| 摘要 |
PURPOSE:To improve the accuracy of stop of an original on a platen glass by turning off a power source of a motor, short-circuiting both pole terminals, and also using an electromagnetic brake, when stopping the original. CONSTITUTION:Each signal shown in the figure is inputted to input ports I1-I7 of a microcomputer 120; and a carrying clock outputted from a photoelectric sensor 105 and a belt clock signal outputted from a sensor 95 are inputted to interrupting terminals INT1, INT2. On the other hand, drivers D1-D6 are connected to output ports O1 and O4-O8 of the microcomputer 120, through which each load is driven. Also, FWD and REV are outputted from the output ports O4, O5 in order to rotate a carrying motor 97 forward and in reverse, and it is rotated in the necessary direction. A driving controlling circuit (not shown in the figure) is connected to the output ports O2, O3, through which the forward or reverse rotation of a belt driving motor 82 and an electric brake control are executed, and also an original is stopped at a desired position by driving an electromagnetic brake (not shown in the figure). |
