Abstract: There is disclosed an automatic original feeder of an improved structure capable of functioning in a first mode in which the original is ejected after exposure and in a second mode in which the original is reversed between exposures of both sides before ejection.

Abstract: In a perfecting printing machine, a switch-back mechanism moves backwardly each sheet delivered out of the printing section, and a switching gate provided immediately after the switch-back mechanism selects a first sheet path to return the sheet whose one side has been printed to the printing section and a second sheet path so that the sheet whose both sides have been printed is delivered to the stacker after being moved backwardly by the switch-back mechanism.

Abstract: A copying machine having a function of prohibiting the operation of an automatic document take-up unit. This copying machine includes an automatic document take-up unit and a document feeder for feeding a document, a document turnover unit for turning over the document for copying of both sides of the document, a designating unit for designating a copy side, a detecting unit for detecting whether the document turnover unit is attached or not, and a prohibiting unit for prohibiting the automatic document take-up unit from operation in case the document turnover unit is not attached.

Abstract: A recording apparatus such as a laser beam printer has a laser beam unit for forming an image, a cassette for automatically feeding paper sheets, a manual insertion port for allowing manual insertion of paper sheets, a switch to allow selection of the cassette sheet feed or manual insertion sheet feed at the side of the printer, a timer to count a predetermined period of time, and a CPU for switching from the manual insertion sheet feed mode to the cassette sheet feed mode when no paper sheet is manually inserted in the manual insertion sheet feed mode after the time in the timer has elapsed. Undesired accumulation of data designating printing in the cassette sheet feed mode is prevented.

Abstract: A double-side printer having a printer body including a print head disposed oppositely to a platen, a sheet conveying unit mounted in the printer body and including a sheet supplying unit for sequentially supplying sheets stacked on a sheet supply tray one by one to a printing position between the print head of the printer body and the platen, and a sheet exhausting unit for stacking and exhausting the sheet from the printing position to an exhausted sheet tray comprising belt-like latent image forming means narrower than the width of the sheet, a pair of transferring units for transferring toner image formed on the latent image forming means reversely to one another to the sheet, and an electrophotographic processing unit having a pair of sheet passages for inserting the sheet to pass the sheet through the transferring units, arranged between the sheet supplying unit and the sheet exhausting unit of the sheet conveying unit, a fixing unit disposed out of the electrostatic processing unit for fixing the toner

Abstract: An image processing system contains a plurality of recording units, each for recording an image on a separate recording material, which are coupled together so that a recording material on which an image is recording on a first recording unit is detected and fed to the next recording unit so as to receive a second image from the second unit and thereby form an overlay on a single recording material.

Abstract: A both side recording apparatus for recording on both sides of a sheet of paper includes printer main body provided with an image forming device and a table provided with a feed-back path. In a one side print mode, a sheet of paper is fed from a cassette and it is temporarily halted by a registration roller, and then the sheet of paper is moved past a photosensitive drum to thereby have a toner image transferred from the drum to one side of the sheet of paper. Then, after having the toner image fixed to the sheet of paper, the sheet of paper is discharged onto a tray. In a both side print mode, after image fixing, the sheet of paper is routed to the feed-back path, so that the sheet of paper is inverted and again fed toward the registration roller. In accordance with the present invention, it is so structured that a sheet of paper is transported at an increased speed while being transported at least a part of the feed-back path.

Abstract: Cut paper electrophotographic printers with continuous paper feed mechanisms including a pickup roll, a photosensitive drum, a charging unit, an optical unit, a host controller, a developing unit, a transfer unit and fixing rolls. Further included are first and second branch passages for providing alternate feeding paths to continuously feed cut paper sheets to the photosensitive drum.

Abstract: An intermediate sheet feeder for temporarily stacking copies having one surface provided with document images by a copier having double-face copying and a composite copying capabilities. The sheet feeder includes a first and a second intermediate trays, a selectable guide, and first and second feed devices associated one with each of the trays for re-feeding the copies stacked on the trays. The copies on the first tray are fed beginning with the uppermost one, and those on the second tray beginning with lowermost one.

