Abstract: An apparatus including a sheet registration nip assembly for changing characteristics of the sheet with respect to the transport path. The characteristics of the sheet including a skew position, process direction position or a lateral position of the sheet. The registration nip assembly changing a first sheet characteristic to a first target characteristic by the time the sheet reaches a preliminary registration datum. A delivery registration datum disposed downstream of the registration nip assembly. The registration nip assembly changing a second sheet characteristic to a second target characteristic when at least a portion of the sheet is disposed along the transport path between the preliminary registration datum and the delivery registration datum. The apparatus including an auxiliary nip assembly disposed between the delivery registration datum and the registration nip assembly, wherein the preliminary registration datum is disposed between the delivery registration datum and the auxiliary nip assembly.

Abstract: A sheet post-processing apparatus includes a discharge portion configured to discharge a sheet having a folding portion, a conveyance portion configured to abut on a lower surface of the sheet discharged by the discharge portion, to convey the sheet downstream in a sheet conveyance direction of the discharge portion, a pressing portion arranged at a position opposing the conveyance portion, configured to press an upper surface of the sheet discharged by the discharge portion, and a moving portion configured to move the pressing portion in the sheet conveyance direction of the conveyance portion, in which the moving portion moves the pressing portion upstream in the sheet conveyance direction of the conveyance portion, to move the pressing portion from a position where the sheet discharged by the discharge portion is not pressed to a position where the sheet discharged by the discharge portion is pressed.

Abstract: A sheet processing apparatus includes a sheet-table unit, a sheet-separating unit, a convey unit, a discharge unit, a sheet processing unit, and a sensor arranged at an upstream end of the convey unit and spaced from the discharge unit with a predetermined distance. The convey unit has at least one convey roller, at least one convey pulley, and an elastic device connected with the convey pulley. The elastic device has a stepping motor, a transmission system, a shaft and at least one torsional spring mounted on the shaft. Two ends of the torsional spring is connected with the convey pulley. When the signal resulted from a rear end of the sheet apart from the sensor is sent to the system controller, the stepping motor is commanded by the system controller to rotate the shaft. The torsional spring is twisted to make the convey pulley move away from but still contact with the convey roller.

Abstract: A medium pressurizing device includes: two rotating bodies that rotate and allow a recording medium held in a contact part to pass; a pressurizing member that applies, to one of the rotating bodies, a pressure of pressing the one toward the other; a drive roll disposed downstream from the contact part in a conveyance direction, and rotating thereby transmitting a conveyance driving force to the recording medium; and a following roll contacting the drive roll, and rotating by following rotation of the drive roll, thereby conveying the recording medium held therebetween. The device further includes: an axis member rotating by receiving a driving force; and a cam member fixed to the axis member, acting on the pressurizing member, and following rotation of the axis member, thereby changing the pressure. The following roll has a hollow, and the axis member is disposed to pass through a space in the hollow.

Abstract: A depinching mechanism including a frame, a star wheel assembly, a limiter arm, a rocker arm and a sensor is provided in present invention. Through the depinching mechanism the star wheel assembly is lifted from the first position to the second position when paper jam occurs, and thus depinched the media the user can clear the paper jam. And after that the star wheel assembly is lowered from the second position to the first position. The star wheel assembly remains in the first position in the normal printing process. Since when paper jam occurs the star wheel assembly is lifted by the depinching mechanism, the user can easily and conveniently remove the jammed paper. And thus, the depinching mechanism can facilitate the user to remove jammed paper when paper jam occurs in printer. Thus, the depinching mechanism can be used in printers to solve the paper jamming problems.

Abstract: The present invention relates to a medium transfer apparatus for an automated teller machine, wherein a portion of medium transfer apparatus is opened and shut by a simple operation, thereby conveniently and quickly solving the problem of jams occurring when the medium transfer apparatus transfers a paper medium.

Abstract: An aspect of the invention provides a sheet conveying apparatus, an image forming apparatus, and an image reading apparatus, in which generation of skew feeding caused by the shock in pressure contact of a rotation body can be reduced. An interlocking mechanism brings a driven roller 222 biased by a biasing member into pressure contact with a feeding portion 221c of a driving roller 221 in conjunction with rotation of the driving roller 221. The driving roller 221 includes a non-feeding portion 221d in a circumferential surface thereof. The driven roller 222 is caused to abut on a pressure holder 225 before the driven roller 222 moved in a direction in which the interlocking mechanism brings the driven roller 222 into the pressure contact with the driving roller 221 is brought into the pressure contact with the driving roller 221.

