Patent ID: 8620179
Filing Date: 2013-12-31
Classification: G03G

Abstract:
1. A tandem type photosensitive unit configured to be detachably mounted in an apparatus body of an image forming apparatus, comprising: a plurality of photosensitive drums arranged in parallel with one another; a first structure member having a side surface extending in an arrangement direction of the photosensitive drums as viewed from an axial direction of the photosensitive drums, the first structure member being configured to position and retain each of the plurality of photosensitive drums; and a second structure member having a side surface extending in the arrangement direction as viewed from the axial direction, the second structure member being configured to retain a plurality of developer cartridges provided correspondingly to the photosensitive drums respectively, wherein the first structure member is fixed to the second structure member on one side of the second structure member, and mounted with a clearance on the other side of the second structure member relative to the arrangement direction, wherein the clearance at other side of the second structure member is configured to account for a difference in the expansion or contraction of the first structure member relative to the second structure member.