Thermal recording apparatus
US4074280A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Nov 10, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermal recording apparatus for recording an information signal on the heat-sensitive recording medium in a form of visible information comprises a plurality of heat-generating resistance elements, a drive circuit for supplying selectively drive current to said heat-generating resistance elements in response to the information signal, a recording medium disposed in contact with the plurality of heat-generating resistance elements and adapted to change color upon sensing heat, means for driving the plurality of heat-generating resistance elements and the recording medium relative to each other, and a switching circuit means for inverting the direction of the drive current applied to the heat-generating resistance elements in a predetermined manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.