Thermal head
US10953663B2 · kind B2 · utility
0Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2018 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Jul 12, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/3357
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal head includes: an underglaze layer provided on an insulating substrate; an electrode provided on the underglaze layer; a heat generator provided on the electrode; a first protective layer containing a glass material and covering at least the heat generator; and a second protective layer provided on the first protective layer, having a melting point higher than that of the first protective layer, and made of a material whose thermal expansion coefficient at a temperature of 1000° C. or lower is substantially constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.