Abstract: A paper feeder assembly for an image forming apparatus is configured to sandwich a sheet of paper between a roller and an opposing pressing member and feed the sheet of paper by the roller being rotated. The paper feeder assembly includes a pressure variable member for varying pressurized contact force between the roller and the pressing member. In conjunction with ON/OFF action of a power supply switch provided in a main body of the image forming apparatus, the pressure variable member ensures pressurized contact force enough to fix an image when the power supply switch is turned on, whereas the pressure variable member operates to separate the roller and the pressing member from each other when the power supply switch is turned off.

Abstract: A roll assembly, including a frame; a first component mounted to the frame and having a shaft, the shaft; a second component rotatably mounted to the frame and disposed in proximity with the first component, wherein at least one of the first component and the second component is translatable relative to the other; and a plurality of separator devices mounted on ends of the shaft of one of the first and second component.

Abstract: The present disclosure provides a printing device comprising a sheet buffer including a paper path having a plurality of nip pairs for selectively receiving and releasing a plurality of printer sheets. The plurality of nip pairs include a fixed load nip pair, a fixed unload nip pair, and at least another intermediate fixed nip pair therebetween. In a first operation each subsequent sheet of the plurality of sheets is shingled over a previous sheet wherein the plurality of sheets can be stopped in the intermediate nip pair or pairs. Individual sheets of the plurality of sheets can be advanced to the unload nip pair sequentially in a second operation whereupon the individual sheets are successively unloaded as needed in a first in first out order.

Abstract: A medium conveying device includes a first guide member, a second guide member, a conveying member, and a support member. The first guide member guides one face of a medium to be conveyed and opposed to the one face when the medium is conveyed. The second guide member guides the other face of the medium and is opposed to the other face when the medium is conveyed, the second guide member being movable between a close position and an open position. The conveying member is provided in a conveying passage formed by the first guide member and the second guide member being at the close position in order to convey the medium in the conveying passage. The support member keeps the second guide member at the open position and is provided at a position outer than the second guide member in a direction that the medium is conveyed. When the second guide member is at the open position, the medium in the conveying passage is removable from the conveying passage.

Abstract: A feeder for feeding printed products includes a casing comprising a one-piece frame including two spaced apart end plates and a plurality of crosspieces connecting the two end plates. At least one shaft is arranged on the end plates. At least one positioning element is arranged on the end plates to position the shaft on the end plates.

Abstract: A sheet conveying apparatus and an image forming apparatus are provided. The sheet conveying speed of a pair of conveying rollers which convey a sheet to a skew feeding correction device 55 and can be contacted and separated is set to be a speed in which the sheet obliquely conveyed by a pair of first oblique feed rollers is warped between the pair of first oblique feed rollers and the pair of conveying rollers. After the sheet is warped, a separation mechanism is controlled to separate the pair of conveying rollers.

Abstract: An apparatus for varying the speed of printed products is provided. The apparatus includes a nip roll rotatable about a nip roll axis and an eccentric assembly external of the nip roll coupled to the nip roll coincident with the nip roll axis. The eccentric assembly is adapted to eccentrically move the nip roll. A method of varying the speed of a printed product in a printing press is also provided.

Abstract: A roll assembly, including a frame; a first component mounted to the frame and having a shaft, the shaft; a second component rotatably mounted to the frame and disposed in proximity with the first component, wherein at least one of the first component and the second component is translatable relative to the other; and a plurality of separator devices mounted on ends of the shaft of one of the first and second component.

Abstract: A media path crossover for a printing system includes a first crossover pathway on which sheets of print media are conveyed across a crossover junction without interruption and a second crossover pathway on which sheets of print media are conveyed across the crossover junction without interruption. The second crossover pathway intersects the first crossover pathway at a crossover junction. The first crossover pathway comprises a first input path and a first output path and the second crossover pathway comprises a second input path and a second output path. At least the first input path includes a first access panel, whereby a sheet can be cleared therefrom while continuing conveyance of media along the second crossover pathway.

