EP0572050B1 - Appareil d'impression Electrofotographique pour l'impression sur les deux faces d'une bande de papier sans fin, comprenant une unité de fixage thermique - Google Patents

Appareil d'impression Electrofotographique pour l'impression sur les deux faces d'une bande de papier sans fin, comprenant une unité de fixage thermique Download PDF

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Publication number
EP0572050B1
EP0572050B1 EP93113961A EP93113961A EP0572050B1 EP 0572050 B1 EP0572050 B1 EP 0572050B1 EP 93113961 A EP93113961 A EP 93113961A EP 93113961 A EP93113961 A EP 93113961A EP 0572050 B1 EP0572050 B1 EP 0572050B1
Authority
EP
European Patent Office
Prior art keywords
paper
fixing
roller
paper web
printing
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
EP93113961A
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German (de)
English (en)
Other versions
EP0572050A2 (fr
EP0572050A3 (fr
Inventor
Walter Dipl.-Ing. Kopp (Fh)
Josef Dipl.-Ing. Windele (Fh)
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
Priority to EP93113961A priority Critical patent/EP0572050B1/fr
Publication of EP0572050A2 publication Critical patent/EP0572050A2/fr
Publication of EP0572050A3 publication Critical patent/EP0572050A3/fr
Application granted granted Critical
Publication of EP0572050B1 publication Critical patent/EP0572050B1/fr
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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2064—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat combined with pressure
    • 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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
    • G03G15/2028—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with means for handling the copy material in the fixing nip, e.g. introduction guides, stripping means
    • 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
    • G03G15/235—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 preconditioned before transferring the second image, e.g. decurled, or the second image being formed with different operating parameters, e.g. a different fixing temperature
    • 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
    • G03G2215/00172—Apparatus for electrophotographic processes relative to the original handling
    • G03G2215/00206—Original medium
    • G03G2215/00219—Paper
    • G03G2215/00223—Continuous web, i.e. roll

