Liquid ejection head and process for producing the same
US9895887B2 · kind B2 · utility
0Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2014 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Jun 23, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided is a liquid ejection head capable of stably ejecting a liquid at a practical liquid droplet velocity without separating minute liquid droplets before ejection of main liquid droplets in the case of reducing the amount of liquid droplets by reducing a nozzle diameter of the liquid ejection head. In a liquid ejection head including a nozzle for ejecting a liquid, a recess portion recessed relative to a nozzle inner wall surface is formed on a nozzle inner wall in a region having a nozzle inner diameter of 15 μm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.