Thermal print head

Details Thermal print head Thermal print head

B - Operations, Transporting

41

J

314/41

B41J 2/345 (2006.01)

Patent

CA 1123892

ABSTRACT A thermal print head presenting a plurality of heaters formed by a plurality of spaced-apart electrical conductors carried by a support with a surface area provided at an end portion of each conductor and a common electrical conductor having a thin portion for each surface area which is spaced from and essentially parallel to the surface area with resistive material disposed between the common electrical conductor and each of the surface areas. The print head provides a path for current flow and thermal flow through the resistive material for each heater in a direction essentially perpendicular to the surface areas. The common electrical conductor can be a metallic material to provide a good wear surface as well as high thermal and electrical conductivity. The structure requires less energy input per electrical conductor than prior art structures reducing the cost of drive circuitry.

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