Patent ID: 9536185
Date: 2017-01-03
CPC Classifications: G03G,G06F,G06K,H04N

Claim:
1. An image forming apparatus comprising: a printing unit configured to print an image on a sheet; an engine control unit configured to control the printing unit to execute a preparation operation of the printing unit; an error detection unit configured to detect an error of the printing unit; a function restriction unit configured to restrict a function based on the error detected by the error detection unit; and a power control unit configured to shift, in a state in which the function is restricted by the function restriction unit, the image forming apparatus from a standby state in which power is supplied to the engine control unit to a sleep state in which power is not supplied to the engine control unit; wherein the engine control unit does not control the printing unit to execute the preparation operation of the printing unit when the power control unit returns the image forming apparatus from the sleep state to the standby state in a state in which the function is restricted by the function restriction unit.