EP0478820B1 - Imprimante ou copieur pour l'impression simple face et double face en une ou plusieurs couleurs - Google Patents

Imprimante ou copieur pour l'impression simple face et double face en une ou plusieurs couleurs Download PDF

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Publication number
EP0478820B1
EP0478820B1 EP19900118889 EP90118889A EP0478820B1 EP 0478820 B1 EP0478820 B1 EP 0478820B1 EP 19900118889 EP19900118889 EP 19900118889 EP 90118889 A EP90118889 A EP 90118889A EP 0478820 B1 EP0478820 B1 EP 0478820B1
Authority
EP
European Patent Office
Prior art keywords
transfer
printing
region
channel
printer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19900118889
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German (de)
English (en)
Other versions
EP0478820A1 (fr
Inventor
Klaus Dipl.-Ing. Kümmel
Hans Manzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Production Printing Germany GmbH and Co KG
Original Assignee
Wincor Nixdorf International GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wincor Nixdorf International GmbH filed Critical Wincor Nixdorf International GmbH
Priority to DE59010037T priority Critical patent/DE59010037D1/de
Priority to EP19900118889 priority patent/EP0478820B1/fr
Publication of EP0478820A1 publication Critical patent/EP0478820A1/fr
Application granted granted Critical
Publication of EP0478820B1 publication Critical patent/EP0478820B1/fr
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
    • 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
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies

Definitions

  • the invention relates to a printing or copying device for one or multi-color simplex and duplex printing and a method for producing multi-color prints with such a printing or copying device.
  • EP-B1 0 154 695 describes a printing or copying device for multi-color and front and back printing, which consists of several devices arranged one behind the other, which are operated simultaneously.
  • the recording medium emerging from the paper exit area of the previous device is fed to the paper entry area of the subsequent device.
  • a switchable deflection device for the paper web is arranged between the devices.
  • JP-A-61 117 582 discloses an electrophotographic recording device which is suitable only for operation with single sheets.
  • the recording device contains an intermediate carrier designed as a photoconductor drum with two front and rear transfer belts which are arranged on both sides of a transport channel and can be pivoted on and off the photoconductor drum and which surround heated rollers serving as transfer and fixing stations.
  • To print a single sheet on both sides the toner image on the back is first transferred to the back transfer belt, then the toner image on the front is transferred to the front transfer belt.
  • the toner images are then transferred to a single sheet via the transfer belts in the area of the heated rollers and are fixed there at the same time.
  • the individual sheets are fed to a transport channel arranged between the transfer belts from a storage container arranged on the side of the device, specifically when the transfer belts are pivoted away from the photoconductor.
  • the single sheets are transported through the pivoting area of the transfer belts.
  • the aim of the invention is therefore to provide a printing or copying device for simplex and duplex printing which, in terms of its basic structure, is suitable both for processing single sheets and of continuous paper.
  • Another object of the invention is to design the printing or copying machine in such a way that single-color or multi-color simplex and duplex printing is possible.
  • the record carrier preferably consists of single sheets. However, a continuous paper recording medium can also be used.
  • the single sheets fed to the paper transport channel can be printed face-down (face down) or face-up (face up).
  • the entire device enables variable paper output and thus flexible adaptation to paper post-processing.
  • thermo-adhesive transfer ribbons can be used as transfer ribbons in the transfer printing stations. If thermo-adhesive transfer tapes are used, it is possible to use the transfer printing area itself as the fixing area.
  • the entire device is compact and has a construction that allows the consumables, such as. B. toner or release oil for the fuser from one side of the device and also from this side without removing the units of the device to replace the transfer ribbons.
  • the upper transfer belt is stopped after transfer of the individual images from the intermediate carrier to the transfer belt and moved in the opposite direction for transfer printing onto the recording medium. This creates a gap in the paper sequence.
  • the fixing roller speed is advantageously lower than the actual process speed and thus a secure fixing is possible.
  • An electrophotographic printing device shown schematically in FIG. 1 contains a band-shaped intermediate carrier 10 in the form of a photoconductor, which is guided in an electrically motorized manner via guide rollers 11.
  • the various units for the electrophotographic process are grouped around the intermediate carrier 10. These are essentially: a charging device LE in the form of a charging corotron for charging the intermediate carrier; a character generator ZG with a light-emitting diode comb for character-dependent exposure of the intermediate carrier; Developer stations EY, EM, EC and EB for coloring the charge-dependent discharged image on the intermediate carrier 10 using colored toner.
  • the developer station EY contains yellow toner, the developer station EM toner with the color magenta, the developer station EC toner with the color cyan and the developer station EB black toner.
  • a cleaning station RS is provided with a cleaning brush 13 integrated therein.
  • the developer stations EY, EM, EC and EB are designed to be interchangeable and can, for. B. pulled out of the device via slide guides and inserted into the device. They are constructed in the usual way and contain developer rollers 14 for coloring the charge image as well as guide rollers 11/1 to 11/4 which can be swiveled in and out for swiveling the intermediate carrier 10 onto and off the developer rollers 14 by means of electromagnetic swivel devices 15.
  • the swivel devices 15 can, for . B. as plunger magnets or z. B. be designed as a swing magnet. They are used to couple the developer stations EY, EM, EC and EB individually to the intermediate carrier 10, controlled by a controller of the device.
  • the transfer printing stations U1 and U2 each contain a ribbon-shaped transfer element 16, which in the exemplary embodiment shown is designed as a photoconductor ribbon.
  • the transfer elements 16 are driven by an electric motor and are mounted on guide rollers 11.
  • the transfer printing stations have a transfer area T, which serves to transfer toner images on the intermediate carrier 10 to the transfer elements 16.
  • pivotable guide rollers 11/5 and 11/6 are provided, by means of which the intermediate carrier 10 can be pivoted in and out of the transfer elements 16 in the transfer areas T.
