| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sheet stacking device that can suppress the generation of an abnormal sound in conveying a sheet without deteriorating sheet conveyance performance, and to provide a sheet conveyance device and an image forming apparatus. <P>SOLUTION: In the sheet stacking device, a sheet cassette 19 stacks and stores the sheets, a separating unit 22 separates the sheets one by one opposite a feeding roller for feeding out the sheets from the sheet cassette 19, and a rib 26 is formed on a rear surface 27a of a bottom plate 27 of the sheet cassette 19 where an outer portion corresponding to a rear surface of the separating unit 22 is formed to be enclosed by a frame at least one side of which is composed of the rib 26. In the frame, a pressing member 30 composed of a material higher in rigidity and larger in specific gravity than the rib 26 is press-fitted into a frame whose at least one side is formed of the rib 26, and the rib 26 is pressed by the pressing member 30. <P>COPYRIGHT: (C)2012,JPO&INPIT |
