Liquid discharge head and printer
US11135844B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2020 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Apr 17, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/03
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided is a liquid discharge head that includes a nozzle plate provided with a nozzle hole that discharges a liquid, a silicon substrate provided with a pressure generating chamber that communicates with the nozzle hole, a vibration plate provided on the silicon substrate, and a piezoelectric element that is provided on the vibration plate and changes a volume of the pressure generating chamber. The piezoelectric element includes a piezoelectric layer including a composite oxide of a perovskite structure containing lead, zirconium, and titanium. A difference between a peak position derived from a (100) surface of the piezoelectric layer and a peak position derived from a (220) surface of the silicon substrate in an X-ray diffraction of the piezoelectric layer is less than 25.00°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.