  • Electromotive swivel devices 15 are provided to transfer a toner image from the intermediate carrier 10 to the transfer elements 16 there is a transfer printing corotron 17 in the transfer area T opposite the guide rollers 11/5 and 11/6 Electromotive swivel devices 15 are provided.
  • the intermediate carrier 10 is brought into contact with the transfer element 16 and transferred to the transfer element 16 via the transfer printing corotron 17 with the aid of charge forces.
  • the transfer element 16 is moved in the area of the transfer areas T in synchronism with the intermediate carrier 10.
  • An additional corotron 19 is arranged downstream of the transfer area T in the direction of movement during the transfer of the transfer element. It serves to strengthen the toner image located on the transfer element 16.
  • the arrangement of such an additional corotron 19 can be favorable if the printing device is used for four-color printing, in which several individual images of different colors are printed one above the other, and consequently a toner image passes through the transfer area T four times.
  • the transfer printing stations U1 and U2 have transfer printing areas UB. These exist in each case from a guide roller 15 with a transfer printing corotron 17 arranged opposite the guide roller 15.
  • the transfer printing area UB1 of the first transfer printing station is arranged for printing on a front side of the recording medium on one side of a transport channel K and the transfer printing area UB2 of the second transfer printing station for printing a rear side of a recording medium on the other side of the transport channel K.
  • the transport channel K is used to feed the recording medium to the transfer printing areas UB1 and UB2.
  • Cleaning stations RS are provided for cleaning the transfer elements 16 after transfer printing. These are designed in accordance with the cleaning station RS of the intermediate carrier 10. They also contain a cleaning brush 13 and cleaning corotron 20 for loosening the toner before cleaning or for unloading the transfer element 16 or the intermediate carrier 10 before cleaning.
  • the transfer elements 16 and the intermediate carrier 10 are driven via electric motors M1 to M4 (FIG. 7) which are arranged on the bottom of the device and are coupled to the guide rollers 11 via belt drives 21.
  • the transfer element 16 of the lower transfer station U1 is only moved in one direction (arrow direction). The direction of movement corresponds to the movement of the transfer element 16 during the transfer of a toner image.
  • the transfer element 16 of the upper transfer station U2 can be moved in both directions.
  • the transfer element 16 of the upper transfer printing station U2 is moved with the intermediate carrier 10 in the direction of the arrow.
  • the contact of the transfer element 16 with the intermediate carrier 10 is released and the transfer element 16 of the transfer station U2 is reversed to transfer the toner image onto the record carrier (arrow direction).
  • the pivotable guide rollers 11/5 and 11/6 are therefore used for the alternative generation of a transfer position in which toner images are transferred from the intermediate carrier 10 to the transfer element 16 and a standby position in which the intermediate carrier 10 and transfer element 16 are spaced apart from one another in such a way that no toner images are transferred.
  • a sheet-shaped recording medium 22 is fed to the transfer printing areas UB1 and UB2 via the transport channel K.
  • the transport channel K consists of the actual pressure channel KD and a feed channel KZ.
  • the individual sheets 22 are fed one after the other via the feed channel KZ to the pressure channel KD.
  • the mouth area is arranged in a device area delimited by transfer printing stations U1 and U2 and the intermediate carrier 10.
  • a direction deflection device for the recording medium is arranged in this mouth region.
  • the printing device is designed as a single-sheet printer, this consists of fixed stops 23 and movable stops 24 and a paper transport device PT.
  • the fixed stops 23 are fixedly arranged at the rear end of the feed channel KZ in the mouth area between the feed channel and the pressure channel. They limit the rear stop of a single sheet 22 fed via the feed channel KZ.
  • the stops 24, which can be pivoted in and out, are located in the middle of the pressure channel KD in the mouth area. The pivoting in and out is carried out by means of electric motors or M0 magnets.
  • the pressure channel KD is designed for the parallel transport of at least two single sheets 22/1 and 22/2 of a first format, in this case A4, arranged next to one another and for the transport of single sheets of a second format, in this case A3.
  • A4 format For the parallel transport of two single sheets in A4 format, the single sheets are fed one after the other via the storage area VB. In doing so, a first one comes across Sheet 22/1 with its lateral edges on the fixed stop 23. Then the movable stops 24 are moved centrally into the mouth area between the pressure channel KD and the supply channel KZ, so that the second single sheet 22/2 with its lateral edges lies against the movable stops 24 is coming.
