Electric field driven ink jet printer having a resilient plate deformable by an electrostatic attraction force between spaced apart electrodes
US5739831A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1995 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Sep 15, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14314
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet print head of the electric-field drive type includes: a nozzle plate including a ink spouting hole; a resilient plate deformable when it receives an electrostatic attraction force; a pressure generating chamber structure formed between the nozzle plate and the resilient plate; a first electrode formed on the resilient plate, the first electrode being located corresponding to the pressure generating chamber structure; a second electrode spaced apart from the first electrode a distance corresponding to a predetermined gap, the second electrode being undeformable when receiving the electrostatic attraction force; a photo conductive layer, one surface of the photo conductive layer being electrically connected to the second electrodes; and a substrate made of transparent material, the substrate including a transparent electrode which is electrically connected to the other surface of the photo conductive layer, wherein the electrostatic attraction force generated between the first and second electrodes causes the pressure generating chamber structure to be expanded, and removal of the electrostatic attraction force allows the pressure generating chamber structure to be compres…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.