Liquid ejection head and liquid ejection apparatus
US9308722B2 · kind B2 · utility
4Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2014 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Oct 10, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14145
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a liquid ejection head for ejecting liquid by using thermal energy, reduction of film thickness caused by elution of a protective layer when kogation on the protective layer is removed is made uniform and decrease in liquid ejection performance is suppressed. More specifically, a counter electrode is provided around a portion on which an ejection port of a flow path forming member is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.