  • the paper transport device consists of motor-driven paper transport rollers 26 which transport single sheets in the printing channel KD and of paper transport belts 25 which are mounted on rollers and which extend into the feed channel KZ. Paper transport belts 25 and paper transport rollers 26 are arranged perpendicular to one another. The paper conveyor belts 25 capture the single sheets 22 in the feed channel KZ and place them on the stops 23 and 24. The individual sheets, which are arranged next to one another in parallel, are then transported further via the paper transport rollers 26.
  • the movable stops 24 are moved out of the transport area of the paper transport channels.
  • a fed A3 sheet thus comes into contact with the fixed stops 23 with its upper edge. It is then transported further in landscape format and printed in landscape format.
  • the orientation of the applied printed image on the single sheets can be done with the help of an electronic page turning device, which is designed in the usual way. This makes it possible to describe sheets specified in landscape format in such a way that a single sheet described in portrait format is created.
  • Such side turning devices are generally known.
  • a deflecting beam 27 ( Figure 3) may be arranged.
  • This deflecting bar 27 can consist of a paper guide roller rotated by 45 ° with respect to the paper feed direction, which deflects the continuous paper by 90 ° and feeds the transfer printing areas.
  • 27 paper transport rollers can be arranged in front of and behind the deflecting bar in the direction of movement of the paper.
  • a thermal printing fixing station FX is arranged to fix the toner images on the recording medium. It has two z. B. heatable via radiator fixing rollers 28 with a feed region upstream of the fixing rollers in the direction of movement of the recording medium. In the feed area, the record carrier is guided contactlessly over an air cushion.
  • a plurality of air outlet nozzles 30 are arranged along a guide channel 29. The air outlet nozzles 30 are supplied with air via a fan 31. The air supplied can be preheated so that the recording medium is preheated in the region of the guide channel 29.
  • the air outlet nozzles 30 are inclined somewhat in the direction of movement of the recording medium in the direction of the fixing rollers 28.
  • the length of the guide channel 29 When dimensioning the length of the guide channel 29, ie the distance between the transfer printing areas UB2 and the fixing rollers 28 it must be taken into account that before the recording medium is fed to the fixing rollers 28, the recording medium must be spaced from the transfer printing area UB2.
  • the length of the guide channel 29 therefore depended on the format size used.
  • paper transport rollers 32 are arranged, which feed the fixed recording media to a stacking device 33.
  • a device for paper post-processing can also be provided which, for. B. according to the representation of Figure 3, the individual sheets laterally stacked job by job.
  • the stacking device 33 or the device for paper post-processing can be designed as an independent unit mounted on rollers. Depending on the printer functions, it is applied or moved to an output slot 34.
  • thermal printing fixing station instead of the thermal printing fixing station described, other conventional thermal printing fixing stations can also be used. It is advantageous in any case to ensure that the transport channel K, pressure channel KD and guide channel 29 lead straight through the transfer areas of the transfer stations into the fixing station. This ensures gentle handling of the record carrier and prevents deformation of the record carrier.
  • the transfer elements 16 of the transfer printing stations U1 and U2 are designed as so-called thermo-adhesive transfer tapes. Such thermo-adhesive transfer tapes are such. B. generally known from GB-A-2 040 226.
  • the transfer elements 16 consist of a rubber or silicone band mounted on deflection rollers 35, which touches the intermediate carrier 10 in the transfer area T.
  • the intermediate carrier 10 can be swiveled in and out on the transfer belt 16 via an electromotive device 15 in connection with a guide roller 11/6.
  • the temperature in the transfer region T is set such that the toner of the toner image is in a pasty state and is transferred from the intermediate carrier 10 to the transfer element 16 by adhesive force.
  • the toner image located on the transfer element 16 is heated so strongly in a downstream heating station 36 with heating elements arranged therein that the toner is almost liquefied, but is still in the solid state.
  • the transfer printing area UX which is also designed as a fixing area (contact fixing station)
  • the almost liquid toner image is transferred to the recording medium.
  • the transfer printing and fixing area UX contains two deflection rollers 35/1 and 35/2, over which the transfer elements 16 are each guided.
  • the deflection roller 35/1 is assigned to the lower transfer station U1 and the deflection roller 35/2 to the upper transfer station U2.
  • the deflection rollers 35/1 and 35/2 are coupled to electromotive swivel devices 15 and can be swiveled in and out relative to one another.
  • the recording medium is passed between the deflection rollers 35/1 and 35/2 with the transfer elements guided above and fixed by heat and pressure. If necessary, it is possible to preheat the recording medium with a heating device before it is fed to the transfer printing and fixing area U
  • the transfer elements 16 are cleaned in a cleaning station RS.
  • the cleaning station RS contains a cleaning roller 37 with the associated pressure roller 38.