Abstract: A depinching mechanism including a frame, a star wheel assembly, a transmitting device and a sensor is provided in present invention. Through the transmitting device rotating reversely, the star wheel assembly is lifted to the second position when paper jam occurs, thus depinched the media so that user can clear the paper jam. After that the star wheel assembly is lowered to the first position again. The star wheel assembly remains in the first position in normal printing process. Using a one-way clutch and a cam with an outer predetermined profile, the transmitting device rotates forwardly without transmitting any torque during normal printing process, and rotates inversely with transmitting a torque to lift the star wheel assembly up and lower the star wheel assembly down when paper jam occurs. Thus, the depinching mechanism can be used in printers to auto fix the paper jamming problems.

Abstract: A gaming machine printer. The gaming machine printer creates printed vouchers, tickets, receipts, etc. for use in gaming applications employing cashless enabled gaming systems. The gaming machine printer includes a voucher management system having a burster bar for separating vouchers and a serpentine voucher guide that may be opened for inspection. The gaming machine printer further includes various electrical features that protect the gaming machine printer from electrostatic discharges.

Abstract: Provided is a device for the alignment of sheets in a printing machine, said device comprising two pairs of rollers for the alignment of the sheets in their advance direction, for the alignment transverse to their advance direction and with respect to skewing, whereby each pair of rollers consists of a driving roller and of a counter-pressure roller. One drive unit is provided for each of the two driving rollers, whereby each of the drive units consists of a motor and a drive shaft linked therewith, whereby the driving rollers are non-torsionally accommodated on respective drive shafts. The driving rollers can be slid in linear direction on their drive shaft, or the respective drive shafts, and thus the driving rollers accommodated thereon, can be linearly shifted with respect to their drive motors.

Abstract: A roll assembly, including a frame; a first component mounted to the frame and having a shaft, the shaft; a second component rotatably mounted to the frame and disposed in proximity with the first component, wherein at least one of the first component and the second component is translatable relative to the other; and at least two separator devices mounted on ends of the shaft of one of the first and second component when in a first rotational position separate the first component and second component. Each separator device includes an aperture for mounting on a clutch that is mounted on the shaft of the first component and rotation of the second component in the first direction disengages the separation devices allowing the first and second components to touch and the separation devices to move to a second rotational position and rotation of the shaft in the first direction engages the clutch to rotate the separation devices back to the first rotational position.

Abstract: A feed input assembly for accepting and conveying sheet material of variable length along a feed path including a processing station for performing an operation on the sheet material and an ingestion assembly adapted to capture the sheet material between the opposed friction drive surfaces and accept a leading edge of the sheet material from the processing station at a point of entry. The ingestion assembly includes transport elements having positionable opposed friction drive surfaces which are adapted to vary point of entry along the feed path. By varying the point of entry, sheet material of variable length can be accepted without varying the position of the processing station relative to the ingestion assembly. Also, a method for operating a feed input assembly having positionable friction drive surfaces.

Abstract: An apparatus and method for transporting substrate media including a nip assembly having a drive wheel operably connected to a drive mechanism for rotating the drive wheel, and an idler member disposed adjacent the drive wheel. The idler wheel and drive wheel forming a nip. The drive wheel and idler wheel are displaceable from each other to form a nip gap therebetween. A nip force generator is operably connected to the nip assembly. The nip force generator develops a first nip force upon entry of the substrate media into the nip and formation of the nip gap and develops a second nip force subsequent to the first nip force. The second nip force is greater than the first nip force.

Abstract: In an embodiment of the invention, a detection unit arranged near a feed roller is rotatably arranged. A space where the feed roller is attached and detached is formed by rotating the detection unit. The detection unit is rotated in accordance with an operation of attaching and detaching the feed roller to and from a shaft, and the maintenance of the feed roller is performed while the formed space is used.

Abstract: A sheet transport system and method including a first drive module including a frame. A first drive wheel is rotatably disposed on the frame. A first drive motor is operably connected to the first drive wheel and disposed on the frame. The first drive module is pivotally secured to a structure. A first idler wheel corresponds to the first drive wheel. An actuator is operably engagable with the first drive module. The actuator is configured to move the first drive module to cause the first drive wheel to move between an open position and a closed position. The first drive wheel is configured to propel a sheet in the closed position and to not propel a sheet in the open position.

Abstract: An image printing apparatus includes a printing unit and a supporting member opposing the printing unit and having a supporting surface for supporting the printing medium. The image printing apparatus further includes a first pair of rollers disposed upstream of the printing unit, a second pair of rollers and a third pair of rollers which are disposed downstream of the printing unit. The image printing apparatus further includes a guide member disposed between the second pair of rollers and the third pair of rollers. The guide member includes a guide portion which guides the printing medium transported by the second pair of rollers. The guide member is configured to pivot between a slanting position and a laying position.

