| 摘要 |
<p>A method and apparatus for the accurate formation of a free-form three-dimensional article (38) comprises providing a supply of substantially uniform size droplets (36) of a desired material wherein each droplet has a positive or negative charge in an enclosed environment. The supply of droplets is focused or aligned into a narrow stream by passing the droplets through or adjacent an alignment means (30) which repels each droplet toward an axis extending through the alignment means. The droplets are deposited in a predetermined pattern at a predetermined rate onto a target to form the three-dimensional article.</p> |
