Abstract: A sheet discharging apparatus includes a discharging portion configured to discharge a sheet, a supporting portion configured to support the sheet discharged by the discharging portion, a lifting portion configured to lift and lower the supporting portion, a transmissive sensor configured to output an output signal that changes in accordance with a position of an upper surface of the sheet supported by the supporting portion, a reflective sensor configured to output an output signal that changes in accordance with the position of the upper surface of the sheet supported by the supporting portion, and a controller configured to control the lifting portion and including a first determining portion configured to determine whether or not sheet detection by the transmissive sensor is possible and a second determining portion configured to determine whether or not sheet detection by the transmissive sensor is needed.

Abstract: A paper sheet accumulating device includes an accumulating part in which paper sheets are accumulated, an impeller that sends the paper sheets to the accumulating part, and a support mechanism that supports the impeller. The support mechanism includes a first rotation shaft that supports the impeller rotatable, a support member provided with the first rotation shaft, a second rotation shaft that supports the support member rotatable in a direction of the support member moving toward and away from the accumulating part, and a biasing member that biases the support member in a direction of the impeller moving toward the paper sheets accumulated in the accumulating part.

Abstract: Methods and systems of producing collectible cards are disclosed. An example method includes producing a first stack of cards including a first card type and a second card type from a single substrate sheet, separating the first stack of cards into a first sub-stack and a second sub-stack. The first sub-stack includes the first card type and the second sub-stack includes the second card type. The example method includes comparing a first top card of the first sub-stack to a first reference card and, based on the first top card being substantially similar to the first reference card, automatically transferring the first sub-stack to a first tray designated to receive the first card type.

Abstract: A paper stacking apparatus according to an embodiment of the present disclosure includes a stacking table, a first sensor, and a hardware processor. The stacking table includes an upper face on which papers are stacked, the stacking table being capable of being elevated and lowered by a drive mechanism. The first sensor is disposed at a first position and configured to detect the upper face of the stacking table or an upper face of stacked objects stacked on the stacking table. The hardware processor is coupled to the drive mechanism and the first sensor. The hardware processor is configured to determine that the stacking table is excessively elevated when an elapsed time after starting to detect the object by the first sensor is at least a first excessive-elevation determination value of time.

Abstract: A sheet stacker includes a sheet stacking member, a biasing force applier, an angle changer, and a biasing force change reducer. The sheet stacking member has an upstream portion in a sheet conveyance direction. The upstream portion is movable in a vertical direction. The biasing force applier is configured to bias the sheet stacking member upward. The angle changer is configured to change an angle of a sheet stacking face of the sheet stacking member, relative to a surface of a sheet conveyed through a sheet conveying portion. The biasing force change reducer is configured to restrain a change of a biasing force acting on the sheet stacking member, before and after a change of the angle of the sheet stacking member by the angle changer.

Abstract: An image reading apparatus includes a first supporting portion, a sheet conveyance portion, an image reading portion, a second supporting portion, and an illumination portion. The image reading portion is configured to read an image of the sheet conveyed by the sheet conveyance portion. The second supporting portion is disposed below the first supporting portion and configured to support the sheet whose image has been read. The illumination portion is disposed further on an outside than a sheet supporting region of the second supporting portion in a width direction perpendicular to a sheet discharge direction, configured to illuminate the second supporting portion, and provided such that a light emission direction of the illumination portion is directed to the sheet supporting region.

Abstract: An image reading apparatus includes a housing; an opening/closing member that is switchable between a first position in which it covers the housing and a second position in which it uncovers the housing via pivoting about a pivot shaft; a document table that carries a document and is covered or uncovered by the opening/closing member; and a reading part that reads the document mounted on the document table. A bearing that receives the pivot shaft of the opening/closing member has a guide portion that guides the pivot shaft toward the inside of the housing when the opening/closing member is pivoted from the first position to the second position.

Abstract: A sheet discharge device includes a discharge roller, a detection portion, and a detection position changing mechanism. The discharge roller is configured to discharge a sheet from a sheet discharge port toward a sheet discharge tray. The detection portion is configured to detect that a stack height of sheets on the sheet discharge tray has reached a predetermined detection position. The detection position changing mechanism is configured to change the detection position for the detection portion.

