Liquid ejection head and recording apparatus
US8955931B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2013 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Apr 22, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14411
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid ejection head includes a substrate that carries thereon a plurality of ejection energy generating elements arranged in rows to generate energy necessary for ejecting liquid and an ejection port plate that is laid on the substrate and has a plurality of ejection ports formed therein and arranged vis-a-vis the respective ejection energy generating elements. The ejection port plate has a groove, or an oblong recess, formed on the surface thereof where the plurality of ejection ports are formed such that the groove surrounds the region where the ejection ports are formed and has a corrugated inner lateral surface and a flat outer lateral surface arranged oppositely relative to the inner lateral surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.