EP0490087A1 - Device for smoothing the sheets on the impression cylinder of a sheet-fed rotary printing machine - Google Patents

Device for smoothing the sheets on the impression cylinder of a sheet-fed rotary printing machine Download PDF

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Publication number
EP0490087A1
EP0490087A1 EP91119118A EP91119118A EP0490087A1 EP 0490087 A1 EP0490087 A1 EP 0490087A1 EP 91119118 A EP91119118 A EP 91119118A EP 91119118 A EP91119118 A EP 91119118A EP 0490087 A1 EP0490087 A1 EP 0490087A1
Authority
EP
European Patent Office
Prior art keywords
sheet
printing
nozzle
impression cylinder
lance nozzle
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
Application number
EP91119118A
Other languages
German (de)
French (fr)
Other versions
EP0490087B1 (en
Inventor
Dieter Bergmeier
Arno Wirz
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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
Priority claimed from DE19904039311 external-priority patent/DE4039311A1/en
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0490087A1 publication Critical patent/EP0490087A1/en
Application granted granted Critical
Publication of EP0490087B1 publication Critical patent/EP0490087B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/102—Combinations of transfer drums and grippers with pneumatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F25/00—Devices for pressing sheets or webs against cylinders, e.g. for smoothing purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web

Definitions

  • the invention relates to a device for smoothing sheets on the impression cylinder in a sheet-fed printing press.
  • the main patent describes a device in which a blowing nozzle is moved and acted upon in an oscillating manner in the work cycle of the machine, so that the printing sheet is placed securely and firmly on the printing cylinder before it enters the printing gap and greater security for duplication-free and smear-free printing is also sought at high printing speeds.
  • a sword nozzle which extends over a substantial part of the width, preferably over the entire width of the printing cylinder, is particularly suitable for this purpose. This has a non-contact effect on the printing sheet for the purpose of achieving a secure and smooth contact with the printing cylinder before it enters the printing nip.
  • the object of the invention is to achieve a further improvement with the same objective as in the main patent, regardless of the type of paper.
  • This effect can be achieved by a curved blow nozzle, so that the blowing air emerging from the blow nozzle first reaches the sheet at its front edge and then smoothes the sheet to the sheet rear edge and on both sides.
  • a blowing nozzle in the form of an arrow is provided, in which the tip is directed against the running direction of the sheet.
  • a blowing nozzle 8 is directed against the circumference of the printing cylinder 3 at a certain distance in front of the printing nip 5 and is mounted such that it can pivot about a pendulum axis 9 and can be coupled to a drive which drives the blowing nozzle 8 swings back and forth in the machine's work cycle, swinging in the running direction of the sheet.
  • the blowing nozzle 8 is designed as a sword nozzle, or as a sword consisting of many individual nozzles or openings, so that their nozzle opening extends over a substantial part of the width of the printing cylinder 3, advantageously over its entire width.
  • each nozzle can advantageously be regulated individually.
  • the sword nozzle 8 is fastened to a tube 11 so that it can be adjusted in the circumferential direction.
  • the tube 11 is swingably mounted about its longitudinal axis in the frame 12 of the machine.
  • a lever mechanism 13 is suitable for driving the pendulum movement.
  • the sword nozzle 8 is pushed with a tubular housing 17 onto the jacket of a valve collar 14, which is adjustable relative to a frame part 15 by means of a screw 16.
  • the valve collar 14 is guided laterally by a driver 18.
  • a radially directed connection 19 for the air line passes through the housing 17 and is fastened with the inner end in the valve collar 14.
  • the air control for the sword nozzle 8 takes place through the overlap of radial openings in the tube 11 with the inner end of the connection 19 or the passage in the housing 17 to the sword nozzle 8.
  • Settings, controls and effects correspond to the representation in the main patent.
  • the sword nozzle 8 has an arrow shape directed with the tip against the running direction of the bow 1, as shown in FIG. 3, which shows a plan view of the arrow shape of the sword nozzle 8.

