1. A Job executing device, comprising: a Job executing unit of executing a job concerning image data; an execution instruction-receiving unit of receiving an instruction for job execution sent to the Job executing unit by a user authenticated by an authentication unit; a memory unit of storing a notification destination corresponding to user identification information inputted for user authentication; and a notification unit of notifying the notification destination corresponding to the inputted user identification information of a notification of the job execution, after receipt of the instruction for the job execution by the execution instruction-receiving unit.