Liquid discharge head and liquid discharge device
US12280595B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2022 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Jun 16, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid discharge head includes an individual electrode, a common electrode, a piezoelectric body that is provided between the individual electrode and the common electrode for applying pressure to liquid in the pressure chambers, a drive wiring that applies a voltage so as to drive the piezoelectric body, a detection resistor that is formed of the same material as any of the individual electrode, the common electrode, and the drive wiring for detecting temperature of the liquid in the pressure chambers, and a sealing substrate that has a wall portion and a ceiling portion, and protects the piezoelectric body by the wall portion and the ceiling portion. The detection resistor is provided to have a part overlapping the wall portion which is shorter than a part not overlapping the wall portion when viewed along a lamination direction of the piezoelectric body, the individual electrode, and the common electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.