Abstract

The additional patent describes a device for smooth placing of sheets (1) on the impression cylinder (3) ahead of the printing gap (5) of a sheet-fed rotary offset printing machine, in which device a lance nozzle (8), which can be directed towards the circumference of the impression cylinder (3) and extends over a substantial part of the width of the impression cylinder (3), is provided for pressing the sheet (1) on by the dynamic effect of flowing air. This lance nozzle (8) is mounted with spacing ahead of the printing gap (5) so as to oscillate about an axis (9) of oscillation parallel to the axis of the impression cylinder (3) and can be coupled to a drive which moves the lance nozzle (8) back and forth in phase with the machine, oscillating in the running direction of the sheet (1). In constrast to the principal patent, the lance nozzle (8) has a shape in which the ends are offset relative to a central region in the running direction of the sheet so that a centrally leading smoothing of the sheet (1) takes place from the leading edge to the trailing edge of the sheet and from the centre of the sheet to the two outsides. Preference is given to a lance nozzle (8) which has an arrow-type shape directed with the tip counter to the running direction of the sheet. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Bogenglättung am Druckzylinder in einer Bogendruckmaschine nach dem Oberbegriff des Patentanspruches 1.The invention relates to a device for smoothing sheets on the impression cylinder in a sheet-fed printing press.

Ausgehend von einem Stand der Technik nach der EP-A-0 306 684 wird in dem Hauptpatent eine Vorrichtung beschrieben, bei der durch eine im Arbeitstakt der Maschine schwingend bewegte und beaufschlagte Blasdüse ein sicheres und sattes Auflegen des Druckbogens auf dem Druckzylinder vor dem Einlauf in den Druckspalt und eine größere Sicherheit für einen dublierfreien und abschmierfreien Druck auch bei hohen Druckgeschwindigkeiten angestrebt wird. Dazu ist eine Schwertdüse besonders geeignet, die sich über einen wesentlichen Teil der Breite, vorzugsweise über die gesamte Breite des Druckzylinders, erstreckt. Dadurch erfolgt eine berührungslose Einwirkung auf den Druckbogen zum Zwecke der Erzielung einer sicheren und glatten Anlage am Druckzylinder vor dem Einlauf in den Druckspalt.Starting from a state of the art according to EP-A-0 306 684, the main patent describes a device in which a blowing nozzle is moved and acted upon in an oscillating manner in the work cycle of the machine, so that the printing sheet is placed securely and firmly on the printing cylinder before it enters the printing gap and greater security for duplication-free and smear-free printing is also sought at high printing speeds. A sword nozzle, which extends over a substantial part of the width, preferably over the entire width of the printing cylinder, is particularly suitable for this purpose. This has a non-contact effect on the printing sheet for the purpose of achieving a secure and smooth contact with the printing cylinder before it enters the printing nip.

Aufgabe der Erfindung ist, eine weitere Verbesserung mit der gleichen Zielsetzung wie im Hauptpatent, unabhängig von der Papiersorte, zu erreichen.The object of the invention is to achieve a further improvement with the same objective as in the main patent, regardless of the type of paper.

Dazu ist in weiterer Ausgestaltung der Anordnung nach dem Hauptpatent eine Ausbildung mit Merkmalen nach dem Kennzeichen des Patentanspruches 1 vorgesehen.For this purpose, in a further embodiment of the arrangement according to the main patent, training with features according to the characterizing part of patent claim 1 is provided.

Durch diese Ausbildungsmerkmale eilt der aus der Blasdüse austretende Luftstrom in der Bogenmitte entgegen der Laufrichtung des Bogens vor, so daß eine Glättbewegung durch den Luftstrom nicht nur in Richtung von der Bogenvorderkante zur Bogenhinterkante, sondern auch von der Mitte nach beiden Seiten erfolgt.By means of these design features, the air flow emerging from the blow nozzle leads in the middle of the sheet against the running direction of the sheet, so that a smoothing movement by the air flow not only in the direction from the sheet leading edge to the trailing edge of the sheet, but also from the center to both sides.