Abstract: A copying machine with a multiple transport function having a separation charger for separating from the photoreceptor surface copy paper with an image transferred thereon and a circulating transport passage formed from the paper discharge block to the paper feed block so that it is possible to select the single-sided copy mode for allowing the copy paper to be discharged outside the copying machine after the copying process, the duplex copy mode for allowing the copy paper undergoing one copying process to be led through the circulating transport passage to the copying process block as reversed, or the composite copy mode for allowing the copy paper undergoing one copying process to be led through the circulating transport passage to the copying process block without being reversed.

Abstract: An improved composite copying apparatus which is so arranged that, with an image area once set being memorized, a trimming mode and a masking mode are exchanged with respect to the same image area in each of the copying processes for two times, while the two copying processes can be continuously effected by a two-surface continuous copying device and a circulation transport device, whereby setting of modes, inputting of data, and setting of original documents and paper sheets may be eliminated at the second copying process for simplification of the composite copying operation.

Abstract: An electrographic printing apparatus capable of duplex printing comprises a housing, a source of copy material and an output tray for receiving such copy material after it is imprinted, and a photoconductive member for storing a latent electrostatic image of the information to be imprinted. The printer/copier has first and second paper paths located near the top of the housing so that access to the paper may be achieved from the top of the housing. A photoconductive member is located below the first paper path and comes into contact with a first side of the paper from below in a transfer zone located in the first paper path to imprint the first side of the paper. The second paper path is operative to receive paper after it has passed through the transfer zone and information has been transferred to the first side of the paper.

Abstract: An image recording apparatus comprises first and second image recording units for respectively recording images on a recording medium. Each of the first and second recording units includes a generator for generating a horizontal synchronization signal. A transport unit transports the recording medium between the first and second recording units and first and second control units control the first and second recording units. Similarly, a third control unit controls the transport unit. A master control unit controls the first, second, and third control units according to the external inputs to the apparatus. More particularly, the master control unit includes a selector for selecting one of the horizontal synchronization signals generated by one of the generators included in the first and second recording units in response to an external input for selection of the recording units.

Abstract: A copying machine capable of forming filing margins on both sides of a copying paper forms a filing margin on one side of a copying paper by an ordinary method in which an image of document to be copied is reduced and shifted, and forms a filing margin on the other side of the copying paper by means of shifting the image in a direction opposite to the direction shifted in the ordinary method by the width of the filing margin. Accordingly, filing margins are correctly formed on both sides of the copying paper in the same marginal sides, respectively.

Abstract: A copying apparatus capable of producing a copied image on both surfaces of a copying paper as required includes a copying paper receiving and delivering device capable of receiving a copying paper returned through a copying paper returning passage and delivering it to a copying paper conveying passage. The paper receiving and delivering device includes a copying paper receiving stand supporting member disposed within a housing of the apparatus and a copying paper receiving stand to be mounted detachably on the supporting member, and the paper returned through the paper returning passage is received on the paper receiving stand. Alternatively, the paper receiving and delivering member includes a copying paper receiving stand detachably mounted on the housing and at least partly projecting out of the housing, and the paper returned through the paper returning passage is received on the paper receiving stand.

Abstract: A jam detector for a copying machine includes an optical system with a light emitting element and a light receiving element placed above an intermediate tray for temporarily supporting copy paper after one of its sides has been processed until it is transported away to be processed for the second time. The optical system passes a light beam along the entire length of the tray in the direction of motion of the paper such that the beam is obstructed whenever a sheet is dropped from above into the tray and the jam is detected if the beam is not obstructed at regular intervals.

Abstract: A document feeder for recirculating simplex or duplex document sheets in a sheet stack to and from a scanning station of a reproduction apparatus of the type including a donor/transfer member for producing simplex or duplex copies of simplex or duplex document sheets. The recirculating feeder includes a hopper for holding the document sheets and a first cylinder located in spaced relation to the hopper and in juxtaposition with the scanning station. The first cylinder is capable of having a document sheet tacked to its peripheral surface. Second and third cylinders, capable of having a document sheet tacked to their respective peripheral surfaces, are located between the hopper and the first cylinder in nip relation with the first cylinder and one another. The cylinders are bidirectionally rotatable about their respective longitudinal axes. A document sheet is transportable from the hopper into the nip relation between the second and third cylinders.

