EP0999045A1 - Device for protecting the surface of a printing plate - Google Patents

Device for protecting the surface of a printing plate Download PDF

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Publication number
EP0999045A1
EP0999045A1 EP99120856A EP99120856A EP0999045A1 EP 0999045 A1 EP0999045 A1 EP 0999045A1 EP 99120856 A EP99120856 A EP 99120856A EP 99120856 A EP99120856 A EP 99120856A EP 0999045 A1 EP0999045 A1 EP 0999045A1
Authority
EP
European Patent Office
Prior art keywords
printing form
printing
shield
area
cylinder
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
EP99120856A
Other languages
German (de)
French (fr)
Other versions
EP0999045B1 (en
Inventor
Jacques Metrope
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.)
Goss International Montataire SA
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 FR9910630A external-priority patent/FR2785565B1/en
Priority claimed from DE19948925A external-priority patent/DE19948925A1/en
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0999045A1 publication Critical patent/EP0999045A1/en
Application granted granted Critical
Publication of EP0999045B1 publication Critical patent/EP0999045B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F27/00Devices for attaching printing elements or formes to supports
    • B41F27/12Devices for attaching printing elements or formes to supports for attaching flexible printing formes

Definitions

  • the invention relates to a device for shielding the surfaces of Printing forms, such as those on the printing form cylinders of offset rotary printing machines be applied, be it by hand or by means of automatic printing plate changing devices.
  • EP 0 678 383 B1 relates to a device for changing printing forms Rotary printing machines.
  • Printing form cylinders comprise a channel that connects the two Receives ends of a printing form, the surface of the printing forms around the Printing forme cylinder is wound around, and one is still on the Printing form cylinder located printing form released by clamping devices and in a receiving device is transportable and with a device for Feeding of a new printing form to the printing form cylinder.
  • An area of The printing form to be fed is temporarily fixed by swiveling holding means and deformed so elastically that one end of the new printing form for automatic Is inserted into the channel on the outer surface of the printing form cylinder.
  • the printing surface of the printing form rolls directly on a large number of freely rotatable rollers, which are caused by friction in the printing plate surface Rotation. This causes a certain degree of friction between the printing surface of the printing form and the outer peripheral surfaces of the free rotatable roller. Since the printing surface of the printing form is very sensitive, can this can damage the printing form.
  • EP 0 734 859 A1 relates to a device for changing printing forms.
  • a swiveling printing form loading unit comprises both a printing form feed and a mold removal tray.
  • the printing form loading device is both in one Working position on the channel of a printing form cylinder with clamping devices as also pivotable into a loading position in which the printing form loading unit from the Working position is withdrawn.
  • the one that swivels into a vertical loading position Printing form loading unit can be pivoted onto a holding element, on which a Inlet area for a printing form and the printing form cylinder Conveying devices for a printing form to be applied to the printing form cylinder are provided.
  • the solution according to the present invention has a number of advantages hand in hand.
  • Printing form will damage or soiling the printing area effectively precludes the preparatory work necessary for printing. Even those left on automatic feeders or exchangers Color residues cannot cover the printing area of the printing forms affect. Scratching the printing area is now no longer to be feared, since the sensitive, pre-treated areas of the printing form are completely covered by the shield. The only one not at the moment pre-treated areas of the printing form adhering shielding is only at the Pulling the printing form away from this, so that the printing form over the remains protected against external influences for as long as possible.
  • This Coating is applied to the area of the shield outside the printing area of the printing form.
  • the shield may be more preferred Be designed as a film.
  • the shield can also be band-shaped endless running part, it can also be the printing form completely be wrapped.
  • the printing form already provided with the shield can advantageously be attached to a magazine insert for printing plate changing devices recorded and assembled become. This can damage the printing area caused by the in the Printing form changing device recorded stationary guides or through the there provided rotating guide body effective for the printing form be excluded.
  • the magazine insert itself or the Printing form changing devices can be with hooking devices for the area of Be shielded, the length of the printing area to be shielded the printing form.
  • the magazine insert can be used for Printing form changing device also be a driven winding shaft, which during the mounting of the printing form on the jacket of the printing form cylinder the shield is removed from the printing form and is thus ready for assembly the printing form on the circumference of the cylinder.
  • the liability of Shielding on the printing form is just such that, on the one hand, an effective one Protection of the printing area is guaranteed, on the other hand the shielding is to be removed from the printing area without leaving any residue.
  • the criterion of residue-free removal of the shield from the printing area of the printing form important insofar as any remaining residues color the Printing form can significantly affect what the startup of the Rotary printing presses on production speed by required Rework can significantly delay.
  • the printing form according to the invention can in particular in automatic Plate changing devices are used, which the printing units of Rotary printing press are assigned, regardless of whether sheet or web processing Rotary printing machines.
  • Fig. 1 shows a printing form which is provided with an overhanging shield.
  • the printing form 1 has a front edge 3 and a rear edge 2, both of which can be hung in a clamping channel 12 provided on a printing form cylinder 11 and are clamped to the circumference of the printing form cylinder 11 by means of clamping and tensioning devices provided there.
  • the printing form 1 is provided with a printing area 8 which has been pretreated to such an extent that printing can be carried out after the printing form has been opened and the inking has been completed.
  • the printing area is covered by a shield 4, which stops at its adhesive area 5 on the printing form 1, specifically outside the pretreated printing area 8. In the adhesive area 5, for example, a coating can be applied to the shield 4, which prevents the shield 4 from adhering on the printing form 1 enables, on the other hand, can be removed again without leaving any residue.
  • the shield 4 can advantageously be designed as a thin film.
  • openings 6 can be provided with which the shield 4 can be attached to a magazine insert 10.
  • Fig. 2 shows a printing form with a shield, the overhanging area of which is attached to a magazine insert.
  • Fig. 3 shows the mounting of a printing form on a printing form cylinder and Shield removal.
  • the printing form 1 is one with the front edge 3 in the clamping channel 12 Printing form cylinder 11 let in while the printing form cylinder 11 during of the winding process in the direction of rotation 14. While pulling up the Printing form 1 moves this in the drawing direction 15 to the circumference of the Printing form cylinder 11. To the extent that the printing form 1 to be mounted on the Surrounds the circumferential surface of the printing form cylinder 11, the shield 4 of of the printing form 1 and thus the printing area 8 of the printing form 1 successively exposed. So is the printing area 8 of the printing form 1 to immediate before mounting them on the circumference of the printing form cylinder 11 by the Shield 4 effectively protected. The one hung on the hook 9 The overhang area 7 of the shield 4 remains during the mounting of the printing form 1 and the gradual detachment of the shield 4 hang on the catch hook 9, the Adhesive area 5 separates from the printing area 8 without residue.
  • the removal of the adhesive area 5 from the printing form 1 takes place successively during the Mount the printing form on the printing form cylinder 11.
  • the adhesive force of the adhesive Areas of the shield 4 is dimensioned so that on the one hand an effective Protection of the printing area 8 against external influences, on the other hand Liability is such that the shield 4 is completely and residue-free from the Surface of the printing form 1 is removable.
  • the printing form 1, the 16 in the clamped state, the peripheral surface of the Printing cylinder 11 completely surrounds is now prepared for printing.
  • the shield 4 is completely removed from the peripheral surface 13, the The inking process and printing can begin.
  • On magazine insert 10 is the Shield 4 attached, the previously shown in FIG. 3 when mounting the printing form 1 the printing form cylinder 11 detached from the surface of the printing area 8 has been. It hangs, picked up by the catch hooks 9, from the magazine insert 10 and can from the printing plate changing device not shown here be enclosed.
  • FIGS. 5-9 show a further embodiment of the solution according to the invention described.
  • FIG. 5 shows an example of a printing form 1 which is wrapped in a shield 4.
  • the shield 4 has a front edge 3 and a rear edge 2 of the printing form 1 over surrounding areas, which stick to each other when placed on top of each other.
  • FIG. 6 shows an endless shield running around a magazine insert.
  • an insert 10 includes a longitudinal beam 18, on the upper and lower Each end of a roller 19 and 20 is rotatably received. Rollers 19 and 20 are each mounted with pins 21, 22 in the longitudinal beam 18. To the surfaces of the Rollers 19, 20 runs around the endless shield 4, which at its end region in the Connection area 17 adhered to each other. The on the endless shield 4 recorded printing form 1 lies with its printing area 8 by means of the endless Shield 4 on magazine insert 10 without touching it.
  • the illustration 7 is the mounting process of the printing form 1 on the jacket of the Printing form cylinder 11 shown. The printing form 1 is with its front edge 3 in Clamping channel 12 of the printing form cylinder 11 is added and is during this slowly moved in the direction of rotation 14, mounted on the circumference of the cylinder 11.
  • the mounting direction of the printing form 1 on the jacket of the printing form cylinder 11 is included Denotes reference numeral 23; while the printing forme 11 is being opened, the Endless shield 4 continuously around the rollers 19, 20 and thereby solves the printing area 8 of printing form 1 shielding area of shield 4 slowly from this.
  • the connection region 17 has the Shield 4 moves upwards, so the printing form 1 is already further accrued on the circumference of the printing form cylinder 11.
  • the Downward movement of the printing form according to reference numeral 23 on the peripheral surface of the Printing forme cylinder 11 out there is no relative movement between the separating Shield 4 and the surface of the printing form 1.
  • the transfer movement is here directed perpendicular to the surface of the printing form 1, and requires only a small Effort. Damage to the surface of the printing form 1 by such Kind of transfer movement is almost impossible.
  • the printing form 1, the printing area 8 of which is provided with a shield 4 are attached to the magazine insert 10 such that the overhanging areas around the two rollers 19 and 20 are beaten, then the ends of the Shield 4 placed on top of each other and form the connection area 17 as in the Figures 6 and 7 already shown.
  • Fig. 8 is a printing form completely wound on the cylinder surface reproduced.
  • the printing form 1 is now completely separated from the endless shield 4 rotates around the two rollers 19 and 20 of the insert 10.
  • the shield 4 can if necessary, can be reused by the ends in the connection region 17 are separated and then a printing area of a printing form 1 is covered and can be protected against external influences. It is important that the shield 4 as soon as possible after the printing treatment necessary for printing Area 8 is applied to the respective printing area 8 of the printing form 1.
  • Fig. 9 shows a printing form as already shown in Fig. 1, with one down overhanging shield.
  • the printing area 8 is covered by a shield 4, which is covered with a Adhesive area 5 on the surface of the printing form 1 outside the printing area 8 attached.
  • the printing form 1 has a front edge 3 and a rear edge 2.
  • 10 is a printing form 1 provided with a shielding film 4 on one Magazine insert 24 of a printing plate changing device added.
  • the overhang region 7 of the shielding film 4 can be driven by the operator Winding roller 26 are placed. This is driven by a drive 25 for example by means of an electric motor. After the rear end of the Shield 4 is wound around the roller 26, can be in accordance with the feed Pulling the printing form 1 onto the printing form cylinder 11, the shield 4 onto the driven winding roller 26 are added. To avoid Damage to the surface of the shield 4 is one Deflection roller 27 guided, which is provided at the lower end of the magazine 24.
  • Fig. 11 shows the detachment of the shield 4 from the printing form 1, which on the Printing form cylinder 11 is applied.
  • the printing forme 1 is fed in the pull-up direction 15 by rotating the Printing form cylinder 11 in the direction of rotation 14.
  • the printing form 1 is thus on the in the clamping channel 12 attached printing form leading edge 3 drawn on its circumference.
  • the shield 4 is continuously applied to the winding roller 26 wound up.
  • the winding speed of the drive 25 is with the Winding speed of printing form 1 synchronized with printing form cylinder 11, so that there is no speed difference between the surface of the Printing form 1 and the shield 4 comes.
  • the shield 4 becomes continuous detached from this according to the feed of the printing form 1 and not by a pulling off laterally, but by detaching the shielding film 4 perpendicular to the surface of the printing form 1.
  • the rolling movement of the detached Shielding film 4 takes place in the direction of the arrow according to FIG. 11 on the driven one Winding roller 26.
  • a wound shielding film 4 on the driven winding roller 26 there can also be several shielding foils from several different ones Winding operations originating from printing forms, which are then recorded as a whole can be removed again from the magazine insert 24 received shaft.
  • the Deflection roller 27 at the bottom of the magazine insert 24 is used for gentle deflection of the Shielding film 4 on the driven winding shaft 26. Furthermore, the roller 27 serves to to influence the direction of separation so that it is perpendicular to the surface of the Printing form 1 is directed.
  • Printing form cylinder 11 completely surrounds, the front and rear edge thereof in Clamping channel 12 of the printing form cylinder 11 are added.