Diese Wirkung kann durch eine gebogen geformte Blasdüse erreicht werden, so daß die aus der Blasdüse austretende Blasluft den Bogen an seiner Vorderkante zuerst erreicht und den Bogen dann zur Bogenhinterkante und nach beiden Seiten glättet. Bei einer bevorzugten Ausführung ist eine Blasdüse in Pfeilform vorgesehen, bei der die Spitze gegen die Laufrichtung des Bogens gerichtet ist.This effect can be achieved by a curved blow nozzle, so that the blowing air emerging from the blow nozzle first reaches the sheet at its front edge and then smoothes the sheet to the sheet rear edge and on both sides. In a preferred embodiment, a blowing nozzle in the form of an arrow is provided, in which the tip is directed against the running direction of the sheet.

Die Erfindung wird anhand eines auf der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

Figur 1
eine Seitenansicht eines Druckwerks einer Bogenrotationsoffsetdruckmaschine,
Figur 2
eine im Maßstab gegenüber der Figur 1 vergrößerte Ansicht der Glattstreichdüse in Laufrichtung des Druckbogens gesehen und
Figur 3
einen Schnitt nach der Linie III - III der Figur 2.
The invention is explained in more detail using an exemplary embodiment shown in the drawing. Show it:
Figure 1
a side view of a printing unit of a sheet-fed rotary offset printing machine,
Figure 2
seen on a larger scale compared to Figure 1 view of the smoothing nozzle in the direction of the sheet and
Figure 3
a section along the line III - III of Figure 2.

In übereinstimmung mit der Anordnung nach dem Hauptpatent wird der von einem vorausgehenden Druckwerk übernommene Druckbogen 1 von einer Überführungstrommel 2 dem Druckzylinder 3 eines nachfolgenden Druckwerks übergeben. Die Bogengreifer 4 erfassen den Druckbogen 1 im Tangentenpunkt zwischen der Überführungstrommel 2 und dem Druckzylinder 3 und ziehen den Druckbogen durch den Druckspalt 5 zwischen dem Druckzylinder 3 und dem Gummituchzylinder 6. Hinter dem Druckspalt 5 wird der Druckbogen 1 einer weiteren Überführungstrommel 7 zugeführt, die den Druckbogen 1 an ein weiteres Druckwerk übergibt.In accordance with the arrangement according to the main patent, the printing sheet 1 taken over from a previous printing unit is transferred from a transfer drum 2 to the printing cylinder 3 of a subsequent printing unit. The sheet grippers 4 grasp the printing sheet 1 at the tangent point between the transfer drum 2 and the printing cylinder 3 and pull the printing sheet through the printing gap 5 between the printing cylinder 3 and the blanket cylinder 6. Behind the printing gap 5, the printing sheet 1 is fed to a further transfer drum 7, which Passes sheet 1 to another printing unit.

Zur Erzielung einer sicheren und satten Anlage des Druckbogens 1 am Umfang des Druckzylinders 3 ist mit einem gewissen Abstand vor dem Druckspalt 5 eine Blasdüse 8 gegen den Umfang des Druckzylinders 3 gerichtet und um eine Pendelachse 9 pendelbar gelagert sowie mit einem Antrieb kuppelbar, der die Blasdüse 8 im Arbeitstakt der Maschine schwingend in Laufrichtung des Bogens vor- und zurückbewegt. Die Blasdüse 8 ist als Schwertdüse ausgebildet, oder als Schwert bestehend aus vielen Einzeldüsen bzw. öffnungen, so daß sich deren Düsenöffnung über einen wesentlichen Teil der Breite des Druckzylinders 3, vorteilhaft über dessen gesamte Breite, erstreckt. Der Winkelbereich, in dem sich die Blasdüse 8 schwingend bewegt, ist einstellbar, und zwar so, daß sowohl der Anstellwinkel der Blasrichtung gegenüber der Normalen durch die Pendelachse 9 auf den Umfang des Druckzylinders 3 als auch der Schwenkwinkel einstellbar sind.To achieve a secure and full contact of the printing sheet 1 on the circumference of the printing cylinder 3, a blowing nozzle 8 is directed against the circumference of the printing cylinder 3 at a certain distance in front of the printing nip 5 and is mounted such that it can pivot about a pendulum axis 9 and can be coupled to a drive which drives the blowing nozzle 8 swings back and forth in the machine's work cycle, swinging in the running direction of the sheet. The blowing nozzle 8 is designed as a sword nozzle, or as a sword consisting of many individual nozzles or openings, so that their nozzle opening extends over a substantial part of the width of the printing cylinder 3, advantageously over its entire width. The angular range in which the blowing nozzle 8 swings is adjustable, in such a way that both the angle of attack of the blowing direction with respect to the normal through the pendulum axis 9 on the circumference of the pressure cylinder 3 and the pivoting angle are adjustable.

