US3862802A - Sheet reversing apparatus and a duplex reproducing apparatus employing same - Google Patents

Sheet reversing apparatus and a duplex reproducing apparatus employing same Download PDF

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Publication number
US3862802A
US3862802A US390650A US39065073A US3862802A US 3862802 A US3862802 A US 3862802A US 390650 A US390650 A US 390650A US 39065073 A US39065073 A US 39065073A US 3862802 A US3862802 A US 3862802A
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United States
Prior art keywords
web
sheets
storage
sheet
roll
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Expired - Lifetime
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US390650A
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English (en)
Inventor
Henry R Till
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Xerox Corp
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Xerox Corp
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Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Priority to US390650A priority Critical patent/US3862802A/en
Priority to CA198,829A priority patent/CA1037543A/en
Priority to DE2425207A priority patent/DE2425207C3/de
Priority to NLAANVRAGE7408315,A priority patent/NL182250C/xx
Priority to SU7402042240A priority patent/SU579954A3/ru
Priority to SE7410355A priority patent/SE406754B/xx
Priority to BE147649A priority patent/BE818894A/xx
Priority to JP49093803A priority patent/JPS5742861B2/ja
Priority to GB36395/74A priority patent/GB1481429A/en
Priority to FR7428891A priority patent/FR2257523B1/fr
Application granted granted Critical
Publication of US3862802A publication Critical patent/US3862802A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
    • G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
    • G03G15/232—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member
    • G03G15/234—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters

