Ink jet head including phase transition material actuators
US5729262A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1994 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Aug 30, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14274
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet printing head includes a nozzle plate including nozzles, a plurality of ink cavities each containing ink, a plurality of actuators each made of a phase transition material, an oscillating plate having a top surface with which the ink in each ink cavity is brought into contact, and having a bottom surface bonded to each actuator, the oscillating plate pressing the ink in each ink cavity in association with the actuators to discharge ink drops from the nozzles at a sheet of paper so that an image is printed on the paper. In this ink jet printing head, the ink in each ink cavity is pressed by the oscillating plate in accordance with volumetric changes of the actuators, the volumetric changes being developed by applying an electric field to each actuator at a given electric field intensity, the given electric field intensity causing a transition of the phase transition material from an antiferroelectric phase into a ferroelectric phase to take place or causing a transition of the phase transition material from the ferroelectric phase into the antiferroelectric phase to take place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.