Definitions

  • Electrophotographic printing devices with thermal pressure fixation are generally known.
  • thermal printing technology becomes the record carrier and that toner image lying on the recording medium between two rotating rollers that touch under pressure, carried out.
  • One of the rollers is the so-called Fuser roller, heated.
  • Fuser roller heated.
  • To ensure adequate fixation To achieve adhesion of the toner image to the paper, it is necessary that the toner particles in the fuser be heated above a melting point and flow together and that also the melted Connect the toner particles to the paper structure.
  • the recording medium With increasing printing speed and thus increased Transport speed of the record carrier the heat-up time of the recording medium is reduced and thus the achievable fixing temperature on the record carrier. At higher transport speeds of the The recording medium is the required fixing temperature without additional heating of the record carrier no longer available, especially if it is a recording medium with high basis weights acts.
  • This method has the disadvantage that it is on the back the continuous paper web has no already fixed print may be located, otherwise it is due to the high preheating temperature is dissolved and destroyed.
  • a module operation of two printing devices the first prints the front and the second prints the back, is not possible.
  • Thermal printing fixation stations are therefore fixatives have only been used in continuous paper printers, that print the continuous paper web on one side.
  • the chemical cold fixing stations for fixing the toner images use.
  • Such printing devices are e.g. known from US-A-4,609,279.
  • To also toner with a high melting point at high fixing speed is from the DE-A 27 17 260 a heat fusion fixture for known toner images on a recording medium are known, which has a preheating saddle, the preheating saddle is pivotally mounted in the direction of the fixing roller. This allows the wrap angle of the record carrier can be set on the fuser roller.
  • this heat-melt fixing device also sets the Existence of a heated preheating saddle as absolutely necessary for optimal heat fusion fixation ahead.
  • the aim of the invention is an electrophotographic Design printing device for continuous paper so that with the printing device also one already fixed with one Printed recording medium provided with a toner image can be without that already on the record carrier existing toner image is blurred.
  • Another object of the invention is for an electrophotographic Duplex printing device with continuous paper works to provide a fuser that is simple is built up and enables high printing speeds.
  • Another object of the invention is also to provide a electrophotographic duplex printing device with continuous paper works so that an offset-free and wipe-free fixing of the printed image on a Continuous paper web during a start and stop process the paper web is possible.
  • a thermal printing fixing station is used to fix the toner image
  • the one to fix the toner image Contacting heated fuser roller and a pressure roller has, between which the continuous paper web is passed is and is designed such that the fixation the toner image only in the area of the heated Fixing roller and the pressure roller while avoiding a Damage to an already fixed
  • the pressure roller contacting toner image can also be Printing devices that work with continuous paper and at where the toner images are fixed by heat, duplex printing produce. The heat supply for the fixing process is done solely on the fusing roller.
  • the continuous paper is looped around when fixing Fusing roller that you have a long enough distance to heat up the paper web has available, it is surprisingly possible to do without a preheating saddle and the continuous paper web alone over the fusing roller to fix.
  • the paper web must wrap tightly around the fuser roller, what can be brought about by a paper brake. Under application this preheating principle can be a fuser build that is inexpensive and space-saving.
  • this preheating principle can be a fuser build that is inexpensive and space-saving.
  • the invention is therefore the pivoting of the paper guide saddle and paper transport with the help controlled by a microprocessor-controlled arrangement that during the movement of the paper guide saddle Place the continuous paper on the fuser roller and at None swiveling the continuous paper off the fusing roller Relative movement in the contact area between continuous paper and fuser roller can occur.
  • the recording medium is in the transfer printing station of the electrophotographic printing device via a tractor drive transported in the transport perforations of the record carrier intervenes and then the fixation takes place in a thermal pressure fixing station with friction drive, see above there is a difference between the two due to tolerances Paper speeds, leading to a paper tear respectively a reduction in print quality due to fluttering of the Record carrier can lead.
