Focus-activated acoustic ejection
US8544976B2 · kind B2 · utility
3Cited by
12References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2011 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Jan 14, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04596
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
To ejecting a droplet from a reservoir, the reservoir holding a fluid is moved with respect to an acoustic ejector. As the reservoir and ejector move closer together, the acoustic ejector sends one or more interrogation pulses towards the reservoir. Based on the interrogation pulses, the system determines when the movement of the reservoir has placed a free surface of the fluid in a position where a droplet can be ejected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.