Abstract: A paper sorting apparatus for an electronic device includes a chassis with a control module disposed therein, a paper transporting module accommodated in the chassis, and a plurality of paper trays attached to the chassis. The paper transporting module has a first end, that is pivotable, and a second end, that is attached to the control module. The control module is capable of rotating the second end about the first end and coupling the second end with one of the paper trays.

Abstract: A sheet post-process apparatus according to one example of the present invention includes a movable stack tray for stacking a sheet that is elevated in a vertical direction; a movable tray position detection unit that detects a vertical position of the movable stack tray while a request command for post-processing of the sheet is not received; an upper surface sensor that senses either an upper surface of the movable stack tray or an upper surface of the sheet stacked on the movable stack tray when a first position of the movable stack tray detected by the movable tray position detection unit is lower than or equal to a predetermined first height; and a movable tray moving unit that moves the movable stack tray upward when either the upper surface of the movable stack tray or the upper surface of the sheet stacked on the movable stack tray is not sensed by the upper surface sensor.

Abstract: An improved system for administering a computer and paper-based test, including a multifunction peripheral having a printing function and a scanning function for operating on the test, and a host remotely connected to the peripheral over a network. The multifunction peripheral is configured to receive the test from the host and transmit a scanned copy of a modified paper test to the host, and the host is configured to transmit a result of an evaluation of the modified test to the peripheral. A method for administering a test including transmitting a registration code, receiving a print job including a test associated with the registration code and printing the test. The method further includes digitizing the test and transmitting the digitized test.

Abstract: A non-gated print media crossover for a printing system includes crossover pathways which intersect at a crossover junction. A control system controls arrival of sheets of print media at the crossover junction whereby a sheet conveyed on the first crossover pathway traverses the junction in an intersheet gap between sheets traversing the junction on the second crossover pathway. The printing system includes print media processing units, such as marking engines, paper sources, and output destinations, which are connected by a conveyor system incorporating the crossover.

Abstract: A sheet processing apparatus comprises that a plurality of sheet processing portions that perform a sheet process on a sheet; and a plurality of conveying paths which transport the sheet to connect to the plurality of sheet processing portions, respectively, wherein while one of the plurality of sheet processing portions executes the sheet process on a preceding sheet or a preceding sheet bundle, a subsequent sheet is conveyed to the conveying path connecting to the other one of the plurality of sheet processing portions and held on standby on the conveying path connecting to the other sheet processing portion.

Abstract: A printing medium separation apparatus, including: a density information extraction unit that extracts density information about a predetermined printing area of a printing medium for use to print an image; an area partition unit that partitions the printing area into a plurality of partition areas; a blank amount calculation unit that calculates, based on the density information extracted for each of the partition areas being results of partitioning by the area partition unit, a blank amount of each of the partition areas; and a separation unit that subjects the printing medium to separation based on a result of calculating by the blank amount calculation unit.

Abstract: Provided is a sheet processing apparatus, including: a stacking unit that is capable of stacking discharged sheets; a drive mechanism that is capable of moving the stacking unit; a storage device that holds data on a moving time of the stacking unit in a rewritable manner; an arithmetic unit that is calculates an estimated value of the moving time of the stacking unit based on the data; and a correcting unit that corrects the data held in the storage device by using an actual measurement value of the moving time of the stacking unit.

Abstract: A recording material stacking apparatus equipped with a plurality of discharge ports and a plurality of stacking trays can be set to normal mode and large capacity stacking mode each having a different maximum loading capacity. A stacking tray on the upper side has a plurality of lower limit positions and uses a lower limit position located on the upper side when normal mode is selected. On the other hand, it uses a lower limit position located on the lower side when the large capacity stacking mode is selected. The lower limit position located below a stacking tray on the upper side when this large capacity stacking mode is selected exists at a position in which it blocks a lower discharge port of sheets. Selection of the large capacity stacking mode and normal mode is executed according to a result of computation from data input through an input portion.

Abstract: An object of this invention is to provide a convenient printing system applicable not only to the office environment but also to the POD environment. To accomplish this, a printing system capable of supplying a print medium to a printing apparatus from a plurality of feeding apparatuses each having a feeding unit for feeding a print medium, a multi feed detection unit for detecting occurrence of multi feed of overlapping print media, and a multi feed discharge unit for discharging multi-fed print media includes a multi feed discharge destination setting unit for, when the multi feed detection unit detects occurrence of multi feed, setting which of multi feed discharge units is to accept multi-fed print media, and a control unit for controlling the feeding apparatus to discharge the multi-fed print media to the multi feed discharge unit set by the multi feed discharge destination setting unit.

