Patent ID: 8724126

Claim:
A printing apparatus capable of executing color printing and monochrome printing, comprising: a mode controller configured to control a monochrome printing mode where the monochrome printing is executed, a first mode where reception of a printing job, which is print data, from a driver stops in response to running out of a color image forming medium, and a second mode where the reception of the printing job stops and procession to the monochrome printing mode is possible; an exclusive controller configured to control the reception of the print job and receive only one printing job in a first time period; and a print executing unit which execute printing on the basis of the printing job received by the exclusive controller, while stopping the reception of the printing job in the first mode, the mode controller deleting all accumulated printing jobs from the printing apparatus, which have been accumulated in the printing apparatus before stopping the reception of the printing job in the first mode, in the first mode, the exclusive controller maintaining stopping the reception of the printing job until receiving a releasing command for releasing the stopping of the reception of the printing job from the driver that is only a driver allowed to send the releasing command to the printing apparatus, and the exclusive controller receiving the printing job from the driver only when simultaneously receiving the releasing command from the driver, the exclusive controller receiving only one printing job each time receiving the releasing command, in the first mode, when the mode controller receives a request for proceeding to the second mode, the mode controller permitting a mode to proceed from the first mode to the second mode by notifying the driver only the monochrome printing is possible, and when the exclusive controller receives a monochrome printing command from the driver in the second mode, the mode controller permitting the mode to proceed to the monochrome printing mode, the print executing unit executing the printing on the basis of the printing job from the exclusive controller, and then the mode controller permitting the mode to return to the second mode.