Droplet ejection using focused acoustic radiation having a plurality of frequency ranges
US10112212B1 · kind B1 · utility
6Cited by
7References
81Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2004 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Apr 8, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0439
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Devices and methods are provided for ejecting a droplet from a reservoir using focused acoustic radiation having a plurality of nonsimultaneous and discrete frequency ranges. Such frequency ranges may be used to control droplet volume and/or velocity. Optionally, satellite fluid ejection from the reservoir is suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.