Patent attributes
An image forming system includes an image forming apparatus and a user interface device. The image forming apparatus accepts a print command and forms an image according to the print command. The user interface device communicates with the image forming apparatus. Power control and power supply are performed for the image forming apparatus and the user interface device separately. The image forming apparatus includes a detection section, a storage section, a re-establishment section and a mode control section. The detection section detects as to whether or not communication between the image forming apparatus and the user information device is disconnected. The storage section stores modes of the image forming apparatus and user interface device when the detection section detects disconnection. The re-establishment section re-establishes the communication. The mode control section controls modes, after the re-establishing, of the image forming apparatus and user interface device based on the stored modes.