Abstract: A sheet feeding device comprises a pick roller; a push-up board; a first friction member located in a position on the push-up board opposed to the pick roller with the sheet bundle interposed therebetween; and a second friction member located in a position on the push-up board upstream in a sheet transferring direction and not opposed to the pick roller. In the sheet feeding device, the second friction member has a most protruding part which protrudes to the sheet bundle more than a sheet bundle side surface of the first friction member, and a dynamic friction coefficient of the second friction member to the sheet is larger than that of the first friction member and smaller than that of the pick roller. Accordingly, double-paper feeding can be prevented and even the last one sheet can be fed regardless types of sheets.

Abstract: A media stocker includes a feeder plate configured to maintain a plurality of recording media in a stacked state thereon, a vertically elevating device configured to cantilever-support the feeder plate, and a guide member disposed vertically to face a free end of the feeder plate and configured to guide the recording media stacked on the feeder plate. And the media stocker includes a roller attached to the free end side of the feeder plate and rotatable around a horizontal shaft, the outer circumferential surface of the roller being in contact with the guide member at a position higher than the position of the uppermost support point of the feeder plate by the elevating device.

Abstract: A media feeder is provided, which includes: a raisable and lowerable hopper on which multiple media are stacked; an elevator moving the hopper to a raised or lowered position; a pick-up roller picking up an upper media stacked on the hopper by rotating while contacting the uppermost media when the hopper is at the raised position; a friction member disposed on the upper surface of the hopper, at a position facing the pick-up roller; and a projecting member disposed below the hopper. The hopper includes a window hole formed in the vicinity of the friction member. When the hopper is at the lowered position, the projecting member projects from the upper surface of the hoper through the window hole. Thus, when media are placed in the feeder, even the lowermost medium does not come into contact with the friction member, thereby facilitating the placement and positional adjustment of the media.

Abstract: A feeding device includes a feeding unit configured to be driven while being in contact with a recording sheet to feed the recording sheet, and a stacking unit configured to stack a plurality of the recording sheets and to press or release the stacked recording sheets to or from the feeding unit. Also, the feeding device includes a separating unit configured to separate the plurality of recording sheets fed by the feeding unit, one by one, a detecting unit configured to detect the recording sheet in an area downstream of the separating unit, and a control unit configured to control each of the units. The control unit switches a feeding operation between at least two feeding operations in accordance with a drive time of the feeding unit from when the feeding unit is started to be driven to when the detecting unit detects the recording sheet.

Abstract: An image forming apparatus including a sheet bundle boundary detecting unit which detects a boundary of sheet bundles added to a sheet storage case, and a control unit which controls a feeding condition of sheet feeding unit based on a detection result of the sheet bundle boundary detecting unit. With this, overlapping-feeding and misfeeding at the boundary between the sheet bundles are reliably prevented.

Abstract: A sheet feeding device includes a pick roller and a resilient element disposed above the pick roller. The pick roller has a roller surface. The resilient element includes two side resilient arms and a center resilient arm located between the two side resilient arms. Free ends of the two side resilient arms are pushed forward by all sheets when the sheets arrive between the free ends of the two side resilient arms and the roller surface. A free end of the center resilient arm faces the roller surface of the pick roller and maintains a gap therebetween. When too many pieces of paper are drawn forward to the resilient element, the side resilient arms are pushed forward further more, the uppermost paper contacts the center resilient arm. The center resilient arm cooperates with the side resilient arms to provide the paper a pressure big enough to be conveyed forward.

Abstract: A medium delivery device comprising a medium insertion section into which a sheet-shaped medium to be delivered is inserted in a stacked state, first and second medium guide surfaces that are opposed to each other to guide the sheet-shaped medium to the medium delivery port, a feed roller that is disposed at a side of the first medium guide surface and delivers the sheet-shaped medium inserted into the medium insertion section, to the medium delivery port, a first pressing member that presses the sheet-shaped medium inserted into the medium insertion section against the feed roller, a second pressing member that presses the sheet-shaped medium inserted into the medium insertion section against the first medium guide surface at a position deviating from the feed roller, and a driving mechanism that drives the first pressing member in directions in which the first pressing member moves close to and away from the feed roller.

