Patent ID: 8190050

Claim:
An image forming apparatus comprising: a main body provided with a first electrical connecting part configured as a terminal provided on an inner side surface of the main body and is movably forward and backward from the inner side surface; a removable unit removably mounted in the main body, the removable unit being provided with a second electrical connecting part configured as a contact provided at a side portion of the removable unit, the removable unit including a concave part having two side surfaces, a first guide portion and a second guide portion defined by the side surfaces, wherein one side surface of the concave part, which is positioned closer to the contact than the other side surface, gradually moves away from the side portion mounted with the contact of the removable unit as it goes from an inlet of the first guide portion to an inlet of the second guide portion, and is formed parallel to the side portion of the removable unit in the second guide portion; a guide device to guide the removable unit in an insertion direction and a lateral direction in which the removable unit is guided towards the inner side surface when the removable unit is guided in the lateral direction so that the second electrical connecting part of the removable unit is connected to the first electrical connecting part of the main body, the first electrical connecting part protruding from the inner side surface in a direction opposite to the lateral direction.