Ink jet recording head and ink jet recording apparatus
US6712454B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Oct 25, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet recording head has a plurality of ejectors and an ink supply system. Each of the plurality of ejectors has a pressure generating chamber, a nozzle communicating with the pressure generating chamber, and a pressure generating portion. The ejectors are arrayed two-dimensionally. The ink supply system has a common flow path with which a plurality of the ejectors are interconnected. The pressure generating chambers are filled with ink through the common flow path. A change of pressure is generated in the ink in the pressure generating chambers by the pressure generating portions. Thus, ink droplets are ejected from the nozzles. The common flow path is disposed to overlap the pressure generating chambers two-dimensionally. The common flow path has a constricted shape having wide portions and narrow portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.