Abstract: A document feeder includes a lift plate, a storage section, and an operation display section. The lift plate lifts a document sheaf up to a feed position. The storage section stores a first travel amount. The first travel amount is a travel amount of the lift plate necessary for the lift plate to cause the document sheaf to arrive at the feed position in a situation in which the document sheaf has a maximum permitted thickness. When a second travel amount is less than the first travel amount, the operation display section informs that the number of the document sheets in the document sheaf exceeds a maximum sheet number. The second travel amount is a travel amount of the lift plate taken to cause the topmost part of the document sheaf to arrive at the feed position.

Abstract: An object of this invention is to provide a job processing method for a convenient printing system applicable not only to the office environment but also to the POD environment, a storage medium, a program, a printing system, and a printing apparatus. To accomplish this, according to a job processing method for a printing system in which print media detected by a multi feed detection unit for detecting occurrence of multi feed of overlapping print media can be used as print media necessary for a job to be processed by a printing apparatus, when multi feed occurs, the printing system can execute a recovery operation for an unprinted job without outputting multi-fed print media to a print medium discharge destination necessary for the unprinted job in the printing system.

Abstract: Even when descending of a sheet stacking unit is interrupted by an obstacle, sheet stacking operation is resumed in a range in which the sheet stacking unit is movable.

Abstract: A system is provided for shifting, according to an amount of stacked sheets that has been stacked in a sheet stacking device, a state of a power to be supplied to the sheet stacking device from a first power state to a second power state where power consumption is less than that in the second power state.

Abstract: A sheet stacking apparatus includes a lowering control unit, a determination unit, a notification unit, and a control unit. The lowering control unit lowers a discharge tray based on an amount of sheets discharged to the tray. The determination unit can determine that lowering of the discharge tray has been disabled before the discharge tray reaches a lower end position. The notification unit notifies removal of an object present below the discharge tray when it is determined that the lowering of the discharge tray has been disabled. The control unit executes control so as to raise the discharge tray in response to the determination that the lowering of the discharge tray has been disabled.

Abstract: A paper sheet stacking apparatus includes: a stacking tray on which paper sheets are stacked; a driving section to drive the stacking tray in up and down directions corresponding to a height of the paper sheets stacked; a paper-sheet upper surface detecting section to detect an upper-most surface of the paper sheets to be stacked onto the stacking tray; a position detecting section to detect a position of the stacking tray by using a plurality of sensors respectively disposed at different positions arranged in a vertical direction, along which the stacking tray moves up and down; and a control section that determines whether or not the stacking tray is currently in a full loaded condition, based on the position of the stacking tray.

Abstract: A translatable media height sensor assembly for measuring a media stack in an imaging forming device. The assembly includes a support and drive and insertion assemblies mounted thereon. Insertion assembly includes a translatable plunger having mounted thereon a sensor and a translatable probe. At a home position the sensor is actuated by a flag on the support placing sensor output in a first state. During measurement, drive assembly translates insertion assembly toward a media stack and the sensor output changes to a second state and a counter is started. The probe encounters the media stack and stops while plunger and sensor continue to translate with the probe engaging the sensor causing the sensor output to again change state and stop the counter. The insertion assembly retracts back to the home position where the flag actuates the sensor causing the sensor output to change state.

Abstract: An apparatus for marking indicia on a plate blank where plate blanks are successively presented from a load magazine and moved to a printing station where the indicia is marked thereon and produce a finished plate. The finished plate is then moved into a receiving magazine where it is added to a stack of previously finished plates in a predetermined order corresponding the order in which the finished plates are produced. Also provided herein as a load magazine for presenting and having dispensed therefrom successive single plate blanks at a load magazine opening and a receiving magazine for receiving and stacking finished plates in a predetermined order.

Abstract: An invented medium delivery apparatus includes: a delivery unit for delivering a conveyed medium; a medium stacking unit for stacking the medium delivered from the delivery unit; a detection unit disposed between the delivery unit and the medium stacking unit in a medium conveyance direction for detecting an amount of the medium delivered to the medium stacking unit; and a sensor for sensing a motion of the detection unit, wherein the detection unit has a detachable tip portion. The medium delivery apparatus can change the sheet number of media stacked on the medium stacking unit where the medium stacking unit is in a full status with the stacked media.