Abstract: In a document handling system for a copier, for sequentially feeding and registering document sheets to the imaging station, including a registration gate retractably insertable into the document feeding path to engage and register an edge of the document fed thereagainst; the registration gate has first and second registration sides spaced apart by a preset defined distance, the first edges of the documents are registered against one side of the registration gate while it is inserted into the document feeding path, and the document feeding and registering system then lifts the gate and feeds the document past the gate, and then reverses the direction of motion of selected documents to back their opposite edges into registration with the opposite (second) side of the gate in coordination with reinserting the gate into the document path and in coordination with also registering a first edge of the next-fed document against the first side of the gate, and then the gate is re-retracted and those two (or more) do

Abstract: A copying apparatus including a recording module for forming an image on copy paper sheets fed from a sheet feeding portion and discharging the copy paper sheets to a sheet ejecting portion and a sheet processing module mounted detachably on the sheet ejecting portion. The sheet processing module includes a sheet cassette mounted detachably on the sheet processing module and the sheet feeding portion, a copy receiving tray and a changeover device for changing over to the sheet cassette or the copy receiving tray, a passage of the copy paper sheets discharged from the sheet ejecting portion.

Abstract: Signature printing with an automatic duplexing copier by simultaneously presenting plural document sheets to the imaging station of the copier in a predetermined nonserial page order for producing a set of signature copy sheets suitable for subsequent center-folding into signature sets, by loading a normal serial set of document sheets into an automatic document reordering and presenting system (associated with the copier) which automatically reorders that set of document sheets into a predetermined nonserial reordered page order for signature pair page order "two-up" copying, and automatically presenting the pairs of automatically reordered document sheets to the imaging station of the copier to be copied in the reordered page order to provide collated page order signature sets automatically with the copier for on-line center-folding and finishing without requiring any manual reordering of either the document sheets or the signature copy sheets. The automatic reordering includes automatic 180.degree.

Abstract: Method and apparatus for advancing two simplex documents from an input stack to a copying platen, for making a desired number of duplex copies therefrom. A first simplex document is advanced to a registration position, a second simplex document is subsequently advanced to a registration position with respect to the first document, and the documents thus registered are moved simultaneously to a copying position for sequential copying, and subsequent to scanning the documents a desired number of times to produce a number of copies, are moved to an output.

Abstract: A method and apparatus is provided for making book style duplex copies from simplex originals with images having a top to bottom alignment oriented in the direction of sheet travel. Copy sheets bearing first side images are passed along a duplex path and stacked in a duplex tray. Prior to refeeding, the tray is rotated by 180.degree. in a single plane whereby the leading edge of said sheets becomes the trailing edge of the sheets upon being fed out form the duplex tray. The arrangement provides selectable pad style or book style copying. Sheets rotated in a side registered machine may be offset to provide correct registration with rotation.

Abstract: A display device for a copying machine, wherein when a special mode such as copying with reduction and duplex copying (copying on both surfaces of a copying paper) is selected, it is judged whether the paper feed cassette set for copying is proper for the mode selected and if so, the paper feed cassette set for copying is displayed, while if not, the applicable paper feed cassettes are displayed successively, and furthermore, the paper size stacked in the paper feed cassette is displayed regardless of whether it is in the metric size system or the inch size system.

Abstract: There is disclosed a copying apparatus having a duplex copying capability for copying an image of a first document on the front face of a copy paper and an image of a second document on the rear face of the copy paper. This apparatus is controlled so as to inhibit the copying operation in case that the image of the second document can not be contained within the frame of the rear face of the copy paper. Having the magnification varying capability, this apparatus is controlled so as to set an optimum magnification computed from either a size of the first document or the copy paper and a size of the second document.

Abstract: An electrographic reproduction apparatus, of the single-pass type, capable of producing simplex or duplex copies on a receiver sheet traveling in a continuous direction along a path. The reproduction apparatus comprises a first dielectric member movable along a first path, a portion of such first path being tangent to and on one side of the sheet travel path. Transferable images, corresponding to information to be reproduced, are sequentially formed on such first member. A second member is movable along a second path. One portion of such second path is tangent to the sheet travel path on the opposite side from the first path; and another portion of the second path, spaced from such one portion, is located to position the second member in image transfer relation to the first dielectric member.

