Patent ID: 9052667
Filing Date: 2015-06-09
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image forming unit configured to form an image; a power supply unit configured to supply electric power to the image forming unit via a power supply line; a door configured to be opened for accessing the image forming unit; an output unit configured to output a signal indicating whether the door is open or closed; a control unit configured to determine the signal output from the output unit at a predetermined sensing cycle period; an interruption unit configured to interrupt electric power supplied by the power supply unit via the power supply line while the door is open, the interruption unit comprising a switching contact located on the power supply line, the switching contact opens to interrupt electric power supplied by the power supply unit when the door is opened; and a storage unit configured to store information indicating that the interruption unit interrupts electric power supplied by the power supply unit, wherein the signal comprises a first signal indicating that the door is open and a second signal indicating that the door is closed, and wherein the control unit clears the information after the second signal is output from the output unit, wherein the switching contact is opened after the first signal is output from the output unit and is closed before the second signal is output from the output unit.