Invention Grant
US07768541B2 Heating resistor element, manufacturing method for the same, thermal head, and printer 有权
加热电阻元件,制造方法相同,热敏头和打印机

Heating resistor element, manufacturing method for the same, thermal head, and printer
Abstract:
Provided is a heating resistor element including: an insulating substrate including a glass material; a heat accumulating layer bonded to the insulating substrate through heating to temperature ranging from an annealing point to a softening point in a state of being adhered to a surface of the insulating substrate, and including the same material as the glass material of the insulating substrate; and a heating resistor provided on the heat accumulating layer, in which, on at least one of bonded surfaces between the insulating substrate and the heat accumulating layer, at least one of the insulating substrate and the heat accumulating layer is provided with a concave portion in a region opposed to the heating resistor to form a hollow portion. Accordingly, deformation caused by a difference in coefficient of thermal expansion is suppressed to improve printing quality.
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