A print data transmitting apparatus for transmitting print data to an image forming apparatus having a function of creating a printed material including a plurality of pages by inserting a plurality of sheets of special paper constituting one set into a predetermined position one by one. By connecting the gate of the JFET to the higher bias terminal of the output coil of the transformer, the forward biased turn on function of the normally off JFETs can be achieved. The additional cycle oil is obtained by vacuum separation of the CSO.