Abstract: It is intended to provide a sheet stack ejecting apparatus, an image forming apparatus and a sheet stack processing apparatus applicable to ejection of a sheet stack while ejection errors are prevented by reducing disorderliness of ejected sheets of paper. A sheet ejecting apparatus 10 carries and ejects a sheet stack by holding the sheet stack with an ejecting roller pair 10 that consists of a top roller 21 and a bottom roller 22. The sheet ejecting apparatus 10 further includes a motor 24 for shifting the top roller 21 to switch between pressing state and separated state with respect to the ejecting roller pair 15 and a controller 20 for controlling the motor 24. The controller 20 works as ejection means that makes the ejecting roller pair 15 pressing state so as to eject a sheet stack and as separation means that makes the ejecting roller pair 15 separated state before a back end of a sheet stack escapes from nips of the ejecting roller pair 15 by using the motor 24.

Abstract: A sheet processing apparatus includes a stacker to stack plural sheets thereon, and an adhesive-applying device that applies adheasive to a portion of a side of the plural sheets stacked on the stacker to bind the plural sheets in such a way that the adhesive-applied portion of the side is smaller than the adhesive-non-applied portion of the side.

Abstract: A booklet binding apparatus including a clamp mechanism for clamping a sheet bundle, a coating member for applying adhesive to the spine surface of the sheet bundle clamped by the clamp mechanism, and an attaching and detaching mechanism for moving the coating member to and from the spine surface of the sheet bundle, wherein the attaching and detaching mechanism includes a separation mechanism which makes the coating member to be detached from the spine surface of the sheet bundle when an abnormal incident has occurred during application of the adhesive.

Abstract: A bookbinding apparatus for providing wrapping-binding of a booklet by bonding a cover sheet on the spine portion of a sheet bundle to wrap the sheet bundle with the cover sheet, wherein the sheet conveyance path of the bookbinding apparatus includes a notch forming device to form notches on the end to be coated with adhesive when the sheet is subjected to bookbinding process.

Abstract: A bookbinding system wherein additional printing is conducted on a cover sheet which has been printed thereon outside an image forming apparatus, the image forming apparatus is provided with an ejection-outlet through which the image forming apparatus accepts the cover sheet coming from a bookbinding apparatus and the cover sheet printed by a printing device of the image forming apparatus is fed out to the bookbinding apparatus for bookbinding.

Abstract: A post-processing apparatus capable of carrying out a plurality of post-processing operations, wherein for carrying out a post-processing operation, a tray for some other post-processing operations can also be utilized, without a special-purpose buffer tray being provided for each of the post-processing operations.

Abstract: By controlling the recording position of images on the cover sheet by the image recording section based on the thickness information of the bundle of sheets, image recording at the appropriate position has been made possible irrespective at the amount of trimming of the cover sheet that is trimmed to an appropriate length in accordance with the thickness of the bundle of sheets to be wrapped and bound with the cover sheet.

Abstract: There are provided bookbinding apparatuses that wrap a bundle of sheets with a cover and form back corners, and have a detecting unit for detecting a wave amount of a bundle of sheets. A type of such an apparatus includes a controller to control a time period to form back corners, based on a result of detection by the detecting unit. Another type of such an apparatus includes a controller to control a pressure applied to form back corners based on a result of detection by the detecting unit. Still another type of such an apparatus includes a controller to control a time period and pressure applied to form back corners, based on a result of detection by the detecting unit.

Abstract: A booklet stacking apparatus including a booklet receiving device receiving a booklet bound by a booklet binding apparatus in a booklet receiving position, a booklet stacking device capable of stacking plural booklets received by the booklet receiving device and including a transporting mechanism transporting the booklet, and a driving mechanism driving a booklet conveyance device receiving the booklet stacked on the booklet stacking device from the transporting mechanism, when a movable cart detachable from the booklet stacking apparatus and including the booklet conveyance device, is attached to the booklet-stacking apparatus, wherein the booklet receiving device includes, a receiving mechanism transporting the booklet received in the booklet receiving position to a predetermined position, and a delivery mechanism for transporting the booklet having been transported to the predetermined position, downward from the predetermined position, for handing the booklet over to the booklet stacking device, and for r

Abstract: A bookbinding apparatus for bookbinding such that a cover sheet forms a front and a back cover by bonding the cover sheet to a spine portion of a bundle of sheets, the bookbinding apparatus including a cover-sheet outfitting device which can be raised and lowered for holding and conveying a cover sheet to the cover sheet bonding position where the cover sheet is bonded to a bundle of sheets and a cover-sheet trimming device for trimming a cover sheet conveyed from the cover-sheet outfitting device, to a predetermined length prior to bonding the cover sheet to the bundle of sheets wherein the cover-sheet outfitting device is integrally formed with the cover-sheet trimming device.

Abstract: It is intended to provide a sheet stack ejecting apparatus, an image forming apparatus and a sheet stack processing apparatus applicable to ejection of a sheet stack while ejection errors are prevented by reducing disorderliness of ejected sheets of paper. A sheet ejecting apparatus 10 carries and ejects a sheet stack by holding the sheet stack with an ejecting roller pair 10 that consists of a top roller 21 and a bottom roller 22. The sheet ejecting apparatus 10 further includes a motor 24 for shifting the top roller 21 to switch between pressing state and separated state with respect to the ejecting roller pair 15 and a controller 20 for controlling the motor 24. The controller 20 works as ejection means that makes the ejecting roller pair 15 pressing state so as to eject a sheet stack and as separation means that makes the ejecting roller pair 15 separated state before a back end of a sheet stack escapes from nips of the ejecting roller pair 15 by using the motor 24.

Abstract: A sheet accommodating device including a sheet-laid tray including a processing tray and a carrying tray for laying a discharged sheet thereon, a first transporting device for moving the sheet laid on the sheet-laid tray toward an alignment reference position and a space of an aligning portion, a staple unit for stapling the aligned sheet, a second transporting device for moving the sheet(s) aligned at the alignment reference position selectively to first and second positions for sorting the sheets, a pushing member for pushing the sheet toward the processing tray for alignment, a guide member guiding a leading end of the sheet to the space of the aligning portion, a guide member moving device for moving the guide member from a sheet guide position to a sheet pushing position when the pushing member is escaped from the sheet, as well as a sheet processing system including a combination of the sheet accommodating device and an image forming apparatus.

Abstract: A sheet accommodating device comprising a sheet-laid tray including a processing tray and a carrying tray; a discharge tray; a sheet accommodating unit; first, second and third sheet transporting paths for leading the discharged sheet to the sheet-laid tray, the sheet accommodating unit and the discharge tray, respectively; a transporting and aligning device for moving the sheet discharged onto the sheet-laid tray toward an alignment reference position; a detector for detecting a vertical position of an upper surface of the sheet on the carrying tray; a tray position adjusting device for adjusting the vertical position of the carrying tray based on a result of detection by the detector ; controller for raising or lowering the carrying tray; and others, the second sheet transporting path extending through the escape position of the processing tray, as well as a sheet processing system including a combination of the sheet accommodating device and an image forming apparatus.