Abstract: An apparatus includes a differential to receive a primary driving force, and provide a first driving force and a second driving force. A first pick wheel is to transfer the first driving force to a sheet. A second pick wheel is to transfer the second driving force to the sheet. The differential is to balance the first driving force and the second driving force to reduce skew in the sheet and feed the sheet along a feed path of a printer. The first pick wheel and the second pick wheel are aligned perpendicular to the feed path at an offset from the differential.

Abstract: An image forming system of one aspect of the present invention includes a first image forming apparatus arranged on the upstream side in a sheet conveyance direction, a second image forming apparatus arranged on the downstream side in the sheet conveyance direction, and an intermediate apparatus arranged between the first image forming apparatus and the second image forming apparatus and having a registration roller on the sheet conveyance path through which a sheet conveyed from the first image forming apparatus is conveyed to the second image forming apparatus. The intermediate apparatus has a path opening mechanism configured to release a pressure contact of the registration roller arranged on the sheet conveyance path.

Abstract: An image forming apparatus, including an image forming part which forms an image on a printing medium, a main feeding part which accommodates the printing medium and supplies the printing medium to the image forming part, and a reversing part which transfers the printing medium, on which an image is formed on a first surface thereof in the image forming part, to the main feeding part, wherein the main feeding part includes a feeding roller part which re-feeds the printing medium, having been transferred through the reversing part, to the image forming part.

Abstract: An image forming apparatus may include a mechanism for forming a corrugated shape in a sheet to be conveyed. The mechanism may include various components include one or more pressing portions, one or more ribs, one or more discharge rollers, a switching mechanism and the like. In one arrangement, ribs and pressing portions configured to create the corrugated shape may be disposed at various locations upstream or downstream of the platen, recording portion and/or nozzles thereof. In one example, pressing portions may be disposed both upstream and downstream of the nozzles of the recording portion to maintain a corrugated shape in the conveyed sheet. Various other configurations may be used.

Abstract: A sheet conveying apparatus according to one aspect of the present disclosure includes a housing, a sheet storage portion, a sheet conveying path, and a guide member. Housing is mounted to apparatus body that includes bottom portion having opening portion, and main sheet conveying path extending upward from opening portion to convey sheets, and includes top face portion arranged opposing bottom portion. Sheet conveying path extends from sheet storage portion to top face portion, and is configured to be capable of communicating with main sheet conveying path. Sheets are conveyed on sheet conveying path. Guide member is pivotably supported by housing, and is configured to be capable of changing its position between a first position where guide member follows along top face portion and a second position where guide member projects upward from top face portion to guide sheet toward main sheet conveying path from sheet conveying path.

Abstract: A conveying portion includes a pair of superimposing rollers and a controller which controls the rotation of the pair of superimposing rollers, wherein the controller controls a rotation of a pair of conveying rollers so that a tail end of a first sheet passes a nip portion between the pair of conveying rollers by conveying the first sheet to the downstream side before a leading end of a third sheet superimposed on a second sheet reaches the nip portion between the pair of conveying rollers nipping the first sheet and the second sheet superimposed on the first sheet.

Abstract: Provided herein is a document processing system with improved paper path alignment and superior media hold-down capability, which minimizes undesirable electrostatic fields in the print zone. The document processing system includes a first belt module including a first roller and a second roller with a tack belt in surrounding engagement with the first roller and the second roller. The processing system further includes a second belt module, which includes a third roller and a fourth roller with a media transport belt in surrounding engagement with the third roller and the fourth roller. A mounting support for the first belt module is also included herein, the mounting support is designed to allow the first module to self-align relative to the second transport.

Abstract: An image forming apparatus, including a chassis with an opening formed on one side thereof; a first placement section, on which a sheet inserted through the opening is placeable; a cover configured to be openable to expose and closable to cover the opening and configured to form, when in a position to expose the opening, an outer part of the first placement section outside the chassis; and a second placement section arranged in an upper position with respect to the first placement section, and on which a sheet inserted through the opening is placeable, is provided. The second placement section is detachably attached to the chassis through the opening.