Abstract: A method and apparatus for adjusting the height of a media stack in an image production device is disclosed. The method may include setting the height of the media stack using a default multiplier, determining if printing has started, wherein if it is determined that printing has started, measuring the thickness of media sheets in the media stack, counting the number of media sheets fed to an image production section of the image production device, determining if the media stack height is below a predetermined threshold using the one or more media stack height sensors, wherein the one or more media stack height sensors determine that the media stack height is below the predetermined threshold, calculating a next multiplier using the measured paper thickness and counted number of sheets fed, and setting the next media stack height using the calculated next multiplier.

Abstract: A sheet feeding apparatus has a liftable stacking member on which a sheet is stacked, a feeding member which feeds the sheet in abutment against the uppermost one of the sheets placed on the stacking member, the feeding member moving from a separation position to an abutment position, a driving portion which lifts the stacking member, a sensor to detect that an uppermost sheet is below a predetermined position, and a control portion configured to control the driving portion so as to lift the stacking member when a signal from the sensor is received in sequence a plurality of times, which the control portion receives from a sensor due to the feeding member moving from the separation position to the abutment position repeatedly, indicate that the uppermost one of the sheets placed on the stacking member is located below a predetermined position.

Abstract: A sheet feed mechanism includes a chassis for supporting a stack of sheets; a top sheet engaging member for engaging a top most sheet of the stack; a stack engaging structure, a first end of the stack engaging structure engaging the stack of sheets to bias a top most sheet of the stack of sheets against the top sheet engaging member, the stack engaging structure being supported from the chassis by a resilient member; a friction surface extending perpendicularly from a second end of the stack engaging structure opposite to the first end; a lock mechanism having a lock arm hingedly connected to the chassis, the lock mechanism including a biased contact foot for engaging the friction surface to retard a rectilinear movement of the stack engaging structure; and an actuator for engaging and disengaging the contact foot from the friction surface.

Abstract: A media delivery apparatus includes a media insertion portion and a media delivery port. A media guide surface is configured to guide media toward the delivery port. The feed roller is configured to feed the media toward the delivery port. The first pressing member is configured to press the media against the feed roller and the second pressing member is configured to press the media against the media guide surface. A driving mechanism is configured to drive the first pressing member. The first pressing member is moved from a waiting position and toward the feed roller and the second pressing member is moved from a retreating position to a side of the media guide surface interlockingly with the first pressing member. The second pressing member reaches a position at which the second pressing member presses the media against the media guide surface after the first pressing member reaches a position at which the first pressing member presses the media against the feed roller.

Abstract: Disclosed is a sheet feeding apparatus capable of easily changing an amount of conveyance of sheet materials without increasing the costs. A sheet feeding roller body is constructed of a cylindrical sheet feeding roller support member provided with a sheet feeding roller and a gear on both sides thereof. A support portion of a sheet feeding shaft is inserted with a gap through a through-hole of the sheet feeding roller body, whereby the sheet feeding roller is rotatably supported by the sheet feeding shaft. The sheet feeding shaft receives a driving force via a sheet feeding shaft gear and thus rotates. The sheet feeding roller of the sheet feeding roller body receives a driving force via the gear from an ASF control gear and thus rotates, whereby the sheet feeding shaft and the sheet feeding roller can be rotated with different numbers of rotations.

Abstract: A paper feeding apparatus is provided for use in an image forming apparatus. Such a paper feeding apparatus comprises a knock-up plate rotating upwardly and downwardly with a first end thereof provided as a hinge shaft, a driving motor and a paper feeding roller assembly to withdraw a single sheet of paper stacked on the knock-up plate by a driving a force from the driving motor, and further comprises a lift gear unit to upwardly rotate the knock-up plate by the driving force intermittently transmitted from the driving motor through a connecting means; a position sensor arranged to detect whether the sheets of paper stacked on the knock-up plate reaches a predetermined height proper to be fed to the paper feeding roller assembly; and a controller arranged to control the connecting means to be turned on and off based on a signal detected from the position sensor.