Abstract

The protective device is fitted o a printing form intended to be fitted onto the cylinder of a rotary printing press. The end regions of the printing form are held in clamping devices of the cylinder. The printing form has a surface prepared for printing. The printing region of the printing form (1) is covered with a pull-off shielding (4). When the printing form is pulled onto the cylinder (11), the shielding can be pulled off.

Description

Die Erfindung bezieht sich auf eine Einrichtung zum Abschirmen der Oberflächen von Druckformen, wie sie beispielsweise auf die Druckformzylinder von Offset-Rotationsdruckmaschinen aufgebracht werden, sei es von Hand oder mittels automatischer Druckformwechseleinrichtungen.The invention relates to a device for shielding the surfaces of Printing forms, such as those on the printing form cylinders of offset rotary printing machines be applied, be it by hand or by means of automatic printing plate changing devices.

EP 0 678 383 B1 bezieht sich auf eine Vorrichtung zum Wechsel von Druckformen an Rotationsdruckmaschinen. Druckformzylinder umfassen einen Kanal, der die beiden Enden einer Druckform aufnimmt, wobei die Oberfläche der Druckformen um den Druckformzylinder herum gewunden ist, und wobei eine noch auf dem Druckformzylinder befindliche Druckform von Spanneinrichtungen freigegeben und in eine diese aufnehmende Einrichtung transportierbar ist sowie mit einer Einrichtung zur Zufuhr einer neuen Druckform zu dem Druckformzylinder. Ein Bereich der zuzuführenden Druckform wird durch schwenkbare Haltemittel zeitweilig fixiert und derart elastisch verformt, daß ein Ende der neuen Druckform zum selbsttätigen Einführen in den Kanal an die Mantelfläche des Druckformzylinders angestellt ist. Die druckende Fläche der Druckform rollt bei dieser Lösung direkt auf einer Vielzahl von frei drehbaren Rollen ab, welche durch die Druckformoberfläche durch Reibung in Drehung versetzt werden. Dies bewirkt einen gewissen Reibungsgrad zwischen der druckenden Oberfläche der Druckform und den äußeren Umfangsflächen der frei drehbaren Rolle. Da die druckende Oberfläche der Druckform sehr empfindlich ist, kann dies zu Beschädigungen der Druckform führen.EP 0 678 383 B1 relates to a device for changing printing forms Rotary printing machines. Printing form cylinders comprise a channel that connects the two Receives ends of a printing form, the surface of the printing forms around the Printing forme cylinder is wound around, and one is still on the Printing form cylinder located printing form released by clamping devices and in a receiving device is transportable and with a device for Feeding of a new printing form to the printing form cylinder. An area of The printing form to be fed is temporarily fixed by swiveling holding means and deformed so elastically that one end of the new printing form for automatic Is inserted into the channel on the outer surface of the printing form cylinder. The With this solution, the printing surface of the printing form rolls directly on a large number of freely rotatable rollers, which are caused by friction in the printing plate surface Rotation. This causes a certain degree of friction between the printing surface of the printing form and the outer peripheral surfaces of the free rotatable roller. Since the printing surface of the printing form is very sensitive, can this can damage the printing form.

