Abstract: In a system of transporting sheets in an output path of a copier or printer to a sheet stacking area with opposing first and second sheet feeding rollers forming a sheet transporting nip engaging the leading edge of a sheet, while producing a relative orbital motion of the opposing rollers to progressively pivot the nip and thereby change the angular direction of motion of the leading edge of the sheet, plural mode selectable operation of this pivotal motion is provided. There is a selection between faceup and facedown stacking of the sheets by one selectable orbital motion of the nip. This selected orbital motion pivots the nip by greater than 90 degrees with the sheet's leading edge held in the nip, so that subsequently, the leading edge of the sheet is moving in a direction substantially different from the direction of motion of the leading edge when the leading edge first entered the nip, and the sheet is inverted.

Abstract: An original document feeder is provided with a first sheet path for guiding a document from stacker to below after inversion, a second sheet path branched from the first sheet path in a switchback fashion for guiding the sheet to a process position, and a third sheet path branched from the first sheet path in a switchback fashion for discharging the sheet, discharged from the process position, to a receiver after inversion.

Abstract: A printer produces single and double sided images in correct page order using identically oriented sheets. An imprinting path is provided with mechanisms for transferring an image to one side of the sheet. The printer also has a sheet side reversing path that communicates with the imprinting path, and an output path. The printer includes first and second direction reversing paths that communicate with the imprinting path, the first direction reversing path further communicating with the sheet-side reversing path and the second direction reversing path communicating with the output path. A path selection apparatus is operable, when the printer is to imprint a double-sided image, to direct a sheet initially to the first direction reversing path after an image has been imprinted on one side thereof, and to direct the sheet to a second path after a second image has been imprinted on a second side thereof, whereby the sheet is directed to the output path after the second imprinting operation.

Abstract: An intermediate film storage device for a section of photographic material of limited length comprises feed rolls, exit rolls, intermediate rolls which separate a first buffer from a second buffer, and a guiding device which guides the section of film from the feed rolls to the intermediate rolls. Such an intermediate film storage device serves to equalize different operating speeds of stations for processing photographic material. In so doing, the activity of the processing stations connected in series ahead of the intermediate film storage device should have to be interrupted only for a short time as the intermediate film storage device is being emptied. The intermediate rolls wind the section of film into the first buffer, and rewind it into the second buffer in the opposite direction of motion and at a higher speed, the motion of the section of film in the second buffer being controlled by an arrangement of buffer rolls.

Abstract: A paper conveyor for conveying paper includes a conveyor roll for conveying paper, a drive motor for driving and rotating the conveyor roll, a rotary follower roll for pressing onto the conveyor roll and for holding a paper and a convey direction switch mechanism for switching the conveying direction of the paper. The paper is conveyed in a predetermined direction by the conveyor roll and the rotary follower roll. When the conveying direction of the paper is changed to an opposite direction, the convey direction switch mechanism is adapted to control the follower roll so that the follower roll can be rocked from one direction to another with its axis of rocking coinciding with an axis of the conveyor roll. Therefore, the conveying direction of the paper can be changed very smoothly.

Abstract: Disclosed herein is a device for feeding sheets one by one. This device basically comprises a suction pad moved toward stacked sheets so as to attract an uppermost sheet of the stacked sheets thereto, a drum rotatable in both forward and reverse directions, a first belt-type conveying system disposed on one part of the surface of the drum, a second belt-type conveying system disposed on another part of the surface of the drum, a sheet insertion port defined by the drum and the first belt-type conveying system, and a sheet withdrawal port defined by the drum and the second belt-type conveying system. The device is also characterized in that the suction pad is displaced to face the sheet insertion port so as to interpose the uppermost sheet between the drum and the first belt-type conveying system, followed by transfer toward the second belt-type conveying system, and the uppermost sheet is reversed by the drum and the second belt-type conveying system so as to be discharged from the sheet withdrawal port.