Abstract: A sheet in accordance with the present invention includes sheets as print mediums for a printer and a package member surrounding the sheets which have been stacked up. The sheet package is configured so that the sheets can be set in the printer together with the package member exposing part of the sheets. The package member is integrally provided with a flap part which can expose part of the sheets by being opened when the sheet package is set in the printer and cover the exposed part of the sheets by being closed when the sheet package is not used.

Abstract: An image reading apparatus for use in an image forming apparatus includes a document glass installed on an upper side of the image reading body on which a document is placed; an image reading sensor installed under the document glass for stopping after being transferred to a predetermined position or for reciprocating in a straight direction parallel to the document glass; a cover for opening and closing the upper surface of the document glass; an automatic document feeder (ADF) for feeding the document to the position to which the image reading sensor is fixed; a document discharging plate for discharging the document fed through the automatic document feeding unit; first and second guide members for guiding to allow the document fed through the automatic document feeding unit to be discharged to the document discharging plate, the first and second guide members being installed at a predetermined interval to expose the document toward the image reading sensor; and a guide film installed to cover the interval

Abstract: A sheet feeding method includes supporting a media stack on an elevator, initiating operation of a pick roll in conjunction with a top most sheet, sensing whether or not the pick roll is operating in conjunction with the top most sheet, and moving the elevator, in response to the pick roll not operating in conjunction with the top most sheet, to overcome occurrence of a media handling failure mode between the pick roll and the top most sheet. The elevator is lowered, in response to the pick roll rotating but the top most sheet not arriving at a sheet arrival sensor, to increase a normal force imposed on the top most sheet to overcome the occurrence of a ‘fails to feed’ failure mode. The elevator is raised, in response to the pick roll not rotating, to decrease the normal force imposed on the top most sheet to overcome the occurrence of a ‘pick roll stall’ failure mode.

Abstract: A sheet conveying device includes a tray having a bottom surface. The tray holds at least one sheet therein, and has a recess formed in the bottom surface. A rotating member moves between a first position and a second position. In the first position, the rotating member contacts a sheet held in the tray, and in the second position, the rotating member is separated from the tray. The rotating member selectively rotates to convey a sheet held in the tray in a when the rotating member is in the first position. An operative portion moves in and out of the recess in the bottom surface of the tray, and movement of the operative portion corresponds to a movement of the rotating member into the second position.

Abstract: A medium delivery apparatus, includes: a medium insertion portion; a medium delivery port; first and second medium guide surfaces; a feed roller; a first pressing member; a second pressing member; a rotating member; an urging member, configured to give an urging force acting in a first rotation direction to the rotating member to rotate the second pressing member toward the protruding position; an elastic member, configured to cause the second pressing member and the rotating member to abut against each other; and a stationary abutting portion, against which the rotating member abuts when the first pressing member is placed in the vicinity of the waiting position.

Abstract: The present invention provides a sheet conveying apparatus and an image forming apparatus which can obtain high operability and productivity when a tabbed sheet is conveyed. In the representative configuration thereof, a trailing edge regulation plate is abutted on tab portions of some of tabbed sheets stacked and supported on a tray to regulate the position of the tabbed sheet. Tab portion regulation portions of a tabbed sheet regulation unit provided at the upper end of the trailing edge regulation plate are abutted on the tab portion of the tabbed sheet formed in the position where the tab portion is not abutted on the regulation portion and regulate the position of the tabbed sheet. The tab portion regulation portions of the tabbed sheet regulation unit can be moved. The tab portion regulation portions are moved with the lifting of the tray when being abutted on the lifting tray.

Abstract: A sheet feeder (20) includes a tray (30) for receiving a recording sheet (P). A feed roller (41) is disposed above the tray (30) and feeds the sheet (P). A bottom plate (50) is at a downstream end of the tray (30) and moves up and down for pressingly contacting a leading end of the sheet (P) with the roller (41). A position changer (60) moves the bottom plate (50) between a first position (S1) where the bottom plate (50) contacts the roller (41), and a second position (S2) where the bottom plate (50) is spaced from the roller (41). An elevating mechanism (70) moves the bottom plate (50) set to the second position up and down each time the sheet (P) is fed and brings the leading end of the sheet (P) into contact with the roller (41) when the bottom plate (50) is moved.

