Abstract: In an embodiment, a booklet conveying device includes: a pair of conveying units; a positioning unit; a pressing unit; and a conveying-force changing unit. The pair of conveying units convey a booklet made of a stack of folded sheets, and change a distance therebetween. The positioning unit positions the booklet by making a leading-end portion of the booklet abut thereto. The pressing unit presses the booklet positioned by the positioning unit onto one of the conveying units in order to fix. The conveying-force changing unit changes the conveying force exerted by the conveying units.

Abstract: The above perforation device is equipped with a plurality of punches to punch holes on a sheet by a reciprocation motion; a holding board to hold the above punches in a line in the width direction of a sheet; a plurality of dies being arranged opposing to the above plurality of punches; two cranks being arranged at a drive shaft, rotate together with the above drive shaft, and being arranged with phases of an angle being displaced with each other in the shaft rotating direction; and two connection poles connecting with the above two cranks and the above holding board, wherein a differential perforation is carried out in such a manner that rotation of the above two cranks reciprocates the above punches, and during perforating cut-outs on a sheet, the above holding board reciprocates with phases at both ends being displaced, and the above plurality of punches carry out perforation of cut-outs with time difference from a punch at either end of the both ends to a punch at the other end successively.

Abstract: A bookbinding apparatus for producing a booklet by coating an adhesive onto a back side of a bundle of sheets and by pasting a book cover onto the back side of the bundle of sheets, comprises: an oblique cutout portion forming section to form a cutout on an edge of each sheet of the bundle of sheets in such a way that an oblique cutout portion is formed along the width of the back side of the bundle of sheets; a sheet bundle accommodating section to accommodate the bundle of sheets on which the oblique cutout portion is formed; a coating section to coat an adhesive on the back side of the bundle of sheets accommodated in the sheet bundle accommodating section; and a bookbinding section to paste a book cover on the adhesive-coated back side of the bundle of sheets so as to produce the booklet.

Abstract: A perforation apparatus, having: a perforation device to perforate a sheet by a punch; a pair of aligning members to align the sheet in a sheet width direction; and a contact member to contact with an trailing edge of the sheet, capable of being inserted and retracted with respect to a conveyance path of the sheet, disposed at an upstream side of the punch in the sheet conveyance direction; wherein the sheet is moved and aligned to a sheet aligning position while being grasped by the aligning members, the aligning device is retracted from the sheet aligning position after the aligning operation is completed, subsequently the contact member pushes the trailing edge of the sheet and conveys the sheet to a predetermined position, then the sheet is perforated by the perforation device.

Abstract: In an embodiment, a booklet conveying device includes: a pair of conveying units; a positioning unit; a pressing unit; and a conveying-force changing unit. The pair of conveying units convey a booklet made of a stack of folded sheets, and change a distance therebetween. The positioning unit positions the booklet by making a leading-end portion of the booklet abut thereto. The pressing unit presses the booklet positioned by the positioning unit onto one of the conveying units in order to fix. The conveying-force changing unit changes the conveying force exerted by the conveying units.

Abstract: A skew correction device for aligning a booklet that is a folded bundle of sheets on a conveying path includes a first member against which a leading end of the booklet abuts in a conveying direction; a second member configured to push a trailing end of the booklet in the conveying direction so that the leading end of the booklet abuts against the first member; and a deflection generating member configured to deflect the booklet downward when the trailing end is pushed.

Abstract: A skew correction device includes: a conveying path through which a booklet formed by folding a sheet bundle is conveyed in a conveying direction; a positioning unit on which a leading-end portion of the booklet in the conveying direction is to abut, the positioning unit being arranged to be able to protrude into and retreat from the conveying path; an abutting unit that pushes a trailing-end portion of the booklet in the conveying direction, thereby moving the booklet toward the positioning unit and causing the leading-end portion of the booklet to abut on the positioning unit; and a pushing force changing unit that changes a pushing force applied by the abutting unit to the booklet to push the booklet against the positioning unit based on a pushing amount of the abutting unit to the booklet.

Abstract: A sheet processing apparatus includes a conveying unit that conveys a booklet formed by folding a sheet bundle; a processing unit that performs a predetermined process on the booklet; a booklet holding unit that includes first and second holding members to hold the booklet and varies a gap distance between the first and second holding members depending on a state of processing the booklet while the sheet processing unit is performing the process on the booklet; and a pressing unit that presses and fixes the booklet while the processing unit is processing the booklet

Abstract: A bookbinding apparatus, having a sheet bundle storing device to store a sheet bundle, a grasping device to grasp the sheet bundle stored in the sheet bundle storing device, a square spine forming device to form a square spine, wherein a pair of forming members bend a coversheet bonded onto a back section of the sheet bundle grasped by the grasping device, a pressure force controlling device to vary a pressure force of the pair of forming members to press a bending section of the coversheet in accordance with bookbinding conditions.