Definitions

  • a sheet reversing apparatus for reorienting sheets so that a first side and an opposing side of the sheets may be operated upon including means for storing the sheets.
  • the storing means comprises a web wherein the sheets are supported between adjacent layers.
  • Means are provided which act on the web to deliver the sheets therefrom in a reversed orientation.
  • the delivering means deflects the web through an arcuate path to reposition it so that the sheets may be ejected with the proper orientation.
  • a reproducing apparatus employing the above sheet reversing system for original documents and/or copy sheets is also provided as well as a process for reversing and reproducing sheets.
  • a sheet reversing apparatus and a process employing the apparatus is provided which is capable of turning over sheets to expose a first side and then an opposing side for processing.
  • the apparatus may include means for processing the sides of the sheet.
  • the sheet reversing apparatus includes means for storing the sheets after they have been processed on the first side.
  • the storage means comprises a web in the form of a roll wherein the sheets are supported between adjacent layers of the web.
  • the apparatus also includes means for delivering the sheets from the storage means to a processing means with the opposing side of the sheet being oriented for processing by the processing means.
  • the delivering means preferably includes a recycling member which deflects the web through an arcuate path to reposition the web so that the sheet may be ejected from the storage roll with the opposing side oriented for processing.
  • the web material is comparatively thin so that a large number of sheets can be stored in this manner without having the storage roll become too large in diameter.
  • the sheet reversing apparatus is used in accordance with one embodiment of this invention in a reproducing machine wherein it is desired to produce an image on both sides of the sheet.
  • the apparatus may be employed in such a machine for reversing the orientation of the copy sheets and/or the original documents.
  • the process in accordance with this invention includes processing the sheets on a first side, storing the sheets between adjacent layers of a web, deflecting the web through a desired path to deliver the sheets oriented for processing on their opposing sides.
  • the processing may comprise reproducing an original.
  • the aforenoted sheet reversing apparatus and process and the reproducing machines and reproducing processes of this invention provide an improved duplexing mode of operation. Problems of multi-feeding associated with various of the prior art devices for duplexing are avoided in accordance with this invention since the copy sheets and/or the documents are spaced along the web in the sequence in which they are to be' acted upon so that there is no possibility of multifeeding. This is a particularly important improvement since multi-feeding in a duplexing operation is disastrous, since it results in an improper sequence of images on the respective sheets.
  • FIG. 1 is a schematic view of an automatic reproducing machine incorporating the sheet reversing apparatus of this invention.
  • FIG. 2 is a perspective view of the recycling member which forms part of the reversing apparatus.
  • FIG. 3 shows a series of schematic views illustrating the operation of the recycling member.
  • FIG. 4 shows a schematic view of the reproducing apparatus of FIG. 1 wherein the reversing apparatus is positioned to deliver the sheets for processing on the opposing side of the sheet.
  • FIG. 1 there is shown by way of example an electrostatographic reproducing machine 1 which incorporates the improved sheet reversing apparatus 2 of the present invention.
  • the reproducing machine l depicted in FIG. 1 illustrates the various components utilize'd therein for xerographically reproducing copies from an original document.
  • the sheet reversing apparatus of the present invention is particularly well adapted for use in an automatic xerographic reproducing machine 1, it should become evident from the following description that it is equally well suited for use in a wide variety of processing systems including other electrostatographic systems and it is not necessarily limited in its application to the particular embodiment or embodiments shown herein.
  • the reproducing machine illustrated in FIG. 1 employs an image recording drum-like member 10, the outer periphery of which is coated with a suitable photoconductive material 11.
  • a suitable photoconductive material is disclosed in U.S. Pat. No. 2,970,906, issued to Bixby in 1961.
  • the drum 10 is suitably journaled for rotation within a machine frame (not shown) by means of a shaft 12 and rotates in the direction indicated by arrow 13, to bring the image retaining surfacethereon past a plurality of xerographic processing stations.
  • Suitable drive means (not shown) are provided to power and coordinate the motion of the various cooperating machine components whereby a faithful reproduction of the original input scene information is recorded upon a sheet 14 of final support material such as paper or the like.
  • FIG. 1 The various processing stations for producing a copy of an original are herein represented in FIG. 1 as blocks A to E.
  • the drum 10 moves photoconductive surface 11 through charging station A.
  • charging station A an electrostatic charge'is placed uniformly over the photoconductive surface 11 of the drum l preparatory to imaging.
  • the charging may be provided by a corona generating device of a type described in U.S. Pat. No. 2,836,725, issued to Vyverberg in 1958.
  • drum 10 rotates the electrostatic latent image recorded on the photoconductive surface 11 to development station C wherein a conventional developer mix is applied to the photoconductive surface 11 of the drum l0 rendering the latent image visible.
  • a suitable development station is disclosed in U.S. Pat. No. 3,707,947, issued to Reichart in 1973.
  • the patent describes a magnetic brush development system utilizing a magnetizable developer mix having carrier granules and a toner colorant.
  • the developer mix is continuously brought through a directional flux field to'form a brush thereof.
  • the electrostatic'latent image recorded on photoconductive surface 11 is developed by bringing the brush of developer mix into contact therewith. 4
  • the developed image on the photoconductive surface 11 is then brought into contact with a sheet 14 of final support material within a transfer station D and the toner image is transferred from the photoconductive surface 11 to the contacting side of the final sup port sheet 14.
  • the final support material may be paper, plastic, etc., as desired.
  • the sheet with the image thereon is advanced to a suitable fuser 15 which coalesces the transferred powder image thereto.
  • suitable fuser is described in U.S. Pat. No. 2,701,765, issued to Codichini, et al. in 1955. After the fusing process the sheet 14 is advanced by rolls 16 to catch tray 17 for subsequent removal therefrom by-the machine operator.
  • the toner powder Although a preponderance of the toner powder is transferred'to the final support material 14, invariably some residual toner remains on the photoconductive surface 11 after the transfer of toner powder image to the final support material 14.
  • the residual toner particles remaining on the photoconductive surface 11 after the transfer operation are removed from the drum 10 as it moves through cleaning station E.
  • the neutralized toner particles are then mechanically cleaned from'the photoconductive surface 11 by conventional means as, for example, the use of a brush as set forth in,U.S. Pat. No. 3,572,923, issued to Fisher in 1971.
  • the sheet reversing apparatus 2 in accordance with this invention will now be described in greater detail by reference to FIGS. 1 through 3.
  • the sheet reversing apparatus 2 comprises a long web or belt-type member 20 supported between two rolls 21 and 22.
  • the web member 20 is supported between the rolls 21 and 22 by means of a support plate 23.
  • the roll 21 comprises the supply roll and is driven by a suitable means such as motor 24 which is connected to the roll by means of a clutch 25 such as a conventional electromagnetic clutch.
  • the roll 22 which comprises the storage roll is driven by means of a motor 26 connected to the roll through clutch 27.
  • the storage roll 22 In the storage mode of operation for the sheet reversing apparatus 2, the storage roll 22 is driven and the supply roll 21 is disengaged from its drive motor 24 so that the web is unwound from the supply roll and wound up on the storage roll.
  • the supply roll 21 In the sheet delivering mode of operation the supply roll 21 is driven and the storage roll 22 is disconnected from its drive motor so that the web member is unwound from the storage roll and wound up on the supply roll.
  • the clutches 25 and 27, when disengaged are arranged to provide a frictional drag on the web member 20 to keep it taut between the rolls 21 and 22.
  • Both the supply roll 21 and the storage roll 22 are journaled for rotation in a ma chine frame (not shown).
  • An essential aspect of the present invention comprises a recycling member 30 which acts upon the storage web 20 in a manner which will be described in more detail hereinafter to provide for delivery of the sheets in a reversed or turned over orientation.
  • the recycling member 30 is shown in greater detail. It comprises a substantially cylindrical shell 31 having a longitudinally extending opening 32 therein to provide access to the storage roll 22.
  • a lip 33 is provided extending out tangentially from the shell 31 coextensive with longitudinal opening 33.
  • the lip 33 includes at its free end a bulbous rounded portion 34 coextensive with the lip 33 which is adapted to engage the web 20.
  • End plates 35 and 36 areprovided at the respective ends of the shell 31
  • the shaft 28 of the storage roll 22 extends through each of the end plates 35 and 36.
  • the shell 31 is journaled for rotation about the storage roll shaft 28 by means of bearings 37 in the end plates 35 and 36. As aforenoted, the storage roll 22 is.
