An image forming apparatus includes an image forming portion, a fixing portion configured to heat and press the sheet conveyed from the image forming portion while nipping and conveying the sheet by a first nip portion to fix toner image to the sheet, a folding portion configured to fold the sheet, and a bonding portion configured to heat and press the sheet folded by the folding portion while nipping and conveying the sheet by a second nip portion to bond the sheet by powder adhesive. A peak value of pressure that the second rotary member pair applies to the sheet in the second nip portion is greater than a peak value of pressure that the first rotary member pair applies to the sheet in the first nip portion.

In an example, a media catcher may include a first frame member and a second frame member spaced away from the first frame member along a lateral direction, thereby defining a catcher width of the media catcher. Additionally, the media catcher may also include a device interface disposed at a top end of the first frame member or the second frame member. The device interface may attach the media catcher to an imaging device. The media catcher may further include a catch panel extending between the first frame member and the second frame member to catch and support media.

A sheet processing apparatus sandwiches a sheet media in a two-ply sheet in which two sheets are overlaid and bonded together at a portion of the two-ply sheet. The sheet processing apparatus includes a fixing device, a tray, and a roller. The fixing device applies heat and pressure to the two-ply sheet. The tray is disposed downstream from the fixing device in a conveyance direction of the two-ply sheet, to stack the two-ply sheet. The roller conveys the two-ply sheet vertically downward toward the tray after the two-ply sheet passes through the fixing device.

This paper sheet processing device is provided with a casing (10), an intake unit (20), an identification unit (60), a second transportation unit (50) for transporting sheets of paper substantially horizontally, a plurality of collection units (80, 90) for collecting the sheets of paper transported by the second transportation unit (50), and vaned rollers (81, 91) provided correspondingly with respect to the collection units (80, 90). With regards to any two of the collection units (80, 90) that are adjacent to one another, the direction of rotation of the vaned roller (81) corresponding to one of the collection units (80, 90) and the direction of rotation of the vaned roller (91) corresponding to the other collection unit (80, 90) are opposite each other.

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 sheet processing device includes: an adhesive-binding unit that applies an adhesive onto sheets stored in a stacker section one by one and adhesive-binds the sheets; a staple-binding unit that staple-binds sheets accumulated in the stacker section by means of staples; and a folding mechanism section having a folding roller that folds the adhesive-bound or staple-bound sheet bundle in two at a binding position of the adhesive-binding unit or staple-binding unit and a folding blade that pushes the bound sheet bundle into the folding roller. A folding speed of the folding mechanism section for the sheet bundle bound by the adhesive-binding unit is lower than a folding speed for the sheet bundle bound by the staple-binding unit; thereby, productivity of the folding processing is improved and occurrence of the peeling-off or break during the folding processing is reduced.

A stacking device for flat objects standing upright stacks the objects to form a stack which increases in a stacking direction. The stacking device includes at least one stacking point at which the objects are respectively added to the stack. The stacking device also includes at least one stack holder drive with which at least one stack holder receiving the stack can be moved in the stacking direction relative to the stacking point. A stack holder for a stack of flat objects standing upright and a sorting system for sorting flat objects including a plurality of stacking devices, are also provided.

Provided is a sheet processing apparatus, including: a regulation portion configured to contact with an end edge of a sheet to be conveyed and to regulate a position of the sheet; a position adjustment portion configured to perform position adjustment on a sheet in a direction along an end edge of the sheet of which the end edge is in contact with the regulation portion; a folding portion configured to perform folding processing on a sheet which has been regulated by the regulation portion; and a control portion configured to execute: a first mode of causing the folding portion to perform the folding processing on a sheet which has been regulated by the regulation portion, without causing the position adjustment portion to perform the position adjustment on the sheet; and a second mode of causing the position adjustment portion to perform the position adjustment with respect to the regulated sheet.

A sheet folding apparatus includes a retract path that is positioned on the upstream side of a stacker section for collecting sheets and that branches off from a transport path to enable a sheet carried in the stacker section to be transported in a direction opposite to a carry-in direction, an adhesion unit that is positioned in a junction position of the transport path and the retract path to bond sheets by applying an adhesive, a staple binding unit that binds sheets collected in the stacker section with a staple, and a folding processing section that folds sheets bound with the unit. The retract path is a path for retracting an application position of the preceding sheet with the adhesive applied, in carrying a next sheet in the stacker section, and the staple binding unit is disposed in the stacker section between the adhesion unit and the folding processing section.

A sheet processing apparatus that can suppress a reduction in a quality of a finish of a fold part of a stack of center-folded sheets without losing an ease of center-folding. The sheet processing apparatus comprises a creasing unit for forming a folding stripe on a sheet so as to facilitate folding the sheet, and an acquisition unit for acquiring information related to a thickness of the sheet. One or more sheets to be provided with folding stripes are determined, from among a plurality of sheets to be folded, according to the information related to the thickness of the sheets, and each of the determined one or more sheets are provided with a folding stripe.