Patent ID: 9568875
Date: 2017-02-14
CPC Classifications: G03G

Claim:
1. An image forming apparatus comprising: a notifier for providing a notification; a power source for generating a power source voltage; a first replaceable unit for performing a specific operation by means of the power source voltage; a first body connector for allowing the first replaceable unit to be detachably connected thereto, the first body connector including a body power terminal connected to the power source; a power supply switch for turning on and off supply of the power source voltage from the power source to the body power terminal; and a power supply controller for controlling operations of the power supply switch and the notifier, wherein the first replaceable unit includes wherein the unit connector includes wherein the image forming apparatus further includes: wherein the first body connection terminal of the first body connector has a first end connected to the first unit connection terminal and a second end connected to the detection wire, wherein the second body connector has a second body connection terminal with a first end connected to ground and a second end connected to the unit connector, wherein the electrical connection detector measures a voltage value of a voltage impressed to the detection wire from the power source through the resistor and subsequently determines whether the measured voltage value is less than a predetermined reference voltage value on the basis of which the electrical connection detector detects whether the first body connection terminal of the first body connector and the second body connection terminal of the second body connector are connected electrically; wherein the power supply switch turns on and off supply of the power source voltage from the power source to all of the body power terminals included in the first and second body connectors, wherein when the detachment necessity determiner determines that one of the first and the second replaceable units needs to be detached for replacement, the power supply controller causes the power supply switch to turn off supply of the power source voltage from the power source to all of the body power terminals included in the first and the second body connectors, and subsequently causes the notifier to provide a notification recommending replacement of the first replaceable unit, the notification including information representing that it is time to replace the one of the first and the second replaceable units determined necessary to be detached, and when the electrical connection detector detects the electrical connection, the power supply controller causes the power supply switch to turn on supply of the power source voltage from the power source to all of the body power terminals included in the first and second body connectors.