Patent ID: 9599957
Date: 2017-03-21
CPC Classifications: G03G

Claim:
1. An image forming apparatus which forms images on a recording medium, the image forming apparatus comprising: a supporting member including attaching portions to which a plurality of cartridges are attached and configured to support the plurality of cartridges and to be movable between an inside position which is inside an apparatus main body of the image forming apparatus and an outside position which is outside of the apparatus main body, in which the plurality of cartridges are supported arrayed in an extracting direction of extracting the supporting member from the inside position to the outside position, with the plurality of cartridges being detachably attachable at the outside position; an exposure device exposing a plurality of photosensitive drums each included in corresponding one of the plurality of cartridges, wherein the cartridges are so arranged such that the exposure device exposing the photosensitive drums along an exposing direction perpendicular to a moving direction of the cartridges; wherein the plurality of cartridges includes a first cartridge, a second cartridge, and a third cartridge; wherein a width of the first cartridge supported by the supporting member is wider than a width of the second cartridge and a width of the third cartridge supported by the supporting member, in an orthogonal direction orthogonal to the extracting direction and to a longitudinal direction of the cartridges, and wherein when the first cartridge, the second cartridge, and the third cartridge, being attached to the attaching portions and arranged in this order from a downstream side toward an upstream side of the extracting direction are viewed from the exposing direction, the amount of overlapping between the first cartridge and the second cartridge is greater than the amount of overlapping between the second cartridge and the third cartridge.