Im Falle, daß die Schwertdüse aus lauter Einzeldüsen besteht, kann in vorteilhafterweise jede Düse für sich geregelt werden. Bei dem Ausführungsbeispiel ist die Schwertdüse 8 an einem Rohr 11 in dessen Umfangsrichtung verstellbar befestigt. Das Rohr 11 ist um seine Längsachse schwingend pendelbar in dem Gestell 12 der Maschine gelagert. Für den Antrieb der Pendelbewegung ist ein Hebelgetriebe 13 beispielsweise geeignet. Die Schwertdüse 8 ist mit einem rohrförmigen Gehäuse 17 auf dem Mantel eines Ventilstellringes 14 aufgeschoben, der gegenüber einem Gestellteil 15 mittels einer Schraube 16 einstellbar ist. Der Ventilstellring 14 ist durch einen Mitnehmer 18 seitlich geführt. Ein radial gerichteter Anschluß 19 für die auf der Zeichnung nicht dargestellte Luftleitung durchgreift das Gehäuse 17 und ist mit dem inneren Ende in dem Ventilstellring 14 befestigt. Die Luftsteuerung für die Schwertdüse 8 erfolgt durch die überdeckung radialer öffnungen im Rohr 11 mit dem inneren Ende des Anschlusses 19 bzw. des Durchganges in dem Gehäuse 17 zu der Schwertdüse 8. Einstellungen, Steuerungen und Wirkungen entsprechen der Darstellung in dem Hauptpatent. Die Schwertdüse 8 weist bei dem Ausführungsbeispiel eine mit der Spitze gegen die Laufrichtung des Bogens 1 gerichtete Pfeilform auf, wie es in der Figur 3 dargestellt ist, die eine Draufsicht auf die Pfeilform der Schwertdüse 8 zeigt. Anstelle einer solchen Pfeilform können auch gebogen geformte Schwertdüsen zur Anwendung kommen, um den zu bedruckenden Bogen vor dem Einlauf in den Druckspalt zunächst in der Bogenmitte von der Bogenvorderkante zur Bogenhinterkante hin mit Blasluft zu beaufschlagen, um den Bogen von der Vorderkante zur Hinterkante und gleichzeitig von der Mitte nach außen zu glätten, so daß durch diese berührungslose Einwirkung eine sichere und satte Anlage des zu bedruckenden Bogens am Druckzylinder erreicht wird.In the event that the sword nozzle consists of nothing but individual nozzles, each nozzle can advantageously be regulated individually. In the exemplary embodiment, the sword nozzle 8 is fastened to a tube 11 so that it can be adjusted in the circumferential direction. The tube 11 is swingably mounted about its longitudinal axis in the frame 12 of the machine. For example, a lever mechanism 13 is suitable for driving the pendulum movement. The sword nozzle 8 is pushed with a tubular housing 17 onto the jacket of a valve collar 14, which is adjustable relative to a frame part 15 by means of a screw 16. The valve collar 14 is guided laterally by a driver 18. A radially directed connection 19 for the air line, not shown in the drawing, passes through the housing 17 and is fastened with the inner end in the valve collar 14. The air control for the sword nozzle 8 takes place through the overlap of radial openings in the tube 11 with the inner end of the connection 19 or the passage in the housing 17 to the sword nozzle 8. Settings, controls and effects correspond to the representation in the main patent. In the exemplary embodiment, the sword nozzle 8 has an arrow shape directed with the tip against the running direction of the bow 1, as shown in FIG. 3, which shows a plan view of the arrow shape of the sword nozzle 8. Instead of such an arrow shape, curved-shaped sword nozzles can also be used to first blow air to the sheet to be printed in the middle of the sheet from the leading edge to the trailing edge of the sheet before entering the printing nip, in order to move the sheet from the leading edge to the trailing edge and at the same time from smooth the center outwards so that a safe and full contact of the sheet to be printed on the impression cylinder is achieved by this contactless action.