  • the Invention between transfer station and fuser Loop puller arranged, its position via scanner is scanned.
  • the Loop puller drives the fusing roller in the one position faster and slower in the other position driven as the drive of the constantly running Paper transport device of the transfer station.
  • One working on the principle of electrophotography Printing device has a supply table 10 for receiving a supply stack 11 made of pre-folded continuous paper 12 on.
  • the continuous paper is fed through a paper dividing device 13 and a swivelable one provided with paper guide elements Actuating rocker 14 the actual electrophotographic printing unit 15 supplied.
  • This Printing unit 15 has one on a photoconductor drum 16 pivoting transfer station 17 on, and around Photoconductor drum 16 arranged for electrophotographic Process necessary facilities.
  • toner image On the continuous paper in the usual way with the aid of a charging device 18 charged photoconductor drum 16 depending on a character Discharge LED character generator 19, and the so generated Charge image in a developer station 20 with a developer mixture colored from toner and carrier particles.
  • the toner image is then in the transfer station 17 on the Transfer continuous paper 12.
  • the photoconductor drum 16 unloaded via an unloading station 21 and cleaned in a cleaning station 22 and again charged via the charging device 18.
  • the paper web 12 provided with a toner image is then fixed in a fixing station 23 by heat and placed on a storage table 24.
  • a storage table 24 In the illustrated Embodiment of the printing device is the storage table 24 via a swivel lever 25 for relief the removal of the printed paper stack 26 can be swung out designed.
  • the paper web 12 can also be external Paper feed channels 27 of the paper dividing device 13 be fed directly. It is also possible an external endless supply stack 28 as a supply stack use. Separate can be used to feed the paper web Paper feed elements with paper rollers 29 necessary be.
  • Particles such as paper clips or other metal parts to prevent in the printing unit 15 is either on Entrance area to the transfer station 17 or in the transfer station integrated a particle trap 30/1, 30/2 arranged.
  • the printing device also has one on the Actuating rocker 14 activatable paper loading device with assigned paper brake 31.
  • the operating rocker 14 is in the area the transfer station on an axis 41 fixed to the frame Holding elements 42 rotatably mounted.
  • the transfer station itself is also swiveling on a frame-fixed Axle mounted.
  • the transfer station contains one Tractor drive with two perforations on the side of continuous paper 12 engaging tractor belts 44 transport nipples 45 arranged thereon. Guided and stored are the tractor belts 44 on two over axes interconnected drive wheel pairs 46, the The tractors are driven by a motor M (FIG. 2), which is coupled to the large pair of drive wheels.
  • M motor
  • At the Transporting the continuous paper 12 is the continuous paper through its perforation holes in the direction of transport of the paper seen both before and after the transfer area the transfer station in engagement with the tractor belts 44.
  • four transport flaps 50 are provided the continuous paper in the area of the perforation holes press tractor belts 44.
  • the position of the paper guide flap 84 becomes scanned via two sensors 84/1 and 84/2 and dependent of which the drive of the fixing station 23 is controlled. E.g. runs the drive of the fuser the lower one becomes faster than that of the transfer printing station 23 Sensor 84/2 operated and the fuser 23 braked. If the transfer station 23 runs slower than the fusing station, the paper flap 84 is deflected more and this deflection detected by the sensor 84/1.
  • a suction chamber 85 is also located in the paper guide channel 80 arranged, which extends across the entire width of the paper guide channel extends and not with one here illustrated vacuum generating device cooperates.
  • the suction chamber has the function of a paper brake, to keep the paper safe when the paper transport is interrupted to be able to brake and in order for an even Retention force of the paper during transport through the fuser to care.
  • the continuous paper is still on the Cover plate of the traverse 81, which is between the transfer station 17th and fixing station 23, and the suction chamber 85 is pushed.
  • the control arrangement D the paper guide saddle 93 over the cams 94 brought into the loading position B.
  • the continuous paper falls down through the insertion profiles 95 in the area of the paper transport rollers 96 (Pulling rollers) of the one driven just below the fixing station 23 Bring Stacker 99.
  • FIG. 9 in turn shows that of the individual units of the Paper transport delivered or removed paper path S in millimeters depending on the time T in milliseconds.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Paper Feeding For Electrophotography (AREA)