  • the drive for the recycling member 30 comprises a gear 38 affixed to end wall 35, which in turn engages the drive gear 39 mounted to the shaft of motor 40.
  • the motor 40 is a reversing type motor and is adapted to rotate the drive gear 39 in opposing directions as shown by the arrow 41. This motion is transmitted by means of meshing gear 38 to the recycling member 30 so that it may be rotated in opposing directions about the storage roll shaft 28 as shown by arrow 42.
  • the recycling member 30 rotates freely about the storage roll shaft 28 and motion is imparted to it only by means of the drive motor 40 which is locked in position by any conventional means when the member 30 is not being actuated.
  • the copy sheets 14 or original documents 16 after processing on a first side are fed from the respective processing station D or 17 onto the moving web member 20 which is being unwound from the supply roll 21 and wound onto the storage roll 22.
  • the sheets are caused to adhere to the web member 20 by .any conventional means aswill be described in more this manner the sheets 14 or 16 are supported between adjacent layers of the web member for storage.
  • sheet reversing is accomplished by rotating the recycling member as shown in FIGS. 3A through 3D.
  • Bulbous portion 34 of the lip 33 engages the web member 20 so as to deflect it through an arcuate path as the recycling member 30 is rotated in the direction shown by arrow 43.
  • the web member20 is caused to wrap around the shell 31 which acts to support and guide it during the sheet delivering mode of operation.
  • a sharp substantially U-shaped bend 44 is formed in the web member 20 between the nip 45 formed between the web and the storage roll 22 and the portion 46 of the web which is supported about the shell 31.
  • This U- shaped portion 44 of the web 20 enhances stripping of the sheets from the web during sheet delivering as will be described in more detail hereinafter.
  • the recycling member 30 is rotated until it achieves an appropriate orientation for sheet delivery to the desired processing station as shown, for example, in FIG. 3D.
  • FIGS. 1 and 3 An examination of FIGS. 1 and 3 will clearly reveal the sheet reversing action of the apparatus 2 of this invention.
  • the sheets 14 or 16 which have been fed to the web 20 with the processed first side F facing down and the opposing side 0 contacting the web are fed from the web with the processed first side F facing up and the opposing side 0 which contacted the web facing down.
  • the supply roll 21 is driven and the storage roll 22 is disengaged.
  • the web member 20 is recoiled on the supply roll 21 and the sheets stored between the adjacent layers of the web 20 on the storage roll 22 are ejected and delivered from the storage roll 22 to the appropriate processing station.
  • FIGS. 1 and 4 A reproducing machine in accordance with this invention incorporating the sheet reversing apparatus 2 will now be described in greater detail by reference to FIGS. 1 and 4.
  • an automatic document feeder 61 which is capable of feeding original documents 16 one at a time to a viewing platen 62 wherein a light image of the original input scene information is created for transmission to the charged photoconductive surface 11 by means of the scanning light source 63 and lens 64 and mirrors 65 and 66 as shown.
  • the document feeder 61 may have any desired configuration as are well known in the art. Particularly useful document feeders are described and shown in US. Pat. Nos. 3,506,257 and 3,567,214. A document feeder substantially of the type described in US. Pat. No. 3,506,257 is shown schematically in FIGS. 1, and 4.
  • the feeder 61 includes a tray 67 for supporting a stack of original documents 16, a belt feeder 68 adapted to frictionally engage the bottom most document in the tray.
  • a sheet separator 69 of the friction retard type is located downstream of'the beltfeeder 68 and is adapted to limit the sheet feeding to a single document at a time.
  • the separator comprises an advancing roll 70 and a retard roll 71.
  • the documents 16 are guided by means of guide plates 72 to a belt transport 73 which positions the document on the platen 62. After the document 15 has been scanned the desired number of times the belt transport 73 is energized to clear the document from the platen 62 and feed it either to the sheet reversing apparatus 2 in accordance with this invention, as shown in FIG. 1, or the discharge tray 74 as shown in FIG. 4.
  • the documents 16 may be affixed to the web member 20 by any desired means such as, for example, the use of a plurality of spaced apart transport rolls similar to those shown for feeding the documents into the apparatus 2.
  • the documents 16 are tacked or caused to adhere to the web 20 electrostatically.
  • the electrostatic tacking in accordance with this invention may be provided by any desired means, as for example, those described in US Pat. Nos. 2,576,882 and 3,717,801.
  • the former patent shows electrostatic tacking of articles to a belt or web type transport device.
  • the latter patent describes the use of a corona generating device for providing the requisite electrostatic tacking.
  • a corona generating device is used to electrostatically tack the sheets 16 to the web 20.
  • the tacking device 80 ispositioned at the entrance to the sheet reversing apparatus 2.
  • the web in accordance with this invention, is preferably formed of a non-conductive material such as Teflon or Mylar to provide effective electrostatic tacking.
  • the electrostatic tacking is effective to maintain the adherence between the sheet 16 and the web 20 even as it passes about the curved portion 81 of the conductive support plate 23.
  • the corona generating device 80 includes a plurality of spaced apart guide wires 82 about its opening to prevent the lead edge of the sheet 16 from jamming into the shield of the device and to properly guide the sheet into contact with the web 20.
  • the apparatus 2 is shown in the sheet delivery mode of operation.
  • the recycling member 30 has been rotated to the sheet delivery position.
  • the web 20 includes a sharp U- shaped bend portion 44 which acts to strip the sheets 16 from the web 20 as they are fed from the storage roll 7 22.
  • sheet delivering is accomplished by disengaging the storage roll clutch 27 and engaging the .Ws'upply roll clutch 25 followed by driving the supply roll 21 to unwind the web from the storage roll 22 and rewind it upon the supply roll.
  • the documents 16 which have been sandwiched between the adjacent layers of the web 20on the storage roll are fed out from the sheet reversing apparatus 2 to the transport belt 73 of the document feeder 61.
  • the transport belt 73 registers the document 16 as it is fed from the web 20 onto the platen 62.
  • the document is oriented so that its opposing side is adapted to be scanned to form a light image thereof in the same manner in which its first side was scanned.
  • the operation of the sheet reversing apparatus 2 of the present invention must be appropriately sequence in order to receive and feed sheets in an appropriately timed relationship to the operation of the desired processing station.
  • the sequencing may be accomplished by conventional means, as for example,
  • sensing devices 83 and 84 to detect the sheets at appropriate points in the apparatus .2 to thereby activate an appropriate control circuit (not shown) of conventional design which would operate the apparatus 2 for the desired timed sequences.
  • a sheet 16 exiting from the document feeder 61 is sensed by an optical sensor 83 which signals the control circuit to activate the sheet reversing apparatus 2 or more specifically todrive the storage roll 22 for a period sufficient to affix the sheet to the web 20.
  • the gate 76 is in its closed positionand the motor 24 for the supply roll'21 is disengaged while the motor 26 for the storage roll 22 is engaged by means of clutch 27.
  • a selector switch (not shown) is employed to signal the control circuit to select and change modes of operation, namely, sheet storage, sheet deliveryan'd changing from one to the other.
  • the mode'changing first includes winding a further portion of the web20 onto the storage roll'22 to insurethat all sheets 16 tacked to the web are wound on theroll prior to rotating the recycling member 30. After this period the-control circuitry would activate the recycling member 30 causing it to rotate to its sheet delivery position. After the recycling member 30 has been properly positioned, the storage roll motor 26 would be disengaged from the storage roll 22 and the supply roll motor 24 would be engaged to the supply roll 21 through clutch 25.
  • the supply roll motor 24 would then be driven until the trailing edge of the sheet 16 is sensed by an optical sensor 84 which signals the control circuit to provide a timed sequence during which the apparatus 2 is inactivated to allow the sheet 16 to be registered on the platen 62 and scanned the desired number of times depending on the number of copies to be produced. After the scanning has been completed, the supply roll motor 24 would again drive the supply roll 21 to cause a second sheet 16 to be ejected from the storage roll 22 and sensed and processed 'as in the case of the previous sheet. In this manner sheets 16 can be stored and delivered from the sheet reversing apparatus 2' of this invention in an appropriate sequence for processing.
  • this sequencing of the movement of the web 20 allows the greatest density of sheets 16 to be stored on the web.
  • Various types of conventional control circuitry and sensing devices could be employed, to obtain the desired sequencing.
  • the aforenoted example is meant to be merely illustrative, and other approaches could be employed, as for example, those set forth in U.S. Pat. No. 1,838,065.
  • the operation of the sheet reversing apparatus 2 of the present invention will be described with respect to the handling of the copy sheets 14.
  • the operation of the apparatus 2 for copy sheets 14 is in most respects similar to that for original documents 16.
  • a copy sheet fromthe stack is separated and transported therefrom by means of a vacuum transport 91 to a pair of registration pinch rolls 92.
  • the pinch rolls 92 feed the sheet 14 in an appropriately timed sequence to the transfer station D of the reproducing machine 1.
