Also, {TAIL ~ the oscillating circuit} 423 is connected with the base of the transistor 422 through the current limiting resistor 424 and the diode 425 for controlling the heating frequency of the heating wire 50 of {HEAD ~ the heating mechanism} 41 
Also , { TAIL ~ the oscillating circuit } 423 is connected with the base of the transistor 422 through the current limiting resistor 424 and the diode 425 for controlling the heating frequency of the heating wire 50 of { HEAD ~ the heating mechanism } 41
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