Claims (12)

  1. Dispositif d'impression électrographique ou magnétique pour imprimer une bande de papier sans fin sur une face ou sur les deux faces, comprenant
    des moyens (27, 29) pour acheminer à un dispositif d'impression alternativement une bande de papier sans fin non imprimée (12) ou une bande de papier sans fin qui présente déjà une image de toner fixée sur une face,
    un poste de report (17) comprenant des moyens pour reporter une image de toner produite et encrée sur un support intermédiaire (16) sur la bande de papier sans fin (12) non imprimée ou sur la face de la bande de papier sans fin déjà imprimée qui est à l'opposé de l'image de toner fixée,
    un poste de fixage électrothermique (23) agencé en aval du poste de report (17), en considérant le sens du transport du papier, qui présente un rouleau de fixage chauffé (86) entrant en contact avec l'image de toner pour assurer le fixage, et un rouleau de pression (87), entre lesquels défile la bande de papier sans fin, ainsi qu'une selle (93) de guidage du papier non chauffée, qui peut être rapprochée ou écartée du rouleau de fixage (86) par un mouvement angulaire, et au moyen de laquelle le papier sans fin est guidé autour du rouleau de fixage (86), avant le fixage proprement dit, sur un angle d'embrassement (U) qui peut être prédéterminé par la position angulaire de la selle (93) de guidage du papier, tout en évitant les déplacements relatifs entre l'image de toner et le rouleau de fixage (86).
  2. Dispositif d'impression électrographique ou magnétique, comprenant deux dispositifs d'impression élémentaires couplés pour imprimer une bande de papier sans fin (12) sur les deux faces de celle-ci, dans lequel l'un au moins des deux dispositifs d'impression élémentaires présente :
    des moyens (27, 29) pour acheminer une bande de papier sans fin qui porte déjà sur une face une image de toner produite et fixée par l'un des dispositifs d'impression élémentaires,
    un poste de report (17) muni d'un dispositif de transport intégré (44) du papier, pour reporter une image de toner produite et encrée sur un support intermédiaire (16), sur une face de la bande de papier sans fin déjà imprimée qui est à l'opposé de l'image de toner fixée,
    un poste de fixage électrothermique (23) agencé en aval du poste de report (17), en considérant le sens du transport du papier, qui présente un rouleau de fixage chauffé (86) entrant en contact avec l'image de toner pour assurer le fixage, et un rouleau de pression (87), entre lesquels défile la bande de papier sans fin, ainsi qu'une selle (93) de guidage du papier non chauffée, qui peut être rapprochée ou écartée du rouleau de fixage (86) par un mouvement angulaire, et au moyen de laquelle le papier sans fin est guidé autour du rouleau de fixage (86), avant le fixage proprement dit, sur un angle d'embrassement (U) qui peut être prédéterminé par la position angulaire de la selle (93) de guidage du papier, tout en évitant les déplacements relatifs entre l'image de toner et le rouleau de fixage (86).
  3. Dispositif d'impression selon l'une des revendications 1 et 2, comprenant :
    des moyens (20) pour développer l'image de toner en utilisant du toner à base de polystyrène-butyle-méthacrylate ou à base de polyester, d'une température de fusion qui permet de fixer le toner sur la bande de papier sans fin exclusivement dans la région du rouleau de fixage chauffé (86) et du rouleau de pression (87).
  4. Dispositif d'impression selon l'une des revendications 1 à 3, dans lequel la chaleur utilisée pour le processus de fixage est apportée exclusivement par l'intermédiaire du rouleau de fixage chauffé (86).
  5. Dispositif d'impression selon l'une des revendications 1 à 4, comprenant :
    un rouleau de fixage (86) chauffé électriquement, entraíné par un moteur électrique,
    un rouleau de pression (87) qui peut être rapproché ou écarté du rouleau de fixage par un mouvement angulaire, dans une région de fixage (PB-PC).
  6. Dispositif d'impression selon la revendication 5, comprenant :
    un dispositif (85) agencé en amont du poste de fixage (23), en considérant le sens du transport du papier, pour tendre la bande de papier sans fin (12) entre la région de fixage (PB-PC) et l'élément de guidage du papier (93) selon le besoin.
  7. Dispositif d'impression selon la revendication 6, comprenant :
    une chambre d'aspiration à dépression jouant le rôle de frein de papier (85).
  8. Dispositif d'impression selon l'une des revendications 1 à 7, comprenant :
    un dispositif capteur de transport du papier (84, 84/1, 84/2) qui détecte le transport du papier à travers le poste de fixage (23), et qui est couplé à un dispositif de commande (D) associé au poste de fixage (23), ledit dispositif de commande (D) réglant l'entraínement du rouleau de fixage (86) pour l'accorder à la vitesse de transport du papier dans la région du poste de report (17), en fonction des signaux du dispositif capteur de transport du papier (84, 84/1, 84/2).
  9. Dispositif d'impression selon l'une des revendications 1 à 8, comprenant :
    un volet déflecteur de papier (84), mobile, disposé entre le poste de report (17) et le poste de fixage (23), et en appui contre la bande de papier sans fin (12).
  10. Dispositif d'impression selon la revendication 9, dans lequel, pour transformer le volet déflecteur de papier (84) en dispositif capteur de transport du papier (84, 84/1, 84/2), il est prévu, dans la région du volet déflecteur de papier (84), des capteurs (84/1, 84/2) qui détectent la position du volet déflecteur de papier (84).
  11. Dispositif d'impression selon l'une des revendications 1 à 10, dans lequel la bande de papier sans fin (12) est acheminée au dispositif d'impression par l'intermédiaire d'éléments d'acheminement du papier possédant des rouleaux guide-papier supérieur et inférieur (29).
  12. Procédé pour imprimer une bande de papier sans fin (12) sur les deux faces au moyen d'un ou de deux dispositifs d'impression électrographiques ou magnétiques couplés, présentant les caractéristiques suivantes :
    on dépose une image de toner fixée à l'aide d'un dispositif d'impression sur une face de la bande de papier sans fin,
    on achemine la bande de papier sans fin (12) imprimée sur une face à un autre dispositif d'impression ou au même dispositif d'impression,
    on dépose une image de toner sur l'autre face, non imprimée, de la bande de papier sans fin (12) avec l'aide d'un poste de report (17),
    on fixe l'image de toner par la chaleur et la pression, exclusivement avec l'aide d'un poste de fixage électrothermique (23) associé au dispositif d'impression et agencé en aval du poste de report (17), en considérant le sens du transport du papier, qui présente un rouleau de fixage chauffé (86) entrant en contact avec l'image de toner pour assurer le fixage, et un rouleau de pression (87), entre lesquels défile la bande de papier sans fin, ainsi qu'une selle (93) de guidage du papier non chauffée, mobile selon un mouvement angulaire, disposée en amont du rouleau de fixage (86), en considérant dans le sens du transport du papier, et au moyen de laquelle le papier sans fin est guidé autour du rouleau de fixage (86), avant le fixage proprement dit, sur un angle d'embrassement (U) qui peut être prédéterminé par la position angulaire de la selle (93) de guidage du papier, tout en évitant les déplacements relatifs entre l'image de toner et le rouleau de fixage (86).
EP93113961A 1989-12-13 1990-12-04 Appareil d'impression Electrofotographique pour l'impression sur les deux faces d'une bande de papier sans fin, comprenant une unité de fixage thermique Expired - Lifetime EP0572050B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93113961A EP0572050B1 (fr) 1989-12-13 1990-12-04 Appareil d'impression Electrofotographique pour l'impression sur les deux faces d'une bande de papier sans fin, comprenant une unité de fixage thermique

