To provide an image processing apparatus for switching an operation mode between an ordinary power supplying mode and a power saving mode for suppressing power consumption more than the ordinary power supplying mode. The image processing apparatus includes an operation panel operated by a user to execute an operation of the image processing apparatus, a display unit to display a state of the image processing apparatus and various instructions to the user on the operation panel, a discrimination information obtaining unit to obtain a user discrimination information from a non-contact medium in which the user discrimination information is stored to permit use of the image processing apparatus, an information discrimination unit to discriminate approval or disapproval of use of the image processing apparatus from the user discrimination information obtained by the discrimination information obtaining unit, an operation mode discrimination unit to discriminate whether the operation panel is operated and the operation mode of the image processing apparatus is switched from the power saving mode to the ordinary power supplying mode or not, and a control unit to control the display unit to display that the use of the image processing apparatus is permitted when the operation mode discrimination unit discriminates that the operation mode of the image processing apparatus is switched to the ordinary power supplying mode after the image processing apparatus obtains the user discrimination information from the discrimination information obtaining unit on the power saving mode and when the information discrimination unit discriminates that the image processing apparatus is permitted to use.