Abstract: A document feeding device for feeding documents to a document scanning section where the image of the document is scanned. The document feeding device has first trasnport rollers for feeding each document to the scanning section, discharge rollers for discharging from the scanning section the document thus supplied, a reversing transport path for passing and turning over the document sent from the discharge rollers, and second transport rollers for feeding the document that has been turned over through the reversing transport path to the document reading section. The reversing transport path is designed to change the length of the document transport path depending on the size of the document. With the arrangement, reversing operation and scanning operation of the documents can be performed effectively.

Abstract: A reading device includes an inlet port for a boarding pass, a reading section for reading data recorded on part of the boarding pass, and a feeding section for transporting a boarding pass from the inlet port to the reading section. The reading device further includes a rotating section for holding a boarding pass fed thereto and rotating together with the boarding pass, and a control circuit for checking the orientation of the boarding pass inserted into the inlet port, and instructing the feeding section to temporarily feed the boarding pass to the rotating section and instructing said rotating section to turn over the boarding pass when it is detected that the boarding pass has been inserted in a particular incorrect orientation.

Abstract: A central roller (70) is driven into constant motion by a toothed belt (85) and by drive rollers (88, 89.) A moving element comprising a bracket (92) bearing an idle roller (90) that is elastically biased toward the central roller is mounted on the shaft (7) of the central roller, and this assembly is separately driven by the rollers (78, 79), by a toothed belt (75) and a drive system (MC, 77). An entering bill is inserted between the rollers (70) and (90). The shaft of the roller (90) remains stationary until the bill has moved passed it in a predetermined manner. Thereafter, the moving element (92) driven into rotation at a controlled angular speed exceeding that of the roller(70), whereby the bill shall be constantly held between the central roller (70) and the idle roller (90) while this same idle roller (90) however moves toward the end of the bill until releasing it into a bin.

Abstract: A system and method for pressure sealing business forms provide for maximum utilization of floor space and ease of control by an operator. First and second pressure sealing devices, each having upper and lower sets of rollers forming nips for sealing business forms only along strips of pressure sensitive adhesive, are mounted one above the other. A common drive is provided for the drive rollers of each set, for each sealing device. Tape conveyors assist in conveying the forms through the first sealer, around a horizontal axis large diameter drum, and from the large diameter drum through a second sealer, the forms moving in the opposite direction to the one they moved in through the first sealer when going through the second sealer. A rotator is provided between the drum and the second sealer for changing the orientation of the forms about 90.degree.. The forms are fed to the first sealer by an infeed conveyor/deshingler, and are removed from the second sealer by an outfeed conveyor/stacker.

Abstract: Apparatus for automatically inverting workpieces of limp sheet material, such as fabric sheet material, including an endless primary conveyor having a forward-traveling reach for conveying workpieces in a forward direction, each workpiece having a leading edge and a trailing edge. A gripper engages a portion of the workpiece generally adjacent its leading edge as the workpiece travels on the primary conveyor and holds the leading edge portion stationary. The primary conveyor includes a series of flights spaced at intervals therealong with openings between the flights. The trailing edge of the workpiece and the adjacent trailing edge portion drop through an opening between a leading flight and a trailing flight after the gripper engages and holds stationary the leading edge portion. A pushing mechanism acts on the trailing edge portion of the workpiece for pushing the trailing edge portion forardly to invert the trailing edge portion as the leading edge portion is held stationary by the gripper.

Abstract: A ticket processing system in which a single ticket drive cylinder drives a ticket on a circular ticket guide path past stations for visibly printing and for magnetically encoding or bar encoding the ticket. A passive ticket inverter adjacent the circular ticket guide receives a ticket and guides a first end of the ticket into an inverting space while the drive cylinder rotates the second end of the ticket past the first end and draws the ticket, second end first and inverted, back into the circular ticket guide.

Abstract: A copy sheet discharge apparatus for copying machines comprises a copy sheet guide plate fixed to the side of a cover and a copy sheet holding tray displaced below the sheet guide plate. With respect to this discharge apparatus, the image-bearing faces of copy sheets keep facing upwards while the copy sheets are delivered to the tray and the sheets are stacked into piles in the tray in the completed inversed state with the image-bearing face downwards, whereby the immediate checkup of the copy grade before being stacked in the tray is permitted and the cumbersome rearrangement of the order of the copy sheets after being removed from the tray is not needed.