Abstract: An insertion system includes an enclosure supply device, an envelope supply device, an insertion device to insert an enclosure supplied from the enclosure supply device into the envelope supplied from the envelope supply device, a first input unit to input identification data of the enclosure inserted into the envelope in each of multiple insertion setting records, a second input unit to input identification data of the enclosure set in the enclosure container of the enclosure supply device, and a controller to determine whether the identification data of the enclosure to be inserted, input by the first input unit, matches the identification data of the enclosure set in the enclosure container, input by the second input unit, and to control supply of the envelope by the envelope supply device as well as supply of the enclosure by the enclosure supply device based on a result of the determination.

Abstract: A printing apparatus according to one aspect of this invention automatically discharges, of sheets remaining on a conveyance path when a sheet being conveyed jams, dischargeable sheets to one of a plurality of sheet retraction units. At this time, the printing apparatus detects the stacked state of sheets discharged to the sheet retraction unit. When the printing apparatus detects that the sheet retraction unit has become a predetermined state, it changes the discharge destination of sheets to be conveyed to the sheet retraction unit, thereby controlling not to further discharge a sheet to that sheet retraction unit. According to this control, when retracting sheets remaining on the conveyance path upon occurrence of a jam in the printing apparatus, occurrence of a new jam can be prevented.

Abstract: To provide a recording device enabling unencumbered movement of a stacker to a target position at which an amount of extension that corresponds to the length of a medium is reached, a printer is provided with a conveyance unit for conveying paper, a paper length determination unit for determining the length of the paper in the direction of conveyance of the paper, a recording unit for recording onto the paper being conveyed, one stacker for receiving the already-recorded paper, an electric motor for driving the stacker, and a controller for controlling the electric motor. The controller (in particular, a stacker control unit) controls the electric motor and controls the stacker to a position at which the amount of extension that corresponds to the length of the paper is reached.

Abstract: A finisher includes: a bundle discharge roller pair; a sheet stacking portion which has a lower stacking tray, an abutment member on which a sheet is abuttable, and a sheet stacking height detecting sensor detecting a height of the sheets on the abutment member side, the sheet stacking portion configured to stack the sheet while lowering the lower stacking tray in accordance with a detection result; tray paddles coming into contact with the discharged sheet in a direction from a top of the sheet, to bring the sheet into abutment on the abutment member; a stacking amount detecting portion detecting a stacking amount of the stacked sheet, and a finisher control portion performing control of reducing a relative distance between the tray paddles and the sheet stacked on the lower stacking tray at the time of transporting of the sheet along with increase in the stacking amount of the sheet.

Abstract: A recording apparatus includes a supply holding section that holds paper, which is supplied to a printing section, in an overlapping manner; a paper discharging roller that discharges the paper from the printing section; a discharge holding section that holds the paper, which are discharged from the paper discharging roller, in an overlapping manner, and is installed movably to the supply holding section, in an overlapping manner; and a moving unit that is moved to move the discharge holding section to the supply holding section so as to widen a difference of a height between the discharge holding section and the paper discharging roller according to a decrease of a holding amount of the paper in the supply holding section.

Abstract: A counter ejector of cardboard sheet box-making machine is disclosed. A front contact plate contacting cardboard sheets is movable in a feed direction. A spanker is disposed to face the front contact plate in the feed direction, and contacts the back edge portion of the cardboard sheet, aligning the sheet edge portions. Ledges separate cardboard sheets loaded between front contact plate and the spanker, forming a batch of a predetermined number of sheets. A transfer conveyor transfers batches in a transfer direction, which is the same direction as the feed direction. An elevator is furnished with a table, and carries batches from the height at which the front contact plate and the spanker are disposed to the height at which the transfer conveyor is disposed. The table is moved by the same amount and in the same movement direction as the movement of the front contact plate.

Abstract: A sheet eject device is provided for detecting whether a sheet eject tray is filled with ejected sheets. The sheet eject device includes an ejecting unit that ejects sheets onto the sheet eject tray; a counting unit that counts an accumulated eject number every time a sheet is ejected by the ejecting unit; a storing unit that stores a defined eject number threshold and a defined eject interval time; a fullness detecting unit that detects that the sheet eject tray is filled with ejected sheets when the accumulated eject number counted by the counting unit exceeds the defined eject number threshold; and a reset unit that resets the accumulated eject number counted by the counting unit when an eject interval time exceeds the defined eject interval time, the eject interval time extending from when one sheet is ejected until a next sheet is ejected by the ejecting unit.