Abstract: A conveying device performs an appropriate initialization sequence at start of an operation thereof in response to a manipulation of a lever of a non-operational conveying mechanism thereof. The conveying device includes a pair of rollers configured to convey a sheet, a separating unit configured to separate one of the pair of rollers from another of the pair of rollers, a holding unit configured to retain a status representing whether a separation process is performed by the separating unit, a memory unit configured to store information representing a state of the conveying device at power-off, and a control unit configured to control the conveying device based on the status retained by the holding unit and the information stored by the memory unit.

Abstract: A feeder that stores a sheet used to form an image in an image forming apparatus main body and that is configured to be drawn out from the image forming apparatus main body in a perpendicular direction to a sheet conveying direction. The feeder includes: a separation member that is in press-contact with a sheet feed member disposed in the image forming apparatus main body for separating a stored sheet in cooperation with the sheet feed member; an arm part that is attached to the separation member, the separation member being rotatably attached through the arm part; and a rotation mechanism that rotates the separation member downward through the arm part and releases the press contact with the sheet feed member when the feeder is drawn out from the image forming apparatus main body.

Abstract: An energy storage apparatus has one or more camshafts, one or more cams connected to the camshaft, one or more followers contacting the cam, one or more biasing members connected to the follower, and one or more tracks connected to the follower. With embodiments herein the track limits movement of the follower to a constrained path intersecting the axis about which the camshaft rotates. Alternatively, the biasing member itself can limit the movement of the follower to this linear path. The biasing member can comprise any force member such as a spring, a piston, a flexible member, a compressible member, etc. that has the ability to bias the follower toward the axis of the camshaft. The embodiments herein store and transfer potential energy to reduce the total reflected torque on the motor.

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 moving unit includes first and second transportation paths that can selectively link to main transportation path of a recording sheet, a first roller arranged between the first and the second transportation paths, second and third rollers capable of making contact with the first roller across the first and the second transportation paths, respectively. When the moving unit moves to a position at which the first transportation path or the second transportation path is linked to the main transportation path, a mechanism varies a pressing force of the second roller or the third roller with respect to the first roller.

Abstract: A sheet conveyor includes a first roller and a second roller pressurized to the first roller to hold and convey a sheet, wherein when the sheet is held between the first roller and the second roller, the first roller and second roller are separated at a space equivalent to a thickness of the sheet. The sheet conveyor has a pressurizing delay mechanism configured to bring slowly the first roller and the second roller into contact with each other after the sheet is conveyed from the first roller and the second roller.

Abstract: A medium feeding device includes a feed roller pair, a transport roller, a medium guiding path section, and a controller. The feed roller pair includes a feed driving roller driven by power and a feed driven roller to be rotationally driven, and feeds a medium to be fed toward the downstream side in a feed direction. The feed driving roller and the feed driven roller are separated from each other. The transport roller pair transports the medium, which is fed by the feed roller pair, toward the downstream side in the feed direction. The transport roller pair includes a transport driving roller that is disposed on the downstream side of the feed roller pair in the feed direction and is driven by power and a transport driven roller that is rotationally driven.

Abstract: A sheet conveyance unit includes first and second conveyance rollers facing each other, a first stopper provided at an axial end portion of the first conveyance roller, projecting radially beyond a circumferential surface of the first conveyance roller, downstream rollers positioned downstream from the first and second conveyance rollers in a sheet conveyance direction, an engaging and disengaging unit to disengage the first and second conveyance rollers from each other, and a controller. The first stopper rotates to a contact position projecting into the sheet conveyance path and to a non-contact position away from the sheet conveyance path as the first conveyance roller rotates. The first stopper moves to the non-contact position after stopping a sheet. The first and second conveyance rollers are disengaged from each other after a leading end of the sheet reaches the downstream rollers, before the first stopper moves to the contact position.

Abstract: A method and apparatus for bi-directionally transporting sheet stock in a marking engine by disposing idler rolls on opposite sides of a drive roll on movable idler roll decks for forming forward and reverse nips and feeding sheets from opposite directions into the nips and providing for moving the idler rolls away from opposite sides of the drive roll for jam clearance.

