Liquid ejecting head and liquid ejecting apparatus
US9308727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2015 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Feb 4, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid ejecting head is provided. A lower electrode layer of the liquid ejecting head is divided into separate lower electrodes corresponding to respective pressure chamber spaces. An upper electrode layer is a continuous electrode. Each of the separate lower electrodes has (i) a wide portion whose width is smaller than the width of a pressure chamber space and (ii) a narrow portion whose width is smaller than the wide portion. The wide portion is positioned in a region that corresponds to the opening of the pressure chamber space and includes the center, when seen in the direction of the length of the pressure chamber space, of the pressure chamber space, and the narrow portion continuously extends from the wide portion to a region that corresponds to outside of the opening of the pressure chamber space in the direction of the length of the pressure chamber space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.