A paper stacking device includes: a stacker on which paper is stacked; a paper ejector that ejects the paper toward the stacker; an aligning plate that is provided on a side of the paper stacked on the stacker, and aligns a side end of the paper; and a paper floating member that is provided in the aligning plate, and supports, from below, the side end of the paper ejected from the paper ejector, wherein the paper floating member is switched, in conjunction with a movement in upward and downward directions of the aligning plate, between: a paper floating position that advances from a side of the side end of the paper to an ejection route of the paper, and causes the paper ejected from the paper ejector to float from uppermost paper stacked on the stacker; and a retreat position that retreats from the ejection route.

A first unit includes a receiving portion that receives a medium to be processed, a drying unit that processes the medium received from the receiving portion, and an end stitching unit that processes the medium received from the receiving portion or the medium processed by the drying unit. The processing performed by the drying unit is processing of drying the medium, the drying unit is located vertically below the end stitching unit, and the drying unit and the end stitching unit have a portion overlapping when viewed in a vertical direction.

A first unit includes a receiving portion that receives a medium to be processed, a drying unit that processes the medium received from the receiving portion, and an end stitching unit that processes the medium received from the receiving portion or the medium processed by the drying unit. The processing performed by the drying unit is processing of drying the medium, the drying unit is located vertically below the end stitching unit, and the drying unit and the end stitching unit have a portion overlapping when viewed in a vertical direction.

A paper sheet storage apparatus (1) includes: a placement mount (10) on which bills (B) , i.e., an example of paper sheets, are placed; a leading-edge position restriction guide (20) that restricts the position of the leading edge portion of a bill (B) in an entering direction (D) in which the bill (B) advances when being transported onto the placement mount (10); and a sensor (30) that detects the presence/absence of an accumulation space (S) for bills (B) that is located above the placement mount (10). The sensor (30) detects the presence/absence of an accumulation space (S) by using detection light (L) emitted to a space between a first position (P1) that is located on an opposite side of the leading-edge position restriction guide (20) from the bills (B) on the placement mount (10) and a second position (P2) below the first position (P1) that is located on an opposite side of the bills (B) on the placement mount (10) from the leading-edge position restriction guide (20).

A document sheet conveying device includes a guide portion, a swinging shaft, a sheet member, and a biasing member. The guide portion guides a document sheet to the discharge tray. The swinging shaft is provided at an upstream end of the guide portion in a conveyance direction of the document sheet and swingably supports the guide portion with a width direction of the document sheet as an axis direction. One end of the sheet member is fixed to an upstream end of the discharge tray in the conveyance direction, and the other end is supported by the guide portion. As the guide portion is lifted up, the sheet member is drawn out from a part of the guide portion lower than the discharge outlet. The biasing member biases in a direction in which the sheet member is drawn into the guide portion.

A document sheet conveying device includes a guide portion, a swinging shaft, a sheet member, and a biasing member. The guide portion guides a document sheet to the discharge tray. The swinging shaft is provided at an upstream end of the guide portion in a conveyance direction of the document sheet and swingably supports the guide portion with a width direction of the document sheet as an axis direction. One end of the sheet member is fixed to an upstream end of the discharge tray in the conveyance direction, and the other end is supported by the guide portion. As the guide portion is lifted up, the sheet member is drawn out from a part of the guide portion lower than the discharge outlet. The biasing member biases in a direction in which the sheet member is drawn into the guide portion.

Two-dimensional material sheets are stacked in a stacking device. One of a printing machine and a coating machine has at least one stacking unit having a stacking space. Material sheets are conveyed, via the stacking space of the stacking unit, comprised by the stacking device, and are deposited into a stack on top of one another on a loading aid. For two different production runs, the stacks are formed on the loading aid with the four corners of their areas in mutually different relative orientations with respect to the loading aid, which is arranged, in each case, in the stacking space of the stacking unit and is larger-format compared with the material sheets to be deposited in each case. For the two production runs, in each case, one loading aid of the same format is positioned on different positions, as seen in projection in the horizontal, in the stacking space of the stacking unit.

Two-dimensional material sheets are stacked in a stacking device. One of a printing machine and a coating machine has at least one stacking unit having a stacking space. Material sheets are conveyed, via the stacking space of the stacking unit, comprised by the stacking device, and are deposited into a stack on top of one another on a loading aid. For two different production runs, the stacks are formed on the loading aid with the four corners of their areas in mutually different relative orientations with respect to the loading aid, which is arranged, in each case, in the stacking space of the stacking unit and is larger-format compared with the material sheets to be deposited in each case. For the two production runs, in each case, one loading aid of the same format is positioned on different positions, as seen in projection in the horizontal, in the stacking space of the stacking unit.

A sheet stacker includes a lifting mechanism, a tray, a conveyor, processing circuitry, an upper-limit sensor, a lift pause sensor, a lower-limit sensor, and a lowering pause sensor. The tray stacks multiple sheets. The conveyor above the tray conveys a sheet. The processing circuitry controls, via the lifting mechanism, a height position of the tray. The upper-limit sensor detects that an uppermost sheet of the sheets has reached an upper-limit position. The lift pause sensor detects that the uppermost sheet has reached a lift pause position lower than the upper-limit position. The lower-limit sensor detects that the tray has reached a lower-limit position. The lowering pause sensor detects that the tray has reached a lowering pause position higher than the lower-limit position. The upper-limit sensor, the lift pause sensor, the lower-limit sensor, and the lowering pause sensor are disposed in a space in which the tray is lifted and lowered.

A sheet stacker includes a lifting mechanism, a tray, a conveyor, processing circuitry, an upper-limit sensor, a lift pause sensor, a lower-limit sensor, and a lowering pause sensor. The tray stacks multiple sheets. The conveyor above the tray conveys a sheet. The processing circuitry controls, via the lifting mechanism, a height position of the tray. The upper-limit sensor detects that an uppermost sheet of the sheets has reached an upper-limit position. The lift pause sensor detects that the uppermost sheet has reached a lift pause position lower than the upper-limit position. The lower-limit sensor detects that the tray has reached a lower-limit position. The lowering pause sensor detects that the tray has reached a lowering pause position higher than the lower-limit position. The upper-limit sensor, the lift pause sensor, the lower-limit sensor, and the lowering pause sensor are disposed in a space in which the tray is lifted and lowered.