Abstract: A sheet-stacking apparatus includes a gripper configured to convey a sheet, two stacker trays stacking sheets arranged in a row, and a support member configured to separately elevate the two stacker trays. The stacker tray is selected according to a sheet length.

Abstract: A sheet-stacking apparatus includes a gripper configured to convey a sheet, two stacker trays stacking sheets arranged in a row, and a support member configured to separately elevate the two stacker trays. The stacker tray is selected according to a sheet length.

Abstract: A crease forming apparatus includes a crease forming member, an insertion groove and a drive unit. The crease forming member extends along a given line of a recording member for forming the crease in the given line. The insertion groove is formed in a portion disposed opposed to the crease forming member and that allows insertion of the crease forming member thereinto. The drive unit drives the crease forming member in such a manner that the crease forming member advances and retreats between a wait position and a crease forming position, and that inserts the crease forming member situated at the wait position into the insertion groove up to the crease forming position against a holding force to the recording member in such a manner that a peripheral portion of the given line of the recording member is set along the crease forming member.

Abstract: A printing control method and device for receiving and processing print data including a security level, includes determining the security level of the print data when a predetermine fault occurs during printing processing of the print data and performing different fault recovery processing of the print data in accordance with the determined security level.

Abstract: An image forming system includes: a first sheet stacking device including a rack, provided downstream of an image forming apparatus in a conveyance direction of a recording sheet and connected with the image forming apparatus, for stacking the recording sheet delivered from the image forming apparatus; a second sheet stacking device, which is provided downstream of the first sheet stacking device and connected with the first sheet stacking device; and a controller for controlling the image forming apparatus and the first and second sheet stacking devices. At least one of the first and second sheet stacking devices has a job stop button for stopping a printing job, and when the job stop button is turned on while the printing job execution is in progress, the controller controls the sheet stacking device to stop a stack of a recording sheet to the rack.

Abstract: A sheet conveyance release mechanism has a movable guide unit and a fixed guide unit adjacent to the movable guide unit. The mechanism has a horizontal conveyance guide unit for conveying a sheet in a substantially horizontal direction, and a vertical conveyance guide unit for conveying a sheet in a substantially vertical direction. A jam release lever moves the movable guide unit from a first position adjacent to the fixed guide unit in the horizontal direction to a second position below the fixed guide unit, and moves the vertical conveyance guide unit so as to separate from a guide surface.

Abstract: An image forming system includes: a first and second stacking sections arranged at a position different from each other for stacking a sheet with an image formed thereon by an image forming section; a first conveyance path and a second conveyance path longer than the first one for conveying the sheet to the first and second stacking sections, respectively through a common conveyance path, wherein an interval between sheets fed along the common conveyance path is smaller than the difference between the second and first conveyance paths; a switching section for switching a conveyance path of the sheet conveyed along the common conveyance path between the first and second conveyance paths; and a control device controls such that an (N+1)th sheet is stacked on the first stacking section after the N-th sheet has been stacked on the second stacking section.

Abstract: An image forming apparatus comprising a main body having a copy function of printing an image read from a document on a paper sheet, a printer function of printing an externally input image on a paper sheet, and a paper ejection port to eject a printed paper sheet. The apparatus also includes a paper ejection unit which has a first tray and a second tray for receiving a paper sheet ejected from the paper ejection port, and moves the trays selectively to the positions corresponding to the paper ejection port. The apparatus also includes a control panel for setting an operating condition of the apparatus, and a state key provided on the control panel and configured to operate when holding the trays at current positions.

Abstract: A multi-bin sheet collection system comprising at least one secured stacking bin operatively configured to secure imaged sheets from general purview.

Abstract: Sheet thickness data obtained from the output of a sheet thickness detecting sensor are calculated to thereby calculate a sheet bundle thickness. When the sheet bundle thickness reaches a predetermined value, other aftertreatment differing from a set aftertreatment is executed.

