Inkjet recording head having dynamic vibration absorber
US7494210B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2005 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | May 25, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/055
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An inkjet recording head includes a base member, an ink channel unit, a plurality of piezoelectric elements, and a dynamic vibration absorber. The ink channel unit is formed with a plurality of nozzle holes and a plurality of ink pressure chambers. The ink channel unit includes a diaphragm that defines part of each ink pressure chamber. Each piezoelectric element has one end fixed to the base member and another end attached to the diaphragm. Each piezoelectric element generates displacement in a displacement direction for deforming the diaphragm to eject ink droplets through a corresponding one of the plurality of nozzle holes. The dynamic vibration absorber is mounted on the base member for damping vibrations of the base member due to a resonance, the resonance occurring in a frequency range less than or equal to a predetermined frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.