EP 0 734 859 A1 bezieht sich auf eine Einrichtung zum Wechseln von Druckformen. Eine schwenkbare Druckformladeeinheit umfaßt sowohl ein Druckformzuführ- als auch ein Druckformentfernungsfach. Die Druckformladeeinrichtung ist sowohl in einer Arbeitsposition an den Kanal eines Druckformzylinders mit Klemmeinrichtungen als auch in eine Ladeposition schwenkbar, in der die Druckformladeeinheit aus der Arbeitsposition zurückgezogen ist. Die in eine vertikale Ladeposition schwenkbare Druckformladeeinheit ist an ein Halteelement anschwenkbar, an welchem ein Einlaufbereich für eine vom Druckformzylinder abzunehmende Druckform und Fördereinrichtungen für eine auf dem Druckformzylinder aufzubringende Druckform vorgesehen sind.EP 0 734 859 A1 relates to a device for changing printing forms. A swiveling printing form loading unit comprises both a printing form feed and a mold removal tray. The printing form loading device is both in one Working position on the channel of a printing form cylinder with clamping devices as also pivotable into a loading position in which the printing form loading unit from the Working position is withdrawn. The one that swivels into a vertical loading position Printing form loading unit can be pivoted onto a holding element, on which a Inlet area for a printing form and the printing form cylinder Conveying devices for a printing form to be applied to the printing form cylinder are provided.

Bei dieser Lösung aus dem Stand der Technik gleitet die druckende Oberfläche der Druckform direkt auf einer Anzahl stationär montierter Führungen. Auch bei dieser Lösung kann eine Beschädigung der empfindlichen druckenden Oberflächen der Druckformen nicht gänzlich ausgeschlossen werden.With this solution from the prior art, the printing surface of the slides Printing form directly on a number of stationary guides. This one too Solution can damage the sensitive printing surfaces of the Printing forms cannot be completely excluded.

Es wurde bereits versucht, die extrem empfindlichen Oberflächen von Druckformen mit einer Oberflächenbeschichtung zu versehen, aber es traten immer wieder Probleme mit adhäsiven Partikeln dieser Beschichtung auf, die sich in den Führungselementen für die Platten ablagerten und eine einwandfreie Führung der Platten beeinträchtigten.Attempts have already been made to use the extremely sensitive surfaces of printing forms to provide a surface coating, but problems always occurred adhesive particles of this coating, which are in the guide elements for the Deposited plates and impaired proper plate guidance.

Angesichts des aufgezeigten Standes der Technik sowie der aufgezeigten technischen Probleme lag der Erfindung die Aufgabe zugrunde, die druckenden Oberflächen von Druckformen mit einer Abschirmung zu versehen, die sich rückstandsfrei von diesen wieder entfernen läßt.In view of the prior art shown and the technical shown Problems the invention was based on the problem of printing surfaces To provide printing forms with a shield that is free of residues from them can be removed again.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des Patentanspruches 1 gelöst. According to the invention the object is solved by the features of claim 1.

Die Lösung gemäß der vorliegenden Erfindung geht mit einer Vielzahl von Vorteilen einher. Mittels der erfindungsgemäßen Abschirmung des druckenden Bereiches der Druckform wird die Beschädigung oder Verschmutzung des druckenden Bereiches bei den für das Drucken unerläßlichen Vorbereitungsarbeiten wirksam ausgeschlossen. Selbst auf automatischen Zuführ- oder Wechselvorrichtungen verbliebenen Farbrückstände vermögen den druckenden Bereich der Druckformen nicht zu beeinträchtigen. Ein Verkratzen des druckenden Bereiches ist nunmehr auch nicht mehr zu befürchten, da die empfindlichen, bereits vorbehandelten Bereiche der Druckform durch die Abschirmung vollständig abgedeckt sind. Die nur an den gerade nicht vorbehandelten Bereichen der Druckform anhaftende Abschirmung wird erst beim Aufziehen der Druckform von dieser entfernt, so daß die Druckform über die längstmögliche Zeitdauer gegen äußere Einflüsse geschützt bleibt.The solution according to the present invention has a number of advantages hand in hand. By means of the shielding of the printing area of the invention Printing form will damage or soiling the printing area effectively precludes the preparatory work necessary for printing. Even those left on automatic feeders or exchangers Color residues cannot cover the printing area of the printing forms affect. Scratching the printing area is now no longer to be feared, since the sensitive, pre-treated areas of the printing form are completely covered by the shield. The only one not at the moment pre-treated areas of the printing form adhering shielding is only at the Pulling the printing form away from this, so that the printing form over the remains protected against external influences for as long as possible.

In vorteilhafter Ausgestaltung des der Erfindung zugrundeliegenden Gedankens, ist die Abschirmung mit einer an der Druckform anhaftenden Beschichtung versehen. Diese Beschichtung ist an dem Bereich der Abschirmung angebracht, der außerhalb des druckenden Bereiches der Druckform liegt. Die Abschirmung kann in bevorzugter Ausgestaltung als Folie ausgebildet sein. Die Abschirmung kann auch bandförmig als endlos umlaufendes Teil ausgeführt sein, sie kann auch die Druckform vollständig umwickelnd ausgeführt sein.In an advantageous embodiment of the idea on which the invention is based, the Provide the shield with a coating adhering to the printing form. This Coating is applied to the area of the shield outside the printing area of the printing form. The shield may be more preferred Be designed as a film. The shield can also be band-shaped endless running part, it can also be the printing form completely be wrapped.

