| 摘要 |
PURPOSE:To prevent such a trouble that different informations from two computers are printed on one sheet of a form by providing a means, which inputs a form feed signal to a printer after an input from one computer is finished. CONSTITUTION:When a detecting signal DS1 is inputted from a detecting circuit 2a, a selecting circuit 3 outputs a selecting signal SS1. Thus, the computer C1 is connected to the printer P through a switch circuit 4a, and a data is inputted to the printer P according to a prescribed procedure, and a pint-out is performed. when the signal DS1 is not outputted, the circuit 3 outputs the selecting signal SS4, and simultaneously allows the data of a form feed and a strobe STB1 to be outputted from a form feed generating circuit 5. Then, the form feed is sent to the printer P through the switching circuit 4d, and the printer P performs the form feed, after the print-out. After the circuit 3 outputs the signal SS4 only during this duration, the circuit 3 outputs the selecting signal SS2, and connects the computer C2 with the printer P. Hereafter, the similar processing is performed.
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