EP0789860A1 - Multifunktionale elektrografische druckeinrichtung - Google Patents
Multifunktionale elektrografische druckeinrichtungInfo
- Publication number
- EP0789860A1 EP0789860A1 EP95917281A EP95917281A EP0789860A1 EP 0789860 A1 EP0789860 A1 EP 0789860A1 EP 95917281 A EP95917281 A EP 95917281A EP 95917281 A EP95917281 A EP 95917281A EP 0789860 A1 EP0789860 A1 EP 0789860A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- station
- printing
- transfer
- toner images
- recording medium
- 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.)
- Granted
Links
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
- 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
- G03G15/237—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 the image receiving member being in form of a continuous web
-
- 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
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
- G03G2215/00417—Post-fixing device
- G03G2215/0043—Refeeding path
- G03G2215/00438—Inverter of refeeding path
-
- 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
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00443—Copy medium
- G03G2215/00451—Paper
- G03G2215/00455—Continuous web, i.e. roll
- G03G2215/00459—Fan fold, e.g. CFF, normally perforated
Definitions
- the invention relates to a multifunctional electrographic printing device for printing on one or both sides of tape-shaped recording media in the start-stop mode.
- EP-Bl-01 54 695 In order to produce multicolor and reverse side printing with electrographic printing devices working on continuous paper, it is known from EP-Bl-01 54 695 to operate two continuous paper printers one after the other, the paper printed in the first printer being turned over and subsequently in the second printer on the second side is printed. The effort is considerable due to the second printer required.
- the known device has no switchable deflection device and when the operating mode is changed, an adjustment of the fixing station is necessary.
- two transfer printing stations are arranged on the circumference of the photoconductor drum, the first transfer printing station being used for printing on the front and the second for printing on the back.
- a mechanical buffer for the recording medium and a turning station are located between the transfer stations.
- the front is first printed with the first transfer printing station, the second transfer printing station being pivoted away and the paper not moving there. The paper runs from the first
- Transfer station in the mechanical buffer is then turned in a turning station. After transfer printing of the front side, the paper transport to the first transfer printing station is stopped, the latter is pivoted away and then the back is printed on with the aid of the second transfer printing station. The paper runs out of the buffer. The loose toner images are then fixed in a heat setting station. This alternating front and back printing with sheet-by-sheet start-stop of the paper web roughly corresponds to the printing rhythm of a single sheet machine with duplex operation.
- an intermediate fixation with the aid of a flash fixing device can be advantageous before the turning station.
- the print time is available for both sides for the final fixation in the heat-setting station, which means that it can be fixed without interruption and at half the speed. This enables a high fixation quality.
- the start-stop operation can be omitted and the paper is e.g. with the second transfer station swung away, printed continuously with the first transfer station, or a transfer is carried out only via the second transfer station with direct supply via a separate simplex channel.
- a first monochrome toner image is first generated via the first transfer printing station and then a second one superimposed with the second transfer printing station.
- FIG. 1 shows a schematic illustration of an electrographic printing device for printing on tape-shaped recording media in duplex mode
- FIG. 2 shows a schematic sectional illustration of the same electrographic printing device in simplex mode
- FIG. 3 shows a schematic illustration of an electrographic printing device in two-color simplex operation
- Figure 4 is a schematic representation of an electrographic printing device in duplex mode with increased printing speed
- Figure 5 is a schematic representation of an electrographic printing device in simplex mode with increased Druckge ⁇ speed.
- An electrographic printing device for printing on tape-shaped recording media 10 of different bandwidth contains an electromotive photoconductor drum as intermediate media 11.
- an electromotive photoconductor drum instead of the photoconductor drum, however, it is also possible to use a band-shaped intermediate carrier, for example an OPC band, or a magneto-styli arrangement, as described, for example, in EP-Bl-0 191 521.
- the various units for the electrophotographic process are grouped around the intermediate carrier 11.
- the printing device contains a fixing station 18 which is arranged downstream of the second transfer printing station 15/2 in the transport direction of the recording medium and which is designed as a thermal printing fixing station, with a heated fixing roller 19 with associated pressure roller 20, and guide rollers 21 arranged downstream of the fixing station. which serve, inter alia, as output elements for a stacking device 22 for the recording medium 10.
- a fixing station 18 which is arranged downstream of the second transfer printing station 15/2 in the transport direction of the recording medium and which is designed as a thermal printing fixing station, with a heated fixing roller 19 with associated pressure roller 20, and guide rollers 21 arranged downstream of the fixing station.
- fusing station there are also other fusing stations, e.g. possible with a heated or unheated inlet saddle or a cold fixing station.
- the tape-shaped recording medium 10 is made up, for example, as prefolded continuous paper provided with edge perforations and is fed from a storage area 23 via feed rollers 24 to the first transfer station 15/1. However, it is also possible to feed a recording medium without edge perforations via a roll feed.
- the transport of the recording medium is preferably carried out via a transport device 25 assigned to the transfer printing stations 15/1, 15/2 in the form of transport belts 26 provided with pins which, guided by drive shafts 27, engage in the perforations on the edges of the recording medium 10.
