Image forming apparatus

Abstract

The present invention provides an image forming apparatus in which the drum cartridge is easily mounted to the main body housing. [Solution] The image forming apparatus comprises a main housing 2, a drum cartridge, and a developing cartridge. The main housing 2 has a slot 22B extending in a first direction toward the interior of the main housing 2 from an opening 22A. The drum cartridge and the developing cartridge can be mounted in the slot 22B through the opening in the first direction. The main housing 2 has a drum guide groove 24 extending in the first direction for guiding the drum cartridge. The drum cartridge has a drum projection extending in the first direction that fits into the drum guide groove. The width of the drum guide groove 24 in the second direction narrows as it moves toward the interior of the main housing 2 from the opening 22A. The width of the drum projection in the second direction narrows as it moves toward the interior of the main housing 2 from the opening 22A when the drum cartridge is mounted in the slot 22B.

Claims

[Claim 1] A main body housing having an opening, a main body housing having a slot extending in a first direction toward the interior of the main body housing, and a main body housing including the inner surface located at the innermost part of the slot, A drum cartridge having a photosensitive drum rotatable about a first axis extending in the first direction, the drum cartridge being removablely insertable into the slot through the opening in the first direction, An image forming apparatus comprising: a developing cartridge having a developing roller rotatable about a second axis extending in the first direction, and a developing cartridge that is removablely insertable into the slot through the opening in the first direction, With the drum cartridge and the developing cartridge mounted in the main housing, the photosensitive drum and the developing roller are arranged side by side in a second direction perpendicular to the first direction. The drum cartridge has a first drum side wall and a second drum side wall that faces the first drum side wall in the first direction when the drum cartridge is mounted in the slot, and is spaced apart from the first drum side wall in the first direction when the drum cartridge is mounted in the slot, and when the drum cartridge is mounted in the slot, the second drum side wall is further from the opening than the first drum side wall. The main housing has a drum guide groove extending in the first direction for guiding the movement of the drum cartridge, the drum guide groove has a first inclined surface, the first inclined surface is inclined in the second direction toward away from the developing roller as it moves toward the interior of the main housing, The image forming apparatus is characterized in that the drum cartridge has a second inclined surface, and when the drum cartridge is mounted in the slot, the second inclined surface is inclined in a direction away from the developing roller in the second direction as it moves toward the interior of the main housing.

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