Thermal head
US4835548A · kind A · utility
5Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Jun 17, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/345
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a thermal head, an electrical and heat insulating layer of glass is formed on a substrate made of ferrie Fe-Cr stainless steel. Fe-Cr stainless steel contains 16 to 18% chromium by weight. Heating resistors having a specific patterns are formed on the electrical and heat insulating layer and electrically connected to the substrate acting as a common electrode. Lead wires of an A.lambda.-Si-Cu alloy, as individual electrodes, are formed on the layer and the heating resistors. The heating resistors and the lead wires are covered by a protective layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.