Ink jet recording head and ink jet recording apparatus using this head
US6685305B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Apr 11, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/03
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet recording head and an ink jet recording apparatus used this head, in which ejectors are arrayed in a two-dimensional matrix, and the necessary width of each of plural common ink branch paths is reduced, and the density arraying the ejectors is made to be high, are provided. The ink jet recording head is formed by layering and adhering a nozzle plate, a common ink path plate, an ink supplying plate, a connecting path plate, a pressure chamber plate, a vibration plate, and piezoelectric actuators. The ink supplying plate is made of a resin film whose stiffness is low. Since the ink supplying plate also works as air dampers for the plural common ink branch paths, even when the width of each of the plural common ink branch paths is made to narrow, necessary and sufficient acoustic capacitance to prevent crosstalk from generating between adjacent two ejectors can be obtained. With this structure, the density arraying the ejectors is able to be high. Further, a special plate for the air dampers is not required, therefore, the number of plates can be decreased and its manufacturing cost can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.