Method and apparatus for promoting the complete transfer of liquid drops from a nozzle
US7458661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2006 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Dec 8, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14475
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printhead device for transferring liquid droplets from a nozzle includes a liquid source coupled to a nozzle via a microchannel. The nozzle is formed from an orifice having an inner circumferential surface, wherein at least a portion of the inner circumferential surface is serrated. Liquid droplets are transported from the source to the nozzle using a liquid droplet driver (e.g., employing a plurality of driving electrodes). Transfer of droplets to another surface can be accomplished by contacting a bulging droplet in the nozzle with a printing surface. The surface and/or nozzle are then moved relative to one another to effectuate complete transfer of the liquid drop from the nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.