IMAGE FORMING DEVICE

PROBLEM TO BE SOLVED: To prevent the occurrence of image failure by executing recording operation precedently by an ink jet recording means in the case where recording materials recorded by a plurality of recording means are outputted in a mixed manner, and also executing by other recording means after the lapse of drying time recognized by an ink drying time recognition means. SOLUTION: When a recording signal is received from a host device 20, at first, the recording signal is determined as to containing or not recording operation by an ink jet recording means 3, and if containing no operation, recording operation is executed by laser beam recording means 2, resulting in the completion of image forming. When determined as containing recording operation by the ink jet recording means 3, ink jet recording means 3 is operated precedently so as to allow materials to be stacked in a manner being sorted sheet by sheet into each bin 9 of a sorter 8. Furthermore, ink drying time recognition time is recognized by each information obtained, and after the lapse of a predetermined ink drying time, recording operation is conducted to be completed by the laser beam recording means 2. In this manner, a disarrangement of images can be prevented.