Abstract: A sheet conveying apparatus including: a cover that is provided in an apparatus main body in an openable and closable manner to open a sheet conveying path through which the sheet is conveyed, by rotating in an open direction from a closed position; a guide member that is movably provided in the cover and forms the sheet conveying path; and a moving portion that is provided with a contact portion coming into contact with the sheet conveyed through the sheet conveying path, and is movably provided in the guide member; wherein the guide member moves with respect to the cover by rotating the cover in the open direction from the closed position, and thereby the moving portion moves by its own weight in a direction in which the contact portion of the moving portion is retracted from the sheet conveying path.

Abstract: A sheet conveyor device includes a registration roller, an intermediate roller, a first sheet detection section, a first drive controller, a second drive controller, and a third drive controller. The registration roller conveys a sheet toward an image forming section for image formation. The intermediate roller conveys the sheet toward the registration roller. The first sheet detection section is used for optically detecting the sheet between the registration roller and the intermediate roller. The first drive controller drives the intermediate roller, while suspending driving of the registration roller. The second drive controller drives the registration roller when a predetermined conveyance wait period elapses from detection of a sheet by the first sheet detection section. The third drive controller drives the registration roller when a predetermined forced conveyance period elapses from a start of conveyance of the sheet loaded on a sheet loading section.

Abstract: A sheet aligning device may include a sheet conveyance path; a detecting unit configured to detect a side edge of a sheet being conveyed in the sheet conveyance path; a stopper on an upstream side of the detecting unit and configured to open/close so as to allow/prevent passage of the sheet and to position a leading edge of the sheet; a first conveying unit on an upstream side of the stopper, the first conveying unit including a pair of first rollers configured to come in contact with/separate from each other; a second conveying unit on an upstream side of the first conveying unit, the second conveying unit including a pair of second rollers configured to come in contact with/separate from each other; and a horizontal movement unit configured to move the pair of first rollers in an axial direction based on a detection result output by the detecting unit.

Abstract: A sheet conveying device, which is incorporated in an image forming apparatus, includes a sheet holding and conveying roller pair having two rollers to convey a sheet while holding the sheet between the two rollers at a nip where the two rollers contact each other, and a gate member disposed movable with rotation of the sheet holding and conveying roller pair to correct skew of the sheet in a sheet conveying direction when a leading end of the sheet in the sheet conveying direction abuts against the gate member. The gate member has a contact surface against which the sheet abuts. The contact surface of the gate member is disposed upstream from the nip of the sheet holding and conveying roller pair in the sheet conveying direction. A setting position of the contact surface is adjusted according to thickness of the sheet.

Abstract: Provided is a document reading apparatus capable of suppressing a shock that may occur when a trailing edge of a tabbed sheet passes through a roller pair. In an image reading section, when a document to be read is the tabbed sheet, a timing to start separation of the roller pair in response to detection of a trailing edge of the document is delayed by a time period corresponding to a tab length with respect to the timing to start separation when a document other than the tabbed sheet is conveyed. Thus, it is possible to prevent the shock when the trailing edge of the tabbed sheet passes through the roller pair, and to thereby suppress image reading failure due to the shock.

Abstract: A device for handling notes of value including a transport unit for transport of the notes of value in a transport direction along a transport path, and an aligning unit for alignment of the notes of value. The device further includes a sensor arranged upstream of the aligning unit for determining at least one feature of the notes of value, and a control unit that controls the aligning unit such that the aligning unit aligns each note of value depending on the determined expression of the feature of the note of value in a preset first target alignment or at least in a preset second target alignment that is different from the first target alignment.

Abstract: Provided is an image forming apparatus including an image forming unit with a plurality of developing devices, a sheet transport unit, a sheet position measurement unit that measures a position of the sheet during the transport in a direction crossing a sheet passage, a displacement correction unit that moves the sheet during the transport in the sheet-passage crossing direction to correct a displacement of the sheet, and a control unit that carries out the displacement correction for the sheet by the displacement correction unit for the measured sheet depending on the measurement result by the sheet position measurement unit if the developing device located on a upstream side is used, and carries out position correction for an image and reduces an interval of the image formation for each sheet if the developing device located on the upstream side is not used.