Abstract: A switch is located near a pair of register rollers for feeding a document sheet toward a platen glass. A pair of document-feeding rollers are located near a platen glass. When the switch detects the rear edge of the document sheet being fed by the register rollers, it generates a signal. Upon receipt of this signal, the document-feeding rollers rotate, thus feeding the sheet for a prescribed distance and placing it at a predetermined position on the platen glass. The image on the sheet, thus positioned, is copied. An upper roller and a lower roller contacting each other are arranged at the exit side of the register rollers. The document sheets are braked as they pass, one after another, through the gap between the upper and lower rollers and are fed at the same speed, thus reducing their speeds to one and the same speed in spite of their different inertias.

Abstract: An image forming apparatus having a plurality of image forming units and a sheet transporting unit for transporting sheets discharged from an arbitrary one of the image forming units to a discharge portion of its own or to that of other image forming unit. When one of the image forming units is incapable of continuous operation during the execution of an operation thereof, another image forming unit is operated in place thereof which feeds recording sheets of the same size as those of the former image forming unit and forms images with toner of the same color as that of the former image forming unit, and the image bearing sheets discharged from the latter image forming unit are discharged onto the same discharge portion as that of the former image forming unit.

Abstract: A trail edge transport belt is provided over the elevator platform which receives sheets from a disk stacker. The trail edge transport belt engages and ensures the proper inversion of sheets moved by the rotating disk regardless of the size and weight of the sheet. To ensure that long, light weight sheets do not collapse on themselves prior to inverting, the trail edge transport belt is rotated at a velocity which is greater than the velocity which the sheets are fed to the disk and/or is arranged at an angle to the elevator platform so that a distance between the transport belt and the elevator platform decreases as the transport belt extends away from the rotatable disk.

Abstract: A thrusting mechanism with a thrusting member (5) which is moved periodically with an acceleration relative to the conveying speed out of a starting position into an end position and back into the starting position by a drive arrangement is provided on the conveying track (1) along a turning zone. Installed downstream of the starting position are an upward-curved ramp (8) and, at a distance downstream of the latter, a further upward-curved guide track (9) for the objects (2a, 2b, 2c) arriving on the conveying track (1) and moved by pushers (3). The whole arrangement is such that an object can be taken over in the turning zone by the thrusting member (5) and pushed upwards with an acceleration on the ramp (8) and the guide track (9) until it tilts backwards beyond its upright position and, after the return motion of the thrusting member (5) out of its end position, falls back turned onto the conveying track (1).

Abstract: The present invention discloses a transport device for transporting a recording medium comprising an inlet channel formed by a first guide member, a switching channel formed by a second guide member and communicating with said inlet channel, an outlet channel formed by a third guide member and connected to the junction of the inlet channel and said switching channel, transport member located at the upstream of the junction of the inlet channel and the switching channel with respect to a recording medium transport direction for transporting the recording medium through the inlet channel into the switching channel and reverse member located at the junction of the inlet channel, the switching channel and the outlet channel for backwardly transporting the recording medium into the outlet channel as released from the transport member after the recording medium is transported into the switching channel.

Abstract: The invention includes a sheet feeding apparatus having a sheet pocket with a first end and a second end, rollers spaced a predetermined distance from the first end and including a plurality of sheet-feeder nips, one of the nips being an inlet nip for directing a sheet into the first end of the sheet pocket, and at least one other of the nips being an exit nip for directing a sheet out of the first end of the sheet pocket, and bypass rollers for selectively permitting a sheet to exit the sheet pocket via the second end thereof.

Abstract: In the document feeder of the invention, the originals stacked in the document hopper always show the same surfaces upward during copy operation. Consequently, when an original document sheet causes paper jam or similar trouble in the transport path, the original may be restacked in the document hopper with the same surface facing upward as that facing upward when the original was first stacked in the document hopper. Consequently an operator is less likely to be confused as to the surface to face upward when stacking originals in the document hopper, resulting in improved operating performance. Further, the structure of installing the original feeding mechanism and the original restacking mechanism separately on both sides of the document hopper and bottom-feed, top-restack configuration of the document hopper simplifies the structure around the document hopper.

