Patent ID: 9749479
Date: 2017-08-29
CPC Classifications: G03G,H04N

Claim:
1. An image forming apparatus comprising: an engine control unit configured to control an image forming operation and to communicate with a controller which controls image information for performing image forming, wherein a communication between the engine control unit and the controller is able to be interrupted; and a storage unit configured to store information relating to a state change of the image forming apparatus during interruption of the communication between the engine control unit and the controller, wherein the stored information includes first information which indicates the state change of the image forming apparatus has occurred during the interruption, or second information which indicates the state change of the image forming apparatus has not occurred during the interruption, wherein the engine control unit and the storage unit communicate with each other by being coupled, wherein, in a case where the communication between the controller and the engine control unit is recovered from the interruption, the engine control unit notifies the controller of the first information or the second information, and wherein, in a case where the engine control unit notifies the controller of the first information, the controller inquires the engine control unit about a state of the image forming apparatus after the recovery from the interruption, and in a case where the engine control unit notifies the controller of the second information, the controller does not inquire the engine control unit about the state of the image forming apparatus after the recovery from the interruption.