Die bereits mit der Abschirmung versehene Druckform kann in vorteilhafter Weise an einem Magazineinsatz für Druckformwechseleinrichtungen aufgenommen und montiert werden. So können Beschädigungen des druckenden Bereiches durch die in den Druckformwechseleinrichtung aufgenommenen stationären Führungen oder durch die dort vorgesehenen rotierenden Führungskörper für die Druckform wirksam ausgeschlossen werden. Der Magazineinsatz selbst oder die Druckformwechseleinrichtungen können mit Einhängvorrichtungen für den Bereich der Abschirmung versehen sein, der die Länge des abzuschirmenden druckenden Bereiches der Druckform übersteigt. Neben Einhängvorrichtungen kann am Magazineinsatz der Druckformwechseleinrichtung auch eine angetriebene Wickelwelle aufgenommen sein, welche während des Aufziehens der Druckform auf den Mantel des Druckformzylinders die Abschirmung von der Druckform abzieht und somit eine betriebsbereite Montage der Druckform auf dem Umfang des Zylinders ermöglicht. Die Haftung der Abschirmung an der Druckform ist gerade so bemessen, daß einerseits ein wirksamer Schutz des druckenden Bereiches gewährleistet ist, andererseits die Abschirmung rückstandsfrei vom druckenden Bereich abzuziehen ist. Das Kriterium des rückstandsfreien Ablösens der Abschirmung vom druckenden Bereich der Druckform ist insofern bedeutsam, als eventuell verbleibende Rückstände die Einfärbung der Druckform erheblich beeinträchtigen können, was das Hochfahren der Rotationsdruckmaschinen auf Produktionsgeschwindigkeit durch erforderliches Nacharbeiten erheblich verzögern kann.The printing form already provided with the shield can advantageously be attached to a magazine insert for printing plate changing devices recorded and assembled become. This can damage the printing area caused by the in the Printing form changing device recorded stationary guides or through the there provided rotating guide body effective for the printing form be excluded. The magazine insert itself or the Printing form changing devices can be with hooking devices for the area of Be shielded, the length of the printing area to be shielded the printing form. In addition to hanging devices, the magazine insert can be used for Printing form changing device also be a driven winding shaft, which during the mounting of the printing form on the jacket of the printing form cylinder the shield is removed from the printing form and is thus ready for assembly the printing form on the circumference of the cylinder. The liability of Shielding on the printing form is just such that, on the one hand, an effective one Protection of the printing area is guaranteed, on the other hand the shielding is to be removed from the printing area without leaving any residue. The criterion of residue-free removal of the shield from the printing area of the printing form important insofar as any remaining residues color the Printing form can significantly affect what the startup of the Rotary printing presses on production speed by required Rework can significantly delay.

Die erfindungsgemäße Druckform kann insbesondere in automatischen Plattenwechselvorrichtungen eingesetzt werden, die den Druckwerken der Rotationsdruckmaschine zugeordnet sind, gleich ob bogen- oder bahnverarbeitende Rotationsdruckmaschinen.The printing form according to the invention can in particular in automatic Plate changing devices are used, which the printing units of Rotary printing press are assigned, regardless of whether sheet or web processing Rotary printing machines.

Anhand einer Zeichnung sei die Erfindung nachstehend näher erläutert.The invention is explained in more detail below with reference to a drawing.

Es zeigt:

Fig. 1
eine Druckform, die mit einer überhängenden Abschirmung versehen ist,
Fig. 2
eine Druckform, deren überhängender Bereich an einem Magazineinsatz zum Einbau in einer automatische Druckformwechseleinrichtung einsetzbar ist,
Fig. 3
das Aufziehen der Druckform auf einen Druckformzylinder unter Entfernung der Abschirmung,
Fig. 4
die von der Druckform abgelöste Abschirmung,
Fig. 5
eine weitere Ausführungsvariante einer Abschirmung, welche die Druckform einhüllt,
Fig. 6
eine endlose auf einem Magazineinsatz umlaufende Abschirmung,
Fig. 7
den Aufziehvorgang einer Druckform auf den Mantel des Zylinder,
Fig. 8
eine fertig aufgezogene Druckform,
Fig. 9
eine weitere Ausführungsform einer Abschirmung,
Fig. 10
einen Magazineinsatz mit angetriebener Aufwickelwelle für die Abschirmung,
Fig. 11
den Aufziehvorgang unter Ablösung der Abschirmung gemäß Fig. 10, und
Fig. 12
die auf den Druckformzylinder aufgezogene Druckform sowie die vollständig aufgewickelte Abschirmung.
It shows:
Fig. 1
a printing form which is provided with an overhanging shield,
Fig. 2
a printing form, the overhanging area of which can be used on a magazine insert for installation in an automatic printing form changing device,
Fig. 3
pulling the printing form onto a printing form cylinder while removing the shield,
Fig. 4
the shield detached from the printing form,
Fig. 5
another embodiment of a shield that envelops the printing form,
Fig. 6
an endless shield encircling a magazine insert,
Fig. 7
the mounting process of a printing form on the jacket of the cylinder,
Fig. 8
a finished printing form,
Fig. 9
another embodiment of a shield,
Fig. 10
a magazine insert with a driven winding shaft for the shield,
Fig. 11
the mounting process with removal of the shield according to FIG. 10, and
Fig. 12
the printing form mounted on the printing form cylinder and the completely wound shield.

Fig. 1 zeigt eine Druckform, die mit einer überhängenden Abschirmung versehen ist.Fig. 1 shows a printing form which is provided with an overhanging shield.

Die Druckform 1 verfügt über eine Vorderkante 3 und eine Hinterkante 2, die beide in einem an einem Druckformzylinder 11 vorgesehenen Spannkanal 12 eingehangen werden können und mittels dort vorgesehener Klemm- und Spanneinrichtungen auf den Umfang des Druckformzylinders 11 gespannt werden. Die Druckform 1 ist mit einem druckenden Bereich 8 versehen, der soweit vorbehandelt ist, daß nach dem Aufspannen der Druckform und dem Einfärben gedruckt werden kann. Der druckende Bereich ist von einer Abschirmung 4 bedeckt, die an ihrem Haftbereich 5 an der Druckform 1 anhaltet und zwar außerhalb des bereits vorbehandelten druckenden Bereiches 8. Im Haftbereich 5 kann beispielsweise eine Beschichtung an der Abschirmung 4 aufgebracht sein, die ein Anhaften der Abschirmung 4 an der Druckform 1 ermöglicht, andererseits von dieser wieder rückstandsfrei abgelöst werden kann. Die Abschirmung 4 kann in vorteilhafter Weise als eine dünne Folie ausgebildet sein. Im Überhangbereich 7 der Abschirmung 4 können beispielsweise Öffnungen 6 vorgesehen sein, mit denen die Abschirmung 4 an einem Magazineinsatz 10 befestigt werden kann.
Fig. 2 zeigt eine Druckform mit einer Abschirmung, deren überhängender Bereich an einem Magazineinsatz eingehangen ist.
The printing form 1 has a front edge 3 and a rear edge 2, both of which can be hung in a clamping channel 12 provided on a printing form cylinder 11 and are clamped to the circumference of the printing form cylinder 11 by means of clamping and tensioning devices provided there. The printing form 1 is provided with a printing area 8 which has been pretreated to such an extent that printing can be carried out after the printing form has been opened and the inking has been completed. The printing area is covered by a shield 4, which stops at its adhesive area 5 on the printing form 1, specifically outside the pretreated printing area 8. In the adhesive area 5, for example, a coating can be applied to the shield 4, which prevents the shield 4 from adhering on the printing form 1 enables, on the other hand, can be removed again without leaving any residue. The shield 4 can advantageously be designed as a thin film. In the overhang area 7 of the shield 4, for example, openings 6 can be provided with which the shield 4 can be attached to a magazine insert 10.
Fig. 2 shows a printing form with a shield, the overhanging area of which is attached to a magazine insert.

Zum Einhängen des Überhangbereiches 7 der Abschirmung 4 sind an dem Magazineinsatz 10 zwei Fanghaken 9 aufgenommen. An diesen Fanghaken 9 kann der Überhangbereich 7 mittels seiner Öffnungen 6 befestigt werden. Danach kann der Einsatz 10 in eine automatische Plattenwechseleinrichtung oder ähnliches aufgenommen werden.To hang the overhang area 7 of the shield 4 are on the Magazine insert 10 two catch hooks 9 added. On this catch hook 9 can Overhang area 7 are attached by means of its openings 6. Then the Insert 10 added to an automatic plate changing device or the like become.

