Liquid ejection head
US9878534B2 · kind B2 · utility
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Key dates
| Filing date | Mar 20, 2017 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Mar 20, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid ejection head includes: a piezoelectric actuator configured to be deformed depending on a driving pulse applied thereto so as to eject liquid filled in a pressure chamber from a nozzle, a ratio of a first local maximum value which is a largest value among a plurality of local maximum values of an ejection speed of the liquid depending on a pulse width and a second local maximum value which is a second largest value thereamong satisfying a predetermined condition; and a control unit configured to successively apply a first driving pulse and a second driving pulse to the piezoelectric actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.