Fluid ejection device and printhead
US10493758B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 30, 2018 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Jan 30, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Ejection device for fluid, comprising a solid body including: first semiconductor body including a chamber for containing the fluid, an ejection nozzle in fluid connection with the chamber, and an actuator operatively connected to the chamber to generate, in use, one or more pressure waves in the fluid such as to cause ejection of the fluid from the ejection nozzle; and a second semiconductor body including a channel for feeding the fluid to the chamber, coupled to the first semiconductor body, in such a way that the channel is in fluid connection with the chamber. The second semiconductor body integrates a damping cavity over which extends a damping membrane, the damping cavity and the damping membrane extending laterally to the channel for feeding the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.