Abstract: A sheet stacking apparatus includes a gripper configured to discharge a sheet, a plurality of stacker trays arranged in a row and configured to stack the discharged sheet, and a guiding unit configured to guide the discharged sheet to a predetermined position. The plurality of stacking trays are horizontally arranged so that a large number of sheets can be stacked without increasing the size of the sheet stacking apparatus.

Abstract: In a production, fax or printing system, collection stations are sometimes obscure to the user. This invention provides a first sensor connected to a light source that illuminates this collection station when a product or copy is present so that the presence of the product or copies to be collected is apparent to a user. A second sensor turns off the light source after a preset period of time so that the light doesn't stay on indefinitely.

Abstract: An image forming apparatus has a sheet stacking apparatus including a tray on which sheets are stacked, and an aligning member aligning the sheets stacked on the tray. The aligning member aligns sheets stacked, on a sheet previously stacked on the tray, with a displacement in an aligning direction of the aligning member with respect to the sheet previously stacked. An aligning operation of the aligning member is changed on the basis of whether or not the number of the sheets stacked on the sheets previously stacked is a predetermined number or less.

Abstract: The sheet processing system includes: an image forming unit forming an image on a sheet; a sheet stack unit that lowers along a moving route, as more sheets are stacked on the sheet stack unit, the sheets each having an image formed by the image forming unit and being transported through a first route; a processing unit provided in a housing, and applying processing to a sheet having an image formed by the image forming unit, the sheet being transported through a second route; a cover member provided so that a part of the housing is openable, partially reaching a position in the moving route when the part is opened, and allowing a user to operate the processing unit by opening the part; and a moving unit moving the sheet stack unit to a position where the sheet stack unit does not interfere with the cover member, upon abnormal transportation.

Abstract: A sheet stacking apparatus includes a gripper configured to discharge a sheet, a plurality of stacker trays arranged in a row and configured to stack the discharged sheet, and a guiding unit configured to guide the discharged sheet to a predetermined position. The plurality of stacking trays are horizontally arranged so that a large number of sheets can be stacked without increasing the size of the sheet stacking apparatus.

Abstract: A sheet stacking apparatus includes a stage, a driving unit to drive the stage, and a sheet detection device to detect that a sheet exists on the stage. Operation of the sheet stacking apparatus is controlled so that the stage descends in accordance with an amount of sheets to be stacked, and when a job executed in an image forming apparatus is completed, the stage automatically moves to a sheet removing position. The sheet stacking apparatus is controlled so that sheets of a mixing prohibition job are not stacked with sheets of another job, by detecting that a sheet of another job exists on the stage.

Abstract: A bottom surface of a stacking and accommodating portion is structured such as to be sloped to be lower in accordance with moving away from a paper carry-in side, and a push plate is controlled so as to be moved in a direction moving close to a carry-in port of the paper by detecting a stack paper width determined on the basis of a product of a stacked number count information of the papers and a thickness information per one paper, and the papers are accommodated.

Abstract: The invention provides an image forming apparatus an image forming portion for forming an image on a sheet, a stack portion for stacking a sheet, a discharge portion for discharging the sheet, on which an image is formed by the image forming portion, to the stack portion, a sheet detection portion for detecting a conveying condition of the sheet on which an image is formed, a fully stacked condition detection portion for detecting whether the sheets stacked in the stack portion are in a fully stacked condition, and a determining portion for determining an abnormal condition of the sheet in the stack portion, based, after the detection of a sheet passing by the sheet detection portion, on a result of detection by the fully stacked condition detection portion as to whether the sheets stacked in the stack portion are in a fully stacked condition.

Abstract: A device and method for unloading laminar elements from a roll and transferring stacks of such laminar elements, and to the roll used for the same. The method including unloading sheets from a roll with the aid of a barrier; receiving the sheets on a support, such as to form a growing stack; positioning a separator between two adjacent sheets in which the first sheet completes a finished stack on the support and the second sheet is held by the separator in order to begin a new stack; moving the support to an outlet support and pushing the finished stack with the aid of a push element in order to transfer same from the support to the outlet support; moving the support to the position of the separator and removing the separator in order to transfer the growing stack from the separator to the support. The invention also relates to the device used to implement the method.

Abstract: A bottom surface of a stacking and accommodating portion is structured such as to be sloped to be lower in accordance with moving away from a paper carry-in side, and a push plate is controlled so as to be moved in a direction moving close to a carry-in port of the paper by detecting a stack paper width determined on the basis of a product of a stacked number count information of the papers and a thickness information per one paper, and the papers are accommodated.