Fig. 3 zeigt das Aufziehen einer Druckform auf einen Druckformzylinder und die Entfernung der Abschirmung.Fig. 3 shows the mounting of a printing form on a printing form cylinder and Shield removal.

Die Druckform 1 ist mit der Vorderkante 3 im Spannkanal 12 eines Druckformzylinders 11 eingelassen, während sich der Druckformzylinder 11 während des Aufziehvorgangs in Rotationsrichtung 14 dreht. Während des Aufziehens der Druckform 1 bewegt sich diese in Aufziehrichtung 15 auf den Umfang des Druckformzylinders 11. In dem Maße, wie sich die aufzuziehende Druckform 1 auf die Umfangsfläche des Druckformzylinders 11 anschmiegt, wird die Abschirmung 4 von der Druckform 1 abgelöst und der druckende Bereich 8 der Druckform 1 somit sukzessive freigelegt. So ist der druckende Bereich 8 der Druckform 1 bis unmittelbar vor deren Aufziehen auf den Umfang des Druckformzylinders 11 durch die Abschirmung 4 wirksam geschützt. Der an den Fanghaken 9 aufgehängte Überhangbereich 7 der Abschirmung 4 bleibt während des Aufziehens der Druckform 1 und des allmählichen Ablösens der Abschirmung 4 an den Fanghaken 9 hängen, der Haftbereich 5 löst sich rückstandsfrei vom druckenden Bereich 8 ab. The printing form 1 is one with the front edge 3 in the clamping channel 12 Printing form cylinder 11 let in while the printing form cylinder 11 during of the winding process in the direction of rotation 14. While pulling up the Printing form 1 moves this in the drawing direction 15 to the circumference of the Printing form cylinder 11. To the extent that the printing form 1 to be mounted on the Surrounds the circumferential surface of the printing form cylinder 11, the shield 4 of of the printing form 1 and thus the printing area 8 of the printing form 1 successively exposed. So is the printing area 8 of the printing form 1 to immediate before mounting them on the circumference of the printing form cylinder 11 by the Shield 4 effectively protected. The one hung on the hook 9 The overhang area 7 of the shield 4 remains during the mounting of the printing form 1 and the gradual detachment of the shield 4 hang on the catch hook 9, the Adhesive area 5 separates from the printing area 8 without residue.

Das Abziehen des Haftbereiches 5 von der Druckform 1 erfolgt sukzessive während des Aufziehens der Druckform auf den Druckformzylinder 11. Die Haftkraft der adhäsiven Bereiche der Abschirmung 4 ist gerade so bemessen, daß einerseits ein wirksamer Schutz des druckenden Bereiches 8 gegen äußere Einflüsse besteht, andererseits die Haftung so bemessen ist, daß die Abschirmung 4 vollständig und rückstandsfrei von der Oberfläche der Druckform 1 ablösbar ist.The removal of the adhesive area 5 from the printing form 1 takes place successively during the Mount the printing form on the printing form cylinder 11. The adhesive force of the adhesive Areas of the shield 4 is dimensioned so that on the one hand an effective Protection of the printing area 8 against external influences, on the other hand Liability is such that the shield 4 is completely and residue-free from the Surface of the printing form 1 is removable.

Im in Fig. 4 gezeigten Zustand ist die Abschirmung 4 vollständig von der Druckform 1 abgetrennt.In the state shown in FIG. 4, the shield 4 is completely from the printing form 1 severed.

Die Druckform 1, die im aufgespannten Zustand 16 die Umfangsfläche des Druckformzylinders 11 vollständig umgibt, ist nunmehr für das Drucken vorbereitet. Die Abschirmung 4 ist vollständig von der Umfangsfläche 13 entfernt, der Einfärbevorgang und das Drucken können beginnen. Am Magazineinsatz 10 ist die Abschirmung 4 befestigt, die zuvor gemäß Fig. 3 beim Aufziehen der Druckform 1 auf den Druckformzylinder 11 von der Oberfläche des druckenden Bereiches 8 abgelöst wurde. Sie hängt, von den Fanghaken 9 aufgenommen, vom Magazineinsatz 10 herab und kann von der hier nicht näher dargestellten Druckformwechseleinrichtung umschlossen sein.The printing form 1, the 16 in the clamped state, the peripheral surface of the Printing cylinder 11 completely surrounds is now prepared for printing. The shield 4 is completely removed from the peripheral surface 13, the The inking process and printing can begin. On magazine insert 10 is the Shield 4 attached, the previously shown in FIG. 3 when mounting the printing form 1 the printing form cylinder 11 detached from the surface of the printing area 8 has been. It hangs, picked up by the catch hooks 9, from the magazine insert 10 and can from the printing plate changing device not shown here be enclosed.

In den Figuren 5 - 9 ist eine weitere Ausführungsform der erfindungsgemäßen Lösung beschrieben.FIGS. 5-9 show a further embodiment of the solution according to the invention described.

Fig. 5 zeigt beispielhaft eine Druckform 1, die in einer Abschirmung 4eingewickelt ist. Die Abschirmung 4 hat eine die Vorderkante 3 und die Hinterkante 2 der Druckform 1 über umschließende Bereiche, welche aufeinandergelegt aneinanderhaften.5 shows an example of a printing form 1 which is wrapped in a shield 4. The shield 4 has a front edge 3 and a rear edge 2 of the printing form 1 over surrounding areas, which stick to each other when placed on top of each other.

Fig. 6 zeigt eine endlose, auf eine einem Magazineinsatz umlaufende Abschirmung.6 shows an endless shield running around a magazine insert.

