Patent ID: 9122228
Filing Date: 2015-09-01
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a main frame; and a holder holding a plurality of photosensitive drums arrayed in an array direction, and movable in an accommodating direction parallel to the array direction to be accommodated in the main frame, the holder comprising a pair of side plates each positioned at each axial end portion of each photosensitive drum, and each having an upstream end portion in the accommodating direction, and a pair of protruding portions each protruding outward in an axial direction from the upstream end portion of each side plate; wherein the main frame comprises: wherein the main frame includes a pair of particular side walls made from a metal, each positioning portion being provided at each particular side wall, the image forming apparatus further comprising an exposure unit positioned between the pair of particular side walls and configured to expose the plurality of photosensitive drums to light; and wherein each particular side wall includes a major portion supporting the exposure unit and an extension portion extending from the major portion toward the photosensitive drum, each positioning portion being provided at each extension portion.