Fluid ejection device with two-layer tophat
US9156262B2 · kind B2 · utility
11Cited by
0References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2012 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Apr 27, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an embodiment, a fluid ejection device includes a substrate with a fluid slot, and a chamber layer over the substrate that defines a firing chamber and a fluidic channel extending through the firing chamber and in fluid communication with the slot at first and second ends. The device includes a tophat layer formed as a two-layer stack over the chamber layer, and a nozzle bore over the firing chamber that comprises a greater cavity formed in a first layer of the stack and a lesser cavity formed in a second layer of the stack, the greater cavity encompasses a larger volume than the lesser cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.