Abstract: The book binding device includes a section for forming a cut in the end side of a conveyed sheet, a control section for controlling the section for forming a cut, and a selection section for selecting each sheet for the presence/absence of a cut to be formed by the section for forming a cut, wherein the control section controls the formation of a cut by the section for forming a cut based on the presence/absence of the formation of a cut selected by the selection section, and then the mixture of sheets in which cuts are formed and sheets in which cuts are not formed are bundled and bound to complete a booklet.

Abstract: The above perforation device is equipped with a plurality of punches to punch holes on a sheet by a reciprocation motion; a holding board to hold the above punches in a line in the width direction of a sheet; a plurality of dies being arranged opposing to the above plurality of punches; two cranks being arranged at a drive shaft, rotate together with the above drive shaft, and being arranged with phases of an angle being displaced with each other in the shaft rotating direction; and two connection poles connecting with the above two cranks and the above holding board, wherein a differential perforation is carried out in such a manner that rotation of the above two cranks reciprocates the above punches, and during perforating cut-outs on a sheet, the above holding board reciprocates with phases at both ends being displaced, and the above plurality of punches carry out perforation of cut-outs with time difference from a punch at either end of the both ends to a punch at the other end successively.

Abstract: A perforation apparatus, having: a perforation device to perforate a sheet by a punch; a pair of aligning members to align the sheet in a sheet width direction; and a contact member to contact with an trailing edge of the sheet, capable of being inserted and retracted with respect to a conveyance path of the sheet, disposed at an upstream side of the punch in the sheet conveyance direction; wherein the sheet is moved and aligned to a sheet aligning position while being grasped by the aligning members, the aligning device is retracted from the sheet aligning position after the aligning operation is completed, subsequently the contact member pushes the trailing edge of the sheet and conveys the sheet to a predetermined position, then the sheet is perforated by the perforation device.

Abstract: A bookbinding system to produce booklets, including: an image forming section; a first conveyance route of the sheet carrying the image; a sheet storing section which stores sheets on which no image is going to be formed; a second conveyance route to connect the sheet storing section and the first conveyance route; a notching section which forms notches on edges of the sheets; and a bookbinding section which accumulates the sheets to form a sheet bundle, and adhere a cover sheet to the sheet bundle to become a booklet, wherein the image forming section is placed upstream of a merging point of the first and second conveyance routes, with respect to a sheet conveyance direction of the first conveyance route, wherein the notching section is placed downstream of the merging point; and the bookbinding section is placed downstream of the notching section, with respect to the sheet conveyance direction.

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 control section of a notch forming apparatus shifts a position of a notch in the first direction for every single sheet or for every plural sheets. When number of the sheets on which the notch is formed reaches at a criterion number, the position of the notch is shifted to a second direction which is an opposite direction in respect to the first direction.

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: A punching device to form a notch on a sheet by cutting away a portion of a sheet edge, having a punch having a double projection section at an anterior end thereof, wherein the portion of the sheet edge is cut away without apexes of the double projection section coming in contact with the sheet.

Abstract: A sheet feed device of this invention includes a sheet feed tray, a sheet feed unit which feeds a sheet placed on the sheet feed tray, a detection sensor which detects the presence/absence of a sheet on the sheet feed tray, and a sensor mounting member which mounts the detection sensor on the sheet feed tray. The sensor mounting member can mount the detection sensor on the sheet feed tray such that the angle of the sensor can be adjusted with respect to the tray.

Abstract: A bookbinding system wherein, when 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 bookbinding system to produce booklets, including: an image forming section; a first conveyance route of the sheet carrying the image; a sheet storing section which stores sheets on which no image is going to be formed; a second conveyance route to connect the sheet storing section and the first conveyance route; a notching section which forms notches on edges of the sheets; and a bookbinding section which accumulates the sheets to form a sheet bundle, and adhere a cover sheet to the sheet bundle to become a booklet, wherein the image forming section is placed upstream of a merging point of the first and second conveyance routes, with respect to a sheet conveyance direction of the first conveyance route, wherein the notching section is placed downstream of the merging point; and the bookbinding section is placed downstream of the notching section, with respect to the sheet conveyance direction.