BezugszeichenlisteReference symbol list

11
DruckbogenPrinted sheet
22nd
ÜberführungstrommelTransfer drum
33rd
DruckzylinderPressure cylinder
44th
BogengreiferBow grab
55
DruckspaltPressure gap
66
GummituchzylinderBlanket cylinder
77
ÜberführungstrommelTransfer drum
88th
BlasdüseBlow nozzle
99
PendelachseSwing axle
1010th
1111
Rohrpipe
1212
Gestell der MaschineFrame of the machine
1313
HebelgetriebeLever gear
1414
VentilstellringValve collar
1515
GestellteilFrame part
1616
Schraubescrew
1717th
Gehäusecasing
1818th
MitnehmerCarrier
1919th
Anschluß für LuftConnection for air

Claims (4)

Vorrichtung zum glatten Anlegen von Druckbogen am Druckzylinder vor dem Druckspalt einer Bogenrotationsoffsetdruckmaschine, bei der wenigstens eine gegen den Umfang des Druckzylinders richtbare, sich über einen wesentlichen Teil der Breite des Druckzylinders erstreckende Blasdüse zum Anpressen des Bogens durch die Kraftwirkung strömender Luft mit einem Abstand vor dem Druckspalt um eine parallel zur Achse des Druckzylinders liegende Pendelachse pendelbar gelagert und mit einem Antrieb kuppelbar ist, der die Blasdüse im Arbeitstakt der Maschine schwingend in Laufrichtung des Druckbogens vor- und zurückbewegt, nach Patent 39 20 730.7,
dadurch gekennzeichnet,
daß die Enden der Blasdüse (8) gegenüber einem mittleren Bereich in Laufrichtung des Bogens (1) versetzt sind und eine in der Mitte voreilende Glättung des Bogens (1) von der Bogenvorderkante zur Bogenhinterkante und von der Bogenmitte nach beiden Außenseiten bewirken.Device for smooth application of printing sheets to the printing cylinder in front of the printing nip of a sheet-fed rotary offset printing press, in which at least one blowing nozzle, which can be directed against the circumference of the printing cylinder and extends over a substantial part of the width of the printing cylinder, for pressing the sheet by the force of air flowing at a distance in front of it Printing nip is mounted such that it can swing about a pendulum axis parallel to the axis of the printing cylinder and can be coupled to a drive which moves the blowing nozzle back and forth in the working cycle of the machine in the direction of travel of the printing sheet, in accordance with patent 39 20 730.7.
characterized,
that the ends of the blowing nozzle (8) are offset from a central region in the direction of travel of the sheet (1) and cause a smoothing of the sheet (1) leading in the middle from the sheet leading edge to the sheet trailing edge and from the sheet center to both outer sides. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß eine gebogen geformte Schwertdüse (8) vorgesehen ist.Device according to claim 1,
characterized,
that a curved shaped sword nozzle (8) is provided. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß eine Schwertdüse (8) eine mit der Spitze gegen die Laufrichtung des Bogens (1) gerichtete Pfeilform aufweist.Device according to claim 1,
characterized,
that a sword nozzle (8) has an arrow shape directed with the tip against the running direction of the bow (1). Vorrichtung nach Anspruch 1 bis 3,
dadurch gekennzeichnet,
daß die Schwertdüse aus einzelnen, für sich regelbaren Düsen besteht.Device according to claims 1 to 3,
characterized,
that the sword nozzle consists of individual, controllable nozzles.
EP91119118A 1990-12-10 1991-11-11 Device for smoothing the sheets on the impression cylinder of a sheet-fed rotary printing machine Expired - Lifetime EP0490087B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4039311 1990-12-10
DE19904039311 DE4039311A1 (en) 1989-06-24 1990-12-10 System for smoothing sheet against printing press cylinder - uses air nozzle with ends offset from middle part

Publications (2)

Publication Number Publication Date
EP0490087A1 true EP0490087A1 (en) 1992-06-17
EP0490087B1 EP0490087B1 (en) 1994-11-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91119118A Expired - Lifetime EP0490087B1 (en) 1990-12-10 1991-11-11 Device for smoothing the sheets on the impression cylinder of a sheet-fed rotary printing machine

