Canon Kabushiki Kaisha

Tooru Kuroki

Hiromasa Katayama

Provided is an image forming apparatus including:

Image forming apparatus

An image forming apparatus including: a circuit board including a varistor, an electric part different from the varistor, and a heatsink for the electric part, the circuit board being supplied with a voltage from a commercial power source; a fan configured to cool the circuit board; and a housing configured to house the circuit board, wherein an opening is formed in the housing, wherein a cross-section shape of the heatsink is a U-shape, the varistor is positioned between a first wall portion and a second wall portion of the heatsink so that the heatsink straddles the varistor, and a position of the heatsink in a direction orthogonal to a longitudinal direction of the heatsink overlaps with a position of the opening in the direction so that an air is caused to flow between the first wall portion and the second wall portion through the opening by the fan.

Image forming apparatus including varistor

An image forming apparatus includes a developing device configured to develop an electrostatic latent image formed on an image bearing member, a rotatable developer accommodating container dismountably mounted in the image forming apparatus and configured to accommodate a developer, and a mounting portion including a receiving portion for receiving the developer discharged from the container and configured to mount the container. A cover is configured to open and close the mounting portion, and a rotation detecting portion is configured to detect rotation of the container mounted at the mounting portion. In addition, a display portion displays information, and a controller controls the display portion so that information on the rotation of the container is displayed at the display portion in a case that when the cover is open, with the rotation detecting portion detecting a predetermined amount of the rotation of the container.

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Tsukuba, Japan

Tooru Kuroki