Thermal head containing an insulating, heat conductive layer
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United States of America Patent
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-
Jul 4, 1989
Issued Date -
N/A
app pub date -
Sep 6, 1988
filing date -
Dec 25, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thermal head in which a glazed layer, an undercoat layer, an electric power supply conductor layer and a protection layer are successively laminated on the surface of an insulating substrate, wherein an insulating heat conductive layer with a good electrical insulating property and high heat conductivity is disposed just below the protection layer. The temperature distribution in the heat generating portion is made uniform to eliminate the heat generation dots destructed with the low electric power applied. In addition, the reliability of the thermal head can significantly be improved, as well as the unevenness in the printing can be eliminated.
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