Abstract: An image forming system has an image forming apparatus which has a printing unit which can perform a printing process of data of a storage unit which can store data of a plurality of jobs and which has a conveying unit which can convey a sheet from the print unit to a sheet processing device which can perform sheet processing, including at least a gluing process, for sheets from the printing unit, the system comprising: a controller adapted to permit a predetermined process related to the gluing process when the job to be processed is a job which meets a predetermined condition, and to inhibit the predetermined process related to the gluing process when the job to be processed is not a job which meets the predetermined condition, thereby overcoming obstacles to realization of an image forming system capable of a gluing process.

Abstract: A linear translation table for use in conjunction with a sheet feeding machine and a conveyor for laterally translating the sheet feeding machine over rows of product receiving portions of boxes or blisters in sheets of bubble packaging such that the sheet feeding machine can deliver product in an array of rows and columns of product receiving portions as the linear translation table is pitched. The rows of product receiving portions are indexed and linear translation table reverses direction to fill the next row. A controller on the linear translation table is programmed for the distance between columns and stops long enough for the sheet feeder to dispense a product into the product receiving portion. In this manner boxes with rows and columns of segments to be filled with product or formed pocket sheets can be filled with a sheet feeding machine which normally only delivers product linearly.

Abstract: An image forming method for stacking sheets in an apparatus that operates in a first mode or a second mode and includes discharging bins in which image-formed sheets are stacked. Sheets are discharged face-up in the first mode and face-down in the second mode. The method has the step of selecting the fisrt or second mode and then making different an amount of sheets stacked in the discharging bin depending on the selected mode.

Abstract: A copying machine performs a panel operation necessary for copying at a step S601 and performs ACS determination for determining whether an original image is a color image, a monochrome image or an indefinite image at a step S603. Then, the copying machine performs copying at a step S605 according to a print mode responsive to a result of ACS determination. At this time, a printed paper for an indefinite image is discharged to a discharge position different from that for another printed paper. The copying machine displays the result of the ACS determination on an operation panel at a step S607. Therefore, an original determined as the indefinite image can be recognized at a glance so that a countermeasure can be immediately taken if reprinting is necessary.

Abstract: A system which enhances the process of specifying the settings of paper input and paper output by a printer driver. The system causes a Properties dialog box to be displayed on a display. The dialog box includes an image, which is an icon schematically illustrating the appearance of a printer, a paper input settings display box showing information relating to paper input to the printer, and a paper output settings display box showing information relating to paper output from the printer to be displayed in a mutually correlating manner with indication lines. Namely, the system does not require the user to switch over the card when the user carries out both the settings of paper input and the settings of paper output. The paper input settings display box has radio buttons corresponding paper output sources. The user clicks one of the radio buttons to select a desired input paper source. The paper output settings display box has checkboxes corresponding to paper outputs.

Abstract: A sheet conveying device having multiple directional outputs with multiple registration options having no fixed registration wall for sequencing single sheets or two approximately identical sheets arriving in a two-up configuration, includes a first, second, third, and fourth pairs of rolls. The first pair of rolls and the second pair of rolls rotate about a first shaft, which is rotated by a first servomotor. The third pair of rolls rotate about a second shaft, which is rotated by a second servomotor, wherein the shaft is oriented at an angle approximately 90° relative to the first shaft. The fourth pair of rolls rotate about a third shaft oriented at an angle approximately 90° relative to the first shaft and approximately parallel to the second shaft, and a third servomotor operably connected to the third shaft rotates the third shaft.

Abstract: A drop-box mechanism or system is disposed adjacent to an article conveyor and atop a flat mail storage tub and comprises a platen movable between first and second chambers at which the open top of the storage tub is respectively uncovered and covered. When the platen uncovers the storage tub, deflecting fingers move downwardly so as to cover the platen tracks and the space defined between the bottom of the drop-box mechanism and the open top of the storage tub so as to prevent flat mail articles from becoming jammed within the tracks or from being inadvertently discharged through the space defined between the bottom of the drop-box mechanism and the open top of the storage tub. In this manner, the predetermined conveyed order of articles is preserved so as to facilitate sequence address delivery of the articles to recipients.

Abstract: A printer has its software controlling the selection of each of its output bins for receiving printed sheets in accordance with the type of media printed. Each type of media has its printed sheets directed to a specific output bin. An output bin may receive sheets of more than one type of media, but the printed sheets of each type of media will be directed to only one output bin or logically linked output bins.

