EP0977095B1 - Drucker mit zwei Druckwerken - Google Patents

Drucker mit zwei Druckwerken Download PDF

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Publication number
EP0977095B1
EP0977095B1 EP99113945A EP99113945A EP0977095B1 EP 0977095 B1 EP0977095 B1 EP 0977095B1 EP 99113945 A EP99113945 A EP 99113945A EP 99113945 A EP99113945 A EP 99113945A EP 0977095 B1 EP0977095 B1 EP 0977095B1
Authority
EP
European Patent Office
Prior art keywords
printing
printing unit
channel
shunt
sheet
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
EP99113945A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0977095A3 (de
EP0977095A2 (de
Inventor
Georg BÖHMER
Joseph Dietl
Hans Hahn
Bernward Heller
Hubert Mugrauer
Otto Olbrich
Reinhold Rigauer
Otto Rotheimer
Rudolf Seeberger
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
Oce Printing Systems GmbH and Co KG
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 Oce Printing Systems GmbH and Co KG filed Critical Oce Printing Systems GmbH and Co KG
Publication of EP0977095A2 publication Critical patent/EP0977095A2/de
Publication of EP0977095A3 publication Critical patent/EP0977095A3/de
Application granted granted Critical
Publication of EP0977095B1 publication Critical patent/EP0977095B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00016—Special arrangement of entire apparatus
    • G03G2215/00021—Plural substantially independent image forming units in cooperation, e.g. for duplex, colour or high-speed simplex
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
    • G03G2215/0103—Plural electrographic recording members

