Patent ID: 8244167

Claim:
An image forming apparatus comprising: an image reading part configured to read an image of an original; an image forming part configured to form the image read by the image reading part on a sheet; a sheet discharge part configured to discharge the sheet on which the image is formed by the image forming part from front to rear of a main body of the image forming apparatus; and a sheet stack part configured to stack the sheet discharged by the sheet discharge part between the image reading part and the image forming part, wherein the image reading part has a front surface located on a downstream side in a discharge direction of the sheet relative to a front of the sheet stack part, the sheet stack part includes a first stacker surface provided on an upstream side in the discharge direction and including a surface having a slope extending upward in the discharge direction, a second stacker surface formed adjacent to the first stacker surface and sloping less steeply upward in the discharge direction than the slope of the first stacker surface, and a boundary between the first stacker surface and the second stacker surface located at a rear of the front surface of the image reading part, the image reading part slides in the discharge direction, and the image reading part is fixable at one of a plurality of positions in the discharge direction and the boundary between the first stacker surface and the second stacker surface is located behind the front surface of the image reading part when the image reading part is fixed at one of the plurality of positions, wherein the image reading part includes a first rail including a first lower surface, a first projection, and a groove in the first lower surface, a second rail including a second lower surface, and a second projection; and a body of the image forming apparatus includes a first supporter under the first rail, the first supporter including a first upper surface configured to engage the first lower surface, a first pin and a second pin configured to engage the groove of the first rail to limit a jolting of the image reading part, a scanner lock mechanism, and an operation button to operate the scanner lock mechanism, and a second supporter under the second rail, the second supporter including a second upper surface configured to engage the second lower surface, the second upper surface including a slot having a length substantially equal to a maximum sliding stroke of the image reading part, the slot being configured to engage a step screw of the second supporter.