Process for manufacturing an electrothermal transducer for a liquid jet recording head by anodic oxidation of exposed portions of the transducer
US4777494A · kind A · utility
24Cited by
13References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1987 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Feb 2, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/1646
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a process for manufacturing an electrothermal transducer for a liquid jet recording head comprising a support, a resistive heater layer overlying the support, at least a pair of electrodes electrically connected with the resistive heater layer and disposed opposite to each other, and a protective layer composed of an insulating material, at least defective portions in the protective layer of the electrothermal transducer are subjected to an anodic oxidation treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.