Definitions

  • the invention relates to a printing or copying system, comprising a transport system for sheet-shaped recording medium.
  • Such electrophotographic printer are for example from the DE 34 16 252 A1 , of the EP 0 104 022 A2 , of the DE-PS 1,280,605 , of the DE 34 07 847 A1 or the WO 91/13386 known.
  • a high printing performance can also be achieved in duplex mode, as long as both printing units are working properly.
  • a disadvantage of the devices described in the cited publications, however, is that in the event of failure of one of the printing units, they require a drastic reduction in the performance of the duplex operation. A sheet that is to be printed in duplex mode on both sides must then be accelerated several times in the opposite direction to be printed on both sides of the one remaining printing unit can.
  • a printing device which contains two printing units.
  • One of the printing units has a priority status. Sheets that have been printed in the subordinate printing unit can be additionally printed in the priority printing unit. If, however, the priority printing unit fails, then no double printing and in particular no duplex printing is possible.
  • a printing device which contains a plurality of printing units.
  • the printing units are connected to each other via a ring system, wherein a common turning device is used with a switch for all printing units.
  • the printing device can operate in various modes such as simplex printing and duplex printing.
  • document US-A-4,591,884 also describes a printing system that works with two printing units.
  • Various modes of transport, including simplex printing and duplex printing, are possible with the help of various transport routes.
  • a first printing unit and a substantially similar second printing unit is provided, to which sheet-shaped material can be supplied via a common input section.
  • the sheet-shaped material printed by the second printing unit is output via a common output section.
  • the two transfer printing transport paths of the two printing units are each connected via connection paths to two ring systems. At each of the two rings, a switch is provided, by the sheet-like material is independent of the respective other switch in the associated ring reversible.
  • two printing units are used.
  • the components for these printing units such as the electronic drive, the developer units, the toner supply and discharge devices, etc., can be maintained almost unchanged.
  • Each printing unit on its own therefore has a very high operational reliability.
  • Both printing works use a common one Input section, through which the sheet material is supplied.
  • both printing couples share an output section for discharging the printed sheet material.
  • the new device is very compact and can be produced with little effort. Due to the two printing units, the printing performance is significantly increased.
  • Ringsysstem a printed from one of the two printing units, sheet-like material the same printing unit again in the same direction can be fed as in the first printing.
  • the two rings are connected via two three-way points. This creates a variety of transport routes.
  • FIG. 1 there is shown a high performance printer 10 which is used to quickly print sheets of paper.
  • the high-performance printer 10 includes a first, lower printing unit D1 and a second, upper printing unit D2. Both printing units D1, D2 work according to the known electrographic process with the same transfer printing speed.
  • the printing units D1, D2 are followed by fixing, which schematically in the FIG. 1 are indicated by two pairs of rollers 12, 14.
  • a paper input 16 is connected, which contains a plurality of storage containers 18 to 24 with individual sheets and an external paper input channel 26, can be supplied from the outside of single sheets. About a transport channel sheets are fed to an input section 28.
  • a paper output 30 is connected to the high-performance printer 10, which contains a plurality of output containers 32 to 36. Furthermore, two output channels 38, 40 are provided, via which individual sheets can be output to further processing stations.
  • the high-performance printer 10 delivers the printed single sheets over the discharge section 42.
  • the printing units D1, D2 each Umtik-transport paths 44, 46 are assigned, which are each set by drives so that the supplied single sheets on the printing units D1, D2 have their transfer printing speed. Both Transfer printing transport paths 44, 46 are connected to one another via a connecting channel 48.
  • the transport path around the first printing unit D1 is supplemented to form a ring R1 by a feed channel 50, via which individual sheets can also be fed from the input section 28 to the second transfer printing path 46.
  • the transport path for the second printing unit D2 is supplemented in a similar manner to form a ring R2 by a discharge channel 52, via which individual sheets printed by the printing unit D1 can be fed to the delivery section 42.
  • a first switch W1 is arranged, which allows individual sheets from the input section 28 optionally to the first transfer transport path 44 or the feed channel 50 are supplied.
