Thermal print head
US4450342A · kind A · utility
1Cited by
16References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1982 |
| Grant date | May 22, 1984 |
| Priority date | — |
| Expiry date | Dec 27, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/345
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal print head includes a pair of parallel bars of resistive material. A first set of lines is connected to one bar at equal spacings, a second set is similarly connected to the other bar. Each line of a third set of lines is connected to both bars between the connections of the lines of the other sets. From each line of the third set there are four resistance paths along the bars to adjacent lines of the first and second sets. Each of these paths can be selected to heat the bars along the selected paths to create marks on a paper sheet or web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.