- a transport-hole-free recording medium an adapted transport device familiar to the person skilled in the art is to be provided, which transports the recording medium, for example by friction, controlled by a control arrangement scanning synchronization marks.
- duplex recording medium transport channel in the housing area of the printing device between the first 15/1 and the second 15/2 transfer printing station.
- a turning device 28 which serves to turn the recording medium through 180 ° after printing on the front side.
- the turning device 28 can contain two turning bars arranged at an angle of 90 ° to one another, over which the recording medium is guided.
- Such a turning device is in principle from the Xerox Disclosure Journal. Vol. 9, No. 3, May 1984, Stamford, Conn US pages 201-203 "Method for Duplex Printing on Contiou ⁇ Web Paper" known.
- a mechanical buffer store 29 in the form of a loop puller with a displaceable deflection roller 30, and an intermediate fixing station 31, which in the embodiment shown consists of a thermal pressure fixing station similar to the fixing station 18 on the output side.
- an intermediate fixing station 31 which in the embodiment shown consists of a thermal pressure fixing station similar to the fixing station 18 on the output side.
- the heating flash of the fixing device is preferably absorbed by the toner and reflected by the areas that are not stressed, which stresses the paper less than thermal printing fixing.
- the information for the front side is first read into the page memory SP in a memory area for the front side VS and the information for the back side in a memory area RS for the back side.
- the character-dependent generation of a corresponding sequence of toner images then takes place via the electrophotographic units, a first sequence of toner images being generated on the photoconductor drum 11, that of the front side
- the recording medium 10 is pulled out of the mechanical buffer memory 29 and the front-side toner image located thereon is temporarily fixed in the intermediate fixing station 31 by flash fixing. Thereafter, the recording medium 10 is turned in the turning station 28 and, in the turned state, guided to the transfer printing of the rear side via the transfer printing station 15/2. After the front and back have been completely printed with the appropriate number of front and back toner images, the toner images are fixed in the output-side fixing station 18 and the paper is deposited via the stacking device 22.
- a further mechanical buffer store 29/3 can be arranged in front of the fixing station.
- This buffer memory 29/2 can receive the buffer from the first buffer memory 29 in an inverted form and temporarily store it, whereupon the transfer station 15/2 then pulls the recording medium printed from the front out of the loop puller 29/2 to print on the back.
- This alternating front and back print with sheet-by-sheet start-stop of the recording medium corresponds approximately to the printing rhythm of a single sheet machine with duplex operation.
- the start-stop operation can be omitted for longer simplex printing, in which case only one of the two transfer printing stations 15/1 or 15/2 is active in one embodiment of the printing device according to FIG.
- a switchable simplex transport channel 32 is arranged directly between the storage area 22 and the second transfer printing station 15/2, which feeds the tape-shaped recording medium directly to the second transfer printing station 15/2.
- the toner images are generated in the usual way via the electrophotographic printing units with an associated control.
- the printing device is also suitable for multi-color printing.
- two developer stations 14/1 and 14/2 which extend over the entire width of the photoconductor drum, can be arranged. These can be controlled separately from one another and contain toners of different colors. For example, in the fixation station 14/2 black toner and in the fixation station 14/1 red toner.
- the memory areas contain VF1 of the page memory SP contains the image data of a front page image, for example the color red, and the memory area VF2 of the page memory SP contains the image data of a front page color image, for example the color black.
- a red toner image for example, is first generated via the transfer printing station 15/1 and temporarily stored in the mechanical buffer memory 29. The transfer printing station 15/1 is then pivoted away from the photoconductor drum 11 and the transfer printing station 15/2 pivoted in the manner described.
- the black toner image is moved out of the buffer memory 22 and passed over the transfer station 15/2.
- the turning station is either pulled out of the device or the record carrier is passed unturned through the turning station or around the turning station.
- a printing device can also contain a paper width setting device 33 indicated by arrows, with which it is possible to use recording media of different widths.
- This width adjustment device can e.g. consist of an adjustable guide.
- the transfer corrons are thus set to the required start-stop operation Paper web matched that a typeface can be created without gaps (fold printing).
- the operator-side settings and adjustments for the paper web at the first transfer printing station 15/1 are transferred functionally to the second transfer station 15/2 by means of electromechanics and are automatically adjusted here.
- the paper deflections in the turning device 28 can be swiveled in partially automatically.
