Abstract: An image reading apparatus 300 comprises: the scanner device SD which reads information about a sheet P conveyed on a paper conveying route PP and information about a position, a form and a color of an image formed on the sheet P; a spectrophotometer CI which reads information about a color of an image formed on a sheet P conveyed on the paper conveying route PP; and a support base TR which incorporates the paper conveying route and a motor for conveying a sheet and can be pulled out from a main body together with the paper conveying route and the motor. The scanner device SD is not mounted on the support base TR but fixed to the main body of the image reading apparatus. The spectrophotometer CI is mounted on and fixed to the support base TR, and spaced from the paper transfer route PP by a predetermined distance.

Abstract: An image forming system includes an image forming device, a reading device and a hardware processor. The image forming device includes an image former that forms an image on a sheet. The reading device includes a line sensor and a lens unit. The line sensor reads the sheet with the image formed, thereby obtaining a read image. The lens unit includes a plurality of lenses and forms an image of the sheet on the line sensor. The hardware processor identifies a sheet region of the sheet in the read image, and corrects a magnification of each subregion in a main scanning direction of the sheet region according to a characteristic of a portion in the main scanning direction of the lens unit, the portion having being used in forming an image of the subregion on the line sensor.

Abstract: An image forming system includes an image forming apparatus which forms an image on a sheet, an image reading apparatus which reads the image formed on the sheet by the image forming apparatus, and a finisher which performs a post-printing process with the sheet. The image forming system further includes: a paper path which is provided in the image reading apparatus and through which the sheet is passed; and an electricity eliminator which is arranged in the upstream side of the finisher to eliminate static electricity of the sheet, wherein the electricity eliminator applies at least one of water and charge to front and back sides of the sheet.

Abstract: An image forming system includes an image forming apparatus that forms an image on a sheet, and a finisher that performs a post-printing process with the sheet. The image forming system comprises: a paper path through which the sheet is passed; an electricity eliminator that is arranged in the upstream side of the finisher to apply at least one agent of water and charge to the sheet; and a hardware processor that controls an application amount of the agent to be applied to the sheet by the electricity eliminator based on an amount of charge which is generated on the sheet when the sheet is passing through the paper path.

Abstract: An image reading apparatus 300 comprises: the scanner device SD which reads information about a sheet P conveyed on a paper conveying route PP and information about a position, a form and a color of an image formed on the sheet P; a spectrophotometer CI which reads information about a color of an image formed on a sheet P conveyed on the paper conveying route PP; and a support base TR which incorporates the paper conveying route and a motor for conveying a sheet and can be pulled out from a main body together with the paper conveying route and the motor. The scanner device SD is not mounted on the support base TR but fixed to the main body of the image reading apparatus. The spectrophotometer CI is mounted on and fixed to the support base TR, and spaced from the paper transfer route PP by a predetermined distance.

Abstract: Sheet pressing means (59) is provided that assists the formation of a bend in a sheet (S) and that guides the bend in the sheet (S) into the nip portion between a second roller (54) and a third roller (55). The sheet pressing means (59) is formed with a cylindrical sheet member (591) and a bar-shaped member (592) that is inserted into the cylindrical sheet member (591). The top portion of the sheet member (591) is attached to a base member (593), and thus the bar-shaped member (592) is supported by the sheet member (591) such that the longitudinal direction of the bar-shaped member (592) is held substantially in a horizontal state.

Abstract: Sheet pressing means (59) is provided that assists the formation of a bend in a sheet (S) and that guides the bend in the sheet (S) into the nip portion between a second roller (54) and a third roller (55). The sheet pressing means (59) is formed with a cylindrical sheet member (591) and a bar-shaped member (592) that is inserted into the cylindrical sheet member (591). The top portion of the sheet member (591) is attached to a base member (593), and thus the bar-shaped member (592) is supported by the sheet member (591) such that the longitudinal direction of the bar-shaped member (592) is held substantially in a horizontal state.

Abstract: A sheet-trimming apparatus having a blade-driving mechanism which presses a trimming blade against the sheet in a oblique direction to the sheet surface for trimming the sheet and a receiving-member driving mechanism which shifts a blade-receiving member receiving the trimming blade in the direction cross to the direction of the trimming blade.

Abstract: A post-processing apparatus having therein a stacker that stocks sheets temporarily and an ejection device that ejects a plurality of sheets stacked on the stacker from the stacker wherein the ejection device has an ejection claw that pushes up the plural sheets and a moving device that moves the ejection claw along the stacker, the ejection claw has a contact surface with which the aforesaid plural sheets are brought into contact when the plural sheets are pushed up, and the contact surface has plural protrusions protruding toward the plural sheets.

Abstract: A post-processing apparatus which has a trimming apparatus for trimming an edge of sheets to make booklets, wherein the trimming apparatus has an inserting means for insertion of sheets into trimming process section of the trimming apparatus, an edge sustaining member and an edge holding member for pinching the vicinity of the edge of the sheet during the trimming process and a shifting means to make the opening size variable for receiving sheets by changing the relative position between the edge holding member and the edge sustaining member and a controller for controlling the shifting means to change the opening size between the edge holding member and the edge sustaining member according to the number of the sheets to be trimmed.