Abstract: A novel output sheet handling apparatus includes outlets, ejection trays, a tray switching mechanism, an outlet switching mechanism, and a controller. Each of outlets ejects a recording sheet. The outlets include at least one straight outlet configured to eject a recording sheet and to eject no stack of recording sheets processed in a complex finishing mode. The ejection trays, at least same plurality as the plurality of outlets, include at least one ejection tray configured to receive the recording sheet from at least two outlets among the outlets. The tray switching mechanism performs a tray switching operation for switching one of the ejection trays in operation to another. The outlet switching mechanism performs an outlet switching operation for switching one of the outlets in operation to another.

Abstract: An output mechanism for use with an inkjet printer for printing a multi-page document, including plural paper-receiving output trays; a controller for determining the total number of pages, the number of copies of each page to be printed, and the paper-receiving tray which will receive each printed page, wherein each page is provided with sufficient time to dry before a subsequently printed page is stacked on top thereof; and a paper directing mechanism for directing the paper to a specific paper-receiving tray.

Abstract: The CPU detects an error in the timing of offset stacking by the offset stacker on the basis of the time when the offset motor signal for driving the offset motor is generated and the time when the initial position sensor is turned ON. Upon detecting an error in the timing of offset stacking, the CPU forces the image formation by the image forming unit and the paper transportation by the paper transporting motor to stop, thus preventing paper from being introduced into the offset stacker.

Abstract: An image forming apparatus includes discharging bins in which image-formed sheets are stacked, and uses a bin elevating motor to switch discharging of sheets into a selected discharging bin. The image forming apparatus is provided with a sensor for detecting the amount of stacked paper in the selected discharging bin. When the selected discharging bin is changed to a newly selected discharging bin, the discharging bins are moved by the bin elevating motor, whereby the sensor detects the amount of stacked paper in the newly selected discharging bin to which discharging can be performed after the moving. Subsequently, the sensor directs the start of image formation.

Abstract: A printing apparatus provided with a deposition unit for printed sheets comprising a number of copy trays situated one above the other, which trays are adjustable in height independent of one another to a deposition position with respect to the sheet delivery rollers disposed at a fixed height, and to a parking position. Upon the activation of the printing apparatus by a start key provided on the printing apparatus, a control system sets the bottom copy tray into a deposition position and the other copy trays into a higher parking position. Upon the activation of the printing apparatus by a start key disposed at a distance from the printing apparatus at a workstation, the control system selectively sets one of the other copy trays into a deposition position and the bottom copy tray into a lower parking position.

Abstract: A system for automatic disposal of an unwanted output includes a print engine for generating a print job having an output; a finishing device connected to said print engine for finishing said print job, wherein said finishing device includes: an intermediate bin for receiving said output from said print engine, and for holding said output until said print job is complete; a waste bin for selectively receiving a cancelled print job; and at least one output bin for receiving a completed print job.

Abstract: An image forming system includes a digital copy machine to form an image on a group of sheets from an image of a group of documents, and a staple sorter sorting and discharging copied sheets from the digital copy machine, According to the staple sorter, control is provided so that a sheet of a long left period of time is transported from the bin to a nonsort tray when all of a plurality of bins provided in the staple sorter are used during a print operation. The left time of a sheet is monitored even when a print operation is not carried out. When the left time exceeds a predetermined time, control is provided so that the sheet left in the bin is transferred to the nonsort tray. As a result, a sheet discharge device is provided improved in operability of sheet discharge.

Abstract: A sheet handling unit including a processing station having a stapling mechanism for stapling a plurality of sheets; a plurality of mail trays for receiving sheets transported from the processing station; and a bulk tray for receiving sheets transported from the processing station. The processing station is fixedly provided in a sheet handling unit body. The sheets transported from the processing station are delivered switchably to any of the mail trays or to the bulk tray.

Abstract: A sheet sorting apparatus capable of changing the discharge priority bin in accordance with the number of sheets. The sheet sorting apparatus discharges sheets from a specified discharge port into a corresponding bin. The bins are constructed so as to be readily removable, and the discharge priority bin is determined based on the estimated number of discharge sheets and the capacity of the bin.

Abstract: A paper accumulating device (20) according to the present invention comprises a paper bundle feeding port (31), a plurality of paper bundle receiving portions (33, 34) including paper bundle receivers (21, 22) for accumulating paper bundles respectively, a delivery path (23, 24, 25) for delivering the paper bundles sequentially fed to the paper bundle feeding port to the paper bundle receiving portions (33, 34). The paper bundle receiving portions (33, 34) are provided with sorting mechanisms (40, 60) for sorting the delivered paper bundles. The delivery path includes a main delivery path portion (23) extended from the paper bundle feeding port (31) to a branch point (32), and a plurality of branch delivery path portions (24, 25) extended from the branch point (32) to the related paper bundle receiving portions (33, 34) respectively.