  • the developed latent electrostatic image present on the drum 10 is transferred to the sheet 14 under the action of a transfer corona generating device 93.
  • the sheet 14 is transported by means of pinch rolls 94 through a fusing apparatus 15 and then to pinch rolls 16 which transport the sheet to the sheet reversing apparatus 2.
  • a pivoting gate 95 is positioned to close the sheet transport path and guides the sheet 14 into contact with the storage web 20 to which it is tacked by means of the corona generating device 80 as in accordance with the document handling apparatus.
  • the sheet 14 tacked to the storage web 20 is then transported to and wound up on the storage roll 22.
  • the recycling member 30 has been rotated to the sheet delivery position.
  • the copy sheet 14 is delivered from the storage roll 22 by unwinding the web 20 therefrom.
  • the copy sheet 14 is delivered to the pinch rolls 92 which serve to register the sheet in appropriate sequence for transfer of the developed image to the opposing side of the sheetfAfter image transfer, the sheet 14 is then transported to the pinch rolls 94 which transport it through the fuser 15.
  • the pivoting gate 95 is now positioned to deflect the sheet 14 so that it will fall into the output tray 17.
  • the sheets 14 or 16 should remain tacked to the web 20 as they are fed off the storage roll 22.
  • some means is provided for stripping the sheets off the roll 22, as for example, the use of puffers as shown.
  • the puffers 100 provide a stream of air which is effective to strip the sheets 14 or 16 from the roll 22. While a puffer 100 is preferred in accordance with this invention, other approaches could be employed as for example the use of a detacking corona generating device or mechanical stripping fingers.
  • a sheet reversing apparatus 2 which is capable of storing/transporting and delivering sheets so that the sheets may be processed on their first and opposing sides.
  • the sheet reversing apparatus may be employed in conjunction with a document feeding apparatus 61 to enable the documents to be imaged on both their first and opposing sides and similarly it can be employed to enable the copy sheets to be imaged on their first and opposing sides.
  • the apparatus of this invention is adapted to make multiple duplex copies of a plurality of originals in a given arrangement or single duplex copies of a plurality of originals.
  • the plurality of copy sheets for each original are stored on the storage web in the sequence in which they are made and are delivered from the storage web in the same sequence to the transfer station for imaging on their reverse sides.
  • a suitable sorting apparatus as are known in the art, can be employed to obtain fully collated copies of the documents or reports.
  • Storage rolls employed in accordance with this invention are capable of storing in a relatively small volume a comparatively large number of documents or copy sheets. For example, if 200 sheets, mils thick, plus a storage web 5 mils thick, are wound onto a storage roll which is initially 4 inches in diameter, the final diameter of the roller will be approximately 6 inches.
  • the storage capacity of the sheet reversing apparatus of this invention is governed solely by the diameter of the roll which can be accommodated in the machine.
  • the recycling member is rotated to the sheet delivery position over a path of from about 180 to about 360 and more preferably from about 270 to about 360.
  • processing as applied to the work performed on the first and opposing sides of the sheet includes any means or process for acting or operating on the sides of the sheet.
  • sheet reversing refers to the operation of turning over the sheet with respect to a given point or work station to expose the opposing side of the sheet thereto.
  • reversed orientation refers to a sheet which has been turned over with respect to a given point or work station to expose the opposing side of the sheet thereto.
  • sheet and document as used in this application are meant to include both singular and plural sheets and documents irrespective of whether the terms are expressed in the singular or plural form.
  • a sheet reversing apparatus for reorienting sheets so that a first side and an opposing side of the sheets may be operated upon comprising:
  • said affixing means comprises a corona, generating device.
  • said recycling member comprises a substantially cylindrical shell having a longitudinally extending opening therein to provide access to said storage means, a lip extending out tangentially from said shell coextensive with said longitudinal opening and a bulbous rounded portion at the free end of said lip coextensive with said lip, said bulbous rounded portion being adapted to engage said web to deflect it about said arcuate path.
  • a reproducing apparatus for providing an image on a first side and an opposing side of a copy sheet or sheets comprising:
  • said imaging means communicating with said imaging means for storing said sheet following imaging on a first side thereof, said storing means comprising a web wherein the sheet is supported between adjacent layers thereof;
  • An apparatus as in claim 12, wherein the deflection of said web is provided by a recycling member which is adapted to rotate from about 180 to about 360.
  • An apparatus as in claim 16 further including means for affix-ing said sheets to said web.
  • said affixing means comprises a corona generating device.
  • said recycling member comprises a substantially cylindrical shell having a longitudinally extending opening therein to provide access to said storage means, a lip extending out tangentially from said shell coextensive with said longitudinal opening and a bulbous rounded portion at the free end of said lip coextensive with said lip, said bulbous rounded portion being adapted to engage said web to deflect it about said arcuate path.
  • said receiving and storing means comprising a web wherein the document is supported between adjacent layers thereof; and means acting on said web to deliver therefrom the document stored thereon in a reversed orientation to said support surface for imaging the opposing side thereof.
  • said delivering means deflects said'web through an arcuate path to reposition the web so that the sheets may be ejected from the storage means with the opposing side oriented to be operated upon.
  • said recycling member comprises a substantially cylindrical shell having a longitudinally extending opening therein to provide access to said storage means, a lip extending out tangentially from said shell coextensive with said longitudinal opening and a bulbous rounded portion at the free end of said lip coextensive with said lip, said bulbous rounded portion being adapted to engage said web to deflect it about said arcuate path.
  • a reproducing apparatus for forming images on a first and an opposing side of a copy sheet or sheets comprising:
  • a first means communicating with said supporting means are provided for receiving and storing said document after a first side thereof has been reproduced, said first receiving and storing means comprising a web wherein the document is supported between adjacent layers thereof;
  • said apparatus further includes a second means for receiving and storing said copy sheet after said first side has been provided with said reproduction of said first side of said document, said second receiving and storing means comprising a web wherein the sheet is supported between adjacent layers thereof;
  • each of said first and second delivering means deflects said first and second webs through an arcuate path to reposition said webs so that the document or sheet respectively may be ejected from the each of the first and second storage means with the opposing sides oriented to be operated upon.
  • each of said first and second storage means further including means for driving each of said storage rolls for winding said first and second webs upon said storage rolls and storing said document or sheet between the adjacent layers thereof and means for driving each of said supply rolls for winding said first and second webs upon said supply rolls and'unwinding said webs from said storage rolls for ejecting said document or sheet from said storage rolls.
  • An apparatus as in claim 35 further including a conductive means for supporting each of said first and second webs, said support means being positioned be- .tween each of said supply rolls and each of said respective storage rolls.
  • An apparatus as in claim 36 further including a means for affixing said document or sheet to each of said webs.
  • each of said recycling members is adapted to form a sharp bend in each of said webs to aid in stripping said documents or sheets from their respective said webs during sheet delivery.
  • each of said recycling members comprises a substantially cylindrical shell having a longitudinally extending opening therein to provide access to said storage means, a lip extending out tangentially from said shell coextensive with said longitudinal opening and a bulbous rounded portion at the free end of said lip coextensive with said lip, said bulbous rounded portion being adapted to engage said web to deflect it about said arcuate path.
  • a process of reversing the orientation of a sheet so that a first and an opposing side of the sheet may be operated upon comprising:
  • a process as in claim 42, wherein said storing step comprises winding up said web on a roll with said sheets sandwiched between adjacent layers thereof.
  • step comprises unwinding said web from said roll to eject the sheets therefrom.
  • step of deflecting said web further includes forming a sharp bend therein which operates to strip said tacked sheets from said web during said delivery step.
  • a process as in claim 48 wherein prior to said storing step a light image of the original input scene information on said first side of said sheet is formed and wherein subsequent to said delivery step a light image of the original input scene information on the opposing side of said sheet is formed.
  • each of said first and second delivering means deflects said first and second webs through a path to reposition said webs so that the document or sheet respectively may be ejected from each of the first and second storage means with the opposing sides oriented to be operated upon.