  • the cleaning roller 37 mechanically or chemically removes toner residues from the carrier element 16, which are then stripped from the cleaning roller 37 on a suitably designed flow element or a cleaning belt.
  • the combined transport and temperature stabilization unit TT downstream of the cleaning station RS contains electrically heated or cooled rollers 39 which set the transfer elements 16 to a constant temperature.
  • the transfer element 16 of the upper transfer station U2 can be reversed with regard to its direction of movement.
  • the transfer element 16 is moved in the direction of the intermediate carrier 10, the deflection roller 35/2 being lifted off.
  • the deflection roller 35/2 is in turn lowered and the intermediate carrier 10 is pivoted away from the transfer element 16.
  • the electrically heated or cooled rollers 39 and the rollers 37 and 38 in the area of the transfer station U2 are designed so that they can be pivoted onto and off the transfer element 16.
  • the transfer element 16 is passed freely through the cleaning station RS and the rollers 39.
  • a further guide roller can be coupled to the guide roller 35/2 Swiveling the deflection roller 35/2 is pivoted as a counter bearing for the deflection roller 35/1.
  • This counter element can also be designed as a sliding surface that can be swiveled in and out.
  • the transfer belt 16 moves in the transfer area T in the direction of movement of the intermediate carrier 10
  • the transfer belt 16 is moved in the transfer printing area UB1, UB2, UX in the direction of movement of the recording medium.
  • the transfer belt 16 is guided over the deflection rollers 35 in the manner of a twisted transmission belt. Additional guide rollers, not shown here, ensure that the transfer element between the deflecting rollers is spaced or does not touch during the twisted wrap.
  • the support structure consists of an assembly frame 40 made of extruded profiles, which is arranged on one side with respect to a longitudinal extent of the device determined by the process direction (arrow).
  • the assembly frame 40 defines an assembly area MS for receiving and storing the units or stations (developer stations etc.) and the guide elements for the intermediate carrier or the recording medium on one side.
  • the guide rollers 35 for the transfer elements 16 are shown by way of example in FIG. These are supported on one side by means of bearing elements 41 in the assembly frame 40. The same applies to the photoconductor belt (intermediate carrier 10).
  • FIGS. 8 to 13 A configuration of the transfer elements in accordance with FIGS. 1 and 4 is assumed, ie with a reversal of movement of the transfer element 16 of the transfer station U2.
  • reference numerals B1 to B55 denote a sequence of toner images produced one after the other on the intermediate carrier 10. These toner images are applied with the help of the developer station EY, EM, EC and EB.
  • the letter Y in the reference symbol for the toner images denotes the color yellow, the letter M the color magenta (blue), the letter C the color cyan (red) and the letter B the color black. If a reference number is used without the addition of letters, no toner image is applied to the intermediate carrier 10 in this area.
  • the areas B1 to B55 correspond to 55 cycles for the generation of four-color toner images for 10 sheets A4 in the so-called "2-up system", that is to say the writing of two x five single sheets passed through the transfer areas in parallel in duplex operation with four colors. During the 55 cycles, toner images are generated on the transfer belts 6 and then transferred to the recording media.
  • the 55 bars define a cycle. This cycle is divided into sub-cycles corresponding to FIGS. 8 to 12, with FIG. 13 corresponding to FIG. 8 defining the start of a new cycle.
  • the reference numerals I to V define areas on the transfer elements 16 on which the four-color toner images are generated, specifically by overlaying colored single-toner images several times. After all the toner images have been created on the transfer elements 16, the transfer printing is carried out on two x five recording media guided in parallel through the transfer printing areas UB1 and UB2.
  • each partial cycle four individual toner images are applied to the upper transfer belt and to the lower transfer belt. And that alternates between the upper transfer belt and the lower transfer belt.
  • the length of the transfer element is therefore designed in accordance with the format size and the number of sheets to be printed in one cycle.
  • the transfer belt has at least the length of five A4 sheets corresponding to the areas I to V.
  • Each partial cycle, FIG. 8 to FIG. 13, has a duration of 1.8 s.
  • the overprinting of the superimposed toner images on the transfer belts 16 takes place on the recording media.
  • the transfer areas T are opened and the upper transfer element of the transfer station U2 is moved in the opposite direction to the transfer mode.
  • the single sheets are fed in parallel via the transport channel K or the pressure channel KD, the transfer printing area UB1 or UB2, each with two sheets.
  • the invention has been described with reference to a printing device. However, it can also be used with copiers. For this it is e.g. B. necessary to supply the image-generating device (character generator 26) with the scanning signals of a document scanner or to project the document in a known manner onto the intermediate carrier.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Claims (14)