  • a further variant consists in that individual sheets transported on the feed channel 50 in the direction of the switch W1 can be fed to the first transfer printing transport path 44.
  • a second shunt W2 and a third shunt W3 are arranged at the ends of the connecting channel 48 and connect the adjacent transport paths 44, 48, 52 and 46, 48, 50, respectively.
  • a fourth shunt W4 is located in the vicinity of the dispensing section 42 and connects the adjacent transport routes.
  • the paper dispenser 30 includes a fifth shunt W5, which operates as a turning device. Furthermore, it should be noted on a Aus Kunststoff Anlagen 54, which are supplied via a switch W6 Committee single sheets.
  • FIG. 1 By the in FIG. 1 described arrangement, various modes of the high-performance printer 10 can be realized.
  • FIGS. 2 to 7 The different operating modes are shown schematically. The promotion of individual sheets is illustrated by arrows.
  • FIG. 2 is schematically shown the simplex printing with only one printing unit.
  • this simplex printing only one side of a single sheet is printed.
  • the single sheet passes via the input section 28 and the correspondingly connected switch W1 along the arrow P1 to the first transfer printing path 44 and is printed on the printing unit D1. Subsequently, the cut sheet is discharged along the discharge passage 52 (arrow P2) via the discharge section 42 into the paper exit 30 (arrow P3).
  • FIG. 3 shows the simplex printing with the upper, second printing unit D2.
  • the transport of the single sheet is via the feed channel 50 (arrow P4), the second transfer printing path (arrow P5) to the paper output 30 (arrow P6).
  • FIG. 4 schematically shows the transport of the individual sheets.
  • the switch W1 alternately feeds the feed channel 50 and the first transfer printing path 44 (arrows P7, P8).
  • the individual sheets are braked on their transport up to the printing units D1, D2 on transfer printing speed, printed there on the front and then further promoted to the switch W4.
  • the individual sheets are accelerated to at least twice the transfer printing speed, so that they are output at the common output section via the switch W4 with distance from each other and in the paper output 30 successively with at least twice the transfer printing speed according to the arrow P11 niethertranspcrtiert can.
  • the individual sheets in the paper input 16 the individual sheets reach the input section 28 with at least twice the transfer printing speed of the printing units D1, D2 be supplied. Also in the paper output 30, the single sheets are also further promoted and stored at least twice the speed. As a result of these measures, the individual sheets arrive at the common input section 28 and at the common output section 42 without a collision of individual sheets and consequently a paper jam occurring.
  • the transport paths for the individual sheets fed to the first printing unit D1 and the single sheets fed to the second printing unit D2 are designed symmetrically or at least the same length, so that the single sheets with the same speed profile can be decelerated and accelerated on both transport paths. This makes it possible to build the same necessary for transport drives and devices. Furthermore, it is possible to use similar controls.
  • FIG. 5 schematically shows the duplex printing operation in which the single sheets are printed on both sides.
  • the individual sheets fed to the input section 28 are supplied to the first transfer printing path 44 by the first switch W1 (arrow P13).
  • the respective single sheet is conveyed a turning distance according to the arrow P14 on the switch W2. This turning distance is part of the Abmarinals 52.
  • the conveying direction is reversed according to arrow P15, and the switch W2 then directs the cut sheet according to the arrow P16 in the connecting channel 48.
  • the single sheet is then from the switch W3 in the direction of arrow P17 to the second Transfer printing 46 deflected.
  • the printing unit D2 so the not yet printed back of the single sheet is fed for printing.
  • the single sheets are fed according to the arrow P18 of the switch W4 and transported in the paper output 30 along the arrow P19. Since the single sheet is transported in this state with its rear side up, it is still to turn before storing in the compartments 32 to 36.
  • the switch W5 is used for this purpose.
  • the single sheet is first through the switch W5 in the direction of arrow P20 for a predetermined Turning course led.
  • the transport direction is reversed according to the arrow P21 and the switch W5 conveys the single sheet in the direction of the arrow P22, whereupon it is stored in the storage compartments 32 to 36 page correct.
  • the switch W2 works as a turning device to supply the printing unit D2, the back of the cut sheet.
  • the turnout can also be used the switch W3.
  • the individual sheet leaving the printing unit D1 is then guided via the shunt W2, the connecting channel 48 of the shunt W3 and then for a short turning distance along the feed channel 50 in the direction of the shunt W1. Subsequently, the transport direction is reversed and the switch W3 directs the single sheet in the direction of the printing unit D2 with its back upwards.
