Ink jet head and manufacturing method thereof
US6719410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jun 12, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14491
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet head using bimorph drivers and a manufacturing method thereof are disclosed. The head has pressure chambers 6 that each communicates with a nozzle 9 and stores ink, and bimorph drivers that each has a piezoelectric body 1 and a vibrating plate 2 and that are for applying pressure to the pressure chambers 6; three peripheral sides of each of the bimorph drivers are fixed, and the other side is not fixed. Since one side of the piezoelectric body of each of the bimorph drivers is made to be free, tensile stress can be released without pressure leakage. As a result, the displacement and pressure required for ejecting ink drops can be obtained even if the width of the piezoelectric bodies is narrow. A high-density multi-nozzle head can thus be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.