Liquid discharge head and liquid discharge device
US12103304B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2022 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Mar 30, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid discharge head includes a pressure chamber substrate that is provided with a plurality of pressure chambers, a piezoelectric body that is driven to apply pressure to liquid in the pressure chambers, an upper electrode that is provided above the piezoelectric body for applying a voltage to the piezoelectric body, a lower electrode that is provided below the piezoelectric body for applying a voltage to the piezoelectric body, a detection resistor that is provided below the piezoelectric body for detecting temperature of the liquid in the pressure chambers, and a first wiring portion that is electrically coupled to the detection resistor. The first wiring portion includes a first part that is extended above the piezoelectric body, and a second part that is provided in at least a part of a through hole penetrating the piezoelectric body and electrically coupled to the detection resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.