Patent ID: 8634085

Claim:
An image forming apparatus comprising: an apparatus body that implements a plurality of functions including an image reading function of reading an image of a document, an image forming function of forming an image, and a display function of displaying content of information provided for a user; a controller that controls a first power state, a second power state, and a third power state, the first power state being a state in which one of the plurality of functions is being performed, the second power state being a state in which one of the plurality of functions is ready to be performed, the third power state being a state in which there is no power to perform any of the plurality of functions or the third power state being a state in which power is lower than power in the first power state or the second power state; a first operation unit that outputs, as a result of being operated by a user, a transition signal for shifting the state of the image reading function and the state of the image forming function to the second power state; a second operation unit that outputs, as a result of being operated by a user, a copy start signal for starting an operation to copy a document by using the image reading function and the image forming function; and a copy controller that controls, when the plurality of functions other than the display function are in the third power state, the operation to copy a document in accordance with a copy start signal which is output from the second operation unit after a transition signal is output from the first operation unit, and that performs control so that another copy start signal which is subsequently output from the second operation unit is not handled during a period from when controlling of the operation to copy a document has started until when a predetermined specific state is detected.