Ink-jet printhead
US7004576B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Feb 25, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14419
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink-jet printhead includes a cavity unit and an actuator stacked together. The cavity unit is provided with a row of nozzle orifices and a row of pressure chambers communicating with the respective nozzle orifices. The actuator has a plurality of active portions for selectively actuating the respective pressure chambers to eject ink through the respective orifices. The cavity unit is a stack of plates including a cavity plate formed with the pressure chambers, a manifold plate formed with a manifold chamber and an intervenient plate interposed between the cavity plate and the manifold plate. The manifold chamber supplies ink from an external ink supply source to each of the pressure chambers. The intervenient plate is formed with a filter portion which filters ink provided from the external ink supplying source to the manifold chamber. The intervenient plate is formed with a damper wall facing the manifold chamber. The damper wall has a partial thickness of the intervenient plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.