Abstract: A sheet stacking device includes a liftable/lowerable sheet stacking portion on which sheets to be ejected are stackable. The sheet stacking portion moves downward as an amount of stacked sheets increases. The sheet stacking device includes a movable member disposed below the sheet stacking portion with a space therebetween, and a detecting portion configured to output a signal in accordance with a position of the movable member. Ejection of the sheet to the sheet stacking portion is stopped on the basis of the signal output from the detecting portion in accordance with downward movement of the movable member.

Abstract: A mail stack unloading device for use in a mail stacker to unload a stack of mail pieces in the mail stacker. The mail stacker has a pair of stack supports, located at a small angle from a vertical line, for supporting the mail stack as the mail pieces enter the mail stacker along a stacking path when the stack supports are in a stacking position. The stacker also has a platform or tongue connected to the stack supports such that the platform is positioned beneath the mail stack below the stacking path. During unloading, the platform is caused to move upward beyond the stacking path in order to engage with the stack, allowing the stack to be lifted. Then the stack supports are caused to forward beyond the vertical line in order to tip the lifted stack into a container.

Abstract: The invention relates to an individual-sheet stacking apparatus including a frame, a support which is displaceably guided at the frame and which is fitted with a rest surface for the individual sheet stack and having a pressurizing spindle to alternatingly shift and release the support. The pressurizing spindle consists of a pressurizing shaft rotatably supported at the frame, two pressurizing spindle lateral elements affixed to the pressurizing shaft, and at least two glide shafts configured in a fixed or rotatable manner at the pressurizing spindle lateral elements, the glide shafts being fitted with glide rollers. A drive means drives the pressurizing spindle into rotation.

Abstract: An apparatus for handling mailpieces produced by a mailpiece insertion system, comprising at least one mailpiece stacking assembly and a combination support/conveyor deck. The mailpiece stacking assembly accepts a plurality of mailpieces, i.e., as they are created by a mailpiece insertion system, and aligns the mailpieces to define a mailpiece stack. The support/conveyor deck is operative to convey mailpiece containers along a mailpiece handling path and includes loading and transport sections. The loading section is, furthermore, adapted to alternately reposition each of the mailpiece containers from an in-plane position to an out-of-plane position relative to the mailpiece handling path. The in-plane position is operative to transport the mailpiece containers along the mailpiece handling path while the out-of-plane position is operative to spatially reposition each of the mailpiece containers for alignment with a side edge of the mailpiece stack.

Abstract: A bottom surface of a stacking and accommodating portion is structured such as to be sloped to be lower in accordance with moving away from a paper carry-in side, and a push plate is controlled so as to be moved in a direction moving close to a carry-in port of the paper by detecting a stack paper width determined on the basis of a product of a stacked number count information of the papers and a thickness information per one paper, and the papers are accommodated.

Abstract: A media stacker which can be inserted into a main body of a liquid ejecting apparatus and stack a discharged recording medium moves downward in an inclined direction to be located below a liquid ejecting portion and a discharge portion when the media stacker is being inserted and moves upward in the inclined direction to be located vicinity to a discharge slot when the media stacker is being extracted. A guide mechanism for guiding movement of the media stacker and a guide gear which is rotated while following to the guide mechanism are formed on both sides of the media stacker.

Abstract: A bottom surface of a stacking and accommodating portion is structured such as to be sloped to be lower in accordance with moving away from a paper carry-in side, and a push plate is controlled so as to be moved in a direction moving close to a carry-in port of the paper by detecting a stack paper width determined on the basis of a product of a stacked number count information of the papers and a thickness information per one paper, and the papers are accommodated.

Abstract: A device for receiving documents is described and in one example, a device for stacking media in a mail creation inserter system is described including at least one document support member (30), adapted to receive documents and to be moved along a longitudinal axis by its own weight, and an actuator member (32) for allowing said support to move, placed on the path of movement of the documents and adapted to move between a first or blocking position preventing longitudinal movement of said support and a second or released position allowing longitudinal displacement thereof, movement from the first position to the second position being triggered by the contact of at least one document (36) with said actuator member.

Abstract: A sheet feeder for feeding sheets one-at-a-time along a path having: a feeder/separator for engaging the sheets and feeding them one-at-a-time along the path whilst remaining sheets not being fed along the path are halted by the separator; and a clearance mechanism for engaging the remaining sheets and removing them from the separator region in a sheet clearance process.