Abstract: In a mailboxing system in which the different numbers and types of printed sheets being printed by the different users of a shared users printer are separately stored in different assigned mailbox bins in an array of mailbox bins, there is provided a system for automatically changing the spacing between selected adjacent bins to provide selectably different sheet stacking capacities for different bins for the different numbers of printed sheets being stored in the respective bins of different users. With this system the bin capacity can also be automatically reduced when the sheets are removed from that bin. Greatly increased overall and individual bin sheet stacking capacity is thus provided for the same overall system size as compared to conventional fixed spacing bins. Also, many more print jobs can be stored in the same user-assigned bin instead of having to split up large print jobs into other, overflow, bins.

Abstract: In a sheet storage apparatus having a plurality of bin trays for stacking sheets fed sequentially from an image forming device into sheaves of sheets, sheet accommodating spaces formed on the respective bin trays for receiving the sheets fed from the image forming device are made wide at a sheet intake position so as to successfully introduce the sheets thereinto and narrow at the positions above and below the sheet intake position so as to effectively store the sheets. When the sheets introduced into the sheet accommodating space at the sheet intake position comes to a prescribed number or height, the bin trays are moved upward or downward to narrow the sheet accommodating spaces, thus to compress a bulky stack of sheets. When taking out the finished sheaves of sheets from the apparatus, the sheet accommodating spaces formed between the bin trays are made relatively wide.

Abstract: An object of the invention is to provide an image forming apparatus in which discharged sheets can be easily distinguished, and which has a reduced number of parts and can be economically produced. The apparatus has: a discharge tray unit which receives a sheet on which an image is formed; a fifth conveying path which guides a sheet from an image forming section to the discharge tray unit so as to place the sheet on the discharge tray unit with downward directing the image forming face; a first conveying path which guides the sheet from the image forming section to the discharge tray unit so as to place the sheet on the discharge tray unit with reversing the sheet to a direction opposite to the direction of the image forming face; and switching means for switching over the fifth conveying path and the first conveying path.

Abstract: A paper currency reception/delivery machine having a high degree of general-purpose utility and implemented in a simple structure of a small size at low cost and capable of handling foreign paper currencies of different sizes and other leaflets is imparted selectively with given ones of intelligent functions such as discrimination of denominations, recycling on a denomination-by-denomination basis, replenishment, collection and detailed check and the like. The paper currency reception/delivery machine includes a loop-like paper currency transport path extending in one direction by way of a paper currency checking means, a paper currency reception/delivery port, a temporary custody unit, a delivery-destined paper currency storing unit, a received paper currency storing unit, a recycling-destined paper currency storing unit, a replenishment/collection-destined paper currency storing unit and a rejection-destined paper currency storing unit.

Abstract: An automatically sheet sorting device has multistage trays for storing sheets fed from a copying machine or the like, which each incorporate a sheet detecting mechanism including a sheet-empty detection lever of sheet-empty detecting means for detecting the sheet existing on the tray, and a sheet-full detection lever of sheet-full detecting means for detecting the sheets reaching a prescribed storage limit. The individual operable sheet-empty detection lever and sheet-full detection lever can be assembled in the tray compactly. A sheet-empty actuating member connected to the sheet-empty detection lever for actuating a sheet-empty switch and a sheet-empty actuating member connected to the sheet-full detection lever for actuating a sheet-full switch are of electrically non-contacting mechanism, thus to enable the tray to he readily detached from and attached to the device without any troublesome work of establishing an electrical connection or disconnection of electric elements between the tray and the device.

Abstract: An image forming system which is comprised of a copying machine, and a sorter which has a bin assembly having a plurality of bins. In the sorter, the bin assembly is movable up and down pitch by pitch to store sheets on each bin, and stapled the stored sheets if necessary. A bin to store a first sheet and a first moving direction of the bin assembly are set in such a way that the bin assembly is stopped upward when the last process to sheets is finished.