Abstract: When a bill is inserted into the bill acceptor, sensor components sense the insertion of bill, bill-pressing roller set of bill transmission mechanism is driven to press bill, bill-transfer roller set is driven to transfer bill the bill-pressing roller set is released from the bill, and step motors of alignment correction unit are controlled to move correction devices toward each other to align the bill with the center line of bill passage subject to a predetermined number of steps. If the resistance force from bill is larger than the thrust force produced during rotation of step motors, utilize the step loss status of step motors and enable transmission devices to move correction devices away from bill when the rotation of step motors reaches the predetermined number of steps, and then enable bill-pressing roller set to press bill again and then enable bill-transfer roller set to transfer bill.

Abstract: A sheet conveying apparatus including: a locking member having an abutment surface abutting a sheet to correct skew feed of the sheet; a holding member configured to hold the locking member to rotate from a waiting position when the locking member is pushed by the sheet; a roller pair configured to nip the sheet abutting the abutment surface; a first urging portion configured to urge the holding member to the waiting position; a movable support portion configured to support the locking member in a manner that the locking member is located a retracted position where the locking member contacts a surface of the sheet and allows the sheet to pass; and a second urging portion configured to urge the locking member to a position where the abutment surface abuts a succeeding sheet.

Abstract: The present device includes a conveying path, a contact member coming in contact with the front of a printing medium to stop the conveyance of the medium, a hold member holding the front of the medium having contacted with the contact member, a first conveying unit conveying the medium so as to abut the contact member to form slack on the medium between itself and the hold member holding the medium, and a second conveying unit being provided nearer to the hold member than the first conveying unit in the conveying direction and conveying the medium so as to abut the contact member to form the slack. The second conveying unit is movable so that a part thereof existing on the side where the slack is formed on the medium in the conveying path is moved to the outside of the conveying path.

Abstract: An image forming apparatus acquires an amount of deflection of the transporting sheet from a reference position thereof and calculates a required shift amount of the sheet. It determines whether or not the sheet is shifted frontward. If so, the image forming apparatus acquires a second specified shift value which is determined based on an urging force and the required shift amount using a second correction equation. Alternatively, if the sheet is shifted backward, the image forming apparatus acquires a first specified shift value which is determined based on the urging force and the required shift amount using a first correction equation. The image forming apparatus performs a registration roller shift correction based on the acquired first or second specified shift value.

Abstract: A threshold for detecting a position of a lateral edge of a sheet is more accurately determined, whereby the accuracy of detection of the lateral edge position of the sheet is improved. A line sensor includes a plurality of element blocks. Each element block includes a plurality of pixels. The threshold for detecting the lateral edge position is determined based on a light level and a dark level of signals output from an element block that is actually used to detect the lateral edge position of the sheet.

Abstract: A post-processing apparatus which enable reduction of shift alignment time and improvement of productivity. A shift unit performs a shifting operation for shifting a conveyed sheet, in a lateral direction orthogonal to a sheet conveying direction. An alignment unit aligns the sheet by a pair of alignment members thereof which are moved toward each other such side edges of the sheet in the lateral direction are held therebetween. A CPU of a finisher controller controls the alignment unit and the shift unit such that an operation for moving the alignment members from respective first standby positions in the lateral direction to respective second standby positions closer to the sheet than the corresponding first standby positions is executed in parallel with the shifting operation by the shift unit.

Abstract: A sheet conveyor device includes a registration roller, an intermediate roller, a first sheet detection section, a first drive controller, a second drive controller, and a third drive controller. The registration roller conveys a sheet toward an image forming section for image formation. The intermediate roller conveys the sheet toward the registration roller. The first sheet detection section is used for optically detecting the sheet between the registration roller and the intermediate roller. The first drive controller drives the intermediate roller, while suspending driving of the registration roller. The second drive controller drives the registration roller when a predetermined conveyance wait period elapses from detection of a sheet by the first sheet detection section. The third drive controller drives the registration roller when a predetermined forced conveyance period elapses from a start of conveyance of the sheet loaded on a sheet loading section.

Abstract: A sheet retention device is provided for retaining at least one sheet. The sheet retention device comprises a sheet supporting means for supporting at least a first portion of the sheet, a rotatable guiding means configured to enclose a second portion of the sheet, an urging means and a drive means for in operation controllably rotating the rotatable guiding means. The rotatable guiding means comprises a passageway arranged through the rotatable guiding means, which passageway is configured to enclose the second portion of the sheet, the passageway having an entrance portion at one side of an outer surface of the rotatable guiding means and an exit portion at another side of an outer surface of the rotatable guiding means. Said exit portion is arranged in the passageway at an opposite end with respect to the entrance portion.

