An image forming apparatus includes, an image forming portion configured to form a toner image on a sheet using printing toner and apply powder adhesive on the sheet, a fixing portion configured to heat the toner image formed on the sheet and the powder adhesive applied on the sheet by the image forming portion and fix the toner image and the powder adhesive to the sheet, and a bonding portion configured to bond the sheet with the powder adhesive by reheating the sheet having been heated by the fixing portion. The bonding portion is arranged above the image forming portion.

The present application provides a tucker fold dispenser for folding and dispensing a sheet of material. The tucker fold dispenser may include an outer shell, a removable roller cassette positioned within the outer shell, a paper path therethrough, a number of loading rollers positioned about the paper path, a number of folding rollers positioned about the paper path, and a tucker bar mechanism positioned about the folding rollers.

A paper sheet folding device (sheet folding device) 160 includes a paper sheet folding unit 60 and a tray unit 110 that is provided on one side surface 161a of a device main body 161 and includes a lower discharge tray 121 on which a paper sheet S discharged through a lower discharge port 85 is loaded. The tray unit 110 is pivotable in an up-down direction about a pivotal shaft 111. A discharge drive mechanism 132 is disposed at a center portion of the tray unit 110 in a paper sheet width direction.

A folding machine folding a sheet P1 into a predetermined folding pattern to form a signature P3, a saddle stitching machine 3 arranged downstream of the folding machine to staple and fold the signature and a control unit 15 controlling the folding machine and saddle stitching machine are provided. The folding machine has parameters adjustable depending on a thickness of the sheet. The saddle stitching machine has parameters adjustable depending on a thickness of the signature P3, P4. The control unit sets the parameters of the folding machine based on the information about the thickness of the sheet and sets the parameters of the saddle stitching machine based on the information about the thickness of the signature calculated using the information about the thickness of the sheet and the information about the folding pattern of the folding machine.

A paper sheet S is intermittently transported by a transport mechanism 6 and each processing unit 7, 8 operates while the transport mechanism pauses the transport operation. An information acquisition unit 9 obtains paper information from the paper sheet. A control unit 10 stores the paper information of the paper sheet to be processed for each processing unit, updates the data of the memory in a manner such that the paper information of the paper sheet associated with the previous processing unit is associated with the next processing unit every time the transport mechanism transports, and configures the settings of each processing unit for the next processing operation based on the paper information every time the processing operation of the processing unit is completed.

A sheet processing apparatus includes an entry portion, a sheet conveyance path extending from the entry portion, a skew correction roller pair that contacts a leading edge of a sheet conveyed in a predetermined direction from the entry portion to correct skew of the sheet, and a receiving path. The skew correction roller pair conveys the skew-corrected sheet in a direction opposite the predetermined direction. The receiving path branches from the sheet conveyance path from the entry portion to the skew correction roller pair to receive the sheet conveyed in the direction opposite the predetermined direction.

A sheet processing apparatus includes a plurality of roller pairs, a single driving force supply source, and a drive transmission mechanism. The plurality of roller pairs include a first roller pair, a second roller pair, and a third roller pair. The single driving force supply source supplies a driving force to the first roller pair, the second roller pair, and the third roller pair. The drive transmission mechanism transmits the driving force to the first roller pair and the second roller pair in a manner such that a rotation direction of the first roller pair is not switched even in a case in which a direction of the driving force is switched such that a rotation direction of the second roller pair is switched when the first roller pair and the second roller pair are driven by the driving force from the driving force supply source.

The invention concerns a process and a system for the digital printing of printed publications, for the flexible production, on demand, of a single publication or small series of publications. The process of the invention is an automated process for the manufacture of at least one publication printed from at least one sheet, comprising the steps wherein: a plurality of pages (1, 4, 5, 8) of the publication is printed (A) on the sheet (10) that is moved through a series of stations wherein, subsequently, the sheet (10) is folded (C) in half perpendicular to the direction of travel; the folded sheet (10) is pivoted (D) by 90 with respect to the direction of travel, and the edges (18, 19) of the folded sheet are trimmed to obtain separate, superposed leaves (16, 17).

A paper folding machine comprising folding mechanisms (11, 15, 24) arranged at folding positions (A-C) on a transport path (1), respectively, guides (8, 19, 20, 28, 29) positioning a paper sheet (F) relative to the folding positions by engagement with at least one side edge of the paper sheet, stoppers (12, 15, 25) stopping and positioning the paper sheet at the folding positions by bringing a leading edge of the paper sheet into contact with the stoppers, a fold misalignment detection unit (50) detecting a fold misalignment amount of the paper sheet for each folding position, and a controller (42) controlling positions of the guides and stoppers. The controller calculates, for each folding position, an average fold misalignment amount, and adjusts the position of the guide and/or stopper associated with the corresponding folding position so as to correct fold misalignment corresponding to the average fold misalignment amount.

In a printing system capable of supplying a sheet of a job having undergone print processing by the printing unit of a printing apparatus to a post-processing unit capable of executing at least a specific type of post-processing among a plurality of types of post-processes, when the target job requires the specific type of post-processing, the printing apparatus is inhibited from executing print processing of the job without explicitly determining a sheet necessary for the print processing of the job by a user using a user interface unit. When the target job does not require the specific type of post-processing, the printing apparatus is permitted to execute print processing of the job without explicitly determining a sheet necessary for the print processing of the job by the user using the user interface unit.