Abstract: An automatic document conveying device for an image-processing machine including a housing having on its upper surface a transparent plate on which to place a document to be processed. This device comprises an opening-closing frame member mounted on the housing so that it is free to pivot about a pivot axis extending along the rear edge of the transparent plate between a closed position at which it covers the transparent plate and an open position at which it exposes the transparent plate to view; a stationary frame member to be mounted on the housing adjacent to the upstream end of the transparent plate; a document table disposed on the stationary frame member; a document sending unit for sending a plurality of sheet-like documents placed on the document table to a document carrying-in passage one by one; and a document carrying-in unit for introducing the sheet-like documents sent to the document carrying-in passage toward the transparent plate.

Abstract: A high-speed, multi-pocket "small footprint" document sort machine having a large number of sort pockets configured to occupy a relatively small floor space. The pockets are arranged in multiple, horizontal tiers which are vertically spaced with respect to each other.

Abstract: A method and apparatus for stacking cut sheets of printed media wherein the leading edge of sheets received from a printer or plotter are first passed vertically downward into a bin and then rotated through an angle away from the printer or plotter. The front side member of the bin has a convex, upwardly facing and smoothly contoured section thereof over which cut sheets are laid with a uniform weight distribution and then down into an adjacent sheet output collection tray. This method of sheet transport and stacking has the advantage of minimizing the crumpling and curling of the cut sheets during the sheet handling and accumulation process. In addition, this method rapidly and efficiently moves the cut sheets out of the way of upstream sheet feeding to thereby prevents paper jam and crushing of paper in the plotter or printer.

Abstract: Folded products, supplied in dual-comb like interdigited form are transported by a transport chain system (75) carrying grippers (84, 85) in a vertical direction to form a vertical stack. Grippers engage alternate products about their fold line, and hold the interdigited intermediate sheets therebetween. The transport system and a carrier structure are placed in relative positions to permit the grippers of the transport system to pick up the products (1, 2) at the fold line and, after reorienting the products, to place them in a vertical stack on a support (96, 110), a cam track (88) opening the grippers on the transport system (75) as the grippers pass about a vertically movable deflection wheel (97) to release the products. The deflection wheel moves upwardly as the stack grows.

Abstract: An apparatus is disclosed for selectively inverting flexible and limp planar workpieces such as fabric. The apparatus includes a primary workpiece propeller having a cylindrical means for contacting the workpiece about a central rotating axis. A slot of sufficient size to receive the workpiece is positioned in a substantially vertical orientation beneath the primary propeller. The slot preferably has a flared upper end positioned directly beneath and in contact or near contact with the propeller. The fabric is drawn into the slot by the rotation of the propeller and follows the contour of the flared open end of the slot. The fabric enters into the slot until the trailing edge of the fabric is in contact with the primary propeller. The trailing edge of the fabric is drawn by the propeller to the opposite side of the flared opening of the slot and is subsequently pulled out of the slot. Collisions are prevented between workpieces by a control circuit that instructs the workpieces when to leave the apparatus.

Abstract: An improved document feeder for feeding a predetermined number of singulated checks in seriatim for accumulation into a check stack package, for delivering the package to further handling device, and for realigning the checks therein while the package is being delivered. The feeder comprises a singulator; a feeder section that feeds the singulated checks via a spider wheel to an accumulator bin for accumulation into a check stack package; and reciprocating kicker arms for realigning the accumulated check stack package and for delivering the check stack package to further handling devices. The reciprocating kicker arms the accumulated check stack package by engaging trailing edges of the checks in the check stack package and kicking the package into engagement between driven nip wheels. The kicker arms and the driven nip wheels deliver the check stack package.