Abstract: A conveying device includes a pair of first nipping rollers configured to be movable in a width direction while nipping a recording medium and rotate to convey the recording medium; a pair of second nipping rollers configured to be movable in the width direction while nipping the recording medium and rotate to convey the recording medium, the pair of second nipping rollers being arranged on an upstream side of the first nipping rollers in a conveying path; and a detecting unit configured to detect an amount of positional deviation in the width direction of the recording medium being conveyed in the conveying path. The pair of first nipping rollers is moved in the width direction based on a detection result of the detecting unit while the pair of first nipping rollers nips the recording medium so that a positional deviation of the recording medium in the width direction is corrected.

Abstract: A system can include an input for receiving objects having a flat shape; a capacitance sensing network comprising a plurality of capacitance sensors positioned to be proximate to the received objects; an operations section coupled to the capacitance sensing network and configured to perform predetermined operations on the objects; and a processor section coupled to receive capacitance sense values from the capacitance sensors and configured to determine the presence and features of received objects, prior to the objects being forwarded to the operations section.

Abstract: An image forming apparatus includes an image forming device and a sheet adjusting device to adjust a lateral position of the sheet by moving a sheet in a lateral direction perpendicular to a sheet conveyance direction. The sheet adjusting device moves a driving roller in one of a first direction and a second direction for adjusting a lateral position of the sheet between the driving roller and a driven roller and then adjusting a lateral position of the driven roller to the driving roller by moving the driving roller in the second direction until the misaligned driven roller laterally contacts respective stoppers to restrict a range of lateral movement of the driven roller while the sheet is separated from the driving roller and the driven roller and by further moving the driving roller to a predetermined position while the driven roller remains contacting the stoppers.

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 reading apparatus includes an image reading unit for reading an image of a document at a reading position, a document feeding unit for discharging the document via the reading position, an abnormality detection unit for detecting a feeding abnormality, and a reading determination unit. The reading determination unit determines that the reading of the image of the fed document by the image reading unit is complete in a case where it is determined that a fed document, which is being fed by the document feeding unit, is not a final document, and it is detected that the leading edge of the fed document has reached the reading position, and when it is detected that the leading edge of the subsequent document has reached the reading position without the abnormality detection unit detecting any abnormality.

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 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 conveying device includes a pair of first nipping rollers configured to be movable in a width direction while nipping a recording medium and rotate to convey the recording medium; a pair of second nipping rollers configured to be movable in the width direction while nipping the recording medium and rotate to convey the recording medium, the pair of second nipping rollers being arranged on an upstream side of the first nipping rollers in a conveying path; and a detecting unit configured to detect an amount of positional deviation in the width direction of the recording medium being conveyed in the conveying path. The pair of first nipping rollers is moved in the width direction based on a detection result of the detecting unit while the pair of first nipping rollers nips the recording medium so that a positional deviation of the recording medium in the width direction is corrected.

Abstract: A sheet conveyance apparatus includes a control unit which controls the operation of a registration roller shift motor so as to perform positional deviation correction based on the detection result of a contact image sensor (CIS) configured to detect positional deviation in the width direction of a sheet. When the amount by which the registration roller shift motor moves the registration roller in the width direction exceeds an upper limit value, the control unit limits the movement amount by which the registration roller shift motor moves the registration roller in the width direction.

Abstract: A sheet conveyance apparatus includes a sheet conveyance unit configured to convey a sheet, a transfer unit disposed downstream of the sheet conveyance unit and configured to transfer a toner image onto the sheet, a shifting unit configured to shift the sheet conveyed by the sheet conveyance unit in a width direction by shifting the sheet conveyance unit, a detection unit configured to detect a position of the sheet in the width direction while the sheet is being conveyed by the transfer unit, and a control unit configured to control the shifting unit. The control unit causes the sheet conveyed by the sheet conveyance unit to shift in the width direction based on a result detected by the detection unit while the sheet is being conveyed by the transfer unit.