Abstract: The invention is a simple method for quickly defining page numbers for signature production, calculating a check value based on the total of page numbers, and displaying document identities and orientations on the platen for each signature to form a booklet. In particular, the operator enters the number of pages to appear in the booklet, the control calculates the number of pages in the finished book, the total number of signatures and a check value. The pagination of signatures is displayed for ease of operator orientation.

Abstract: An integral removable duplex module for use in conjunction with a reproduction processor is disclosed including two paper trays, a first operable as a duplex copy buffer tray or a paper tray and a second operable as an auxiliary paper tray, each tray having a copysheet feeder associated therewith comprised of a single cam operated mechanism having two cantilevered arms supporting constantly rotating feed rollers suspended above each paper tray and associated tray elevator mechanisms which enhances copysheet feeding when the feed rollers are pivoted toward the trays into copysheet feeding position and maintain copysheet trays in non-feeding positions during non-feeding operation. Copysheets are received in the duplex copy buffer tray from the reproduction processor via a reversible exit nip at the output of the processor, which directs sheets passed to an output back to a duplex module paper path, for repassing through the reproduction processor.

Abstract: The present invention relates to a copying machine capable of copying halves of a document onto different copying paper surfaces. When the size of the document is in a predetermined relation with the size of a previously copied document, for example double size of the previously copied document, the copying machine copies halves of the original document respectively on different copy sheets.

Abstract: In an electrophotographic information printer with a xerographic reproduction system automatic duplex printing of sheets is obtained without considerable reduction of the rate of operation in that a sheet (24) after having been discharged from a sheet supply (6, 7) is passed along a feeding path (9, 10) past an image transfer station (5) to a vertical reversing chamber (15) and therefrom fed back to the separate sheet magazine (6) having an inlet opening (23) for returned sheets positioned at the opposite end in relation to the sheet discharge opening (8). The reversing chamber (15) is integral with a sorting unit (14) in a common housing (13a), a selectively operable blocking member (19) and a reversing device (17), respectively, being disposed at the lower end of a vertical partition (40).

Abstract: A sheet-reversing device suitable for use in copying machines and other sheet-handling machines has a main roller and a feed-in and a feed-out roller which are frictionally driven by the main roller. The axes of those rollers remain fixed with respect to each other. When a sheet is fed to the nip between the main roller and the feed-out roller, it is transported without reversing, but when fed up to the nip between the main roller and the feed-in roller, it enters into a switchback path and the formerly trailing edge of the sheet is fed to the nip between the main roller and the feed-out roller and then is reversely transported (trailing edge first). By selecting the appropriate inlet path, the sheet is selectively reversed.

Abstract: An automatic duplex copying machine having a function for forming images on both sides of a copy paper sheet through a process in which a one-side copied paper sheet is once stored in an intermediate tray and is again led to a copying process portion after having been reversed in its transporting direction. The automatic duplex copying machine of the above described type is provided with a one-side copied paper change-over member for leading the one-side copied paper sheet towards either an intermediate tray or an intermediate sub-tray during a double-side copying operation, and a one-side copied paper selecting member for selectively supplying a one-side copied paper sheet, during a copying operation for the reverse side thereof, to the copying process portion from the intermediate tray when no paper exists in the intermediate sub-tray or from the intermediate sub-tray when papers exist therein, with one or more intermediate sub-trays being arranged in the vicinity of the intermediate tray.

Abstract: An automatic duplex copying machine with a circulating document handler is characterized in that a plurality of single-sided-image bearing documents are piled on the circulating handler and a document page having been copied on a front side on a copy paper is sheltered in a copier-paper discharge path of the circulating document handler. Upon the occurrence of a paper jamming during copying another document page to be copied on the rear side of the copy paper, another document is sheltered into a document reverse tray of the circulating handler. The document with the front side page sheltered in the paper discharge path is forwarded into a document table, again, to conduct a supplemental copy. After that, the document with the front side page is sheltered in the document discharge path and the document with the rear side page is forwarded into the document table, again.

Abstract: An original reading apparatus capable of scanning separately a first area and a second area of an original to be reproduced, includes an original supporting table for supporting thereon an original having the first area and the second area; a scanner for optically scanning the original placed on the original supporting table, wherein the first area and the second area is in series in a direction of a scan of the scanner; driver for driving the scanner selectively in a first mode wherein the scanner first scans the first area of the original and automatically and sequentially scans the second area of the original and in a second mode wherein the scanner first scans the second area of the original and automatically and sequentially scans the first area of the original; and a selector for selecting one from the first mode and the second mode.

