PURPOSE: To enhance productivity and operability of a thermal printer head as well as reduce the cost of it by a method in which the electrical connection between heating resistors, IC for driving, and printed circuit substrate is made by wire bonding, and the printed circuit substrate is made of a metal or glass- organic resin laminate board.
CONSTITUTION: A drive IC 6 to be operated according to picture signals by current supplied to a heating resistor 3 is attached to the upside of an insulator substrate 11 and connected through a wire bonding 13 and a lead wire 4 to the heating resistor 4. A connector 10 for connecting external circuits is provided on a printed circuit substrate 12 made of a metal or glass-organic resin laminate board, and a lead wire 5 through which picture signals to be sent from the connector 10, control signals, and power are transmitted to the IC 6 is formed on the connector 10. The lead wire 5 is connected to the IC 6 by the wire bonding 13. The needs for using expensive flexible circuit substrate and gold connectors can thus be eliminated.
NAMIKI KOJI
KATSUNO TOSHIKI
KOBAYASHI KAZUO
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