A post-processing apparatus (1) includes a first conveyance path (41), a first processing part (55), a second conveyance path (95) and a merging conveyance path (97), and the first processing part (55) includes a conveying rollers pair (80) including a first roller (81) and a second roller (83) conveying the sheet along a first direction; a first folding rollers pair (84) including the first roller (81) and a third roller (85) forming a first nip, conveying the sheet along a second direction and performing a folding processing along a first fold line; a second folding rollers pair (86) including the third roller (85) and a fourth roller (87) forming a second nip, conveying the sheet along a third direction and performing a folding processing along a second fold line; a first folding guide (89) movable to the first nip; and a second folding guide (91) movable to the second nip.

A post-processing apparatus (1) includes a first conveyance path (41), a first processing part (55), a second conveyance path (95) and a merging conveyance path (97), and the first processing part (55) includes a conveying rollers pair (80) including a first roller (81) and a second roller (83) conveying the sheet along a first direction; a first folding rollers pair (84) including the first roller (81) and a third roller (85) forming a first nip, conveying the sheet along a second direction and performing a folding processing along a first fold line; a second folding rollers pair (86) including the third roller (85) and a fourth roller (87) forming a second nip, conveying the sheet along a third direction and performing a folding processing along a second fold line; a first folding guide (89) movable to the first nip; and a second folding guide (91) movable to the second nip.

The aligning device receives a sheet conveyed in a sheet conveyance direction in a stackable manner and aligns a position of the sheet in the sheet conveyance direction. The moving mechanism moves the sheet aligned by the aligning device in the sheet conveyance direction together with the aligning device. The controller selectively executes a first mode in which first post-processing is performed on the sheet and then second post-processing is performed on the sheet and a second mode in which the second post-processing is performed on the sheet without performing the first post-processing on the sheet. The controller, in response to a selection of the first mode or the second mode, causes the moving mechanism to adjust a position of the aligning device in the sheet conveyance direction before the aligning device receives the sheet as a target of the first post-processing or the second post-processing, respectively.

A folding device includes a conveying path, a placement portion, a through portion, a first folding member, a second folding member, a rotational driving unit, a rotational position detecting mechanism, a signal receiving unit, and a rotational drive control unit. The rotational drive control unit, when the signal receiving unit receives a signal, determines whether the first folding member is in a state of moving from an initial position to a protruded position or in a state of moving to the opposite direction, and, in a case of being determined to be in the state of moving from the initial position to the protruded position, controls the rotational driving unit to reverse the direction of rotational drive, and in a case of being determined to be in the state of moving to the opposite direction, controls the rotational driving unit to maintain the direction of rotational drive.

A folding device includes a conveying path, a placement portion, a through portion, a first folding member, a second folding member, a rotational driving unit, a rotational position detecting mechanism, a signal receiving unit, and a rotational drive control unit. The rotational drive control unit, when the signal receiving unit receives a signal, determines whether the first folding member is in a state of moving from an initial position to a protruded position or in a state of moving to the opposite direction, and, in a case of being determined to be in the state of moving from the initial position to the protruded position, controls the rotational driving unit to reverse the direction of rotational drive, and in a case of being determined to be in the state of moving to the opposite direction, controls the rotational driving unit to maintain the direction of rotational drive.

An image forming apparatus includes an image forming unit, an input unit configured to receive input of folding unit information specifying either one of a first sheet folding unit and a second sheet folding unit, and a control unit configured to selectively perform a first mode and a second mode based on the folding unit information, the first mode being a mode in which the image forming unit forms the image on the sheet such that an orientation of the image becomes a first direction, the second mode being a mode in which the image forming unit forms the image on the sheet such that the orientation of the image becomes a second direction inverted from the first direction.

An apparatus for treating a stack of sheets of sheet material includes a means for moving the stack of sheets of sheet material towards a first and second fold roller means. The first and second fold roller means are arranged to assist with folding of the stack of sheets of sheet material. The apparatus also includes a first and a second clamping jaw defining a gap. The first and second clamping jaws are arranged to be movable relative to each other to increase and decrease the gap for selective application of a clamping force to the stack of sheets of sheet material having passed between the first and second fold roller means. The first and second fold roller means are mounted in a manner allowing for an increase and decrease in separation and thus between a stack-guiding configuration and a stack compressing configuration.

A cutting apparatus includes a blade configured to cut a sheet that is conveyed along a sheet conveyance path, a scrap path through which scrap generated when the sheet is cut by the blade passes, a guide member configured to guide the sheet conveyed, and a blowing unit configured to blow air such that the air crosses the sheet conveyance path from a side opposite the scrap path with the sheet conveyance path therebetween, wherein the blowing unit blows air such that the air flows along the guide member positioned at a second position at which the scrap is allowed to enter the scrap path.

A printing apparatus includes a printing unit that prints images on sheets, a sheet processing unit that executes bookbinding processing on sheets on which images have been printed by the printing unit, a stack control unit that stacks, in a stacking unit, bookbinding products on which bookbinding processing has been executed by the sheet processing unit, a setting unit that sets whether or not to activate a stacking limit of bookbinding products to be stacked on the stacking unit by the stack limiting unit, and a control unit that performs control so as to stop stacking in the stacking unit by the stack control unit in accordance with the stacking limit in the case where the stacking limit of bookbinding products has been set to activated by the setting unit.

A printer, which is an example of a liquid ejecting apparatus, includes a movable body including a head for ejecting a liquid or a cap performing maintenance of the head. Further, the printer includes a pair of rack and pinion mechanisms including a rack and a drive gear to move the movable body in a first direction in which the rack extends; and a switching mechanism provided for each of the rack and pinion mechanisms and switching presence and absence of meshing between the rack and the drive gear when the movable body is at an exchange position.