Abstract: An image recording apparatus includes a rotatable transfer member and a plurality of latent image bearing members which are in rolling press-contact with the transfer member at different positions. Around the latent image bearing members, are provided latent image forming devices and devices for developing the latent image. The developed images formed on the respective latent image bearing members are transferred by pressure onto a recording material or onto the transfer member at the respective nips formed between the transfer member and one of the latent image bearing members. With this apparatus, duplex image recording, overprint or superimposing recording, and/or high speed recording can be accomplished.

Abstract: The invention relates to a method and apparatus for forming images on both sides or surfaces of sheets corresponding to images on two-side originals.In a method for two-side image formation for forming images on both sides of sheets from images formed on two-side originals, a first-side image formation cycle is continuously performed for a required number of sets of sheets, the first-side image formation cycle including sequential operations for forming images on the first sides of the originals on the first sides of the sheets and for storing the one-side copied sheets in an intermediate storing portion, and thereafter a second-side image formation cycle is performed by sequentially forming images of the second sides of the originals on the second sides of the corresponding sheets. The invention also relates to an apparatus adopting this method.

Abstract: An integral removable duplex module for use in conjunction with a reproduction processor is disclosed including two paper trays, a first operable as a duplex copy buffer tray or a papaer tray and a second operable as an auxiliary paper tray, each tray having a copysheet feeder associated therewith comprised of a single cam operated mechanism having two cantilevered arms supporting constantly rotating feed rollers suspended above each paper tray and associated tray elevator mechanisms which enhances copysheet feeding when the feed rollers are pivoted toward the trays into copysheet feeding position and maintain copysheet trays in non-feeding positions during non-feeding operation. Copysheets are received in the duplex copy buffer tray from the reproduction processor via a reversible exit nip at the output of the processor, which directs sheets passed to an output back to a duplex module paper path, for repassing through the reproduction processor.

Abstract: A copying apparatus wherein a document consisting of a first half side and a second half side can be scanned by a scanning member independently corresponding to the area of the first and second half sides. These copies are formed on the both sides of a copy paper or on two different copy papers selectively.

Abstract: An electrophotographic copying machine including a copy enabling device, a mode switch, a detection device, and a control device. The mode switch is actuated to select an independent dual copy mode for independently copying two copy documents mounted on two halves of a document table. The detection device is responsive to the mode switch for detecting which copy information relates to either of the two copy documents. The control device is responsive to the detection device for selectively controlling execution of the independent dual copy mode.

Abstract: A method for producing duplex copies from a duplex original wherein only one copy of the odd or even sides of the original documents is made during the first circulation of the originals to and from the exposure platen. During each subsequent circulation of the original documents, excluding the last circulation, two copies of the odd or even sides of the original are produced and either stored in a buffer tray if one side of the copy sheet is blank or transported to an exit tray if duplex copying has been completed on the copy sheet. Only one copy of the odd or even sides of the original documents are made during the last circulation and transfered to the blank sides of the copy sheets in the buffer tray to complete a duplex copy.

Abstract: The surface of a sheet-like member such as a sheet of paper may be illuminated by surrounding the member with confronted electrodes. Passing an AC voltage across the electrodes generates a corona discharge within the member. The light so produced facilitates the copying of images on the surface of the member by illuminating the surface from within.

Abstract: An apparatus for the automatic microfilming of documents of different formats and the development of exposed microfilms in a continuous process. The apparatus includes a computer controlled combination of (a) an installation for the automatic insertion of documents and their transport through an exposure device from a stack of documents of a certain format, with means to adjust to a given format; (b) an interchangeable lens camera with an illumination and mirror system for the simultaneous imaging of the front and reverse side of the document and with an automatic film transport device; (c) a camera with an exposure system for the filming of titles and continuous identifications; (d) an automatic film development installation; and (e) a central guide and control system with an input keyboard, a monitor and a processor.

