Liquid discharge apparatus and method of driving liquid discharge head
US12214592B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2023 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Aug 2, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid discharge apparatus includes a diaphragm, a pressure chamber substrate including a partition wall partitioning a pressure chamber communicating with a nozzle discharging liquid, a piezoelectric element including a first active portion that overlaps a center of the pressure chamber and a second active portion that overlaps the pressure chamber at a position closer to an outer edge of the pressure chamber than the first active portion, and a drive signal generation portion that generates a discharge signal for discharging the liquid by being supplied to one of the first active portion and the second active portion and a correction signal that is supplied to the other of the first active portion and the second active portion, in which a potential of the discharge signal changes over time and a potential of the correction signal is constant during a discharge period for discharging the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.