Abstract: A finisher for finishing a booklet having a bundle of center-folded sheets, includes: a detector for detecting an end on a side of a folded portion of the booklet: a moving device for conveying the booklet by movement thereof; a controller for controlling the movement of the moving device; and a cutting device for cutting an edge on a side opposite to the end of the booklet, which has been conveyed by the moving device to a cutting position. The controller controls the movement of the moving device from a position where the detector has detected the end of the folded portion to the cutting position so that a size of a booklet after being cut is kept constant for each of sheet sizes.

Abstract: A post processing apparatus for processing image-recorded sheets, having: a transporting unit for transporting a booklet comprising a plurality of image-recorded sheets; a trimming section for trimming the booklet; and an oscillating mechanism for oscillating the transporting unit to change a transporting plane angle of the transporting unit; wherein, the oscillating mechanism oscillates the transporting unit to arrange a first transporting plane angle at the time when the transporting unit receives the booklet and a second transporting plane angle at the time when the transporting unit conveys the booklet to the trimming section different from each other.

Abstract: An objective of the present invention is to provide a post processing apparatus to load a center-folded sheet on a loading member and unload the paper sheets when a number of sheet reaches a predetermined number without damages with sheets. A Post-processing apparatus having a center folding member for making a center folded sheet by forming a folded line on a paper sheet, on which image is formed, a loading member for loading a member of center folded sheets by supporting a valley side of the center folded sheets, a supporting member for supporting a folded part or an adjacent folded part of a valley side of the center folded sheets loaded on the loading member, and a driving-means for moving the center folded sheets loaded on the loading member by moving the supporting member.

Abstract: To avoid displacement of the fold formed on a sheet and misalignment between sheets when a fold is formed on a bundle of sheets stacked one on top of another, a sheet folding apparatus, for forming a plurality of folds on the sheet on which an image is formed, includes a first folding section and a second folding section. The first folding section has a first folding roller, a second folding roller in contact with the first roller, and a first folding plate member for inserting the first fold of the sheet between the first and second folding rollers. The second folding section has the second folding roller, a third folding roller in contact with the second folding roller provided downstream from the first folding roller in the sheet feeding direction, and a second folding plate member for inserting the second fold of the sheet between the second and third folding rollers.

Abstract: There is described a paper conveying apparatus that deflects a conveying direction of a paper at substantially 90 degree relative to a conveyance direction of the paper. The apparatus includes: a first conveying section to convey the paper in a first conveyance direction; a second conveying section that includes a conveyance belt, including a conveying nail, to deflect the conveying direction of the paper and conveys the paper in a second conveyance direction, which is substantially orthogonal to a longitudinal direction of a leading edge of the paper; a stopper member for stopping and releasing a side edge portion of the paper in a width direction of the paper; and a driving section to drive both the conveyance belt and the stopper member. The driving section moves the conveying nail and/or the stopper member from an outside of a paper conveying area, to achieve a width truing operation.

Abstract: A sheet-trimming apparatus having a blade-driving mechanism which presses a trimming blade against the sheet in a oblique direction to the sheet surface for trimming the sheet and a receiving-member driving mechanism which shifts a blade-receiving member receiving the trimming blade in the direction cross to the direction of the trimming blade.

Abstract: A post-processing apparatus which has a trimming apparatus for trimming an edge of sheets to make booklets, wherein the trimming apparatus has an inserting means for insertion of sheets into trimming process section of the trimming apparatus, an edge sustaining member and an edge holding member for pinching the vicinity of the edge of the sheet during the trimming process and a shifting means to make the opening size variable for receiving sheets by changing the relative position between the edge holding member and the edge sustaining member and a controller for controlling the shifting means to change the opening size between the edge holding member and the edge sustaining member according to the number of the sheets to be trimmed.

Abstract: A finisher for finishing a booklet having a bundle of center-folded sheets, includes: a detector for detecting an end on a side of a folded portion of the booklet: a moving device for conveying the booklet by movement thereof; a controller for controlling the movement of the moving device; and a cutting device for cutting an edge on a side opposite to the end of the booklet, which has been conveyed by the moving device to a cutting position. The controller controls the movement of the moving device from a position where the detector has detected the end of the folded portion to the cutting position so that a size of a booklet after being cut is kept constant for each of sheet sizes.

Abstract: An image forming apparatus integrally having a sheet post-processing apparatus is disclosed. The apparatus includes a center folding unit for creasing, a stack unit which has an angular shape, and a pushing unit which pushes up the paper sheets stacked on said stack means. The apparatus also includes a first convey unit for conveying a creased paper sheet or the like and stacking paper sheets or the like on the stack unit. The apparatus further includes a convey assistance unit provided near a top portion the stack unit and a saddle stitching unit for forming a predetermined number of paper sheets or the like stacked into a booklet. In addition, the apparatus also includes a second convey unit for conveying the saddle-stitched booklet in a two-folded state, a cutting unit for performing a cutting process, and a discharging unit for discharging the two-folded booklet outside the apparatus.

Abstract: A post-processing apparatus post-processing a booklet having a bundle of center-folded sheets. The apparatus comprises a trimming apparatus trimming an edge portion of the booklet, a skew-correcting device correcting a skew of the booklet, a pressing device flattening the booklet by pressing, and a transferring device conveying the booklet into a trimming process opening section of the trimming apparatus by transferring the pressing device. And the booklet the skew of which is corrected by the skew-correcting device is pressed by the pressing device and the booklet is conveyed into the trimming process opening section by the transferring device while the booklet is pressed by the pressing device.