In Fig. 6 umfaßt ein Einsatz 10 einen Längsträger 18, an dessen oberen und unteren Enden jeweils eine Walze 19 bzw. 20 drehbar aufgenommen ist. Die Walzen 19 und 20 sind jeweils mit Zapfen 21, 22 in den Längsträger 18 gelagert. Um die Oberflächen der Walzen 19, 20 läuft die endlose Abschirmung 4 um, die an ihrem Endbereich im Verbindungsbereich 17 aneinanderhaftet. Die an der endlosen Abschirmung 4 aufgenommene Druckform 1 liegt mit ihrem druckenden Bereich 8 mittels der endlosen Abschirmung 4 am Magazineinsatz 10 an, ohne diesen zu berühren. In der Darstellung gemäß Fig. 7 ist der Aufziehvorgang der Druckform 1 auf den Mantel des Druckformzylinders 11 dargestellt. Die Druckform 1 ist mit ihrer Vorderkante 3 im Spannkanal 12 des Druckformzylinders 11 aufgenommen und wird während dieser sich langsam in Rotationsrichtung 14 bewegt, auf dem Umfang des Zylinders 11 aufgezogen. Die Aufziehrichtung der Druckform 1 auf den Mantel des Druckformzylinders 11 ist mit Bezugszeichen 23 bezeichnet; während des Aufziehens der Druckform 11 läuft die endlose Abschirmung 4 kontinuierlich um die Walzen 19, 20 um und löst dabei den den druckenden Bereich 8 der Druckform 1 abschirmenden Bereich der Abschirmung 4 langsam von dieser ab. Verglichen mit der Ausgangslage des Verbindungsbereiches 17 der Enden der Abschirmung 4 gemäß Fig. 6, hat sich der Verbindungsbereich 17 der Abschirmung 4 nach oben bewegt, dementsprechend ist die Druckform 1 auch schon weiter auf den Umfang des Druckformzylinders 11 aufgelaufen. Bei der Abwärtsbewegung der Druckform gemäß Bezugszeichen 23 auf die Umfangsfläche des Druckformzylinders 11 hin, tritt keine Relativbewegung zwischen der sich ablösenden Abschirmung 4 und der Oberfläche der Druckform 1 auf. Die Ablösebewegung ist hier senkrecht zur Oberfläche der Druckform 1 gerichtet, und erfordert nur einen geringen Kraftaufwand. Die Beschädigung der Oberfläche der Druckform 1 durch eine solcher Art erfolgende Ablösebewegung ist nahezu ausgeschlossen. In vorteilhafter Weise kann die Druckform 1, deren druckender Bereich 8 mit einer Abschirmung 4 versehen ist, derart am Magazineinsatz 10 befestigt werden, daß die überhängenden Bereiche um die beiden Walzen 19 bzw. 20 geschlagen werden, danach werden die Enden der Abschirmung 4 aufeinandergelegt und bilden den Verbindungsbereich 17 wie in den Figuren 6 und 7 bereits dargestellt.In Fig. 6, an insert 10 includes a longitudinal beam 18, on the upper and lower Each end of a roller 19 and 20 is rotatably received. Rollers 19 and 20 are each mounted with pins 21, 22 in the longitudinal beam 18. To the surfaces of the Rollers 19, 20 runs around the endless shield 4, which at its end region in the Connection area 17 adhered to each other. The on the endless shield 4 recorded printing form 1 lies with its printing area 8 by means of the endless Shield 4 on magazine insert 10 without touching it. In the illustration 7 is the mounting process of the printing form 1 on the jacket of the Printing form cylinder 11 shown. The printing form 1 is with its front edge 3 in Clamping channel 12 of the printing form cylinder 11 is added and is during this slowly moved in the direction of rotation 14, mounted on the circumference of the cylinder 11. The mounting direction of the printing form 1 on the jacket of the printing form cylinder 11 is included Denotes reference numeral 23; while the printing forme 11 is being opened, the Endless shield 4 continuously around the rollers 19, 20 and thereby solves the printing area 8 of printing form 1 shielding area of shield 4 slowly from this. Compared to the starting position of the connection area 17 6 of the ends of the shield 4, the connection region 17 has the Shield 4 moves upwards, so the printing form 1 is already further accrued on the circumference of the printing form cylinder 11. In the Downward movement of the printing form according to reference numeral 23 on the peripheral surface of the Printing forme cylinder 11 out, there is no relative movement between the separating Shield 4 and the surface of the printing form 1. The transfer movement is here directed perpendicular to the surface of the printing form 1, and requires only a small Effort. Damage to the surface of the printing form 1 by such Kind of transfer movement is almost impossible. Can advantageously the printing form 1, the printing area 8 of which is provided with a shield 4, are attached to the magazine insert 10 such that the overhanging areas around the two rollers 19 and 20 are beaten, then the ends of the Shield 4 placed on top of each other and form the connection area 17 as in the Figures 6 and 7 already shown.

In Fig. 8 ist eine vollständig auf die Zylindermantelfläche aufgewickelte Druckform wiedergegeben. In Fig. 8 is a printing form completely wound on the cylinder surface reproduced.

Die Druckform 1 ist nunmehr vollständig von der endlosen Abschirmung 4 getrennt, die um die beiden Walzen 19 bzw. 20 des Einsatzes 10 umläuft. Die Abschirmung 4 kann gegebenenfalls wiederverwendet werden, indem die Enden im Verbindungsbereich 17 getrennt werden und dann ein druckender Bereich einer Druckform 1 abgedeckt und gegen äußere Einwirkung geschützt werden kann. Wichtig ist, daß die Abschirmung 4 so früh wie möglich nach der für das Drucken notwendigen Behandlung des druckenden Bereiches 8 auf dem jeweils druckenden Bereich 8 der Druckform 1 aufgebracht wird.The printing form 1 is now completely separated from the endless shield 4 rotates around the two rollers 19 and 20 of the insert 10. The shield 4 can if necessary, can be reused by the ends in the connection region 17 are separated and then a printing area of a printing form 1 is covered and can be protected against external influences. It is important that the shield 4 as soon as possible after the printing treatment necessary for printing Area 8 is applied to the respective printing area 8 of the printing form 1.

Fig. 9 zeigt eine Druckform wie bereits in Fig. 1 dargestellt, mit einer nach unten überhängenden Abschirmung.Fig. 9 shows a printing form as already shown in Fig. 1, with one down overhanging shield.

Auch hier ist der druckende Bereich 8 von einer Abschirmung 4 bedeckt, die mit einem Haftbereich 5 an der Oberfläche der Druckform 1 außerhalb des druckenden Bereiches 8 anhaftet. In bereits dargestellter Weise verfügt die Druckform 1 über eine Vorderkante 3 und eine Hinterkante 2.Here, too, the printing area 8 is covered by a shield 4, which is covered with a Adhesive area 5 on the surface of the printing form 1 outside the printing area 8 attached. In the manner already shown, the printing form 1 has a front edge 3 and a rear edge 2.

In Fig. 10 ist eine mit einer Abschirmfolie 4 versehene Druckform 1 an einem Magazineinsatz 24 einer Druckformwechseleinrichtung aufgenommen.10 is a printing form 1 provided with a shielding film 4 on one Magazine insert 24 of a printing plate changing device added.

Der Überhangbereich 7 der Abschirmfolie 4 kann vom Bediener über eine angetriebene Wickelwalze 26 gelegt werden. Diese ist mittels eines Antriebes 25 angetrieben, beispielsweise mittels eines Elektromotors. Nachdem das hintere Ende der Abschirmung 4 um die Walze 26 gewickelt ist, kann entsprechend des Vorschubes beim Aufziehen der Druckform 1 auf den Druckformzylinder 11 die Abschirmung 4 auf die angetriebene Wickelwalze 26 aufgenommen werden. Zur Vermeidung von Beschädigungen der Oberfläche der Abschirmung 4 wird diese um eine Umlenkwalze 27 geführt, die am unteren Ende des Magazines 24 vorgesehen ist.The overhang region 7 of the shielding film 4 can be driven by the operator Winding roller 26 are placed. This is driven by a drive 25 for example by means of an electric motor. After the rear end of the Shield 4 is wound around the roller 26, can be in accordance with the feed Pulling the printing form 1 onto the printing form cylinder 11, the shield 4 onto the driven winding roller 26 are added. To avoid Damage to the surface of the shield 4 is one Deflection roller 27 guided, which is provided at the lower end of the magazine 24.

Fig. 11 zeigt das Ablösen der Abschirmung 4 von der Druckform 1, die auf den Druckformzylinder 11 aufgebracht wird. Fig. 11 shows the detachment of the shield 4 from the printing form 1, which on the Printing form cylinder 11 is applied.