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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Discharge By Other Means (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Counters In Electrophotography And Two-Sided Copying (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Conveyance By Endless Belt Conveyors (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US390650A 1973-08-22 1973-08-22 Sheet reversing apparatus and a duplex reproducing apparatus employing same Expired - Lifetime US3862802A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US390650A US3862802A (en) 1973-08-22 1973-08-22 Sheet reversing apparatus and a duplex reproducing apparatus employing same
CA198,829A CA1037543A (en) 1973-08-22 1974-05-03 Sheet reversing apparatus and a duplex reproducing apparatus employing same
DE2425207A DE2425207C3 (de) 1973-08-22 1974-05-24 Vorrichtung zum Speichern und Abgeben von Blättern
NLAANVRAGE7408315,A NL182250C (nl) 1973-08-22 1974-06-20 Inrichting voor het tweezijdig behandelen van bladvormig materiaal.
SU7402042240A SU579954A3 (ru) 1973-08-22 1974-07-08 Репродуцирующий аппарат дл копировани с обеих сторон листов
SE7410355A SE406754B (sv) 1973-08-22 1974-08-14 Arkvendningsanordning
BE147649A BE818894A (fr) 1973-08-22 1974-08-14 Procede et dispositif de retournement d'une feuille et leur application a une machine de reproduction de documents
JP49093803A JPS5742861B2 (ru) 1973-08-22 1974-08-15
GB36395/74A GB1481429A (en) 1973-08-22 1974-08-19 Apparatus for storing at least one sheet
FR7428891A FR2257523B1 (ru) 1973-08-22 1974-08-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US390650A US3862802A (en) 1973-08-22 1973-08-22 Sheet reversing apparatus and a duplex reproducing apparatus employing same

