| 摘要 |
PURPOSE:To change the priority readily and to make it possible to use a circuit in general applications by changing the sequence of the detecting circuit signals of the parallel data from a plurality of sensors based on the control of a CPU, and supplying the signal into the CPU in series. CONSTITUTION:At first, a CPU part 11A outputs a switching signal into a selector part 12 so that the outputs of the individual sensors are aligned in the priority in the initial period. Thus, the detection can be performed with a cover-opening/closing detecting photosensor 1, photosensors 2 and 3 for detecting paper kinds A and B and the like having the high priority. Then, the CPU 11A outputs the switching signal into the selector part 12 so that the outputs of the individual sensors have the priority in printing. Namely, the selector part 12 connects the inputs and the outputs. Then, the kinds can be detected with photosensors 4 and 5 for detecting ink-sheet kinds A and B in high priority. Therefore, the priority can be changed in response to each timing. The detection processing for the detection of the rear end of paper after the detection of the ink-sheet kinds and the detection of the front end of the paper through the printing can be performed at a high speed. |
