PRINTER CAPABLE OF PRINTING PLURAL JOBS AT THE SAME TIME AND METHOD USING THE SAME

A printer capable of printing multiple printing jobs at the same time and a method thereof are provided to print the printing jobs at the same time and load prints to each loading tray according to each printing job. Each storing part(103a-103c) receives and stores the multiple printing jobs. Each interpreter(105a-105c) receives and converts the stored printing jobs into a printable type, and outputs converted data by each page unit. A printing engine(107) receives and prints the data output from the interpreters by the page unit. A controller(101) individually assigns the received printing jobs to each interpreter and controls the interpreters to prevent the interpreters from outputting the data at the same time. Each flag represents an individual operation state of the interpreters. The controller checks a flag state and performs an assigning operation based on the checked flag state. The controller makes the prints loaded to the loading trays for each printing job by controlling the printing engine.