Abstract: The present invention provides a sheet conveying apparatus and an image forming apparatus having the same, in which a jammed sheet can be easily viewed and easily removed. A sheet conveying apparatus of the present invention comprises a fixation guide portion fixed on an apparatus body; a first guide portion disposed to face the fixation guide portion; a second guide portion disposed to face the fixation guide portion, wherein the first guide portion and the second guide portion are arranged in a line along a sheet conveying direction and each of the first guide portion and the second guide portion is independently movable; a sheet conveying path formed by the fixation guide, the first guide portion and the second guide portion, and a movement mechanism that moves the second guide portion away from the fixation guide portion, when the first guide portion is moved to open the sheet conveying path.

Abstract: An apparatus and method for transporting substrate of media including a nip assembly having a drive wheel operably connected to a drive mechanism for rotating the drive wheel and an idler wheel disposed adjacent the drive wheel. The drive wheel and idler wheel forming a nip therebetween. The drive wheel and idler wheel being displaced from each other forming a nip gap, wherein the nip gap is present absent the presence of the substrate media in the nip.

Abstract: An automatic document feeder includes an outer casing, an upper cover, a first pressing roller set and a separating device. The first pressing roller set is installed in a receiving member, which is arranged at a terminal side of the outer casing. The first pressing roller set includes a first rotating shaft and a first pressing roller. The separating device is sheathed around the first rotating shaft and exposed outside the receiving member. When the upper cover is opened, the upper cover is contacted with the separating device, so that the separating device is moved to shift the first rotating shaft.

Abstract: A document handling apparatus is disclosed which is particularly well adapted for counting documents of value, such as banknotes. The document handling apparatus comprises an input module for receiving a stack of documents and feeding them one by one into the apparatus, a detector box which houses a series of detectors for detecting characteristics of the documents, a transport system for conveying documents within the apparatus, a doubles detector for sensing the passage of each document therethrough and a stacker module for stacking the output documents and presenting them to the user. The apparatus is based on a metal framework in a plastics housing.

Abstract: An apparatus for registering a sheet. The apparatus including a sheet registration nip assembly for changing a position and/or timing of the sheet. The apparatus also including a controller communicating a first signal to the sheet registration nip assembly to change a first sheet characteristic to a target characteristic. The first signal generated to impart the target characteristic to the sheet by the time the sheet reaches a preliminary datum. The preliminary datum disposed along the transport path between the sheet registration nip assembly and a delivery datum that is disposed downstream of the sheet registration nip assembly. The controller communicating a second signal to the sheet registration nip assembly to change a second sheet characteristic to the target characteristic. The second signal communicated when at least a portion of the sheet is disposed along the transport path between the preliminary datum and the delivery datum.

Abstract: A sheet conveyance apparatus includes a conveyance unit configured to convey a sheet and a pair of roller units, provided on a downstream of the conveyance unit in the conveyance direction, wherein the pair of roller units forms a plurality of nipping portions, arranged along a width direction orthogonal to the conveyance direction, a downstream end of the sheet to be conveyed is caused to abut against abutting positions of the plurality of nipping portion, and wherein the abutting position of the nipping portion nearer to a center in the width direction is positioned on a more downstream in the conveyance direction than the abutting position of the nipping portion at end side in the width direction.

Abstract: A supporting unit is mounted on a body of an image forming apparatus in a swingable manner around a swing fulcrum. A through shaft serves as the swing fulcrum, which is inserted into the supporting unit through the swing fulcrum so that both ends of the through shaft are supported by supporting members. The through shaft includes at least one of an operation member that is slidable on the through shaft in an axial direction and a biasing unit that biases a sliding force in one direction of the axial direction. When the supporting unit is opened with respect to the body, at least a part of a conveying path on which the recording medium is conveyed is exposed.

Abstract: A recording sheet transporting apparatus includes a first roller which transports a recording sheet, a first transmitting gear to which a drive force is transmitted from a drive source, a second roller which is movable in a radial direction with respect to the first roller, a second transmitting gear which is engaged with the first transmitting gear and which transmits the driving force to the second roller, a universal joint which connects an end portion of the second roller and one end portion of the second transmitting gear, a bearing member which has a cylindrical surface and rotatably supports the other end portion of the second transmitting gear by the cylindrical surface, and a supporting member which tiltably supports the bearing member in a movement direction of the second roller.

