Patent ID: 9001351
Filing Date: 2015-04-07
Classification: G03G,G06K,Y02D

Abstract:
1. An image forming apparatus comprising: a first control unit for processing input image information; a second control unit for communicating with the first control unit; a third control unit for controlling an operation of the image forming unit by communication with the second control unit; and a communication unit for communication between the first and third control units, wherein in a first mode in which power is supplied to the first, second and third control units, the first and third control units communicate via the second control unit, wherein in a second mode, in which a power consumption is lower than that in the first mode, the first and third control units communicate via the communication unit without communicating via the second control unit, and wherein in a case where the second mode is changed to the first mode, information for transition from the second mode to the first mode is transmitted via the communication unit from the first control unit to the third control unit, or the information for transition is transmitted via the communication unit from the third control unit to the first control unit.