Abstract: An apparatus includes a differential to receive a primary driving force, and provide a first driving force and a second driving force. A first pick wheel is to transfer the first driving force to a sheet. A second pick wheel is to transfer the second driving force to the sheet. The differential is to balance the first driving force and the second driving force to reduce skew in the sheet and feed the sheet along a feed path of a printer. The first pick wheel and the second pick wheel are aligned perpendicular to the feed path at an offset from the differential.

Abstract: A de-skewing mechanism for de-skewing a printing medium is disclosed. The printing medium is conveyed by a conveying mechanism in a first linear velocity. The de-skewing mechanism includes a first calibrating roller, a second calibrating roller and a first torque limiting member. The first calibration roller is utilized for conveying a first side of the printing medium in a second linear velocity greater than the first linear velocity, and the second calibrating roller is utilized for conveying a second side of the printing medium in the second linear velocity. The first torque limiting member is coupled to the first calibrating roller and is utilized for stopping driving the first calibrating roller when the first side of the printing medium reaches a predetermined tension, such that the second side of the printing medium is capable of proceeding relative to the first side, so as to be aligned with the first side.

Abstract: An image forming apparatus includes: a recording medium conveying mechanism configured to convey a recording medium; a registration roller configured to correct the direction of the recording medium; a first sensor set upstream in a recording medium conveying direction of the registration roller; an image forming section configured to form an image on the conveyed recording medium; and a lateral shift correcting apparatus set downstream of the image forming section and configured to correct the position of the recording medium in an oblique direction by an angle corresponding to a lateral shift amount of the recording medium detected by the first sensor.

Abstract: A medium carrying device includes an apparatus body, medium guide unit that is detachable with respect to the apparatus body, a carrying roller that is disposed in the apparatus body, and is configured to rotate to carry a print medium passing through the medium guide unit, and a driven roller that is disposed in the medium guide unit at a position corresponding to the carrying roller in a contacting manner so that the driven roller rotates in accordance with a rotation of the carrying roller.

Abstract: In a sheet member position correcting device and an image forming apparatus according to the present invention, a controller moves a driving roller toward one end side of the width direction by using a moving unit until a driven roller the position of which is deviated in the width direction with respect to the driving roller abuts on a stopper portion, and, subsequently, the controller further moves the driving roller to a predetermined position toward one end side of the width direction by using the moving unit in a state where the driven roller abuts on the stopper portion to correct the position of the driven roller in the width direction with respect to the driving roller.

Abstract: An information processing apparatus connected to an image forming apparatus includes: a size detecting unit that detects a size of each page of a document to be printed; an orientation detecting unit that detects orientation of each page of the document; a receiving unit that receives a setting of post processing that is to be performed on a printed sheet on which the document is printed; a determining unit that determines whether pages of different sizes, both having one side of the same length and other sides of different lengths, are detected in the document; a rotation control unit that, when the determining unit determines that the pages of the different sizes have been detected, rotates pages so that sides of the same length are aligned on the basis of the setting of the post processing; and an output unit that outputs the document with the pages rotated.

Abstract: A sheet conveying device that makes it possible to perform printing at high speed with high accuracy by easily correcting skew of a sheet, such as an index tab sheet, without requiring troublesome operations. Sheet detection sensors for detecting a sheet and skew correction rollers for conveying the sheet are disposed in a direction crosswise to a conveying direction of the sheet. A skew correction drive controller measures a leading edge detection time between respective detections of a leading edge of the sheet by the sensors, and controls the conveying speeds of the skew correction rollers independently of each other such that a skew represented by the leading edge detection time is corrected. If the leading edge detection time is not smaller than a predetermined threshold value, the skew correction drive controller reduces a skew correction amount for correcting the skew by a predetermined amount.