Abstract: A sheet reverse apparatus for reversing a paper sheet discharged from an image forming apparatus has a mounting mechanism fixed to the image forming apparatus, and a power transmission mechanism. The power transmission mechanism is engaged with an output gear coupled to a drive source of the image forming apparatus, and transmits a driving force from the image forming apparatus to an input gear. The power transmission mechanism has a swingable plate and a spring for biasing the swingable plate in one direction. A movable gear meshed with the input gear and rotatable therearound is axially supported on the swingable plate. When the sheet reverse apparatus is mounted on the image forming apparatus, driving power from the sheet reverse apparatus can be supplied from the image forming apparatus through the input gear and the power transmission mechanism.

Abstract: Copy production machine having a print mode for making copies under automatic control interruptible by a copy mode of making copies. In the print mode images to be copied are automatically supplied to a copy production portion. In the copy mode, a variety of image supplying techniques may be employed. Copy output means separate copies made from the two modes. In the print mode images are preferably precollated whereas in the copy, mode produced copies are collated. In a print mode plural image sources may be employed, such sources being activated ad seriatim.

Abstract: A laser printing system for multi-color and verso printing is formed of a plurality of units arranged in series which are simultaneously operated. A recording medium emerging from a paper exit region of a preceding unit is supplied to a paper entry region of the following unit. A switchable deflection means for the paper web is disposed in at least one of or between the units. The individual units can thus be constructed of individual fixing modules and printer modules which can be combined with one another. At least one fixing module follows a plurality of printer modules.

Abstract: A method of producing duplex copies from simplex originals, including sequentially feeding one at a time simplex originals from a stack of simplex originals to be reproduced as duplex copies; performing, for every other fed originals, first copy operation to produce one sided copies from said every other originals; sequentially feeding again one at a time the same originals; performing, for remaining every other fed originals, second copy operation to form images on such sides of the one sided copy as not bearing the images by the first copy operation step, to produce duplex copies from simplex originals.

Abstract: A copying apparatus capable of copying and printing an image of a document on one side or on either side of a printing sheet including a plurality of image recording units each including an image recording member and a variety of devices associated with the image recording member for performing image copying. The adjacent two image recording units are connected together by a printing sheet transporting path provided with printing sheet reversing means having a switch member. Printing sheets each having an image of a document copied and printed on one side thereof by the image recording member of the first image recording unit have their posture reversed by the printing sheet reversing means so that an opposite side thereof will face the image recording member of the second image recording unit, whereby the image of the document can be printed on the opposite side of the printing sheets.

Abstract: The present invention provides a recording apparatus including a plurality of printers each for reproducing an image on a recording sheet upon receiving the same signal, and a single sheet delivering device for delivering recording sheets to the printers. The present invention also provides a recording apparatus including a plurality of printers each for reproducing an image on a recording sheet upon receiving the same signal, and a sheet discharge device for feeding the recording sheets from the printers to a collector or sorter.

Abstract: An automatic duplex electrophotographic copying machine comprises a paper supply device, a photoreceptor, a copy enabling device, a copied paper expelling device, a single-side copied paper storing device, and a selector activated for selecting the copied paper expelling device or the single-side copied paper storing device. The single-side copied paper storing device is movable to receive the single-side copy paper and supply it to the paper supply device, so that the single-side copied copy paper is transported to the photoreceptor and the copy enabling device, to copy a new image onto the other or reverse side of the paper. The selector comprises a flapper flapped for the selection. The single-side copied paper storing device comprises a paper regulating device for regulating the exact position of the paper within the device to copy the image on the exact position of the reverse side of the paper.

Abstract: This specification discloses a both-side recording apparatus in which a sheet conveyed by first recording means for recording an image on a first surface of the sheet is reversed by sheet reversing means and directed to second recording means for recording an image on a second surface of the sheet, whereby images are recorded on the first and second surfaces of the sheet.

Abstract: A system for presenting documents to a slit-scan xerographic exposure station includes a fluidic storage station having a housing in which a rack for storing documents is located. The rack includes a plurality of pockets in each of which a document may be stored, the rack being movable in a vertical direction so that any one of its pockets may be aligned with an opening in the housing. A fluid stream is used to move a document in a pocket aligned with the opening out of the storage apparatus and into engagement with transport apparatus. The transport apparatus includes a vacuum document drum which moves a document past the exposure station and, in one mode of operation, inverts the document prior to its return to a pocket at the station. In another mode of operation, the direction of travel of the drum is reversed after the document has been exposed and the document is returned without inversion.