Methods and systems for stereolithography three-dimensional printing
US11400650B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Apr 7, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y70/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present disclosure provides method and systems for printing a three-dimensional (3D) object. A method for 3D printing may comprise providing a mixture comprising (i) a polymeric precursor, (ii) a photoinitiator configured to initiate formation of a polymeric material from the polymeric precursor, and (iii) a photoinhibitor configured to inhibit the formation of the polymeric precursor. The method may comprise exposing the mixture to (i) a first light to cause the photoinitiator to initiate formation of the polymeric material, thereby to print the 3D object, and (ii) a second light to cause the photoinhibitor to inhibit the formation of the polymeric material. During printing of the 3D object, a ratio of (i) an energy of the second light sufficient to initiate formation of the polymeric material relative to (ii) an energy of the first light sufficient to initiate formation of the polymeric material may be greater than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.