  • FIG. 6 schematically shows another mode, the two-color simplex printing, in which the front of a single sheet is printed with two image patterns of different colors.
  • the two printing units D1, D2 print picture patterns of different colors.
  • the single sheet is fed to the printing unit D1 via the shunt W1 (arrow P25). Subsequently, the single sheet via the shunt W2 the connecting channel 48 without turning and then via the switch W3 the printing unit D2 supplied (arrows P26, P27).
  • the printing unit D2 imprints the front side with a color different from the color of the printing unit D1. Subsequently, the single sheet is issued via the switch W4 to the paper output 30 (arrow P28).
  • FIG. 7 shows schematically the transport path of a single sheet in the operating mode two-color duplex printing, in which the front and the back of a single sheet are printed with image patterns of different colors.
  • the prerequisite for this is that the printing units D1 and D2 print different-colored print images.
  • the arrows P25, P26, P27 and P28 illustrate the transport route.
  • the single sheet is fed again to the printing unit D1.
  • the arrows P29 to P36 illustrate the transport path of the single sheet for printing the back. In order for this rear side to be fed to the printing unit D1, the single sheet must be turned on the transport path between the printing unit D2 and the printing unit D1.
  • This turning can be done eg at the shunt W4, the shunt W2 or the shunt W3.
  • turning takes place with the aid of the shunt W4, ie the single sheet is first transported for a short turning distance in the direction of the shunt W5, then the transport direction is reversed and the single sheet is conveyed further in the direction of the shunt W2.
  • a further turning takes place through the switch W5 and then the correct side position of the double-sided printed with two color images single sheet.
  • Alternative transport of the cut sheet by the high-performance printer 10 for realizing the two-color duplex printing mode can be performed in the following manner.
  • the single sheet is fed from the input section 28 via the switch W1 the printing unit D1, printed on its front side and then passed over the switches W2 and W3 for turning briefly in the direction of the switch W1.
  • the transport direction is changed in the direction of printing unit D2 and conveyed the single sheet on the transfer printing path 46.
  • the turnout W3 thus serves as a turning station.
  • the sheet is re-supplied via the switches W4, W2, W3 and W1 the first printing unit D1, to now print the back.
  • the single sheet must be turned to this.
  • FIG. 8 shows the arrangement of two high-performance printer 10 and 10 'to a printing system 55.
  • the two high-performance printers 10 and 10' are of similar construction, the individual components must therefore not be explained again.
  • a transfer device 56 Arranged between the output channel 38 of the first high-performance printer 10 and the external paper input channel 26 of the second high-performance printer 10 'is a transfer device 56 which conveys single sheets from the high-performance printer 10 to the high-performance printer 10'.
  • Each high performance printer 10, 10 ' can implement the previously described simplex, alternate simplex, two color simplex, one color duplex, and two color duplex modes. By combining the various modes of operation in which a first mode is set in high performance printer 10 and a matching or other mode in high performance printer 10 ', new variants of modes may be realized.
  • both high-performance printers can operate in two-color simplex mode, the first printer printing the front side with two differently colored image patterns and the high-performance printer 10 'printing the back side with two differently colored image patterns. If in each case different colors are selected for a total of four different printing units, four-color duplexing can be realized by the printing system 55, ie in each case the front side and the back side can be printed with four differently colored image patterns.
  • the printing system 55 can be further extended by connecting at least one further high-performance printer in the manner of the high-performance printer 10 to the high-performance printer 10 '.
  • n-color duplex printing can be achieved by printing on the front and back of a single sheet a n image pattern with n different colors, where n is any integer.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Printers Characterized By Their Purpose (AREA)
  • Counters In Electrophotography And Two-Sided Copying (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Color Electrophotography (AREA)
  • Handling Of Cut Paper (AREA)
EP99113945A 1996-10-22 1997-10-22 Drucker mit zwei Druckwerken Expired - Lifetime EP0977095B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19643654 1996-10-22
DE19643654 1996-10-22
EP97945775A EP0934554B1 (de) 1996-10-22 1997-10-22 Drucker mit zwei druckwerken