Abstract: A paper sheet stacking and recycling device (5) and a paper sheet processing apparatus having same. The device comprises: a paper sheet conveying and stacking mechanism (51), located in front of a paper sheet discharging port and used for conveying the discharged paper sheets to a preset position one by one and stacking; a paper sheet discharging mechanism, located at the front end of the paper sheet conveying and stacking mechanism and used for discharging the stacked paper sheets in stack; and a paper sheet recycling mechanism (52), located at the front end of a paper sheet storage container (23) and used for recycling the stacked paper sheets in stack. A paper sheet processing apparatus having the foregoing device is capable of avoiding secondary separation of single paper sheets and more deflection after the paper sheets pass through a device for tilt correction and the like, so as to reduce the occurrence probability of faults such as blocking.

Abstract: A roll assembly according to one example embodiment includes a rotatable input shaft having a rotational axis. At least one gear is mounted on the input shaft that rotates with the input shaft. A carrier frame is mounted on the input shaft and rotatable independent of the input shaft about the rotational axis of the input shaft. A plurality of rolls is rotatably mounted about a periphery of the carrier frame. An axial direction of rotation of each roll is transverse to the rotational axis of the input shaft. Each roll has a contact surface and a gear face that is operatively coupled to the at least one gear.

Abstract: Provided is a sheet conveying apparatus which conveys a sheet, includes: a sheet conveying path which diverges into a first conveying path and a second conveying path at a diverging point; a guide member which is movable between a first position where the guide member guides the sheet to the first conveying path and a second position where the guide member guides the sheet to the second conveying path; a driving portion which is configured to move the guide member to the second position from the first position; and a holding portion which, in a case that the guide member is driven by the driving portion to move to the second position from the first position, provides a load to the driving by the driving portion and holds the guide member at a third position between the first position and the second position.

Abstract: A printing system includes one or more lineheads that jet ink onto a first side of a print media. At least one roller supports a second side of the print media as the print media is transported through the printing system. A roller deformation adjustment mechanism abuts at least one roller and is configured to apply a force to the roller to deform the roller. The deformation of the roller compensates for web skew by changing the relative timing of ink flight times from the linehead to the first side of the print media. The linehead can be disposed on a movable support. The printing system can also include one or more linehead skew adjustment mechanisms configured to move the movable support to adjust a skew of the linehead.

Abstract: A method including printing an image onto a medium and printing an alignment region onto the medium. The method further including loading the medium to an electronic cutter and aligning the medium with the electronic cutter. The method further including cutting the image from the medium.

Abstract: An image forming apparatus according to an embodiment comprises a feed guide forming a feed path of a sheet and having an end portion movable between a closed position and an open position by rotating around a shaft, wherein the end portion is positioned above the shaft when the feed guide is in the open position, and the feed guide is configured to provide access for removal of a jammed sheet when in the open position. The image forming apparatus further comprises a holding unit configured to releasably hold the end portion of the feed guide in the open position.

Abstract: According to the present invention, skew feeding of a sheet is corrected while conveying the sheet, positioning of a side edge of the sheet in the width direction is carried out, and an image is formed on the sheet by an image forming portion 90. Two steering mechanisms 120a and 120b are disposed upstream of the image forming portion along the conveying direction, and the steering mechanisms 120a and 120b can feed a sheet on the skew in any direction with respect to the sheet conveying direction. Two CISs 100a and 100b are disposed along the sheet conveying direction corresponding to the steering mechanisms. A skew feeding angle and a skew feeding velocity of each of the steering mechanisms is changed according to differential value between a side edge position detected by the CISs 100a and 100b and a target position of a side edge of a sheet.

