Thermal head

Details Thermal head Thermal head

1985-03-15

1986-11-18

Evans, A.

Recorders

Thermal recording

346139C, 219543, 400120, G01D 1510

Patent

active

046239030

ABSTRACT:
An auxiliary heating element is provided near at least one end of an array of main heating resistor elements, thereby preventing thermal diffusion near the at least one end of the array and providing uniform printing density and prolonged service life. The adjacent portion of the auxiliary heating resistor element and the main heating resistor elements may be connected in series or in parallel, thereby simplifying the feeder pattern to the heating resistor elements, hence simplifying the structure of connectors and a drive circuit concerned, providing uniform image density and realizing prolonged service life of thermal head, without raising cost.

REFERENCES:
patent: 4251822 (1981-02-01), Hara et al.
patent: 4491853 (1985-06-01), Hayashi et al.

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