Publications (1)

Publication Number Publication Date
US3862802A true US3862802A (en) 1975-01-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
US390650A Expired - Lifetime US3862802A (en) 1973-08-22 1973-08-22 Sheet reversing apparatus and a duplex reproducing apparatus employing same

Country Status (10)

Country Link
US (1) US3862802A (ru)
JP (1) JPS5742861B2 (ru)
BE (1) BE818894A (ru)
CA (1) CA1037543A (ru)
DE (1) DE2425207C3 (ru)
FR (1) FR2257523B1 (ru)
GB (1) GB1481429A (ru)
NL (1) NL182250C (ru)
SE (1) SE406754B (ru)
SU (1) SU579954A3 (ru)

Cited By (33)

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US3963345A (en) * 1975-03-24 1976-06-15 Xerox Corporation Pre-collation copying
FR2305305A1 (fr) * 1975-03-24 1976-10-22 Xerox Corp Dispositif de manipulation automatique de documents pour une machine de reproduction de documents a pre-classement notamment
US4008956A (en) * 1975-03-24 1977-02-22 Xerox Corporation Document handling system for pre-collation copying
JPS52149128A (en) * 1976-06-01 1977-12-12 Eastman Kodak Co Copyin machine that produce copies in sequence of pages from originals having both sides
JPS52149127A (en) * 1976-06-01 1977-12-12 Eastman Kodak Co Copying machine that prodvce both sides copy in sequnce of pages
US4066252A (en) * 1975-05-16 1978-01-03 Agfa-Gevaert, Ag Copying apparatus
US4080060A (en) * 1975-08-01 1978-03-21 Addressograph-Multigraph Corporation Copy system
US4098551A (en) * 1975-02-13 1978-07-04 Canon Kabushiki Kaisha Both side copying machine
DE2828669A1 (de) * 1977-08-18 1979-03-01 Xerox Corp Verfahren und system zum automatischen vorgeordneten doppelseitigen umlaufkopieren eines satzes doppelseitiger dokumente
US4158500A (en) * 1977-02-14 1979-06-19 Eastman Kodak Company Apparatus for producing collated copies in page sequential order
JPS5512299U (ru) * 1978-07-03 1980-01-25
US4193685A (en) * 1979-03-30 1980-03-18 Terminal Data Corporation Fixed message carrier
JPS5593164A (en) * 1978-12-29 1980-07-15 Ibm Printer for both face printing
JPS55111960A (en) * 1977-02-14 1980-08-29 Eastman Kodak Co Feeder for documents to be copied
US4231561A (en) * 1977-02-10 1980-11-04 Ricoh Company, Ltd. Auto document feeder for use with duplex copying machine
US4348101A (en) * 1980-09-30 1982-09-07 Sperry Corporation Duplex printing apparatus
US4431303A (en) * 1981-11-04 1984-02-14 Xerox Corporation Sheet handling apparatus for use with a very high speed duplicator
US4438618A (en) * 1980-07-15 1984-03-27 Ferag Ag Apparatus for stacking printed products, such as newspapers, periodicals and the like, arriving in an imbricated product stream
US4494359A (en) * 1981-02-03 1985-01-22 Ferag Ag Method and apparatus for the long-term pressing of printed products especially newspapers
US4512651A (en) * 1977-07-05 1985-04-23 Eastman Kodak Company Collating document feeder and reproduction apparatus having copy duplexing capabilities
USRE32284E (en) * 1976-01-15 1986-11-11 Xerox Corporation Document storage and transport apparatus
US4660963A (en) * 1985-12-30 1987-04-28 Xerox Corporation Auto duplex reproduction machine
USRE32541E (en) * 1976-01-15 1987-11-10 Xerox Corporation Fluidic feeding of documents to an exposure station
US4708468A (en) * 1985-12-30 1987-11-24 Xerox Corporation Self adjusting paper guide
US4708462A (en) * 1985-12-30 1987-11-24 Xerox Corporation Auto duplex reproduction machine
US5028965A (en) * 1988-09-22 1991-07-02 Minolta Camera Kabushiki Kaisha Copying system having a sheet refeed device
US5099269A (en) * 1989-02-14 1992-03-24 Minolta Camera Kabushiki Kaisha Copying apparatus provided with a roll-up type sheet refeeding unit
US5374049A (en) * 1994-05-27 1994-12-20 Xerox Corporation Compact inverter
US5415391A (en) * 1994-05-31 1995-05-16 Xerox Corporation Low cost compact inverter
US5600931A (en) * 1992-09-25 1997-02-11 Plannja Hardtech Ab Structural beam for supporting and reinforcing a structure
US6297886B1 (en) * 1996-06-05 2001-10-02 John S. Cornell Tandem printer printing apparatus
US6476923B1 (en) 1996-06-05 2002-11-05 John S. Cornell Tandem printer printing apparatus
US6493098B1 (en) 1996-06-05 2002-12-10 John S. Cornell Desk-top printer and related method for two-sided printing