Abstract: A stacking apparatus for stacking a plurality of flat articles on edge is provided that receives articles in an article receiver that includes a stop wall to receive the front edge of each article and stop horizontal motion of the article and a rotatable segmented roller for receiving the bottom edge of each article. The segmented roller is rotatable about a central axis of the cylinder and includes a planar surface, the planar surface receiving the bottom edge of each flat article when the planar surface is in a horizontal position. The segmented roller is rotatable from a stopped position wherein the planar surface is in the horizontal position to form a gap to receive the bottom edge of one article at a time to a rotating configuration wherein the cylindrical outer surface of the segmented roller drives the one article against a stacking conveyor bed.

Abstract: An accumulator apparatus for paper collations having an accumulation chamber for receiving sheet material, the chamber defined by a fixed guide on one side, a movable guide on the other side and a movable stop member at one end. Rollers are included for driving the sheet material against the stop member, and gates are provided for moving the movable guide between a first position in which it is spaced from the fixed guide by a gap sufficiently small to prevent buckling of the sheet material as it is driven by the rollers against the stop member, and a second position in which the movable guide is spaced away from the fixed guide for discharge of the sheet material from the chamber.

Abstract: The invention relates to a pile compartment for flat postal articles placed in an upright position, comprising a pile compartment bottom (7) and a pile compartment wall (6) perpendicular thereto. The postal articles (1) inside the pile compartment (5) rest against said pile compartment wall. The pile compartment also comprises a pile support (8), which holds the pile (11) and can be displaced along the pile compartment wall (6) in an approximately horizontal piling direction. At the end of the pile compartment (5), the pile support (8) can be lowered into the plane of the pile compartment bottom, and the pile compartment bottom (7) is provided, at least in part, with a profiled design. The pile support (8) is designed so that it meshes with the bottom profile via the pile support surface that, when raised, slides on the pile compartment bottom (7).

Abstract: The present invention relates to a method and a device for stacking flat mailings, in which the thickness of each individually conveyed mailing that is to be stacked is detected within a main control loop. The underfloor belt is displaced away from the stacking location by a distance that corresponds to the measured thickness minus a specific distance by means of a stack support for the arriving mailing. The stacking force is measured at different heights in the area of the stacking roll in a static correcting control loop and is re-regulated by moving the underfloor belt within set point values established for the allowed stacking force ranges once each mailing has reached the stop.

Abstract: A stream of successive sheets of paper, foil or the like is converted into a series of piles at a stacking station where successive sheets are caused to descend onto a pallet which is adjacent a monitoring device serving to transmit signals denoting the levels of successive uppermost sheets of a growing pile. Such signals are processed by a unit which controls one or more valves in a pneumatic elevator for the discharge end of the endless flexible conveyor which supplies successive sheets to the stacking station. The elevator ensures that the distance between the discharge end of the conveyor and the uppermost sheets of the growing pile remains within a preselected range. This contributes to the accuracy of stacking of sheets on their pallet.

Abstract: To provide an accumulating device 71 that is capable of securely accumulating sheets or the like P having dimensional differences on the basis of the rear ends in the taking-in direction thereof. The stopper 111a advances from upward to the advanced position between the tip end regulating wall 79 and the rear end regulating wall 80 and stops the tip ends in the taking-in direction of sheets or the like P to be taken in, whose length in the taking-in direction of sheets or the like P is shorter than the maximum length. The stopper 111a is supported movably in the vertical direction with respect to the advancing and retreating mechanism by which the stopper 111a is caused to advance and retreat between the advanced position and the retreated position, and presses sheets or the like P in the downward direction.

Abstract: A media storage bin including a floor and a pair of spaced apart walls specifically spaced to receive pieces of media and to retain the pieces of media in a stacked condition. A drop control flap is mounted to an individual one of the spaced walls for delaying the fall of a piece of media into the bin. This wall includes a top surface. A platform for supporting a stack of pieces of media is disposed in the bin, between the wall top surface and the floor. A helical spring is disposed between the platform and the floor for maintaining the top of the media stack at a predetermined distance from the wall top surface to provide thereby a constant fall distance between an individual one of the pieces of media and the wall top surface. This is accomplished in a manner whereby the spring rate enables the platform to drop the thickness of one piece of media for each piece of media added to the top of the stack.