Abstract: A device of securing a film bearing indicia on the surface of the printing roll under tension in an efficient and automatic way, the device comprising: a first engager and a second engager provided at each end of the film, a first receiving means and a second receiving means provided adjacent to each other on the peripheral surface of the printing roller, wherein the first receiving means is adapted to receive the first engager of the film and wherein the second receiving means is adapted to receive the second engager of the film, the second receiving means comprising a slotted rod rotatively placed in an accommodation groove produced in the printing roll, and a pinion secured to the terminating end of the rod, a rotor rotatively provided at one end face of the printing roll, the rotor having a first tooth zone and a second tooth zone in its periphery, wherein the first tooth zone is adapted to engage with the pinion and wherein the second tooth zone is adapted to engage with a ratchet mechanism provided in p

Abstract: An apparatus of feeding cardboards to a carton making section in the course of which they are individually printed in ink of different colors station by station, the apparatus including a conveyor unit located between each adjacent stations, which conveyor unit comprises an upper conveyor and a lower conveyor adapted to hold the cardboards therebetween, at least one of the upper conveyor or the lower conveyor including spikes projecting toward the cardboards held thereon, thereby securing the transferring of the cardboards from station to station.