Multi-nozzle ink jet head and manufacturing method thereof
US7425058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Feb 5, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49401
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A multi-nozzle ink jet head using piezoelectric elements and a manufacturing method thereof are disclosed. A head (1) has a nozzle member (10) in which a plurality of nozzles (12) are formed, a pressure chamber wall member (14) in which a plurality of pressure chambers (15) are formed, and piezoelectric type actuators that have a diaphragm (18) and a plurality of piezo elements (19) and apply pressure to each of the plurality of pressure chambers for ejecting ink from the nozzles. A rigid coating member (23, 25) is provided on inner surfaces of the pressure chamber walls or on parts of the diaphragm in contact with the pressure chamber wall member, thus increasing the rigidity of the pressure chamber walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.