Der Vorschub der Druckform 1 in Aufziehrichtung 15 erfolgt durch Drehung des Druckformzylinders 11 in Rotationsrichtung 14. Die Druckform 1 wird also über die in den Spannkanal 12 eingehängte Druckformvorderkante 3 auf dessen Umfang gezogen. Gleichzeitig wird die Abschirmung 4 kontinuierlich auf die Wickelwalze 26 aufgewickelt. Die Aufwickelgeschwindigkeit des Antriebes 25 ist mit der Aufziehgeschwindigkeit der Druckform 1 auf den Druckformzylinder 11 synchronisiert, so daß es nicht zu Geschwindigkeitsdifferenzen zwischen der Oberfläche der Druckform 1 und der Abschirmung 4 kommt. Die Abschirmung 4 wird kontinuierlich gemäß des Vorschubes der Druckform 1 von dieser abgelöst und zwar nicht durch ein seitlich erfolgendes Abziehen, sondern durch ein Ablösen der Abschirmfolie 4 senkrecht zur Oberfläche der Druckform 1. Die Aufrollbewegung der abgelösten Abschirmfolie 4 erfolgt in Richtung des Pfeiles gemäß Fig. 11 an der angetriebenen Wickelwalze 26.The printing forme 1 is fed in the pull-up direction 15 by rotating the Printing form cylinder 11 in the direction of rotation 14. The printing form 1 is thus on the in the clamping channel 12 attached printing form leading edge 3 drawn on its circumference. At the same time, the shield 4 is continuously applied to the winding roller 26 wound up. The winding speed of the drive 25 is with the Winding speed of printing form 1 synchronized with printing form cylinder 11, so that there is no speed difference between the surface of the Printing form 1 and the shield 4 comes. The shield 4 becomes continuous detached from this according to the feed of the printing form 1 and not by a pulling off laterally, but by detaching the shielding film 4 perpendicular to the surface of the printing form 1. The rolling movement of the detached Shielding film 4 takes place in the direction of the arrow according to FIG. 11 on the driven one Winding roller 26.

Fig. 12 schließlich zeigt eine auf dem Druckformzylinder aufgezogenen Druckform, sowie die vollständig aufgewickelte Abschirmfolie.12 finally shows a printing form mounted on the printing form cylinder, as well as the fully wound shielding film.

Anstelle einer aufgewickelten Abschirmfolie 4 auf der angetriebenen Wickelwalze 26 können dort auch mehrere Abschirmfolien von mehreren verschiedenen Aufziehvorgängen von Druckformen stammend aufgenommen sein, die dann als Ganzes von dem Magazineinsatz 24 aufgenommenen Welle wieder entfernt werden können. Die Umlenkwalze 27 unten am Magazineinsatz 24 dient zur schonenden Umlenkung der Abschirmfolie 4 auf die angetriebene Wickelwelle 26. Ferner dient die Walze 27 dazu, die Ablösungsrichtung so zu beeinflussen, daß diese senkrecht zur Oberfläche der Druckform 1 gerichtet ist.Instead of a wound shielding film 4 on the driven winding roller 26 there can also be several shielding foils from several different ones Winding operations originating from printing forms, which are then recorded as a whole can be removed again from the magazine insert 24 received shaft. The Deflection roller 27 at the bottom of the magazine insert 24 is used for gentle deflection of the Shielding film 4 on the driven winding shaft 26. Furthermore, the roller 27 serves to to influence the direction of separation so that it is perpendicular to the surface of the Printing form 1 is directed.

Auch ist in Fig. 12 gezeigt, daß die Druckform 1 in aufgespanntem Zustand den Druckformzylinder 11 vollständig umgibt, wobei Vorder- und Hinterkante derselben im Spannkanal 12 des Druckformzylinders 11 aufgenommen sind. It is also shown in Fig. 12 that the printing form 1 in the clamped state Printing form cylinder 11 completely surrounds, the front and rear edge thereof in Clamping channel 12 of the printing form cylinder 11 are added.

BezugszeichenlisteReference list

11
Druckplatteprinting plate
22nd
HinterkanteTrailing edge
33rd
VorderkanteLeading edge
44th
Abschirmungshielding
55
HaftbereichDetention area
66
Öffnungopening
77
ÜberhangbereichOverhang area
88th
druckender Bereichprinting area
99
FanghakenCatch hook
1010th
MagazineinsatzMagazine insert
1111
DruckformzylinderPrinting form cylinder
1212th
SpannkanalTension channel
1313
UmfangsflächeCircumferential surface
1414
RotationsachseAxis of rotation
1515
AufzugsrichtungDirection of the elevator
1616
aufgespannter Zustandopen state
1717th
VerbindungsbereichConnection area
1818th
Trägercarrier
1919th
Walzeroller
2020th
Walzeroller
2121
ZapfenCones
2222
ZapfenCones
2323
Bewegungsrichtung AbschirmungShielding direction of movement
2424th
MagazineinsatzMagazine insert
2525th
Antriebdrive
2626
angetriebene Wickelwelledriven winding shaft
2727
UmlenkwalzeDeflection roller

Claims (17)

