In accordance with an embodiment, a sheet processing apparatus comprises a first tray, a second tray, a third tray, a lower supporting plate, a drive section and a control device. The second tray is located at the lower part of the first tray. The third tray is located at a downstream side with respect to the second tray in a sheet conveyance direction. The lower supporting plate can support the sheet from the lower part. The drive section drives the lower supporting plate. The control device controls the drive section to arrange the lower supporting plate at the downstream side with respect to a conveyance starting point of the sheet in the sheet conveyance direction in a case of skipping the first tray and the second tray to convey the sheet to the third tray.

A paper sheet handling apparatus includes a housing, a first unit, a second unit, and a joint module. At least one of the first and second units is a slidable paper sheet module slidably disposed at a rail on the housing and includes a module channel. The joint module is disposed in the housing and includes a main body, a moving shaft, a joint conveying channel, and a limiting member. The main body is located at a side of the rail. The moving shaft is slidably connected to the main body and configured to slide relative to the rail. The joint conveying channel is connected to the moving shaft. The limiting member is disposed on the main body and configured to limit the moving shaft to move between an outer point and an inner point. The outer point is located closer to the rail than the inner point.

A paper sheet handling apparatus includes a housing, a first unit, a second unit, and a joint module. At least one of the first and second units is a slidable paper sheet module slidably disposed at a rail on the housing and includes a module channel. The joint module is disposed in the housing and includes a main body, a moving shaft, a joint conveying channel, and a limiting member. The main body is located at a side of the rail. The moving shaft is slidably connected to the main body and configured to slide relative to the rail. The joint conveying channel is connected to the moving shaft. The limiting member is disposed on the main body and configured to limit the moving shaft to move between an outer point and an inner point. The outer point is located closer to the rail than the inner point.

A sheet ejection device includes an ejection roller pair, a stacking tray, a protrusion member and a movement mechanism. The protrusion member is supported to be able to reciprocate between a protrusion position and a retraction position in a predetermined movement direction. The movement mechanism includes: a rotation shaft; a holding member; and a rack and pinion mechanism which includes a pinion gear and a rack gear. In at least a part of the rack gear in the movement direction, a narrow width region is provided which includes a narrow width gear and a cutout portion. In the narrow width region, the pinion gear is slidable between a meshing position and a release position, and in a state where the pinion gear has slid to the release position, the protrusion member can be relatively moved with respect to the pinion gear in the movement direction.

The sheet discharge device includes a sheet discharge port, a discharge member, a sheet discharge tray, a support member, a drive mechanism, and a controller. The discharge member conveys sheets in a discharge direction. On the sheet discharge tray, the sheets discharged from the sheet discharge port are to be stacked. The support member is movable by the drive mechanism between a projective position in which the support member is projected to above the sheet discharge tray so as to support the sheets, and a retractive position in which the support member has retracted from the projective position to an upstream side of the sheet discharge port. The controller is enabled to adjust at least one of a projective length of the support member in its projective position and a shift timing from the projective position to the retractive position in response to characteristics of the sheets.