Liquid jet recording head with a protective layer formed by converting the surface of a transducer into an insulating material
US4694306A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | May 20, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/1646
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid jet recording head comprises a liquid discharging portion having an orifice for discharging liquid to form liquid droplets and a heat acting zone communicated with said orifice at which heat energy for forming flying liquid droplets acts on the liquid, and an electrothermal transducer, having at least a pair of confronting electrodes connected electrically to a heat generating resistance layer provided on a substrate thereby to form a heat generating portion between these electrodes, which includes a protecting layer which is formed by modification of the surfaces of said electrodes and is made into an insulating inorganic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.