Image forming apparatus

摘要

An image forming apparatus to safely supply or interrupt power according to opening or closing of a cover includes a power source unit to output low power and high power, an interlock switch unit to be turned on or off according to opening or closing of a cover, and an engine power circuit unit. The engine power circuit unit includes cover opening/closing sensing switches connected to the interlock switch unit to be turned on or off according to whether the interlock switch unit is on or off, and power supply switches connected to the power source unit to apply or interrupt the power from the power source unit according to a determination of whether the cover opening/closing sensing switches are on or off.

主权项

1. An image forming apparatus to apply or interrupt operating power according to opening or closing of covers of the image forming apparatus, comprising:
a power source unit including a first power source to output low power and a second power source to output high power; an interlock switch unit connected to the first power source to be turned on or off according to closing or opening of the covers; and an engine power circuit unit, the engine power circuit unit including:
a plurality of cover opening/closing sensing switches connected to the interlock switch unit while being connected to each other in series so as to be turned on or off according to a determination of whether the interlock switch unit is on or off; anda plurality of power supply switches connected to each other in series and connected to the second power source and the cover opening/closing sensing switches to apply or interrupt the high power output from the second power source to an engine according to whether the cover opening/closing sensing switches are on or off,wherein the plurality of cover opening/closing sensing switches is provided in series between a ground and the second power source such that the plurality of cover opening/closing sensing switches are connected to the plurality of power supply switches via voltage distribution resistors configured to create a predetermined potential difference for turning on the plurality of power supply switches.