Patent ID: 8528896

Claim:
An image forming apparatus, comprising: an image forming unit, which is configured to form an image on a recording sheet having a width and a length; a pair of frames, which are arranged to face each other and hold the image forming unit interposed in there-between; and a sheet cassette, which is configured to store the recording sheet therein and to be movable between an operable position, in which the sheet cassette is settled in between the pair of frames, and a removed position, which is out of the operable position, wherein the sheet cassette is formed to have a pair of lateral walls on widthwise sides of the sheet cassette along a direction of width of the recording sheet, a first engagement portion, which is arranged on a widthwise outer side of one of the lateral walls with clearance being maintained from an outer surface of the one of the lateral walls, and a first joint portion, which connects the first engagement portion and the one of the lateral walls; wherein space enclosed by the first engagement portion, the first joint portion, and the outer surface of the one of the lateral walls is exposed toward an installation side, from which the sheet cassette is installed in the image forming apparatus; wherein the pair of frames is formed to have a second engagement portion, which is arranged on an inner surface of one of the frames along the direction of width of the recording sheet, and a second joint portion, which connects the second engagement portion and the inner surface of the one of the frames; wherein space enclosed by the second engagement portion, the second joint portion, and the inner surface of the one of the frames is exposed toward a side opposite from the installation side; and wherein, when the sheet cassette is in the operable position, the first engagement portion is placed in an engagement position on widthwise outer side with respect to the second engagement portion to be engaged with the second engagement portion.