JPH0679172B

PURPOSE:To precisely match the position of the first face of the paper with that of the second face and to prevent dislocation in front and back faces print ing by providing a positioning means by means where a regulating means and a lateral registration adjusting means directly and mutually perform positioning without using a device main body. CONSTITUTION:The flapper 11 is positioned upward and the paper P is inserted into lateral registration boards 24a and 24b by a conveying roll 10 and guides 12a and 12b and the roll 10 is stopped. At the next stage, a semicircular roll 13 is counterclockwise rotated and stopped when the trailing edge of the paper P passes through the flapper 11. At this time, a pulse motor 27 is already clockwise rotated, enlarges the lateral registration boards 24a and 24b and waits for the paper so that the board 24a is made to abut on the base edge of a lateral registration regulating tip 19. Therefore, simultaneously with the stop of the roll 13, the motor 27 is counterclockwise rotated by the prescribed number of pulses, moves the boards 24a and 24b inwardly by prescribed lateral width and is precisely made the position of the paper P in a free condition coincident with the position of the paper P of a cassette 2.