Thermal pen tip
US4367395A · kind A · utility
7Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1980 |
| Grant date | Jan 4, 1983 |
| Priority date | — |
| Expiry date | Feb 25, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal pen tip comprising a heat reserve layer formed on an insulating substrate; a resistance layer for heating formed on said heat reserve layer; and a protective layer formed on said resistance layer, wherein said heat reserve layer has a convex top having a curvature and a flat surface on said convex top, so as to have a size corresponding substantially to a width of a line and said resistance layer for heating is formed on said flat surface of said heat reserve layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.