Development device, process cartridge, and image forming apparatus

An image forming apparatus comprising:

• a main assembly including;
• a first electrical contact, a second electrical contact, and a third electrical contact;
• a photosensitive drum rotatable about a rotation axis extending in a rotation axis direction;
• a developing roller;
• a first conductive member;
• a second conductive member;
• a third conductive member;
• a movable member configured to move the photosensitive drum, the developing roller, the first conductive member, the second conductive member, and the third conductive member, wherein the movable member is movable between (i) an inside position in which the movable member is inserted into the main assembly so that the photosensitive drum, the developing roller, the first conductive member, the second conductive member, and the third conductive member are inside the main assembly and (ii) a pull-out position in which the movable member is pulled out from the main assembly,
• wherein, in a state where the movable member is in the inside position, the first conductive member contacts with the first electrical contact, the second conductive member contacts with the second electrical contact, and the third conductive member contacts with the third electrical contact,
• wherein the first conductive member, the second conductive member, and the third conductive member are disposed at different positions with respect to the rotation axis direction,
• wherein an insert direction of the movable member from the pull-out position to the inside position intersects with a vertical direction, and the first conductive member, the second conductive member, and the third conductive member are disposed at different positions with respect to the insert direction.