Druckform zum Aufbringen auf einen Zylinder einer Rotationsdruckmaschine, wobei die Endbereiche der Druckform in Spanneinrichtungen an einem Zylinder aufgenommen werden und die Druckform eine für den Druck vorbereitete Oberfläche aufweist, dadurch gekennzeichnet, daß ein druckender Bereich (8) der Druckform (1) von einer abziehbaren Abschirmung (4) bedeckt ist, die beim Aufziehen der Druckform (1) auf einen Druckformzylinder (11) von der Druckform (1) entfernbar ist.Printing form for application to a cylinder of a rotary printing press, the end regions of the printing form in clamping devices on a cylinder be recorded and the printing form one prepared for printing Surface, characterized in that a printing area (8) of the Printing form (1) is covered by a removable shield (4), which at Pulling the printing form (1) onto a printing form cylinder (11) from the Printing form (1) is removable. Druckform gemäß Anspruch 1, dadurch gekennzeichnet, daß die Abschirmung (4) mit einer an der Druckform (1) anhaftenden Beschichtung versehen ist.Printing form according to claim 1, characterized in that the shield (4) is provided with a coating adhering to the printing form (1). Druckform gemäß Anspruch 2, dadurch gekennzeichnet, daß die Beschichtung in einem den druckenden Bereich (8) umgebenden Haftbereich (5) an der Oberfläche der Druckform (1) anhaftet.Printing form according to claim 2, characterized in that the coating in an adhesive area (5) on the surface surrounding the printing area (8) adheres to the printing form (1). Druckform gemäß Anspruch 1, dadurch gekennzeichnet, daß die Abschirmung (4) eine endliche Folie ist.Printing form according to claim 1, characterized in that the shield (4) is a finite foil. Druckform gemäß Anspruch 2, dadurch gekennzeichnet, daß die Abschirmung (4) an ihren gegenüberliegenden Enden mit einer anhaftenden Beschichtung versehen ist.Printing form according to claim 2, characterized in that the shield (4) provided at its opposite ends with an adhesive coating is. Druckform gemäß Anspruch 5, dadurch gekennzeichnet, daß die Abschirmung (4) die Druckform (1) vollständig umgibt und zwischen den Enden einen Verbindungsbereich (17) bildet. Printing form according to claim 5, characterized in that the shield (4) completely surrounds the printing form (1) and one between the ends Connection area (17) forms. Druckform gemäß Anspruch 1, dadurch gekennzeichnet, daß die Druckform (1) samt Abschirmung (4) an einem Magazineinsatz (10) für Druckformwechselsysteme aufgenommen ist.Printing form according to claim 1, characterized in that the printing form (1) together with the shield (4) on a magazine insert (10) for printing form change systems is recorded. Druckform gemäß Anspruch 1, dadurch gekennzeichnet, daß ein Überhangbereich (7) der Abschirmung (4) am Magazineinsatz (10, 24) aufgenommen wird.Printing form according to claim 1, characterized in that an overhang area (7) the shield (4) is received on the magazine insert (10, 24). Druckform gemäß Anspruch 8, dadurch gekennzeichnet, daß der Magazineinsatz (10) mit Einhängvorrichtungen (6) für den Überhangbereich (7) der Abschirmung (4) versehen ist.Printing form according to claim 8, characterized in that the magazine insert (10) with hooking devices (6) for the overhang area (7) of the shield (4) is provided. Druckform gemäß Anspruch 8, dadurch gekennzeichnet, daß der Magazineinsatz (24) mit einer Aufwickeleinrichtung (25, 26) für den Überhangbereich (7) der Abschirmung (4) versehen ist.Printing form according to claim 8, characterized in that the Magazine insert (24) with a winding device (25, 26) for the Overhang area (7) of the shield (4) is provided. Druckform gemäß Anspruch 1, dadurch gekennzeichnet, daß während des Aufziehens der Druckform (1) auf den Umfang des Plattenzylinders (11) die Abschirmung (4) vom druckenden Bereich (8) der Druckform (1) abgezogen wird.Printing form according to claim 1, characterized in that during the Pulling the printing form (1) on the circumference of the plate cylinder (11) Shield (4) is removed from the printing area (8) of the printing form (1). Druckform gemäß Anspruch 11, dadurch gekennzeichnet, daß sich die Abschirmung (4) während des Aufziehens der Druckform (1) in Aufzugsrichtung (15) an ihrem Haftbereich (5) von der Druckform (1) löst.Printing form according to claim 11, characterized in that the shield (4) during the mounting of the printing form (1) in the direction of the elevator (15) their adhesive area (5) from the printing form (1). Druckform gemäß Anspruch 11, dadurch gekennzeichnet, daß die Abschirmung (4) während des Aufziehens der Druckform (1) in Aufzugsrichtung (15) von einer am Magazineinsatz aufgenommenen Wickelwelle (26) aufgewickelt wird. Printing form according to claim 11, characterized in that the shield (4) during the mounting of the printing form (1) in the winding direction (15) of a winding shaft (26) received on the magazine insert is wound up. Druckform gemäß Anspruch 5, dadurch gekennzeichnet, daß eine an ihren Enden einen Verbindungsbereich (17) bildende Abschirmung (14) von einem Magazinein-satz (10) aufgenommen ist und die Druckform (1) beim Aufziehen auf den Druckformzylinder (11) von dieser abgeschält wird.Printing form according to claim 5, characterized in that one at its ends a shield (14) forming a connection area (17) from one Magazine insert (10) is received and the printing form (1) when opening is peeled off from the printing form cylinder (11). Druckform gemäß Anspruch 14, dadurch gekennzeichnet, daß die an ihren Enden einen Verbindungsbereich (17) bildende Abschirmung (4) um Umlenkkörper (19, 20) des Magazineinsatzes (24) umläuft.Printing form according to claim 14, characterized in that at its ends a shield (4) forming a connecting area (17) around deflecting bodies (19, 20) of the magazine insert (24) rotates. Druckformwechseleinrichtung zum Austausch von Druckformen an einem Zylinder von Rotationsdruckmaschinen, wobei die Endbereiche der Druckform in Spann- einrichtungen des Zylinders aufgenommen werden und die Druckform eine für den Druck vorbereitete Oberfläche aufweist, dadurch gekennzeichnet, daß ein druckender Bereich (8) der Druckform (1) von einer abziehbaren Abschirmung (4) bedeckt ist, der beim Aufziehen der Druckform (1) auf einen Druckformzylinder (11) von der Druckform (1) entfernbar ist.Printing form changing device for exchanging printing forms on one Cylinder of rotary printing machines, the end regions of the printing form in Clamping devices of the cylinder are included and the printing form has a surface prepared for printing, characterized in that a printing area (8) of the printing form (1) from a peelable Shielding (4) is covered, when the printing form (1) is pulled onto one Printing form cylinder (11) can be removed from the printing form (1). Druckwerk mit einer Druckformwechseleinrichtung zum Austausch von Druckformen an einem Zylinder von Rotationsdruckmaschinen, wobei die Endbereiche der Druckform in Spanneinrichtungen des Zylinders aufgenommen werden und die Druckform eine für den Druck vorbereitete Oberfläche aufweist, dadurch gekennzeichnet, daß ein druckender Bereich der Druckform (1) von einer abziehbaren Abschirmung (4) bedeckt ist, der beim Aufziehen der Druckplatte (1) auf einen Druckformzylinder (11) von der Druckform (1) entfernbar ist.Printing unit with a printing plate changing device for the exchange of Printing forms on a cylinder of rotary printing presses, the End areas of the printing form in the clamping devices of the cylinder and the printing form has a surface prepared for printing, characterized in that a printing area of the printing form (1) from a removable shield (4) is covered, which when pulling the pressure plate (1) on a printing form cylinder (11) can be removed from the printing form (1).
EP99120856A 1998-11-05 1999-10-26 Device for protecting the surface of a printing plate Expired - Lifetime EP0999045B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19850891 1998-11-05
DE19850891 1998-11-05
FR9910630 1999-08-19
FR9910630A FR2785565B1 (en) 1998-11-05 1999-08-19 DEVICE FOR PROTECTING THE SURFACE OF PRINTING FORMS
DE19948925A DE19948925A1 (en) 1998-11-05 1999-10-11 Device for shielding the surface of printing forms
DE19948925 1999-10-11

Publications (2)

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EP0999045A1 true EP0999045A1 (en) 2000-05-10
EP0999045B1 EP0999045B1 (en) 2002-09-04

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EP99120856A Expired - Lifetime EP0999045B1 (en) 1998-11-05 1999-10-26 Device for protecting the surface of a printing plate

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EP (1) EP0999045B1 (en)
AT (1) ATE223313T1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02225089A (en) * 1989-02-27 1990-09-07 Dainippon Printing Co Ltd Automatic peeling-off device of waterless printing plate cover film
JPH0566567A (en) * 1991-09-06 1993-03-19 Fuji Photo Film Co Ltd Protection film peeling method for waterless lithographic printing plate
JPH0566566A (en) * 1991-09-06 1993-03-19 Fuji Photo Film Co Ltd Protection film peeling device for waterless lithographic printing plate
US5533452A (en) * 1990-11-19 1996-07-09 Canon Kabushiki Kaisha Method of peeling a release film from a photosensitive plate blank

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02225089A (en) * 1989-02-27 1990-09-07 Dainippon Printing Co Ltd Automatic peeling-off device of waterless printing plate cover film
US5533452A (en) * 1990-11-19 1996-07-09 Canon Kabushiki Kaisha Method of peeling a release film from a photosensitive plate blank
JPH0566567A (en) * 1991-09-06 1993-03-19 Fuji Photo Film Co Ltd Protection film peeling method for waterless lithographic printing plate
JPH0566566A (en) * 1991-09-06 1993-03-19 Fuji Photo Film Co Ltd Protection film peeling device for waterless lithographic printing plate

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 532 (M - 1051) 22 November 1990 (1990-11-22) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 390 (P - 1577) 21 July 1993 (1993-07-21) *

Also Published As

Publication number Publication date
EP0999045B1 (en) 2002-09-04
ATE223313T1 (en) 2002-09-15

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