Method of printing parts with a high-performance consumable materials with electrophotography based additive manufacturing system
US11150570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2017 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Oct 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1695
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for printing a three-dimensional part with an electrophotography-based additive manufacturing system having an electrophotography engine, a transfer medium, and a layer transfusion assembly includes providing a part material to the electrophotography-based additive manufacturing system, the part material compositionally comprising a charge control agent, and a thermoplastic material having a heat deflection temperature greater than about 150° C., and has a powder form. The method includes triboelectrically charging the part material to a Q/M ratio having a negative charge or a positive charge, and a magnitude ranging from about 5 micro-Coulombs/gram to about 50 micro-Coulombs/gram and developing layers of the three-dimensional part from the charged part material with the electrophotography engine. The method includes electrostatically attracting the developed layers from the electrophotography engine to the transfer medium and moving the attracted layers to the layer transfusion assembly with the transfer medium, wherein the layer transfusion assembly comprises a nip roller. The method includes transfusing the moved layers to previously-printed layers of the three-dimensio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.