Soluble support material for electrophotography-based additive manufacturing
US10018937B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2017 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Jan 4, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1695
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A support material for printing a support structure with an electrophotography-based additive manufacturing system, the support material including a composition having a charge control agent and a thermoplastic copolymer having aromatic groups, (meth)acrylate-based ester groups, carboxylic acid groups, and anhydride groups, with a high anhydride conversion. The composition is provided in a powder form having a controlled particle size, and the support material is configured for use in the electrophotography-based additive manufacturing system having a layer transfusion assembly for printing the support structure in a layer-by-layer manner, and is at least partially soluble in an aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.