- transport device 26 conveyor belt
- VFl memory area color 1 (black)
- VF2 memory area color 2 (black)
- HOST data source
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Counters In Electrophotography And Two-Sided Copying (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Color Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4439393 | 1994-11-04 | ||
DE4439393 | 1994-11-04 | ||
PCT/DE1995/000602 WO1996014605A1 (de) | 1994-11-04 | 1995-05-08 | Multifunktionale elektrografische druckeinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0789860A1 true EP0789860A1 (de) | 1997-08-20 |
EP0789860B1 EP0789860B1 (de) | 1999-04-07 |
Family
ID=6532465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95917281A Expired - Lifetime EP0789860B1 (de) | 1994-11-04 | 1995-05-08 | Multifunktionale elektrografische druckeinrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US5713071A (de) |
EP (1) | EP0789860B1 (de) |
JP (1) | JPH10508390A (de) |
DE (1) | DE59505607D1 (de) |
WO (1) | WO1996014605A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7245866B2 (en) | 2000-06-23 | 2007-07-17 | Oce Printing Systems Gmbh | Device and method for a printing and/or copying device with reduced thermal stress on the support material |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6055408A (en) * | 1995-03-24 | 2000-04-25 | Oce Printing Systems Gmbh | Device for the positionally exact synchronization of the parallel course of recording medium webs in an electrographic printer device |
IL113235A (en) * | 1995-04-03 | 2006-07-17 | Hewlett Packard Indigo Bv | Double sided imaging |
US6108513A (en) * | 1995-04-03 | 2000-08-22 | Indigo N.V. | Double sided imaging |
US5860053A (en) * | 1997-09-30 | 1999-01-12 | Xerox Corporation | Two sided imaging of a continuous web substrate with a single print engine with alternating transfer stations |
US5848345A (en) * | 1997-09-30 | 1998-12-08 | Xerox Corporation | Two sided imaging of a continuous web substrate with moving fusers |
US5970304A (en) * | 1997-09-30 | 1999-10-19 | Xerox Corporation | Two sided imaging of a continuous web substrate with a single print engine with in line transfer stations |
US5878320A (en) * | 1997-09-30 | 1999-03-02 | Xerox Corporation | Continuous imaging of a continuous web substrate with a single print engine with a photoreceptor belt seam |
US5875383A (en) * | 1997-09-30 | 1999-02-23 | Xerox Corporation | Dual mode interchangeable modules cut sheet or web printing system with a single xerographic cut sheet print engine |
JPH11301905A (ja) * | 1998-04-24 | 1999-11-02 | Fujitsu Ltd | 用紙搬送補助機構および用紙搬送装置 |
DE19827254B4 (de) * | 1998-06-18 | 2005-09-01 | OCé PRINTING SYSTEMS GMBH | Elektrografische Druckeinrichtung mit zwei Druckwerken, die auf eine umgelenkte Materialbahn drucken |
DE29919094U1 (de) * | 1999-10-29 | 1999-12-30 | Océ Printing Systems GmbH, 85586 Poing | Drucksystem für Paralleldruck mit versetzten Druckseiten auf zwei Aufzeichnungsträger |
US8935980B2 (en) * | 2008-02-29 | 2015-01-20 | Hewlett-Packard Indigo B.V. | Systems and methods of printing to a web substrate |
JP5321295B2 (ja) * | 2009-07-02 | 2013-10-23 | 富士ゼロックス株式会社 | 媒体搬送装置、画像形成装置、及び画像形成システム |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3221059A1 (de) * | 1982-06-04 | 1983-12-08 | Canon K.K., Tokyo | Verfahren zur erzeugung von zweiseitigen kopien sowie geraet zur durchfuehrung des verfahrens |
DE3406244A1 (de) * | 1984-02-21 | 1985-08-22 | Siemens AG, 1000 Berlin und 8000 München | Laserdrucksystem fuer mehrfarben- und rueckseitendruck |
WO1989004510A1 (en) * | 1987-11-10 | 1989-05-18 | Eastman Kodak Company | Electrostatographic method and apparatus for producing multicolor duplex reproductions |
EP0469164B1 (de) * | 1990-07-30 | 1994-11-30 | Toray Industries, Inc. | Elektrophotographisches Druckgerät |
US5408302A (en) * | 1991-02-05 | 1995-04-18 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Printing or copying machine with a belt-type transfer element with associated electrostatic device for transferring toner images from an intermediate image-carrier |
DE59400956D1 (de) * | 1993-05-19 | 1996-12-05 | Siemens Nixdorf Inf Syst | Elektrografische druckeinrichtung zum bedrucken von bandförmigen aufzeichnungsträgern unterschiedlicher bandbreite |
-
1995
- 1995-05-08 WO PCT/DE1995/000602 patent/WO1996014605A1/de active IP Right Grant
- 1995-05-08 US US08/624,461 patent/US5713071A/en not_active Ceased
- 1995-05-08 JP JP8509788A patent/JPH10508390A/ja active Pending
- 1995-05-08 DE DE59505607T patent/DE59505607D1/de not_active Expired - Fee Related
- 1995-05-08 EP EP95917281A patent/EP0789860B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9614605A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7245866B2 (en) | 2000-06-23 | 2007-07-17 | Oce Printing Systems Gmbh | Device and method for a printing and/or copying device with reduced thermal stress on the support material |
Also Published As
Publication number | Publication date |
---|---|
JPH10508390A (ja) | 1998-08-18 |
US5713071A (en) | 1998-01-27 |
EP0789860B1 (de) | 1999-04-07 |
DE59505607D1 (de) | 1999-05-12 |
WO1996014605A1 (de) | 1996-05-17 |
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