  1. Appareil d'impression ou de reprographie pour l'impression alternée de feuilles individuelles et de papier sans fin, comportant
    - un support intermédiaire (10) auquel est associé un poste d'enregistrement et de développement (ZG, EY,EM,EC,EB) servant à produire des images de toner sur le support intermédiaire (10);
    - des premier et second postes de transfert (U1,U2) comportant chacun un élément de transfert (16) servant à transférer une image de toner du support intermédiaire (10) dans une zone de transfert (T) et à transférer l'image de toner de l'élément de transfert (16) au support d'enregistrement (22) dans une zone de transfert (UB), les zones de transfert (T) des postes de report (U1,U2) étant disposées à distance l'une de l'autre le long du support intermédiaire (10),
    - un canal de transport (K) pour le transport du support d'enregistrement (22) depuis une zone de réserve (VB) à une zone de transfert (UB) des postes de transfert (U1,U2) et par une zone de fixage (FX,UX),
    a) le canal de transport (K) comportant un canal d'impression (KD) et un canal d'amenée (KZ) qui s'étend perpendiculairement au précédent dans le plan du support d'enregistrement et débouche dans une zone d'embouchure dans le canal d'impression (KD),
    b) la zone de transfert (UB1) du premier poste de transfert (U1) pour l'impression d'un recto du support d'enregistrement (22) étant disposée d'un côté du canal d'impression (KD), tandis que la zone de transfert (UB2) du second poste de transfert (UD) pour l'impression d'un verso du transfert d'enregistrement (22), est disposée sur l'autre côté du canal d'impression (KD),
    c) la zone d'embouchure est disposée dans une zone de l'appareil, qui est limitée par des postes de transfert (U1,U2) et le support intermédiaire (10),
    d) le canal d'amenée (KZ) s'étend depuis la zone de réserve (GB), qui peut être disposée latéralement sur l'appareil, en direction de la zone d'embouchure,
    e) dans la zone d'embouchure du canal d'amenée et du canal d'impression est prévu un dispositif de changement de direction pour le support d'enregistrement (22).
  2. Appareil d'impression ou de reprographie suivant la revendication 1, comportant
    - un canal d'impression (KD), qui est conçu pour le transport parallèle d'au moins deux feuilles individuelles (22/1, 22/2), disposées côte-à-côte, d'un premier format et pour le transport de feuilles individuelles d'un second format, les feuilles individuelles (22/1, 22/2) étant envoyées les unes à la suite des autres au dispositif de changement de direction, par l'intermédiaire du canal d'amenée (KZ).
  3. Appareil d'impression ou de reprographie suivant la revendication 2, comportant
    - une butée fixe associée au dispositif de changement de direction et limitant latéralement le canal d'impression (KD), et une butée (24), qui est disposée approximativement au centre du canal d'impression (KD) et peut être introduite par basculement dans la zone d'embouchure et en être écartée par basculement.
  4. Appareil d'impression ou de reprographie suivant l'une des revendications 1 à 3, comportant une barre de renvoi (27), associée au dispositif de changement de direction et au moyen de laquelle le papier sans fin est dévié et est envoyé aux zones de transfert (UB1,UB2).
  5. Appareil d'impression ou de reprographie suivant l'une des revendications 1 à 4, comportant
    - des moyens (15) pour produire alternativement une position de transfert, dans laquelle des images de toner sont transférées du support intermédiaire (10) à l'élément de transfert (16) et une position d'état prêt, dans laquelle le support intermédiaire (10) et l'élément de transfert (16) sont distants l'un de l'autre de telle sorte qu'il ne se produit aucune transmission d'image de toner.
  6. Appareil d'impression ou de reprographie suivant la revendication 5, comportant
    - un élément de transfert (16) qui est associé au second poste de transfert (U2) et peut être entraîné avec possibilité d'inversion de son sens de déplacement, auquel cas dans la zone de transfert (T), l'élément de transfert est déplacé dans la position de transfert dans le même sens que le support intermédiaire (10) et dans une position de transfert associée à la position d'état prêt, et déplacé dans le sens de déplacement du support d'enregistrement (22) .
  7. Appareil d'impression ou de reprographie suivant l'une des revendications 1 à 6, comportant
    - des éléments de transfert, qui sont agencés sous la forme de bandes de transfert (16).
  8. Appareil d'impression ou de reprographie suivant la revendication 7, dans lequel les deux bandes de transfert (16) sont guidées en boucle entre la zone de transfert (UB1, UB2) et la zone de transfert (T), de sorte que, lors du déplacement des bandes de transfert (16) dans la zone de transfert (T) dans le sens de déplacement du support intermédiaire (10), les bandes de transfert sont déplacées, dans la zone de transfert (UB), dans le sens de déplacement du support d'enregistrement (22).
  9. Appareil d'impression ou de reprographie suivant l'une des revendications 1 à 8, comportant
    - un poste de transfert, dans lequel est disposée une bande de transfert adhésive (16) et qui comporte une zone de transfert, agencée sous la forme d'un poste de fixage par contact (UX), pour réaliser simultanément le transfert et le fixage des images de toner sur le support d'enregistrement.
  10. Appareil d'impression ou de reprographie suivant l'une des revendications 1 à 9, comportant
    - plusieurs postes de développement (EY,EM,EC,EB) disposés le long du support intermédiaire (10) pour produire des images de toner colorées.
  11. Appareil d'impression ou de reprographie suivant l'une des revendications 1 à 10, comportant
    - une structure de support (40) pour des postes de traitement (EY,EM,16,U1,U2,FX) et le canal de transport (K), dans lequel, d'une manière rapportée à une étendue longitudinale de l'appareil déterminée par la direction de déroulement du processus, les postes de traitement et le canal de transport (K) ainsi que les modules d'entraînement (M1...M4) qui leur sont associés, sont fixés unilatéralement dans une zone de montage (MS) de telle sorte qu'un remplacement des moyens de consommation des postes de traitement (EY,EM,U1,U2,FX) et une intervention dans le canal de transport (K) sont possibles à partir d'un côté de commande (BS) de l'appareil, qui est située à l'opposé de la zone de montage.
  12. Appareil d'impression ou de reprographie suivant la revendication 11, comportant
    - des moteurs électriques (M1...M4), disposés au niveau du fond de l'appareil dans la zone de montage (MS), pour le poste de traitement et le canal de transport (K).
  13. Appareil d'impression ou de reprographie suivant l'une des revendications 1 à 12, comportant
    - un poste de fixage (FX), réalisé sous la forme d'un poste de thermofixage sous pression et qui comporte des cylindres de fixage chauffés (28), une zone d'amenée (22), qui est disposée en amont des cylindres de fixage dans la direction de déplacement du support d'enregistrement (22), le support d'enregistrement (22) étant guidé sans contact, dans la zone d'amenée, par un coussin d'air produit dans la zone d'amenée (29).
  14. Appareil d'impression ou de reprographie suivant l'une des revendications 1 à 13,
    - dans lequel le canal de transport s'étend avec une forme rectiligne à partir de la zone d'embouchure, à travers les zones de transfert des postes de transfert (U1,U2) et à travers le poste de fixage (FX).
EP19900118889 1990-10-02 1990-10-02 Imprimante ou copieur pour l'impression simple face et double face en une ou plusieurs couleurs Expired - Lifetime EP0478820B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59010037T DE59010037D1 (de) 1990-10-02 1990-10-02 Druck- oder Kopiergerät für ein- oder mehrfarbigen Simplex- und Duplexdruck
EP19900118889 EP0478820B1 (fr) 1990-10-02 1990-10-02 Imprimante ou copieur pour l'impression simple face et double face en une ou plusieurs couleurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19900118889 EP0478820B1 (fr) 1990-10-02 1990-10-02 Imprimante ou copieur pour l'impression simple face et double face en une ou plusieurs couleurs