Abstract: A sheet conveying device that conveys a sheet includes a sheet conveying path, a conveying mechanism, and a guiding plate. The sheet conveying path is set to include a nonlinear portion. The conveying mechanism is arranged in the sheet conveying path to convey a sheet. The guiding plate is arranged in the nonlinear portion of the sheet conveying path and has a guiding plane along which the sheet is guided. The guiding plate includes a thinned portion in an area of the guiding plane against which a leading end of the sheet being conveyed along the sheet conveying path collides so that the thinned portion suppresses high frequency components of an impulsive sound produced by the collision.

Abstract: A multifunction machine includes: a first feeding roller and a second feeding roller; an intermediate roller pair provided to a curved portion of a transport route; a main transporting roller pair; a recording head; a first drive motor and a second drive motor; and a control section. The control section intermittently drives the main transporting roller pair and makes the recording head jet ink during a period of time in which the main transporting roller pair is stopped, and performs pre-paper feeding processing for rotating the first feeding roller a predetermined amount in a paper feeding direction when a rear end of a paper is positioned between a first sensor and the first feeding roller.

Abstract: An image forming apparatus has an image forming unit, a sheet supplying unit, a register roller, and a paper particle removing unit which includes a paper particle removing roller arranged to face the register roller and configured to collect paper particles on the sheet which is nipped between the register roller and the paper particle removing roller, a paper particle container configured such that the paper particles removed by the paper particle removing roller are accumulated therein, and an auger arranged inside the paper particle container. The paper particle removing roller, the paper particle container and the auger of the paper particle removing unit are configured to move together between a contact position where the paper particle removing roller contacts the register roller and a spaced position where the paper particle removing roller is spaced from the register roller.

Abstract: A media transport assembly includes a loadstop drive assembly to gather and compress a media stack in a media tray before a pick and feed cycle, and a pick drive assembly to pick a sheet of media from the media stack and feed the sheet of media to a media path. The loadstop drive assembly is positioned on one side of a gear wall and the pick drive assembly is positioned on an opposite side of the gear wall such that the pick drive assembly is driven by the loadstop drive assembly through the gear wall.

Abstract: A sheet transport device includes a registration section, a first sheet transport path and a second sheet transport path the two transport directions of which are substantially perpendicular to the sheet transport direction of the registration section, a confluence transport path, and a first guide member. The confluence transport path merges the first sheet transport path and the second sheet transport path. The first guide member may rotate toward the first sheet transport path when the sheet is fed from the first sheet transport path to the confluence transport path. The first guide member may rotate toward the second sheet transport path when the sheet is fed from the second sheet transport path to the confluence transport path.

Abstract: A printing medium supplying apparatus for an image forming apparatus includes an apparatus main body, and a printing medium aligning unit which is disposed on the apparatus main body to move between an aligning position at which the printing medium aligning unit aligns a printing medium and a distanced position at which the printing medium aligning unit is distanced from the aligning position.

Abstract: A sheet conveying device includes a pair of upstream sheet conveying rollers, a pair of downstream sheet conveying rollers, and a gate unit including multiple striking faces disposed adjacent to the pair of downstream sheet conveying rollers. The gate unit is enabled to enter and evacuate from a sheet conveyance path. A skew correction control mechanism is provided to correct skew by bringing the gate unit into the sheet conveyance path to cause the striking faces to collide with a leading end of the sheet with the skew while rotating the pair of upstream sheet conveying rollers. One or more rollers are included in one of the pair of upstream sheet conveying rollers and are disposed in the vicinity of a widthwise center of the sheet conveyance path. A width of one or more rollers is smaller than a widthwise interval between the multiple striking faces.

Abstract: A sheet conveying apparatus includes: a first conveying guide that has a first conveying face of a conveying path; a second conveying guide that has a second conveying face opposed to the first conveying face; and a guide portion that is provided at any one of the first conveying guide and the second conveying guide, the guide portion has an elastic member that is fixed to one of the first conveying guide and the second conveying guide, and a rigid member that is provided on the face side of the elastic member on which the sheet passes and that has a surface more rigid than that of the elastic member, and the elastic member is deformed by pressing of the conveyed sheet when the sheet passes through the guide portion.