Abstract: A sheet ejecting mechanism is provided with a sheet ejecting sensor which detects a sheet to be ejected onto an offset tray and an upper-surface position-regulating section which regulates the position of the upper surface of the sheets in accordance with the position of an arm which is in contact with the upper surface of the sheets on the offset tray. When the sheet ejecting sensor detects a sheet to be ejected, a CPU of the upper-surface position-regulating section turns on a solenoid so as to remove a contact between an arm and the upper surface of the sheets. Meanwhile, when the sheet ejecting sensor detects no sheet to be ejected, the CPU turns off the solenoid. With this operation, the arm is allowed to come into contact with the upper surface of the sheets so as to regulate the position of the upper surface of the sheets.

Abstract: Selectable inverting or folding of various sizes of sheets in various fold positions is provided with an integral dual mode inverting or folding apparatus including a sheet inverting chute for receiving and guiding a sheet therein and having both an input and an intermediate aperture; and a reversible servo driven sheet drive in the chute downstream of the intermediate aperture. A sheet fed into the chute for inversion is reverse driven back to the chute input. A sheet fed into the chute for folding is instead stopped at the desired folding position by the servo drive and reverse driven out of the intermediate aperture into a sheet folding nip, preferably with the assistance of a blade member moved through the intermediate aperture to buckle and push that portion of the sheet adjacent to the intermediate aperture into the sheet folding nip.

Abstract: There is disclosed a sheet distribution device in which by using a junction conveying means for conveying sheets from a main sorter unit to a slave sorter unit also as a first conveying portion of the sheet distribution device when sheet distribution devices are interconnected, the manufacture cost of the sheet distribution device is reduced. The interconnectable sheet distribution device is provided with a first conveying portion 5A for receiving an image formed sheet 2 from an image forming device 1 to convey the sheet into a body and a second conveying portion 5B for receiving the sheet 2 from the first conveying portion 5A to convey the sheet to each of plural distribution bins 4. At the time of interconnection, a third conveying portion 5D (junction conveying means) for conveying the sheet 2 from a main sorter unit S1 to a slave sorter unit S2 is used also as the first conveying portion 5A.

Abstract: A sheet aligning apparatus for a copying machine having a loading unit capable of loading a plurality of stacked sheets. A comparing unit determines and compares respective sizes of at least two sheets partially stacked and loaded on the loading unit. An alignment unit carries out alignment when the width of a sheet of a first job is the same or smaller than a sheet of a second job and inhibits carrying out alignment when the width of a sheet of the first job is greater than a sheet of the second job. The apparatus further includes first and second discharge units for discharging a group of sheets from respective first and second jobs onto the load unit. A determination unit determines successiveness of the first and second jobs and, based on a result of the determination, a post-processing unit executes post-processing for the group of sheets of the first job upon completion of discharging the group of sheets of the second job.

Abstract: Individual sheets of a sheet material to be treated which arrive in an arrival sequence, are distributed on two or more adjacently located conveying tracks. The sheets are conveyed along the conveying tracks through a processing station and are sorted thereafter in accordance with their arrival sequence. The distribution of the sheets is based on evaluating utilization of the conveying tracks to minimize the distance between sheets following each other on the same transport track. A throughput for sheets with varying length that is approximately equal to the throughput for sheets of same length is achieved.

Abstract: A printing apparatus is provided with a main body including a video controller, having video signal generation device for generating a video signal from image information based on a recording command from an external apparatus and control device, and with a supervisory controller including optional unit control device for controlling at least an optional unit connectable to the main body. The video controller includes a process time informing device for informing the supervisory controller of an image development process time, and the supervisory controller includes a paper transport time memory for storing the paper transport time from the optional paper feed source to the entrance of the printing apparatus, a comparator for comparing the process time informed by the process time informing device with the paper transport time stored in the paper transport time memory, and a paper feed source changing device for changing the paper feed source in case the comparator identifies that the process time is shorter.

Abstract: The present invention provides new offsetting paper stacking devices and methods which automatically stack sheets of paper into groups which are offset from each other. The offsetting paper stacker stacks sheets of paper that are feed into an input end of the device one at a time at a high rate of speed. The paper is stacked in one pile, however, within that pile there are groups of sheets that are stacked at a sideways offset to the group immediately above and below. Accordingly, every other group of sheets of paper will be in line with each other and each adjacent group will be offset from each other. The offsetting paper stacker includes stacker wheels which are rotatable about two axes of rotation to stack the paper in an offset manner.