Country Status (6)

Country Link
EP (1) EP0490087B1 (en)
JP (1) JPH04275150A (en)
CN (1) CN1022554C (en)
AT (1) ATE113533T1 (en)
CA (1) CA2055586C (en)
DE (1) DE59103420D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0919378A1 (en) * 1997-11-29 1999-06-02 MAN Roland Druckmaschinen AG Sheet guide device in the area of the front gripper system in a printing machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523076C5 (en) * 1995-06-24 2007-05-16 Heidelberger Druckmasch Ag Device for achieving a perfect support of a printing substrate in a printing press
DE10000308A1 (en) * 2000-01-05 2001-07-12 Heidelberger Druckmasch Ag Air duct system in a sheet-fed press
JP2008156123A (en) * 2006-12-21 2008-07-10 Heidelberger Druckmas Ag Device for feeding sheet toward machine for processing sheet
CN106629193B (en) * 2016-11-18 2018-01-23 无锡祁龙胶粘制品有限公司 A kind of diaphragm winding flattening device

Citations (7)

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Publication number Priority date Publication date Assignee Title
FR2089099A5 (en) * 1970-04-03 1972-01-07 Overly Inc
DE2459862B1 (en) * 1974-12-18 1976-02-19 Erhardt & Leimer Kg Edge roller for smoothing rolled edges or the like on running webs
DE2603483A1 (en) * 1976-01-30 1977-08-18 Mohn Ohg Reinhard SCHOEN- AND REPRINTING PROCEDURES AND DEVICE FOR CARRYING OUT THE PROCESS
DE3628788A1 (en) * 1985-09-30 1987-04-09 Polygraph Leipzig Blower device in printing machines
DE3835266A1 (en) * 1987-10-29 1989-05-11 Polygraph Leipzig Device for sheet-conveying without smearing
EP0405166A2 (en) * 1989-06-24 1991-01-02 Heidelberger Druckmaschinen Aktiengesellschaft Device for smoothing the sheets on the impression cylinder of a sheet-fed rotary printing machine
EP0306684B1 (en) * 1987-09-11 1992-04-08 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Device for pressing a sheet against the impression cylinder in a rotary sheet-fed printing press for multicolour printing

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Publication number Priority date Publication date Assignee Title
JPS55102373A (en) * 1979-02-01 1980-08-05 Nippon Carbide Ind Co Ltd Preparation of artificial fish egg
JP2628647B2 (en) * 1987-06-08 1997-07-09 デュプロ精工株式会社 Stencil locking device for stencil printing machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2089099A5 (en) * 1970-04-03 1972-01-07 Overly Inc
DE2459862B1 (en) * 1974-12-18 1976-02-19 Erhardt & Leimer Kg Edge roller for smoothing rolled edges or the like on running webs
DE2603483A1 (en) * 1976-01-30 1977-08-18 Mohn Ohg Reinhard SCHOEN- AND REPRINTING PROCEDURES AND DEVICE FOR CARRYING OUT THE PROCESS
DE3628788A1 (en) * 1985-09-30 1987-04-09 Polygraph Leipzig Blower device in printing machines
EP0306684B1 (en) * 1987-09-11 1992-04-08 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Device for pressing a sheet against the impression cylinder in a rotary sheet-fed printing press for multicolour printing
DE3835266A1 (en) * 1987-10-29 1989-05-11 Polygraph Leipzig Device for sheet-conveying without smearing
EP0405166A2 (en) * 1989-06-24 1991-01-02 Heidelberger Druckmaschinen Aktiengesellschaft Device for smoothing the sheets on the impression cylinder of a sheet-fed rotary printing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0919378A1 (en) * 1997-11-29 1999-06-02 MAN Roland Druckmaschinen AG Sheet guide device in the area of the front gripper system in a printing machine

Also Published As

Publication number Publication date
CA2055586C (en) 1995-01-03
EP0490087B1 (en) 1994-11-02
JPH04275150A (en) 1992-09-30
CN1062318A (en) 1992-07-01
CN1022554C (en) 1993-10-27
DE59103420D1 (en) 1994-12-08
ATE113533T1 (en) 1994-11-15

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