Abstract: A CPU of a printing apparatus stores print data that is output from an output apparatus in a storage portion, and waits for the print switch on an operation panel to be operated before printing. If the print data pertaining to printing is administrative-use print data for which the output result is to be provided to a store clerk only once, then the CPU deletes the print data from the storage portion after printing. If the print data pertaining to printing is service-use print data for which the output result is to be repeatedly provided to customers, then the CPU continuously stores the print data in the storage portion after printing.

Abstract: The image forming apparatus includes a display portion that displays switchably at least two different operation screens, a timer that measures a time, an apparatus control portion that controls switching to one of the at least two different operation screens depending on the time, and a management portion that accumulates a first program for displaying the one operation screen and a second program for displaying the other operation screen. The apparatus control portion reads and executes either the first program or the second program depending on the time from the timer.

Abstract: A CPU of a printing apparatus stores print data that is output from an output apparatus in a storage portion, and waits for the print switch on an operation panel to be operated before printing. If the print data pertaining to printing is administrative-use print data for which the output result is to be provided to a store clerk only once, then the CPU deletes the print data from the storage portion after printing. If the print data pertaining to printing is service-use print data for which the output result is to be repeatedly provided to customers, then the CPU continuously stores the print data in the storage portion after printing.