IMAGE FORMING APPARATUS

摘要

An image forming apparatus includes: a motor unit configured to give a rotary drive force to rotary members for conveying a recording medium; a switch circuit provided in a power supply line connecting a power source and the motor unit to supply electric power, connecting the motor unit to the power source upon closure of the body cover, and disconnecting the motor unit from the power source upon opening of the body cover; a power-off detecting section; a rate-of-voltage-change calculating section; and a control section. The control section deactivates each of mechanisms in the image forming apparatus when the power-off detecting section detects shutoff of power supply from the power source, and reactivates each of the mechanisms, provided that the rate of change of voltage calculated by the rate-of-voltage-change calculating section has reached a predetermined threshold, when the power-off detecting section detects electric power is supplied from the power source.

主权项

1. An image forming apparatus comprising:
a motor unit configured to give a rotational drive force to each of rotary members for use in conveying a recording medium; an interlock switch circuit provided in a power supply line capable of connecting a power source and the motor unit to supply electric power, the interlock switch circuit connecting the motor unit to the power source upon closure of the body cover and disconnecting the motor unit from the power source upon opening of the body cover; a power-off detecting section configured to, based on a voltage of the power supply line, detect whether or not power supply from the power source is shut off; a rate-of-voltage-change calculating section configured to calculate a rate of change of voltage of the power supply line; and a control section configured to deactivate each of mechanisms included in the image forming apparatus when the power-off detecting section detects shutoff of the power supply and reactivate each of the mechanisms, on condition that the rate of change of voltage calculated by the rate-of-voltage-change calculating section has reached a predetermined threshold value, when the power-off detecting section detects the voltage from the power supply line.