Abstract: An apparatus for preparing a collation of sheets for folding operations. The system includes a registration device including multiple registration stations and a conveyance device for transporting the collation to one of the registration stations. Each registration station is adapted to register the edges of the collation based upon a desired edge geometry. A processor determines the fold configuration of the collation and determines the edge geometry thereof based upon the fold configuration of the collation. The processor selects one of the registration stations based upon the fold configuration and then controls the conveyance device to transport the collation to the selected registration station. The registration station selected may also be based upon the thickness of the collation and a desired location for binding the collation.

Abstract: Embodiments described herein are directed to registering media in a duplex printing system. A first side of a sheet of media is registered in a first pass in response to detection of a first end of the sheet. A registration marker is deposited on the sheet proximate to a second end of the sheet in the first pass. The registration marker can include a marking material that is in the non-visible light range. A second side of the sheet is registered in a second pass in response to detection of the registration marker deposited on the sheet.

Abstract: A roll assembly according to one example embodiment includes a rotatable input shaft. The input shaft is supported by a housing. At least one gear is mounted on the input shaft. A carrier frame is mounted on the input shaft and rotatable independent of the input shaft. A plurality of rolls is rotatably mounted about a periphery of the carrier frame. An axial direction of rotation of each roll is transverse to the rotational axis of the input shaft. Each roll has a contact surface and a gear face that is operatively coupled to the at least one gear. A first one-way clutching surface is positioned between one of (1) at least a portion of the rolls and the carrier frame, (2) the carrier frame and the input shaft, (3) the carrier frame and a portion of the housing, and (4) a combination thereof.

Abstract: A sheet conveyance apparatus includes a conveyance roller pair and a mechanism. While following movement of the sheet nipped by the conveyance roller pair, the mechanism moves the conveyance roller pair from a home position, and, in response to a trailing edge of the sheet passing through a conveyance roller pair nip portion, the mechanism returns the pair to the home position. The mechanism includes a movement supporting portion, a cam, a pressing member, and an urging member. The pressing member urges the conveyance roller pair toward the home position by exerting an urging force to the cam. In response to the conveyance roller pair and one of the cam and the pressing member moving in the width direction from the home position, the pressing member exerts the urging force to the cam in a direction reverse to a direction in which the conveyance roller pair has moved.

Abstract: A complex apparatus includes a recording device including a recording unit that executes recording on a medium; an image reading device, provided so as to be freely openable/closable with respect to the upper portion of the recording device via a hinge portion, including an image reading unit that reads an image; a first contact portion, provided in the image reading device, that makes contact with a housing of the recording device when the image reading device is in a closed state; a second contact portion, provided in the housing of the recording device, that makes contact with the first contact portion when the image reading device is in a closed state; and a third contact portion, provided in an apparatus frame that holds the recording unit, that makes contact with the housing of the recording device at the lower area of the second contact portion.

Abstract: A skew correction apparatus includes a first roller pair configured to nip a sheet to convey the sheet, a second roller pair provided upstream of the first roller pair and configured to nip the sheet and convey the sheet, a contact portion provided downstream of the first roller pair and configured to come in contact with a leading edge of the sheet conveyed with the first roller pair to correct a skew of the sheet, and a separation mechanism configured to set the second roller pair to a separated state before the skew of the sheet conveyed downstream with the first roller pair is corrected.

Abstract: A sheet feeding apparatus includes a manual feed tray on which sheets are stacked, a feeding member, side regulating plates, a detecting portion which detects positions of the side regulating plates and detects a width size of the sheets, an operation panel which receives an input of width size information of the sheets from a user, and a control circuit which compares width size information detected by the detecting portion and the width size information input to the operation panel, and stops a sheet feeding operation of the feeding member when the two pieces of width size information are different, and the control circuit compares the width size information of the detecting portion and the width size information of the operation panel, per sheet before the feeding member starts feeding the sheet.