Publications (2)

Publication Number Publication Date
EP0478820A1 EP0478820A1 (fr) 1992-04-08
EP0478820B1 true EP0478820B1 (fr) 1996-01-03

Family

ID=8204568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900118889 Expired - Lifetime EP0478820B1 (fr) 1990-10-02 1990-10-02 Imprimante ou copieur pour l'impression simple face et double face en une ou plusieurs couleurs

Country Status (2)

Country Link
EP (1) EP0478820B1 (fr)
DE (1) DE59010037D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129277A1 (de) * 1991-09-03 1993-03-04 Siemens Nixdorf Inf Syst Elektrofotografisches simultan-doppeldrucksystem
JPH07505489A (ja) * 1992-04-10 1995-06-15 オーセ　プリンテイング　システムズ　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング 記録担体の両面に同時に印刷するための電子写真式の印刷装置
US5314774A (en) * 1992-05-22 1994-05-24 Hewlett-Packard Company Method and apparatus for developing color images using dry toners and an intermediate transfer member
WO1994027193A1 (fr) * 1993-05-19 1994-11-24 Siemens Nixdorf Informationssysteme Aktiengesellschaft Dispositif d'impression electrographique de supports d'enregistrement sous forme de bandes de differentes largeurs
KR0183921B1 (ko) * 1996-08-30 1999-05-15 삼성전자주식회사 전자사진방식 프린터
EP0965070B1 (fr) * 1997-03-03 2000-10-11 Océ Printing Systems GmbH Dispositif d'impression et de copie pour realiser une impression monochrome ou en couleurs, adaptee a des performances, sur un ou deux cotes d'un support

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589104A1 (fr) * 1985-10-28 1987-04-30 Telephonie Ind Commerciale Imprimante electrostatique indirecte recto-verso
JPH02502132A (ja) * 1987-11-10 1990-07-12 イーストマン・コダック・カンパニー 多色二重複写を行う静電写真法と装置
GB2226792B (en) * 1988-12-05 1992-06-24 Ricoh Kk Side-free recording apparatus
DE69016234T2 (de) * 1989-03-20 1995-06-14 Canon Kk Blatt-Transportgerät.

Also Published As

Publication number Publication date
DE59010037D1 (de) 1996-02-15
EP0478820A1 (fr) 1992-04-08

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