Abstract: A method and a device transport a flat object, especially a mail item, over a conveyor path. The transport device has two conveyor elements, a thickness sensor and a gap-altering device. With the aid of the thickness sensor the thickness of the object is measured, before the object reaches the conveyor path. With the aid of the gap-altering device the gap between the two conveyor elements is set to a computed value. The effect of this setting is that after the setting the gap is smaller than the measured thickness and the difference between the measured thickness and the gap is smaller than a predetermined limit. This setting is concluded before the subject matter reaches the conveyor path. The two conveyor elements clamp the object for a time between themselves and transport the clamped object over the conveyor path.

Abstract: A novel media path mechanism which utilizes the position and/or motion of buffer nips to deflect the leading and trailing edges of the sheets entering the buffer to enable the sheets to be reliably shingled in the buffer media path. The sheets are stored in properly collated order until needed for insertion into the print stream. By shingling or overlapping successive sheets in close relationship in a row within the buffer, this process can greatly increase the volume of storage or parking of sheets within the buffer. This can significantly reduce the size or footprint of the buffer within the printing system or significantly increase the capacity of an existing system.

Abstract: A printing apparatus includes a housing including a feeding tray and an ejecting tray, an image forming unit disposed in the housing, a drive motor disposed in the housing, and a driving device disposed in the housing and driven by the drive motor. The driving device is adapted to convey a sheet of paper from the feeding tray onto the ejecting tray, and includes first and second driving units. The first driving unit includes a sun gear rotatable about an axis, a planet carrier rotatable about the axis, and a planetary gear disposed rotatably on the planet carrier and meshing with the sun gear. The second driving unit includes a driven gear meshing with the planetary gear. The planet carrier is pivotable relative to the sun gear to remove the planetary gear from the driven gear.

Abstract: A sheet conveying apparatus comprising a pair of rollers configured to pinch a sheet to be conveyed, a driving source, a roller mechanism configured to change a clearance between the pair of rollers with a force generated by the driving source, and a manual mechanism including an operation member which a user manually moves and a transmission mechanism configured to transmit a manual force from the operation member to the roller mechanism to change the clearance between the pair of rollers, wherein the transmission mechanism is configured to cut off transmission of the force generated by the driving source to the operation member when the manual mechanism is in a default state.

Abstract: Methods and system for reducing sheet skew in a sheet transport system are disclosed. A sheet transport system may include an idler wheel, a drive wheel a drive motor and an actuator. The idler wheel may have a substantially rigid outer layer. The drive wheel may have a compliant outer layer and may correspond to the idler wheel. The drive motor may be operably connected to the drive wheel and may be configured to cause the drive wheel to rotate around a shaft. The actuator may be operably connected to the drive wheel and configured to cause the drive wheel to move between a closed position and an open position. The drive wheel is configured to contact a sheet in the closed position and to not contact a sheet in the open position.

Abstract: A transporting path configuration includes: a separating mechanism that separates from one of transporting members the other transporting member; an opening/closing transporting path member that is rotatably attached above the transporting members and has one surface that configures a first transporting path of the recording medium discharged from the transporting members; a transporting path member that forms a second transporting path between the transporting path member and the other surface of the opening/closing transporting path member in a state of covering the opening/closing transporting path member; a handle that is attached to the opening/closing transporting path member so as to be extended above the second transporting path and is further extended above a cover that covers a discharge member; and a moving mechanism that moves the handle in the direction away from the cover when the other transporting member is separated from the one transporting member by the separating mechanism.

Abstract: In an automatic feeder and an image acquiring apparatus, a cover is rotatably connected to a body through a first pin and openable and closable with respect to the body. A roller gear rotates a transporting roller to transport a sheet. An actuating member is attached to the first pin and driven by rotation of the first pin. A middle gear, displaceable by the actuating member, is selectively engaged with a power-output gear and the roller gear so as to transmit a power to the roller gear. An actuating member moves the middle gear to be engaged with the power-output gear and the roller gear when the cover is closed upon the body, and moves the middle gear to be disengaged from at least one of the power-output gear and roller gear when the cover is opened.

Abstract: A drive roll/idler roll nip release mechanism utilizes the motor used for the drive nip, coupled with one-way clutches, to power the nip release as a sheet is handed off to a downstream nip. A drive shaft is coupled to a first one-way clutch in one direction and an idler cam shaft is coupled to a second one-way clutch in the opposite direction. This allows the idler cam shaft to be driven only when the motor is reversed, and the drive shaft to be driven only when the motor is moving forward. The one-way clutch on the drive shaft allows the drive wheels to freewheel when the motor is reversed in order to engage the nip release. Thus, the nip release is activated while the drive nip continues to rotate in the direction of sheet motion.