An ink is selectively deposited on the pre-treatment coating.
Claims9
A three-dimensional (3D) printing method, comprising:
- forming a pre-treatment coating on a build material by applying and drying, alternatingly:
- i) a polycation solution including a chloride ion and ii) a polyanion solution including a sodium ion to form at least two layers;
- selectively depositing an ink on the pre-treatment coating;
- and
- exposing at least a portion of the build material having the pre-treatment coating and ink thereon to electromagnetic radiation to form a pre-treated part.
2 more elements
A three-dimensional part, comprising:
- a sintered or fused substrate;
- a multi-layer pre-treatment coating on the sintered or fused substrate, the multi-layer pre-treatment coating including:
- a polycation layer;
- and
- a polyanion layer;
- and
- an ink applied to at least a portion of the multi-layer pre-treatment coating.
4 more elements
Dependencies are inferred from the claim text.