PURPOSE: To automatically clean a type drum interlockedly with reversing of an ink ribbon and maintain a drum surface to be always clean, by connecting an arm of a type drum cleaning brush to a reversing lever for reversing the ink ribbon.
CONSTITUTION: When the ink ribbon 2 placed along a ribbon guide 21 provided at the outside periphery of the type drum 1 is gradually wound around a roll 23 on one side so that an end of the ribbon 2 is approached, a reversing bar 24 is let out, whereby the reversing lever 25 is pulled up to operate a microswitch 26 for driving a reverse running. Interlockedly with the pulling-up of the bar 25, the brush arm 28 is moved to the side of the drum 1, and the cleaning brush 27 is slidden against the surface of the rotating type drum 1 through a brushing port 30, whereby ribbon dusts and the like adhered to the drum 1 are scraped off and are received into a dust receiver 31.
OOBOSHI MASAAKI
FUJIMOTO MASATO
