Ultrafine fluid jet apparatus
US7434912B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2003 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Aug 28, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14395
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ultrafine fluid jet apparatus including a substrate arranged near a distal end of an ultrafine-diameter nozzle to which a solution is supplied, and an optional-waveform voltage is applied to the solution in the nozzle to eject an ultrafine-diameter fluid droplet onto a surface of the substrate; wherein an electric field intensity near the distal end of the nozzle according to a diameter reduction of the nozzle is sufficiently larger than an electric field acting between the nozzle and the substrate; and wherein Maxwell stress and an electro-wetting effect being utilized, a conductance is decreased by a reduction in the nozzle diameter or the like, and controllability of an ejection rate by a voltage is improved; and wherein landing accuracy is exponentially improved by moderation of evaporation by a charged droplet and acceleration of the droplet by an electric field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.