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97945775A Division EP0934554B1 (de) 1996-10-22 1997-10-22 Drucker mit zwei druckwerken

Publications (3)

Publication Number Publication Date
EP0977095A2 EP0977095A2 (de) 2000-02-02
EP0977095A3 EP0977095A3 (de) 2000-10-04
EP0977095B1 true EP0977095B1 (de) 2008-03-19

Family

ID=7809506

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99113945A Expired - Lifetime EP0977095B1 (de) 1996-10-22 1997-10-22 Drucker mit zwei Druckwerken
EP97945775A Expired - Lifetime EP0934554B1 (de) 1996-10-22 1997-10-22 Drucker mit zwei druckwerken

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP97945775A Expired - Lifetime EP0934554B1 (de) 1996-10-22 1997-10-22 Drucker mit zwei druckwerken

Country Status (6)

Country Link
US (2) US6212357B1 (enExample)
EP (2) EP0977095B1 (enExample)
JP (1) JP4146901B2 (enExample)
CA (1) CA2269596C (enExample)
DE (3) DE59712929D1 (enExample)
WO (1) WO1998018052A1 (enExample)

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WO1999009458A1 (de) * 1997-08-13 1999-02-25 OCé PRINTING SYSTEMS GMBH Druck- oder kopiergerätesystem zum performanceangepassten erstellen einer vorgegebenen blattfolge von monochrom und/oder farbig bedruckten einzelblättern
DE10023828A1 (de) * 2000-05-15 2002-01-03 Nexpress Solutions Llc Vorrichtung zum Transport von Bedruckstoff durch eine Druckeinheit
JP4345479B2 (ja) * 2001-08-09 2009-10-14 富士ゼロックス株式会社 印刷装置
US6782236B2 (en) * 2001-10-02 2004-08-24 Canon Kabushiki Kaisha Duplex image forming apparatus
DE10212840A1 (de) 2002-03-22 2003-10-09 Oce Printing Systems Gmbh Verfahren und Einrichtung zum Bedrucken von Einzelblättern mit einer Wendevorrichtung
US6778787B2 (en) * 2002-04-05 2004-08-17 Canon Kabushiki Kaisha Image forming apparatus with control to divert sheet to usable path
US20040114155A1 (en) * 2002-06-25 2004-06-17 Masahiro Kurahashi Image forming apparatus, image forming system, recovery processing method, program, and storage medium
DE10233891B4 (de) 2002-07-25 2006-01-12 OCé PRINTING SYSTEMS GMBH Drucker oder Kopierer mit einer Steuereinrichtung und Verfahren zum Überwachen von Verschleißteilen
DE10237300B4 (de) 2002-08-14 2005-09-15 OCé PRINTING SYSTEMS GMBH Verfahren zur automatischen Behebung eines beim Betrieb einer elektrografischen Druck- oder Kopiereinrichtung auftretenden Fehlers
DE10247367A1 (de) 2002-10-10 2004-04-22 OCé PRINTING SYSTEMS GMBH Einrichtung und Verfahren zum Umdrucken und Fixieren mit einem geführten und einem freien Transportabschnitt
DE10250194A1 (de) * 2002-10-28 2004-05-13 OCé PRINTING SYSTEMS GMBH Verfahren und Vorrichtung zum Steuern eines elektrografischen Druckers oder Kopierers
US6814004B2 (en) 2003-03-05 2004-11-09 Xerox Corporation Face-to-face printing within booklet
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US7324779B2 (en) * 2004-09-28 2008-01-29 Xerox Corporation Printing system with primary and secondary fusing devices
US7336920B2 (en) * 2004-09-28 2008-02-26 Xerox Corporation Printing system
US7310108B2 (en) * 2004-11-30 2007-12-18 Xerox Corporation Printing system
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JP4661546B2 (ja) * 2005-11-22 2011-03-30 富士ゼロックス株式会社 印刷装置
US7963386B2 (en) * 2005-12-02 2011-06-21 Ferag Ag Method and device for the selective processing of printed products
US8195083B2 (en) * 2007-12-27 2012-06-05 Lexmark International, Inc. Duplex architecture for an imaging apparatus
US20090220289A1 (en) * 2008-02-28 2009-09-03 Perfect Systems, Llc High speed duplex printer
JP5585705B1 (ja) * 2013-08-30 2014-09-10 富士ゼロックス株式会社 搬送システム
JP6167819B2 (ja) * 2013-10-02 2017-07-26 富士ゼロックス株式会社 画像形成装置
JP6255998B2 (ja) * 2013-12-27 2018-01-10 ブラザー工業株式会社 記録装置、及びそのプログラム
JP6260586B2 (ja) 2015-06-25 2018-01-17 コニカミノルタ株式会社 画像形成システム

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EP1008017B1 (de) * 1996-10-22 2002-05-02 Océ Printing Systems GmbH Verfahren zum betreiben eines druckers mit zwei druckwerken

Also Published As

Publication number Publication date
EP0934554A1 (de) 1999-08-11
CA2269596C (en) 2006-04-11
DE59704090D1 (de) 2001-08-23
EP0934554B1 (de) 2001-07-18
CA2269596A1 (en) 1998-04-30
DE19781180D2 (de) 1999-08-05
DE59712929D1 (de) 2008-04-30
US6212357B1 (en) 2001-04-03
EP0977095A3 (de) 2000-10-04
EP0977095A2 (de) 2000-02-02
JP2001502813A (ja) 2001-02-27
JP4146901B2 (ja) 2008-09-10
WO1998018052A1 (de) 1998-04-30
US6317581B1 (en) 2001-11-13

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