ELECTROPHOTOGRAPHIC DEVICE

PURPOSE:To optimize pre-processing time and to prolong the service life of constituting parts by starting pre-processing and effectively utilizing data receiving time before a printing start signal is outputted when the received data quantity reaches a fixed quantity. CONSTITUTION:The data quantity of data received by a data receiving means 2 is measured by a data quantity detection means 2, and when the data quantity reaches a fixed quantity, the detection signal is outputted. The execution of the pre-processing is controlled by a pre-processing control means 3, the information which is equivalent to printing start is detected from the received data by a printing start detection means 4, the printing action is controlled with the printing start signal by a printing control means 5 which outputs the printing start signal, and the execution of the printing of the received data is carried out by a printing means 6 with the control of the printing control means. Thus, the pre-processing control means 3 is driven by the detection signal outputted when the fixed quantity is reached by the received data quantity, and the pre- processing of the printing means 6 can be carried out. Thus, the pre-processing time can be optimized and the service life of the constituting parts can be prolonged.