Exhaust system of image forming device
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsHideo Yoshihara, Masamitsu Ukai, Yoshiteru Hattori
Life of this patent
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Abstract
A low-voltage power source circuit board is provided downstream in relation to the flow of air introduced through an intake hole and exhausted by a power source fan. Heat sinks are provided on the low-voltage power source circuit board on electronic parts that generate a large amount of heat, the plate surfaces of the heat sinks being arranged along the direction of airflow, thereby minimizing their resistance to the airflow. Air including heat generated from these electronic parts is exhausted by the power source fan without the air heating the high-voltage power source circuit board or engine circuit board that are disposed upstream in relation to the direction of airflow.
Claims11
An image forming device comprising:
- a main casing having a first surface and a second surface opposing the first surface;
- a processing unit that is detachably mounted in the main casing and that forms images on a recording medium;
- a power source circuit board disposed inside the main casing for outputting a drive voltage to drive the processing unit;
- and
- a high-voltage power source circuit board disposed below the processing unit, the high-voltage power source circuit board outputting a drive voltage of a higher voltage than the drive voltage outputted by the power source circuit board, wherein:
- the first surface of the main casing is formed with a first exhaust outlet for exhausting air from the main casing;
- and
- the power source circuit board is disposed adjacent to the first exhaust outlet and is positioned closer to the first exhaust outlet than the high-voltage power source circuit board.
Dependencies are inferred from the claim text.