Liquid droplet jet head, liquid droplet discharging apparatus, and image forming apparatus
US8123338B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2009 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Aug 20, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid droplet jet head includes a pressure liquid chamber substrate including nozzles discharging liquid droplets and pressure liquid chambers communicated with the nozzles, a vibration board partially forming wall surfaces of the pressure liquid chambers, and a pressure converter vibrating the vibration board to change pressure in the pressure liquid chambers to discharge the liquid droplets from the nozzles, and including a piezoelectric element having an active region and a inactive region and electrodes disposed to apply an electric force to the active region and not to apply an electric force to the inactive region, and a groove separating the active region from the inactive region formed not so deep as to reach one of the electrodes in a portion in the inactive region facing the vibration board. In the liquid droplet jet head, the pressure liquid chamber substrate is supported by the inactive region of the piezoelectric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.