Fusing three-dimensional (3D) object layers
US11383434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2018 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Jul 31, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y30/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In an example, a method of fusing a 3D object layer with a stationary energy system positioned and a carriage that casts a shadow onto the work area includes, with one pass of the carriage moving over the work area at a constant speed, dispensing a liquid fusing agent onto a first layer of build material in a pattern corresponding to an object slice such that the exposure time of the patterned build material is unequal across the first layer and, with another pass of the carriage moving over the work area in the same direction and at the same constant speed as the first pass, spreading the next layer of build material over the first layer such that the exposure time of the patterned build material in the first layer is made equal across the first layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.