Abstract: In a recording sheet feeder, a recording sheet tray moving mechanism moves a recording sheet tray between an upper position, at which an uppermost recording sheet of a plurality of recording sheets loaded on the recording sheet tray contacts a feed roller, and a lower position, at which the uppermost recording sheet separates from the feed roller. A first eccentric cam and a second eccentric cam rotate to press down the recording sheet tray. A driving force switch member drives the recording sheet tray moving mechanism when a driver rotates in a first direction, and rotates a feed roller driving shaft mounted with the feed roller when the driver rotates in a second direction.

Abstract: Reference images on the respective surfaces of a reference document transported on a transportation path are read out by a first image reading section and a second image reading section, respectively. As a result a first reference readout image and a second reference readout image are acquired. in accordance with the difference between the changes in the sub-scanning direction in the first reference readout image and the changes in the sub-scanning direction in the second reference readout image, the reading cycle of the first image reading section X1 and the reading cycle of the second image reading section X2 are set. This makes it possible to equalize the magnifications of the respective images on the front and back sides of the document, even if the speeds of the document at the times of passing through readout positions for the front and back sides change over time, on account of the wear of a transportation roller.

Abstract: A sheet feeding unit and an image forming apparatus having the same. The image forming apparatus includes a body and the sheet feeding unit to supply sheets into the body. The sheet feeding unit includes a sheet feeding cassette coupled to the body, a sheet lifting plate positioned in the sheet feeding cassette to stack sheets thereon, a pick-up device to feed the sheets piece by piece from the sheet feeding plate, and an adjustment unit to vary a sheet feeding force by which the sheets are fed from the sheet lifting plate. Accordingly, the sheets can be smoothly fed into the body without skewing through adjustment of a sheet feeding force of the pick-up device.

Abstract: A drive switching mechanism includes a transmission gear and a planetary gear configured to transmit a drive from an input gear to an output gear. The drive switching mechanism further includes a swinging member configured to hold the planetary gear such that the planetary gear can swing around the input gear, a retaining unit configured to retain the swinging member in a swing enabled or disabled state, and a releasing unit configured to disengage the planetary gear from the output gear and cause them to be spaced apart. The output gear includes a toothless part that does not engage with a gear section engaging with the transmission gear.

Abstract: A document conveying apparatus comprises an inlet channel for receiving at least one document. A drive member is positioned for engagement with at least one document in the channel and is operable to move at least one document from the channel. An elongated member is associated with the channel and is movable to a first position towards the drive member which biases the at least one document towards the drive member. One portion of the elongated member is movable to a second position away from the drive member so as to allow insertion of at least one additional document into the inlet channel. Another portion of the elongated member is movable towards the drive member to bias the at least one document in the inlet channel into engagement with the drive member when the one portion of the elongated member is moved to the second position.

Abstract: A compact, desktop document processor for use on a counter-top is provided. A low-profile document feeding machine includes a feeder, a hopper, at least one processing device, and an output pocket. The apparatus further includes a reversible motor including a shaft, a first one-way clutch, a second one-way clutch, a nudger device, and a jogging device. The nudger device is drivingly connected to the motor through the first one-way clutch such that driving the motor in a forward direction drives the nudger device to urge a document from a document stack in the hopper into the feeder. The jogging device is drivingly connected to the motor through the second one-way clutch such that driving the motor in a reverse direction drives the jogging device to align the documents in the document stack prior to feeding.

Abstract: To provide a paper feeding device that can stably feed a recording media of an angle bottomed envelope or the like with a non-uniform thickness in which defects such as feeding failure, oblique feeding, dog ears and paper jamming or the like are not generated, a paper feeding device of the present invention includes a bottom plate 41 that sends up a recording media stacked thereon to a paper feeding position, a feeding device 24 that feeds an uppermost piece of the recording media sent up to the paper feeding position in which an auxiliary member 50 with a curved surface is disposed at least within a width directional area occupied by the paper feeding device 24 and atop an upper surface of the bottom plate 41, a height from each point of the curved surface of the auxiliary member 50 to the bottom plate 41 is non-uniform.