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Publication number Priority date Publication date Assignee Title
JPS54130939A (en) * 1978-03-31 1979-10-11 Ricoh Co Ltd Automatic original feeder for copier
CH652105A5 (de) * 1981-07-15 1985-10-31 Grapha Holding Ag Verfahren und vorrichtung zum speichern von druckbogen.
GB2122973B (en) * 1982-04-22 1986-04-09 Fuji Xerox Co Ltd Sheet supplying device for two-sided copying
US4487506A (en) * 1982-08-23 1984-12-11 Xerox Corporation Reversing roll inverter with bypass capability
JPS5875163A (ja) * 1982-09-08 1983-05-06 Canon Inc 両面原稿制御方法
JPS5977454A (ja) * 1983-05-13 1984-05-02 Canon Inc 両面複写制御装置
JPS5977455A (ja) * 1983-05-13 1984-05-02 Canon Inc 両面複写装置
US4727398A (en) * 1983-07-22 1988-02-23 Canon Kabushiki Kaisha Automatic original feeding apparatus

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US2194808A (en) * 1938-09-14 1940-03-26 Jr Frank D Pooley Machine for photographing documents
US3222057A (en) * 1961-11-29 1965-12-07 Joseph M Couri Apparatus and method for controlling and receiving and/or dispensing paper money
US3227444A (en) * 1963-08-30 1966-01-04 Eastman Kodak Co Reversal unit for document copying apparatus
US3337213A (en) * 1965-07-02 1967-08-22 Hewlett Packard Co Transport apparatus
US3737230A (en) * 1970-12-07 1973-06-05 Oce Van Der Grinten Nv Web transport systems for copying machines
US3743200A (en) * 1970-08-04 1973-07-03 Radiologie Cie Gle Magazine for bare film sheets for use in x-ray film handling apparatus

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
US2194808A (en) * 1938-09-14 1940-03-26 Jr Frank D Pooley Machine for photographing documents
US3222057A (en) * 1961-11-29 1965-12-07 Joseph M Couri Apparatus and method for controlling and receiving and/or dispensing paper money
US3227444A (en) * 1963-08-30 1966-01-04 Eastman Kodak Co Reversal unit for document copying apparatus
US3337213A (en) * 1965-07-02 1967-08-22 Hewlett Packard Co Transport apparatus
US3743200A (en) * 1970-08-04 1973-07-03 Radiologie Cie Gle Magazine for bare film sheets for use in x-ray film handling apparatus
US3737230A (en) * 1970-12-07 1973-06-05 Oce Van Der Grinten Nv Web transport systems for copying machines