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP89123027 1989-12-13
EP89123027 1989-12-13
EP93113961A EP0572050B1 (fr) 1989-12-13 1990-12-04 Appareil d'impression Electrofotographique pour l'impression sur les deux faces d'une bande de papier sans fin, comprenant une unité de fixage thermique
EP91900795A EP0505418B1 (fr) 1989-12-13 1990-12-04 Dispositif d'impression electrophotographique de papier en bobines avec une station de fixage thermique de l'impression

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP91900795.5 Division 1991-07-12

Publications (3)

Publication Number Publication Date
EP0572050A2 EP0572050A2 (fr) 1993-12-01
EP0572050A3 EP0572050A3 (fr) 1994-11-09
EP0572050B1 true EP0572050B1 (fr) 1998-01-21

Family

ID=8202225

Family Applications (2)

Application Number Title Priority Date Filing Date
EP93113961A Expired - Lifetime EP0572050B1 (fr) 1989-12-13 1990-12-04 Appareil d'impression Electrofotographique pour l'impression sur les deux faces d'une bande de papier sans fin, comprenant une unité de fixage thermique
EP91900795A Expired - Lifetime EP0505418B1 (fr) 1989-12-13 1990-12-04 Dispositif d'impression electrophotographique de papier en bobines avec une station de fixage thermique de l'impression

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP91900795A Expired - Lifetime EP0505418B1 (fr) 1989-12-13 1990-12-04 Dispositif d'impression electrophotographique de papier en bobines avec une station de fixage thermique de l'impression

Country Status (4)

Country Link
EP (2) EP0572050B1 (fr)
JP (1) JP2950985B2 (fr)
DE (2) DE59010799D1 (fr)
WO (1) WO1991009352A1 (fr)

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JPH07160137A (ja) * 1993-12-01 1995-06-23 Hitachi Ltd 定着装置及び定着方法並びに記録装置
DE4414733C1 (de) * 1994-04-27 1995-06-01 Siemens Nixdorf Inf Syst System und Verfahren zur Vermeidung von Schlupf beim Transport eines Aufzeichnungsträgers in einem elektrografischen Druck- oder Kopiergerät
EP0771437B1 (fr) * 1994-07-15 1999-07-07 Océ Printing Systems GmbH Systeme d'impression multifonctionnel de conception modulaire
DE19510728C1 (de) * 1995-03-24 1996-10-17 Siemens Nixdorf Inf Syst Einrichtung zum positionsgenauen Synchronisieren des Parallellaufs von Aufzeichnungsträgerbahnen in einer elektrografischen Druckeinrichtung
DE19533717C1 (de) * 1995-09-12 1997-04-10 Oce Printing Systems Gmbh Führungssattel in einer Fixierstation mit verschleißarmer Umlenkkante
EP0857323B1 (fr) * 1995-10-27 2001-04-25 Océ Printing Systems GmbH Procede permettant de faire fonctionner une imprimante electrographique pour l'impression simultanee de deux sections adjacentes d'une bande
WO1997016767A1 (fr) * 1995-10-27 1997-05-09 Oce Printing Systems Gmbh Procede permettant de faire fonctionner une imprimante electrographique pour l'utilisation de formulaires de differentes longueurs
DE59710225D1 (de) * 1996-03-29 2003-07-10 Oce Printing Systems Gmbh Verfahren zum steuern des betriebs eines druckers, insbesondere des start- und stopp-betriebs
DE19618933C3 (de) * 1996-05-10 2002-12-05 Oce Printing Systems Gmbh Andruckwalze mit reduzierter Wärmedehnung
US5926680A (en) * 1996-07-16 1999-07-20 Asahi Kogaku Kogyo Kabushiki Kaisha Fixing unit
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EP0572050A2 (fr) 1993-12-01
DE59010799D1 (de) 1998-02-26
EP0505418B1 (fr) 1994-04-20
JP2950985B2 (ja) 1999-09-20
EP0572050A3 (fr) 1994-11-09
EP0505418A1 (fr) 1992-09-30
JPH05504634A (ja) 1993-07-15
WO1991009352A1 (fr) 1991-06-27
DE59005481D1 (de) 1994-05-26

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