Patent ID: 10799977

Abstract:
To provide a heater chip which is excellent in energization heat generation characteristic of the ironing portion thereof, and which can efficiently and stably perform a joining process of joining a conducting thin wire to a terminal member. The heater chip comprises an ironing portion located at the lowermost position in a posture of a normal use mode and a pair of connection terminal portions and formed integrally with the ironing portion and extending symmetrically or asymmetrically upward from a left and a right ends of the ironing portion. The ironing portion has a cross-sectional area equal to or smaller than the cross-sectional areas of the connection terminal portions and on the path of a current flowing in the heater chip when energized. A concave portion is formed on one side face of the ironing portion. A thermocouple is attached to the back face of the ironing portion through a protrusion.