Abstract: In the image reading and recording apparatus, a separating and feeding unit, a paper end detecting unit, a reading unit, a conveying unit, and a recording unit are arranged in this order from the upstream of the conveying direction. The separating and feeding unit has a switching unit for selectively switching between a separating function of separating the uppermost one of stacked sheets and a feeding function of feeding each separated sheet at a predetermined speed. After a sheet is separated, switching from the separating function to the feeding function is carried out before the paper end detecting unit detects the top end of the sheet.

Abstract: A slide restricting member for restricting detachment of a feed roller which is rotatably supported and which is detachably held in an axial direction is held at a lock release position for allowing the detachment of the feed roller by a rib of a sheet feeding frame, a projection of an auxiliary member, and a snap fit. When the feed roller is mounted on the sheet feeding frame, the slide restricting member positioned at the lock release position is moved to a lock position in conjunction with a mounting operation of the feed roller.

Abstract: An automatic document feeder includes a paper tray, a pick-up roller and a sheet-lifting mechanism. A plurality of sheets including a first sheet and a second sheet disposed above the first sheet is stored in the paper tray. The paper tray includes a bottom plate in contact with the first sheet, and a stopper for stopping leading edges of the first sheet and the second sheet. The pick-up roller, which is movable and rotatable, picks up the second sheet and enables the leading edge of the second sheet to pass over the stopper. The sheet-lifting mechanism disposed on the paper tray lifts up the leading edges of the second sheet and the first sheet from the bottom plate.

Abstract: An image forming apparatus includes an apparatus main body provided with an opening, an image forming unit attachable to and detachable from the apparatus main body via the opening, a cover supported pivotally on the apparatus main body so as to cover the opening, and a sheet feeding unit disposed below the opening. The sheet feeding unit includes a sheet storing portion that is supported pivotally on the apparatus main body for stacking sheets thereon, a sheet feeding roller that feeds a sheet toward inside the apparatus main body, and a housing that supports the sheet feeding roller thereon in a rotatable manner. The cover has a housing supporting portion that abuts on the housing from above the housing when the cover is in a closed state.

Abstract: A sheet feeding apparatus includes sheet accommodating means for accommodating a sheet, the sheet accommodating means being detachably mountable to the apparatus; feeding means for feeding the sheet from the sheet accommodating means; press-contact means for press-contacting the sheet in the sheet accommodating means to the feeding means; a guiding member for guiding the sheet accommodating means such that sheet accommodated in the sheet accommodating means is not contacted to the feeding means when the sheet accommodating means is mounted to the apparatus; moving means for moving the guiding member to bring the sheet into contact to the feeding means after the sheet accommodating means is mounted to the apparatus.

Abstract: A paper feeder of a printer 1 includes a manual feed tray 21, a paper feeder roller 23, and a flapper drive unit 25. The manual feed tray 21 has a flapper 33 which can move up and down in the paper stacking direction. The paper feeder roller 23 is located above the manual feed tray 21, and is able to feed the paper on the flapper 33. The flapper drive unit 25 can move the flapper 33 up and down in the paper stacking direction to contact the paper feeder roller 23 through the paper, and moves the flapper 33 up and down at least from the moment that the paper is placed in the manual feed tray 21 until the paper is fed by the paper feeder roller 23.

Abstract: A sheet feeder feeds a sheet to an image forming unit. The sheet feeder can include a supply tray that holds a stack of sheets, a separation element disposed at an end of the supply tray, and configured to contact and apply a resistive force to a sheet in the stack, and a separation roller disposed facing the separation element, and configured to rotate contact and apply a feeding force to an uppermost sheet in the stack. The sheet feeder may also include a pressing plate pivotally attached to the supply tray at an end remote from the separation element, and configured to move toward the separation element as a number of sheets in the stack decreases, and a pressure applying element that increases pressure of a contact surface between the separation element and the uppermost sheet in response to the pressing plate moving toward the separation element.

Abstract: An object of the present invention is to facilitate the inspection of a driving unit for a lifting mechanism for lifting up sheets stacked in a sheet cassette and the detachment thereof from a main body of an image forming apparatus. In order to accomplish this object, the driving unit is detachably mounted on a main frame at a position near a cassette insertion opening that is an insertion opening for the sheet cassette into a cassette accommodating space.