Abstract: A sheet refeeding apparatus which comprises a belt laid between a first and a second shafts, wherein as the belt is wound around the first shaft, copy sheets ejected from a copying machine are wound around the first shaft together with the belt, and as the belt is wound around the second shaft, the sheets wound around the first shaft are fed out thereof back to the copying machine. In collecting sheets, the first shaft is rotated in the same direction as that of the rotation of a photosensitive drum, and a sheet turn-over section is disposed upstream of the belt with respect to sheet conveying direction. Marks are provided for the belt to recognize the position of the belt. An initial position mark is given to the belt, and the mark functions as a standard for a return of the belt to the initial position on a supply of power for the apparatus or on the completion of a sheet refeeding operation.

Abstract: A recycling automatic document feeder for a copier which feeds a stack of documents loaded on a document table one by one to a predetermined exposing position, returning the document to the top of the stack after imagewise exposure, and refeeding such documents one by one to the exposing position. A discharge section is movable on and along the table in an intended direction of document feed. The document feeder is capable of returning documents of various sides easily to the top of the document stack which is located at a document feed position on the table.

Abstract: The invention relates to an oscillating device to be mounted at an automatic sheet output in order to turn over sheets one by one. The device includes a wire designed with two mounting end tabs pivoting on the output, two approximately "S"-shaped lateral sections and an approximately "U"-shaped medial section wherein the extremities of the "U"-shaped section are connected to the respective extremities of the lower loops of the "S"-shaped sections.

Abstract: A mechanism for preventing the skew of a cut paper sheet, for use in a duplex printing machine or a paper reversing mechanism having a switchback mechanism for switching the cut sheet backward from its trailing end by reverse rollers and so on immediately after the cut sheet subjected to the printing at a printing portion is once discharged onto a reverse plate by paper discharge rollers and so on, the mechanism comprising: a plurality of paper guides formed on a surface of the reverse plate of the switchback mechanism so as to limit the lateral movement of the cut sheets of several kinds in the direction of the width thereof, the paper guides being arranged in a manner to correspond respectively to the widths of the cut sheets of several kinds to be discharged onto the reverse plate, the distance between each two paper guides for guiding a respective one of the cut sheets being slightly greater than the width of the corresponding cut sheet, and the paper guide for guiding the wider cut sheet being higher tha

Abstract: A sheet inverting apparatus includes an inverting rotary member with a sheet clamping hole which clamps and inverts the sheet and is arranged orthogonal to a sheet carrying route of the apparatus.

Abstract: An original document feeder which is so arranged that directions indicated by front and reverse surfaces of the original documents stacked in an original document accommodating section remain the same as the directions of front and reverse surfaces of the original documents initially accommodated in the accommodating section at all times during the copying operation, while constructions around the original document accommodating section can be simplified for efficient operation.

Abstract: An electrostatographic apparatus for producing fused toner images on receiver sheets includes a heated fusing apparatus and a combination mechanism for cooling as well as turning over receiver sheets coming from the fusing apparatus. The combination mechanism includes an internally cooled drum that forms a sheet-transport nip with a roller driven belt, and a sheet turnover chamber with an externally mounted shroud.

Abstract: An image forming apparatus selectively loaded with a two-side unit and a paper cassette storing a stack paper sheets and selectively operable in a two-sided copy mode and a combined copy mode. The body of the apparatus incorporates at least an image forming section, an image fixing section, a paper transporting section, and a paper discharging section therein. An accommodating section is provided in a lower portion of the apparatus body for selectively accommodating either one of the two-side unit and paper cassette. The accommodating section has a bore open at a particular side where the apparatus is to be operated, and a guide potion for guiding the two-side unit and paper cassette. The two-side unit and paper cassette have the same external configuration.

Abstract: A paper ejecting device for ejecting a recording cut sheet cut of a recording apparatus is disclosed. The paper ejecting device includes an ejector for ejecting the recording cut sheet through an outlet which is provided at a portion of the recording apparatus, a tray disposed adjacent to the ejector for receiving and recording cut sheet which has been ejected through the outlet by the ejector, and a sheet reversing member operable between a first position for guiding and reversing the recording cut sheet ejected through the outlet before the sheet falls onto the tray, and a second position for permitting the recording cut sheet ejected through the outlet to be received on the tray, without a reversal of the cut sheet.