Abstract: With a printing device in which a printing medium is moved relatively, and which prints on the printing medium, the surface of the medium is illuminated, a plurality of illuminated regions of the medium moving in this illuminated state are imaged to acquire a plurality of images. A region to be matched having a characteristic region within a first image is set out of the images, a similar region having the highest similarity to the characteristic region is determined within a second image that is different from the first image. The estimated movement amount of the medium is calculated from the positional relation between the region to be matched and the similar region. Error information indicating error in the estimated movement amount of the medium attributable to the angle of light directed at the medium is acquired, and the estimated movement amount is corrected.

Abstract: An item transport system includes an input transport for receiving items along a first transport path, an angle transport for conveying the items along a second transport path disposed at an angle with respect to the first transport path, an alignment transport for conveying the items along a third transport path disposed at approximately 90 degrees to the first transport path, and an alignment surface for engaging the items while the items are conveyed in the alignment transport. The alignment transport may include an alignment nip comprising a driven element and an idler element for engaging opposing surfaces of the items, a manifold, a source providing pressurized gas to the manifold, and an orifice in the manifold proximate to the third transport path, wherein the idler element is disposed in the orifice.

Abstract: A sheet conveying apparatus, including: a first conveying portion; a second conveying portion arranged downstream of the first conveying portion; a shutter member rotated by the pressure of the sheet and including a plurality of abutment surfaces against which a leading edge of the sheet conveyed by the first conveying portion abuts to correct a skew feed of the sheet; and an urging portion which provides the shutter member with an urging force for positioning one abutment surface at an abutment position at which the leading edge of the sheet abuts against the one abutment surface, the urging portion providing the shutter member with an urging force for rotating the shutter member to position another abutment surface at the abutment position after the leading edge of the sheet is nipped by the second conveying portion.

Abstract: A post-processing device includes a transport section transporting a sheet transported at a predetermined speed from an upstream side toward a downstream side; a load section on which the transported sheet is loaded; an aligner aligning the loaded sheet; an alignment controller performing control such that the aligner performs the alignment process on the sheet transported from the transport section to the load section for every predetermined number of sheets; and a transport controller controlling the transport section by causing the transport section to transport the sheet at a reduced speed for the every predetermined number of sheets so that the sheet transported at the reduced speed reaches the load section after the aligner completes the sheet alignment process that is performed on a previous sheet transported immediately prior to the sheet after the previous sheet is loaded on the load section.

Abstract: A printing medium alignment device and an image forming apparatus having the same, the image forming apparatus includes a printing medium supply unit to supply a printing medium, a printing unit to print an image on the printing medium supplied from the printing medium supply unit, and a printing medium alignment device to align the printing medium fed toward the printing unit. The printing medium alignment device includes: a register roller; an idle roller to form a nip with the register roller, to feed the printing medium to the printing unit; a register shutter to move to a first position to block the printing medium from entering the nip, to align the printing medium, and to move to a second position to allow the printing medium to enter the nip; and a shutter roller mounted in the register shutter. When the register shutter is in the second position, the shutter roller rolls while in contact with the printing medium, to decrease a friction between the printing medium and the register shutter.

Abstract: Document guide systems and methods employing a document platen are provided. According to an illustrative embodiment, a document guide system employing a document platen includes a document platen having a first, document-faceable side and a second, opposing side, and a document support sub-system adjacent the first side of the document platen. The document support sub-system and the first side of the document platen are adapted to receive a document therebetween, and the document platen forms an aperture adapted to allow electromagnetic radiation therethrough.

Abstract: A method and apparatus are disclosed for guiding an item of media travelling along a pre-determined transport pathway. The apparatus includes a guide body comprising an arcuate guide surface, at least one drive roller comprising an outer drive surface, and at least one pulley member having an outer item engaging surface that extends through an opening in the guide surface and is urged against the outer drive surface. The drive roller and pulley member co-operate to lift an item away from the guide surface at an arcuate region of the transport pathway.