Abstract: A media feeder is provided, which includes: a raisable and lowerable hopper on which multiple media are stacked; an elevator moving the hopper to a raised or lowered position; a pick-up roller picking up an upper media stacked on the hopper by rotating while contacting the uppermost media when the hopper is at the raised position; a friction member disposed on the upper surface of the hopper, at a position facing the pick-up roller; and a projecting member disposed below the hopper. The hopper includes a window hole formed in the vicinity of the friction member. When the hopper is at the lowered position, the projecting member projects from the upper surface of the hoper through the window hole. Thus, when media are placed in the feeder, even the lowermost medium does not come into contact with the friction member, thereby facilitating the placement and positional adjustment of the media.

Abstract: An equipment (43) for storing in an orderly way banknotes (52) and/or papers and the like, for instance banknotes (52) for an automatic machine (39), provided for the formation of a stack (53). The equipment (43) comprises two spiral elements (81; 82) defining coils with respective axes (83; 84) directed in the sense of the stacking and terminal sections (86) adjacent to a stacking surface (77) at an end of the stack. The spiral elements (81; 82) are rotatable around the axes (83; 84) and are arranged for laterally receiving between the coils a leading portion of the entering banknote (52), moving the banknote (52), through the coils and in consequence of the rotation, on the stacking surface (77), and disengaging the banknote from the coils adjacent to the terminal section (86).

Abstract: In a recording material guiding device, a second guide member is comprised of a hopper swinging surface, an edge guide member including a second side end guide member, and a liftup preventing guide. The hopper swinging surface is engaged in an opening provided in a side surface of a reference end guide serving as a first guide member. The second guide member can be slid in a main scanning direction with respect to the reference end guide (first guide member). During recording, a gap can be formed between the second side end guide member and a side end of the recording paper by sliding the second side end guide member from a first position to a second position, so that frictional contact can be prevented at the side end of the recording paper on the second side end guide member side.

Abstract: A media handling system, comprising: a media pick means; a media holder that interacts with the media pick means; and a selectable, lockable, automatically movable media tray located substantially adjacent to the media holder, wherein the movable media tray is engageable/disengageable with the media pick means.

Abstract: In a banknote handling device, a banknote storage cassette is loaded along guide grooves in left and right side plates, whereby the bottom end of a bill press interlocks with protruding members of the banknote storage cassette, preventing the banknote storage cassette from exiting the guide grooves, and, by sliding a lid of the banknote storage cassette, accumulated banknotes which are stored therein are transferred to a mounting plate while a free-sliding plate member inside a storage space of the banknote storage cassette presses the accumulated banknotes downward, the accumulated banknotes being separated one by one and conveyed down a transport path by a kick-out roller, a feeding roller, and a separating roller.

Abstract: A compact sheet material feeding device with a small height is provided. The device includes a lower sheet material stacking unit, an upper sheet material stacking unit disposed above and movable relative to the lower sheet material stacking unit, a feeding mechanism swingable between a first position relatively near to the lower sheet material stacking unit and a second position away from the lower sheet material stacking unit, a holding member configured to hold the feeding mechanism at the second position, and a pressing plate configured to move sheet material stacked in the upper sheet material stacking unit toward the feeding mechanism so that the sheet material is pressed against the feeding mechanism.

Abstract: A method and an arrangement for feeding shingled media item includes a tray for supporting a stack of shingled media items. The tray has an exit area and each of the media items has a bottom edge. A feeder separates and feeds media items from the shingled stack of media items. The tray is connected to the feeder with a first and a second cavity formed at the exit area of the feed tray and the front of the feeder such that media items moved from the tray into the feeder are supported on a portion of the media item bottom edge. A rail structure is attached to the surface for supporting the media items bottom edge adjacent the media item exit area.