Abstract: A skew correcting device includes a first roller pair configured to nip and convey a sheet, a second roller pair disposed upstream of the first roller pair and configured to nip and convey the sheet, a contact portion disposed downstream of the first roller pair, the contact portion being a portion that the leading edge of the conveyed sheet comes into contact to correct skew of the sheet, a switching mechanism configured to change a nipping force of the first roller pair before the leading edge of the conveyed sheet comes into contact with the contact portion to form a loop in the sheet, and a control unit configured to make a determination on the basis of sheet information as to whether the nipping force of the first roller pair is to be changed, the control unit being configured to control the switching mechanism on the basis of the determination.

Abstract: A banknote inclination correction device and an ATM (Automatic Teller Machine) including the banknote inclination correction device. The banknote inclination correction device includes: an inner channel board (008); an outer channel board (009); a banknote transfer channel formed between the inner channel board (008) and the outer channel board (009); a reference wall (008a) arranged on one side of the inner channel board (008) and the outer channel board (009); a transfer wheel (011) located at the inlet of the banknote transfer channel, and arranged on the inner channel board (008) or the outer channel board (009); multiple inclination correction wheel groups (014) configured on the inner channel board (008) or the outer channel board (009); and a transfer side wheel (019) located between the reference wall (008a) and the multiple inclination correction wheel groups (014), the transfer side wheel (019) is parallel to the reference wall.

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: Systems for moving a moveable drive module in a cross-process direction are disclosed. A system includes a moveable drive module including a drive roll and a translation drive motor capable of moving the moveable drive module in a cross-process direction. The system may optionally include a plurality of idler rolls, each configured to be associated with the drive roll when the moveable drive module is in an associated position. Optionally, the moveable drive module may further include an idler roll associated with the drive roll. Alternately, the system may further include a moveable idler module including an idler roll and a translation drive motor capable of moving the moveable idler module in a cross-process direction.

Abstract: An image forming apparatus reflecting one aspect of the present invention includes a deviation detecting portion, a registration roller, and a leading end detecting portion. The deviation detecting portion detects a deviation amount of the sheet being fed from a reference position in a sheet width direction orthogonal to a feeding direction. The registration roller modifies deviation by swinging the sheet being fed in the sheet width direction in accordance with the deviation amount detected by the deviation detecting portion. The leading end detecting portion is disposed on the downstream side in the sheet feeding direction of the registration roller and detects a leading end of the sheet being fed. The leading end detecting portion detects the leading end of the sheet after deviation is modified by the registration roller.

Abstract: A sheet feeding device includes: a feeding mechanism having a first roller and a second roller provided downstream in a sheet feeding path from the first roller and feeding a sheet by rotations of the first and second rollers; a control section executing a butting control by controlling the first and second rollers to feed the sheet from the first roller so as to butt against the second roller at an intake position, and executing an intake feeding control by controlling the second roller to feed the sheet downstream in the feeding path from the intake position; an obtaining section obtaining information indicating a rotation amount of the second roller in a period after the butting control to the start of the intake feeding control; and a target setting section setting a target rotation amount of the second roller that should be achieved in the intake feeding control.

Abstract: A method of a sheet alignment includes carrying a sheet from a sheet discharging port; transferring the sheet on a tray device toward a sheet end regulating device; moving the sheet on the tray device in a width direction orthogonal to the sheet discharging direction for widthwise alignment; and abutting again the sheet on the tray device against the sheet end regulating device while the sheet is in the widthwise alignment. When the sheet on the tray device is transferred toward the sheet end regulating device, the sheet is transferred at a predetermined speed. Before the sheet abuts against the sheet end regulating device, the speed is reduced to provide a conveying force to the sheet without stopping. While the conveying force is continuously applied to the sheet, the sheet is aligned in the width direction to thereby prevent skewing of the sheet relative to the sheet end regulating device.

Abstract: According to aspects illustrated herein, a system, a printmaking device, and a method for pre-curling and registering media are provided herein. The system includes a media curler system and a deskew mechanism. The media curler system pre-curls at least one of lead edge and a trail edge of a sheet before delivery to a media hold-down transport. The deskew mechanism is coupled to the media curler system for pivoting the media curler system about a pivot axis to deskew the sheet. The pivot axis extends perpendicular to the media transport path. In operation, as the lead edge enters the pre-curling and registration system, the media curler system pre-curls the sheet towards the media hold-down transport. As the sheet is being pre-curled, the deskew mechanism pivots the media curler system about the pivot axis to correct any skew errors in the sheet.