Abstract: A high-speed sheet inverter mechanism includes a sheet confinement chamber suitable for confining a first sheet and a second sheet at the same time, and three roll assemblies for feeding sheets into, and discharging sheets from, the chamber. The sheet inverter device further includes a simultaneous sheet handling approach angle of about 48.degree. at which a sheet entering the mechanism contacts a sheet exiting the mechanism.

Abstract: An apparatus for feeding originals from a stack thereof provided in a cassette to an exposure platen within an exposure zone of a copying machine and returning the originals from the exposure zone to the stack, either via a discharge path extending from a feed side of the exposure platen to the stack for returning simplex originals without reversal, via discharge path extending from the discharge side of the exposure platen to the stack for directly returning duplex originals to the stack with reversal, or via a reversing path which combines both of these two discharge paths for returning duplex originals to the exposure platen with reversal and then to the stack. The reversing path includes a reversible conveyor member disposed at a common portion of the two discharge paths just before the stack of originals in the copy machine cassette.

Abstract: A recirculating document feeder for use with an electrostatographic apparatus for producing precollated or post-collated simplex or duplex copies from simplex or duplex original documents with a transport arrangement which simplifies operational control over the feeder and reduces the potential of damage to the original document sheets. The document feeder comprises a hopper for holding a stack of original document sheets. A transport mechanism is provided for respectively transporting an original document sheet along a path in which such sheet is removed in one direction from the stack hopper and delivered in such direction to an exposure station; or a path in which such sheet is removed in a direction opposite to the one direction from the stack hopper, turned over, and delivered to the exposure station. The transport mechanism is selectively controlled to carry out delivery of document sheets depending upon whether the original documents in the stack hopper are simplex or duplex.

Abstract: A paper path for guiding and transporting sheets of paper in an image former such as a printer or a photocopier which forms an image on both sides of the sheet of paper. The paper path has three channels: an image forming channel, a paper discharging channel, and a paper reversing channel. At the point where all three channels merge, a paper gate is provided for both guiding sheets of paper and signaling the presence of paper at the point where the three channels merge. The top surface of a paper tray containing unused sheets of paper is part of the paper reversing channel. When paper passes over the top surface of the paper tray, a roller momentarily stops the motion of the paper to prevent skew. A claw connected to the paper tray separates paper with an image formed on one side from paper in the tray. Guides provided over the claw prevent paper jams.

Abstract: An automatic printing machine for producing successive duplex prints forms an image on a first side of successive print substrates, transports successive substrates having images on a first side through the machine to form images on the opposite side of the substrate.

Abstract: A document orientation mechanism is disclosed for reversing the orientation of individual documents delivered from stacks of multiple documents while maintaining a predetermined directional document stream. A predetermined directional stream of documents is fed laterally into the mechanism from an outside source. Inside the mechanism, the documents are removed in a first direction along a first portion of a moving belt, then transferred by a guide to a second portion of the moving belt which is moving in a direction opposite to the first direction, the outer face of the documents being thereby reversed. The documents are then propelled by a third portion of the moving belt out of the laterally disposed mechanism and back into the original predetermined directional document stream.

Abstract: An automatic printing machine which forms an image on a sheet substrate has a multi-mode sheet output station in the form of a brush decision gate having a bidirectionally rotatable cylindrical fibrous brush to direct sheets upwardly over the top of the brush in a first sheet transport path when rotated in a counter clockwise direction and downwardly under the bottom of the brush in a second sheet transport path when rotated in a clockwise direction, the brush being selectively rotated in a clockwise and counter clockwise direction.