Abstract: A paper feeding apparatus includes a paper loading plate, a paper feeding section with a pick-up roller to pick up and to feed the papers loaded on the paper loading plate one by one, a lifter to lift the paper loading plate to a pick-up roller side of the paper feeding section, a position sensor unit to sense whether an uppermost one of the papers is positioned at a pick-up position, a paper quantity sensor unit to sense the quantity and/or weight of the papers loaded on the paper loading plate, and a controller to control a lift driving time period T of the lifter to drive the lifter from a time that the uppermost one of the papers is positioned at the pick-up position to a point of time where the lifter is stopped.

Abstract: A paper feeder includes a base, a roller adjacent to the base, a holder for holding a paper, and a torsional element. The holder has a pivot end and a movable end, wherein the pivot end is pivoted to the base. The torsional element is disposed at a position where the holder is pivoted to the base, and provides torsion to move the movable end of the holder to be pressed against the roller, such that a front edge of the paper is raised to be in contact with the roller. As the roller rotates, the paper is fed into a paper feed track by a frictional force.

Abstract: An image forming apparatus includes a medium supply device having a lift plate and a lift mechanism positioning the lift plate The image forming apparatus also has a pickup roller a feeding device including a feeder member feeding each medium supplied from the supply device, and a nip roller pressing the medium onto the feeder member, and a recording portion recording an image on the medium fed by the feeding devices, and a multiple supply preventer. The multiple supply preventer contacts a leading edge of the medium to be supplied by the supply device and a leading edge of at least one other recording medium, and the upper end of the preventer is located below a straight line extending from a point between the pickup roller and topmost medium, to a point between the feeder member and nip roller.

Abstract: A paper feeing cassette of an image forming apparatus includes a paper stacking plate on which a sheet of paper is stacked; a lift unit placed under the paper stacking plate, lifting by a rotating pivot, the rotating pivot being connected to a driving motor using a connection portion and rotated, and ascending the paper stacking plate; and a release unit separating the connection portion from the rotating pivot, disconnecting the driving motor from the rotating pivot, descending the paper stacking plate by its weight, and separating the sheet of paper from a pickup roller.

Abstract: An image generating apparatus capable of effectively suppressing double paper feeding and reducing the number of components is obtained. This image generating apparatus comprises a paper feed roller feeding papers, a push-up member pressing the papers against the paper feed roller and a control portion controlling driving of the paper feed roller and the push-up member. The control portion carries the papers in a paper feed direction by rotating the paper feed roller, thereafter carries the papers oppositely to the paper feed direction by a prescribed distance while lifting the push-up member, and thereafter lowers the push-up member.

Abstract: A sheet processing apparatus includes a first roller, a second roller configured to press the first roller to form a nip portion, a moving member opposite to the nip portion to move from a start position to an operation position approaching the nip portion, a pushing member supported on the moving member to press a sheet by an end thereof by movement of the moving member and push the sheet into the nip portion, and a third and fourth rollers positioned on both sides of the pushing member and supported on the moving member.

Abstract: An image forming apparatus having a paper pickup unit includes a power unit to drive a shaft of the paper pickup unit, wherein the paper pickup unit includes a pressing plate at which a recording medium, such as a sheet of paper, is stacked, a paper feed unit body to receive the pressing plate, a shaft rotatably mounted on a front end of the pressing plate, a pickup roller to rotatably engage the shaft to pick up the recording medium stacked on the pressing plate, and a guide cam installed at least one side of the shaft and having a shock absorbing part engaged with a guide part installed at the paper feed unit body.

Abstract: A device (10) for extracting and feeding sheets from two trays, comprising a first tray (20) to contain a first ream (21a) of sheets (21), a second tray (30) to contain a second ream (31a) of sheets (31), and a feeding member (50, 53, 53a, 53b) for extracting and feeding one sheet (21, 31) at a time from said first ream (21a) or from said second ream (31a), wherein the two trays (20, 30) are positioned one on top of the other on the same side of the feeding member (50), and the second tray (30), in an intermediate position between the first tray (20) and the feeding member (50), comprises a fixed wall (32, 32a, 32b), to support the second ream (31a), which is configured in order to define an opening or cooperation zone (41) between the first tray (20) and the feeding member (50), so that, when the second ream is not present in the second tray (30) the feeding member (50, 53, 53a) and the first ream (21a) are intended to cooperate in contact with each other, through said cooperation zone (41) in order to extra