Abstract: Disposed are support means for mounting at least a part of a sheet between a sheet discharge outlet and a stack tray disposed with a height difference formed vertically, sheet end regulation means for striking the end edge of the sheet supported by the support means to regulate, and aligning transport means for carrying the sheet toward the regulation means. Then, the transport means is comprised of a friction transport body that engages in the sheet top surface on the support means, and transport body travel means for shifting the transport body by a predetermined amount in the crossing direction inclined a predetermined angle with respect to the sheet discharge direction. The friction transport body is configured so that friction drag of the sheet surface is smaller in the travel orthogonal direction than in the travel direction.

Abstract: According to aspects illustrated herein, a printmaking device, a method, and a system for reducing process direction errors of a sheet in a registration device is provided herein. The printmaking device includes a feed path, a printing module, and a sheet registration system. The sheet registration system is along the feed path and includes at least one trail edge sensor, a registration controller, and at least one pair of registration nips. The feed path moves a first side of the sheet in a process direction. The registration controller registers the first side of the sheet by: measuring and correcting a first skew error of the sheet; measuring and correcting a first arrival time of the trail edge of the sheet to determine a first process direction position of the sheet; and delivering the first side of the adjusted sheet at a first predefined delivery time.

Abstract: A sheet conveyance apparatus includes a conveyance roller pair, a conveyance roller driving unit, a registration roller pair, a registration driving unit, a separation and press-contact unit configured to set the registration roller pair to a separated state and to a press-contact state, and a control unit. After a sheet has stopped at a stop position immediately before the registration roller pair, the registration roller pair having been set to the separated state is set to the press-contact state. The registration roller pair is rotated backward during formation of a loop in the sheet.

Abstract: A sheet conveyance apparatus includes a shift unit which includes a conveyance roller pair capable of being placed in a contact state and a separation state and configured to convey sheets having an overlapping portion where a rear end portion of a preceding sheet and a front end portion of a following sheet overlap each other. The shift unit is movable in a widthwise direction while conveying the sheets by the conveyance roller pair. The sheet conveyance apparatus moves the shift unit in the widthwise direction when it is determined that the overlapping portion of the sheets has reached the conveyance roller pair.

Abstract: The invention relates to a device (10) for handling notes of value comprising a transport unit (24, 26) for transport of the notes of value in a transport direction (P2) along a transport path (602) and an aligning unit (600) for alignment of the notes of value. Further, the device (10) comprises a sensor (300) arranged upstream of the aligning unit (600) for determining at least one feature of the notes of value, and a control unit (28) that controls the aligning unit (600) such that the aligning unit (600) aligns each note of value depending on the determined expression of the feature of the note of value in a preset first target alignment or at least in a preset second target alignment that is different from the first target alignment.

Abstract: An image forming apparatus includes an image forming device and a sheet adjusting device to adjust a lateral position of the sheet by moving a sheet in a lateral direction perpendicular to a sheet conveyance direction. The sheet adjusting device moves a driving roller in one of a first direction and a second direction for adjusting a lateral position of the sheet between the driving roller and a driven roller and then adjusting a lateral position of the driven roller to the driving roller by moving the driving roller in the second direction until the misaligned driven roller laterally contacts respective stoppers to restrict a range of lateral movement of the driven roller while the sheet is separated from the driving roller and the driven roller and by further moving the driving roller to a predetermined position while the driven roller remains contacting the stoppers.

Abstract: A system and method for skew correction of a mailpiece includes moving the mailpiece along a path of travel in a first orientation toward a first drive roller and a second drive roller. Control of the mailpiece is established in the first orientation by the drive rollers. A first skew correction of the mailpiece is implemented by employing the first drive roller and the second drive roller to align the mailpiece with respect to the path of travel. The first drive roller and the second drive roller may be employed to change the orientation of the stopped mailpiece from the first orientation to a second orientation with respect to the path of travel. A second skew correction may be implemented by employing the first drive roller and the second drive roller to align the mailpiece in the second orientation with respect to the path of travel.

Abstract: A media conveying system for aligning a media sheet in a media path of an image forming apparatus may include a first roll mounted across the media path, a second roll mounted relative to the first roll so as to define a first nip between the first roll and the second roll, and a reference edge positioned along a side of the media path. A drive mechanism is coupled to the second roll for translating the second roll in a first direction such that a media sheet positioned in the nip moves in the first direction towards the reference edge.

