An image processing apparatus comprising a piece of hardware composed of a system-on-chip enabling an ASIC and an ASIC to carry out an image processing, and a memory , the piece of hardware constituting a system control section called as a system controller , the system control section comprising: a use condition generation section ; a constitution information acquisition section configured to acquire constitution information of the device itself; and an assignment section configured to acquire a category of an image processing executed by the device itself, and assign the image processing to the piece of hardware, which is determined based on the category of the image processing, a hardware use condition definition table in which conditions for using a piece of hardware installed in a system controller of the device itself are set, and the constitution information acquired by the constitution information acquisition section, to execute it; and a power supply control section ; characterized in that the image processing apparatus further comprises an auxiliary storage device that comprises a use condition information storage device that stores use condition information; the use condition generation section is configured to generate the hardware use condition definition table through the combination of the information of hardware with the use condition information, to read out the use condition information from the use condition information storage device and to write the hardware use condition definition table in the memory ; and the power supply control section is configured to carry out a control of power supply on the piece of hardware of which the ON / OFF of the power supply can be switched among the pieces of hardware installed in the system controller . a use condition generation section ; a constitution information acquisition section configured to acquire constitution information of the device itself; and an assignment section configured to acquire a category of an image processing executed by the device itself, and assign the image processing to the piece of hardware, which is determined based on the category of the image processing, a hardware use condition definition table in which conditions for using a piece of hardware installed in a system controller of the device itself are set, and the constitution information acquired by the constitution information acquisition section, to execute it; and a power supply control section ; characterized in that the image processing apparatus further comprises an auxiliary storage device that comprises a use condition information storage device that stores use condition information; the use condition generation section is configured to generate the hardware use condition definition table through the combination of the information of hardware with the use condition information, to read out the use condition information from the use condition information storage device and to write the hardware use condition definition table in the memory ; and the power supply control section is configured to carry out a control of power supply on the piece of hardware of which the ON / OFF of the power supply can be switched among the pieces of hardware installed in the system controller . <EOS>