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098551A (en) * 1975-02-13 1978-07-04 Canon Kabushiki Kaisha Both side copying machine
FR2305305A1 (fr) * 1975-03-24 1976-10-22 Xerox Corp Dispositif de manipulation automatique de documents pour une machine de reproduction de documents a pre-classement notamment
US4008956A (en) * 1975-03-24 1977-02-22 Xerox Corporation Document handling system for pre-collation copying
US3963345A (en) * 1975-03-24 1976-06-15 Xerox Corporation Pre-collation copying
US4108547A (en) * 1975-03-24 1978-08-22 Xerox Corporation Document loading for copying
US4066252A (en) * 1975-05-16 1978-01-03 Agfa-Gevaert, Ag Copying apparatus
US4080060A (en) * 1975-08-01 1978-03-21 Addressograph-Multigraph Corporation Copy system
USRE32541E (en) * 1976-01-15 1987-11-10 Xerox Corporation Fluidic feeding of documents to an exposure station
USRE32284E (en) * 1976-01-15 1986-11-11 Xerox Corporation Document storage and transport apparatus
JPS5641996B2 (ru) * 1976-06-01 1981-10-01
US4140387A (en) * 1976-06-01 1979-02-20 Eastman Kodak Company Apparatus for producing collated copies from two sided originals
FR2353886A1 (fr) * 1976-06-01 1977-12-30 Eastman Kodak Co Copieur pour produire des copies recto-verso paginees
JPS52149128A (en) * 1976-06-01 1977-12-12 Eastman Kodak Co Copyin machine that produce copies in sequence of pages from originals having both sides
JPS52149127A (en) * 1976-06-01 1977-12-12 Eastman Kodak Co Copying machine that prodvce both sides copy in sequnce of pages
FR2353887A1 (fr) * 1976-06-01 1977-12-30 Eastman Kodak Co Reproduction de documents recto-verso
JPS5641107B2 (ru) * 1976-06-01 1981-09-25
US4231561A (en) * 1977-02-10 1980-11-04 Ricoh Company, Ltd. Auto document feeder for use with duplex copying machine
JPS6357790B2 (ru) * 1977-02-14 1988-11-14 Eastman Kodak Co
JPS55111960A (en) * 1977-02-14 1980-08-29 Eastman Kodak Co Feeder for documents to be copied
US4158500A (en) * 1977-02-14 1979-06-19 Eastman Kodak Company Apparatus for producing collated copies in page sequential order
US4512651A (en) * 1977-07-05 1985-04-23 Eastman Kodak Company Collating document feeder and reproduction apparatus having copy duplexing capabilities
US4459013A (en) * 1977-08-18 1984-07-10 Xerox Corporation Duplex/simplex precollation copying system
DE2828669A1 (de) * 1977-08-18 1979-03-01 Xerox Corp Verfahren und system zum automatischen vorgeordneten doppelseitigen umlaufkopieren eines satzes doppelseitiger dokumente
FR2400724A1 (fr) * 1977-08-18 1979-03-16 Xerox Corp Procede et appareil de reprographie duplex/simplex avec pre-assemblage
DE2858789C2 (ru) * 1977-08-18 1993-05-27 Xerox Corp., Rochester, N.Y., Us
JPS5512299U (ru) * 1978-07-03 1980-01-25
JPS644114Y2 (ru) * 1978-07-03 1989-02-02
JPS5637552B2 (ru) * 1978-12-29 1981-09-01
JPS5593164A (en) * 1978-12-29 1980-07-15 Ibm Printer for both face printing
US4193685A (en) * 1979-03-30 1980-03-18 Terminal Data Corporation Fixed message carrier
US4438618A (en) * 1980-07-15 1984-03-27 Ferag Ag Apparatus for stacking printed products, such as newspapers, periodicals and the like, arriving in an imbricated product stream
US4348101A (en) * 1980-09-30 1982-09-07 Sperry Corporation Duplex printing apparatus
US4494359A (en) * 1981-02-03 1985-01-22 Ferag Ag Method and apparatus for the long-term pressing of printed products especially newspapers
US4431303A (en) * 1981-11-04 1984-02-14 Xerox Corporation Sheet handling apparatus for use with a very high speed duplicator
US4660963A (en) * 1985-12-30 1987-04-28 Xerox Corporation Auto duplex reproduction machine
US4708462A (en) * 1985-12-30 1987-11-24 Xerox Corporation Auto duplex reproduction machine
US4708468A (en) * 1985-12-30 1987-11-24 Xerox Corporation Self adjusting paper guide
US5028965A (en) * 1988-09-22 1991-07-02 Minolta Camera Kabushiki Kaisha Copying system having a sheet refeed device
US5099269A (en) * 1989-02-14 1992-03-24 Minolta Camera Kabushiki Kaisha Copying apparatus provided with a roll-up type sheet refeeding unit
US5600931A (en) * 1992-09-25 1997-02-11 Plannja Hardtech Ab Structural beam for supporting and reinforcing a structure
US5374049A (en) * 1994-05-27 1994-12-20 Xerox Corporation Compact inverter
US5415391A (en) * 1994-05-31 1995-05-16 Xerox Corporation Low cost compact inverter
US6297886B1 (en) * 1996-06-05 2001-10-02 John S. Cornell Tandem printer printing apparatus
US6476923B1 (en) 1996-06-05 2002-11-05 John S. Cornell Tandem printer printing apparatus
US6493098B1 (en) 1996-06-05 2002-12-10 John S. Cornell Desk-top printer and related method for two-sided printing

Also Published As

Publication number Publication date
NL7408315A (ru) 1974-09-25
DE2425207A1 (de) 1975-02-27
DE2425207B2 (de) 1978-11-16
GB1481429A (en) 1977-07-27
JPS5742861B2 (ru) 1982-09-10
BE818894A (fr) 1974-12-02
SE7410355L (ru) 1975-02-24
FR2257523B1 (ru) 1978-12-29
CA1037543A (en) 1978-08-29
SU579954A3 (ru) 1977-11-05
DE2425207C3 (de) 1979-07-19
FR2257523A1 (ru) 1975-08-08
JPS5051332A (ru) 1975-05-08
NL182250C (nl) 1988-02-01
SE406754B (sv) 1979-02-26

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