Abstract: A threshold for detecting a position of a lateral edge of a sheet is more accurately determined, whereby the accuracy of detection of the lateral edge position of the sheet is improved. A line sensor includes a plurality of element blocks. Each element block includes a plurality of pixels. The threshold for detecting the lateral edge position is determined based on a light level and a dark level of signals output from an element block that is actually used to detect the lateral edge position of the sheet.

Abstract: A sheet conveying apparatus and an image forming apparatus capable of high-precision sheet position correction includes a data storage portion that stores, at the time of moving a pair of registration rollers in the width direction, the deficiency quantity of a motion quantity in the width direction and an inclination quantity incurred in the pair of registration rollers with respect to the sheet conveying direction. At the time of correcting a skew feeding of a sheet by a pair of skew feeding correction rollers, a controller adjusts a skew feeding quantity detected by an activation sensor by the inclination quantity stored in the data storage portion, and at the time of moving the pair of registration rollers in the width direction, the controller adjusts the motion quantity by the deficiency quantity of the motion quantity stored in the data storage portion.

Abstract: A sheet feeding device having; a first conveyance roller pair that feeds a sheet; a second conveyance roller pair that feeds the sheet, the second conveyance roller pair being provided downstream from the first conveyance roller pair in a feed direction in which the sheet is fed; and a third conveyance roller pair that feeds the sheet, the third conveyance roller pair being provided downstream from the second conveyance roller pair in the feed direction, in which, when an edge of the sheet that is located on the downstream side of the feed direction is skewed with respect to a direction perpendicular to the feed direction, the second conveyance roller pair slides in the perpendicular direction with the sheet slacking between the first conveyance roller pair and the second conveyance roller pair.

Abstract: A first resist roller (72) and a second resist roller (75) are disposed in a transport path of paper on an upstream side and a downstream side in the transport direction of the paper, and the rotational speeds of the first resist roller (72) and the second resist roller (75) are controlled so that the leading edge of the paper butts against and stops at the first resist roller (72) and the second resist roller (75), after which the paper is transported by the first and second resist rollers (72, 75) and the angled travel of the paper is corrected. An angled travel detection unit (81, 82) that detects angled travel in the paper is disposed upstream from the first resist roller (72) in the transport direction of the paper.

Abstract: A sheet conveying apparatus which detects an end part position of a sheet in a sheet width direction orthogonal to a conveying direction of the sheet conveyed on a sheet conveying path, comprising a plurality of sensor portions; a holding portion which holds the plurality of sensor portions; a plurality of aperture stops which is disposed between the light emitting portion and the light receiving portions and which is provided on the holding portion; and a driving portion which causes a movement of the holding portion in the sheet width direction.

Abstract: A sheet conveying apparatus has an upstream roller and a registration roller configured so that the sheet conveyed by the upstream roller abuts the registration roller to form a loop in the sheet to correct for skew. The skew of the sheet is corrected for by the leading edge of the sheet abutting the registration roller to bend the sheet so as to form the loop in the sheet. A resist sensor detects a time difference of passing time between the advanced leading edge and the retarded leading edge in the downstream leading edge of the sheet conveyed by the upstream roller, detects the skew amount of the sheet based on the time difference, and changes the backward rotation time of the registration roller depending on the skew amount.

Abstract: A medium alignment apparatus may include an alignment body to form a transfer path is formed for passage of a medium and include an alignment reference surface for alignment of the medium is formed, an alignment roller portion mounted to the alignment body to align the medium while driving the medium simultaneously, and at least one alignment sensor portion to detect whether the medium is aligned by detecting a position of the medium passing along the transfer path. The alignment body may include a first body forming a transfer path for the medium, to which the alignment roller portion is mounted, and a second body disposed at one side of the first body to be movable relative to the first body at a speed corresponding to a transfer speed of the medium, providing a side directed to the first body as the alignment reference surface.

Abstract: A method and an apparatus for laterally aligning a sheet in a processing machine, in particular a printing machine, carries out lateral sheet alignment on a cylinder of the printing machine, e.g. a feed cylinder. In order to achieve large correction distances in relation to a possible lateral movement capability of a gripper bar, the latter is prealigned prior to correction in such a way that, in the event of deviation from predetermined desired values, it is prealigned laterally to defined positions. A sheet-fed rotary printing machine having the apparatus, is also provided.