A method for controlling the drive of the transport means for an automatic documents transport device

摘要

PURPOSE:To stop an original at a prescribed position on a transparent plate sufficiently correctly in stable ways independently of the kind of the original by detecting the transport speed of a transport means during the normal revolu tion of an electric motor and controlling the time for generating a brake action on the electric motor on the basis of the transport speed. CONSTITUTION:When a rotary shaft 38 is drive-connected through a control clutch 46 with an electric motor 14 in normal revolution, the rollers 40 and 42 of a transport means 36 start revolution in the clockwise direction, and original sent between the rollers 40, 42 and a transparent plate 2 is transported rightward by the transport means 36. Then, the rear edge of the original is detected by a detector 16, and after the lapse of a prescribed time T-1 from the detection time point, the application of the voltage for the normal revolution of the electric motor 14 is suspended. Then, the electric motor 14 is applied with a brake action by a prescribed time, and the revolution of the rollers 40 and 42 of the transport means 32 is suspended, and the original is stopped at a prescribed position on the transparent plate 2.