| 摘要 |
PURPOSE:To prevent a succeeding superimposed body from jamming inside the machine, by detecting a first inside jam of the superimposed body of an original and sensitizer paper speedily with a simple circuit structure, in the diazo-copying machine in which plural superimposed body of the original and the sensitizer paper are conveyed. CONSTITUTION:A microcomputer (CPU) 10 is provided with input terminals P1-P5 and output terminals P6-P8. A light emitting diode 20 is connected to the output terminal P6 via an inverter 18, and when an inside jam occurs, this diode 20 is operated, warning an operator of this occurrence. A buzzer 24 is connected to the output terminal P7 via an inverter 22, so that if a paper jam occurs, this buzzer is made so as to be driven for warning. In this connection, at normally, the time required till each sensor outputs the detection signal after detecting each rear end of an original and sensitizer paper is previously known, so that if even one piece in plural counters installed inside the CPU 10 passes the specified time, a fact that the paper jam is occurring is made out.
|