Abstract: Apparatus for handling workpieces of limp sheet material including an endless conveyor having a forward-traveling upper reach for conveying workpieces in a forward direction, each workpiece having a leading edge and a trailing edge. An airfoil extends transversely across the upper reach of the conveyor and a manifold rearward of the airfoil may deliver a jet of air in a generally forward direction between the conveyor and the airfoil as the workpiece travels forwardly under the airfoil such that the leading edge portion of the workpiece raises up from the conveyor toward the airfoil. A clamping mechanism forward of the airfoil receives the leading edge portion of the workpiece. A sensor detects the presence of the leading edge portion between the clamping members and sends a signal in response to which the clamping mechanism is activated to clamp the leading edge portion.

Abstract: An automatic printing machine for producing successive duplex prints on a print substrate feeds successive print substrates to an image forming machine to form an image on a first side of successive print substrates and has a substrate transport path to transport successive substrates having images on a first side through the image forming machine to form images on the opposite side of the substrate. The substrate transport path includes an inverter to invert each successive substrate, twice about an axis perpendicular to the direction of the transport path, a side shifting inverter to invert successive substrates once about an axis parallel to the transport path direction with the corners of successive substrates entering and exiting the side shifting inverter being overlapped by substrates being transported in the path direction through the inverter. In a preferred embodiment the inverter portion of the duplex path is in a removable cassette which is interchangeable with a print substrate cassette.

Abstract: Apparatus is disclosed for automatically inverting workpieces of limp sheet material, such as fabric sheet material. The apparatus includes an endless conveyor having a forward-traveling upper reach for conveying workpieces in a forward direction. A gripper grasps a portion of the workpiece adjacent its leading edge as the workpiece travels on the conveyor, and lifts the leading edge portion of the workpiece off the conveyor. The gripper holds the leading edge portion stationary with a trailing portion of the workpiece extending downwardly from said pick-up means. A pushing mechanism acting on a generally rearwardly facing surface of the trailing portion of the workpiece pushes the trailing portion forwardly to effect complete inversion of the trailing portion as the leading edge portion is held stationary by the gripper. The gripper releases the leading edge portion of the workpiece after the trailing portion of the workpiece has been inverted.

Abstract: A squaring and aligning assembly for the transfer frame of a corrugated sheet stacking and feeding apparatus is mounted within a transverse guide member in the form of an elongated channel. Separate squaring shoes at each side of the machine are selectively moved along the channel. They can be connected in centered positions along opposite flights of a powered chain to center a block of sheets relative to the machine. One can be connected to a chain flight in an off-center position to align the block of sheets in an off-centered aligned condition. Either shoe can be clamped to the channel for edge alignment in response to movement of the remaining shoe.

Abstract: A laser beam printer having a scanner unit and a sheet transport apparatus for use with the scanner unit. The printer includes a sheet feeding part, a photosensitive medium, a transfer part, an upper cover and a scanner unit, the transfer part being provided at an upper portion of the photosensitive medium. The sheet transport apparatus includes an upper transport path for transporting a record sheet from the sheet feeding part to the transfer part of the printer. The sheet transport apparatus further includes a transport path where the scanner unit is provided, the transport path being provided within the upper cover.

Abstract: In a printer, a unit for turning over a sheet comprises: a conveying roll provided downstream of a printer head; a top roll and a bottom roll which are rotatably coupled to the front end and the rear end of a swingable link, respectively; and at least one elastic endless belt reeved around the top roll and bottom roll, the swingable link being swingable about the axis of the top roll with the top roll into contact with the conveying roll through the endless belt, and a control mechanism for operating the link so that it is swung down for a first half of a period of time for which a sheet passes through the conveying roll and the top roll, and swung up for the second half.

Abstract: The sheet transport control apparatus for controlling transport of a sheet is used in a duplex unit for a laser printer, the duplex unit having a transport system and a switchback system.

Abstract: Sheet-feeding apparatus in which documents having distinguishable sides are momentarily halted by transversely spaced rollers to examine the sheets for proper orientation. A high-speed gating roller directs properly oriented sheets along the normal feed path. Upon detecting an improperly oriented sheet, the gating roller is driven in a reverse direction to drive the sheet into an inversion pocket where it is inverted before being returned to the normal path. The feed members along the inversion path are driven at a greater speed than sheets along the normal path to return the inverted sheet to it proper position in the document stream.