Thermal head with invertible heating resistors

Recorders – Thermal recording

Patent

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Details

338 22R, 219216, 219504, 219505, G01D 1510, H01C 710, H05B 102

Patent

active

046790560

ABSTRACT:
A thermal head comprising heating resistors with their temperature coefficient of resistance being negative at normal temperature and invertible to be positive as the temperature rises.

REFERENCES:
patent: 4097718 (1978-06-01), Weise
patent: 4316080 (1982-02-01), Wroldewski
patent: 4413170 (1983-11-01), Val et al.

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