Abstract: The present invention relates to a sheet conveying apparatus, comprising: a conveying portion conveying a sheet; a shutter member having an abutting surface for abutting the sheet to correct skew feeding; a biasing member for biasing the shutter member to position at a first position where the leading end abuts against the abutting surface; and a support mechanism which movably supports the shutter member to move in an order of the first position, a second position to which the shutter member moves by the sheet against biasing from the biasing member, and a third position where the shutter member abuts the sheet and stands by to move to the first position when a trailing end of the sheet passes the shutter member, while keeping the abutting surface facing upstream.

Abstract: A device for measuring a length of a recoding material, includes: a rotating body that rotates in contact with a recording material which is transported; a length measuring unit that measures a length of the recording material based on a rotation of the rotating unit; a detecting unit that detects at least one of a rotation and an oblique advance of the recording material; and a correcting unit that corrects a value measured by the length measuring unit based on an output of the detecting unit.

Abstract: In a transfer device, a flexible guide plate is disposed in a position upstream relative to a transfer position along a medium conveyance path, such that a first side of the guide plate faces to a recording medium being conveyed along the medium conveyance path. The guide plate has a downstream end portion that is angled by bending the guide plate. A support frame supports an upstream end portion of the guide plate and extends in a downstream direction beyond the downstream end portion to form an extension portion which is disposed opposite to a second side of the guide plate and toward which the downstream end portion extends obliquely downstream. The extension portion has a recess/hole formed in a position separated in an upstream direction from a first edge of the extension portion, to allow the downstream end portion to be moved without being blocked by the extension portion.

Abstract: After a sheet has once passed through a punching position, a conveyance roller pair conveys the sheet backward to the punching position. A lateral registration detection sensor detects a side edge position of the sheet in a width direction. When a sheet processing apparatus corrects the side edge position of the sheet by controlling a shift unit for moving the sheet in the width direction so as to correct the side edge position of the sheet, the sheet processing apparatus sets a shifting amount of the sheet to a value that is a predetermined amount greater than a shifting amount required to correct the side edge position of the sheet according to the side edge position of the sheet detected by the lateral registration detection sensor. After the sheet has passed through the die hole the sheet processing apparatus sets the shifting amount to the required value.

Abstract: A paper deskew device for an automatic document feeder includes a transport roller assembly, a deskew roller assembly, and a power transmission mechanism. The transport roller assembly includes a first gear. The deskew roller assembly includes a second gear. Before a front edge of a paper is contacted with the deskew roller assembly, the first gear links the power transmission mechanism and the second gear, so that the transport roller assembly and the deskew roller assembly are respectively rotated in a first direction and a second direction. Once the front edge of the paper is contacted with the deskew roller assembly, the deskew roller assembly is continuously rotated in a second direction for a second direction for correcting the skew phenomenon of the paper. Afterwards, the second gear and the deskew roller assembly are driven by the first gear to be rotated in the first direction to transport the paper.

Abstract: A sheet processing apparatus includes a sheet stacking unit where sheets to be processed are stacked, a regulating member, a sheet waiting unit, a first moving unit, a second moving unit, and a control unit. The regulating member abuts on one edge of sheets conveyed to the sheet stacking unit. The sheet waiting unit keeps sheets waiting, stacks the waiting sheets displaced sequentially, and then conveys the sheets to the sheet stacking unit. The first moving unit sequentially moves the conveyed sheets, starting from a lowermost sheet, to be abutted against the regulating member. The second moving unit moves the conveyed sheets to the first moving unit. The control unit controls a moving speed of the second moving unit so that a next sheet does not reach the first moving unit until the sheet moved by the first moving unit is abutted against the regulating member.