EP1426182A1 - Excimer radiator for the drier of a printing press - Google Patents

Excimer radiator for the drier of a printing press Download PDF

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Publication number
EP1426182A1
EP1426182A1 EP03026705A EP03026705A EP1426182A1 EP 1426182 A1 EP1426182 A1 EP 1426182A1 EP 03026705 A EP03026705 A EP 03026705A EP 03026705 A EP03026705 A EP 03026705A EP 1426182 A1 EP1426182 A1 EP 1426182A1
Authority
EP
European Patent Office
Prior art keywords
reflector
excimer
emitter
printing press
housing
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
EP03026705A
Other languages
German (de)
French (fr)
Other versions
EP1426182B1 (en
Inventor
Andreas Dipl.-Ing. Ihme
Axel Sobottka
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.)
Manroland AG
Original Assignee
MAN Roland 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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1426182A1 publication Critical patent/EP1426182A1/en
Application granted granted Critical
Publication of EP1426182B1 publication Critical patent/EP1426182B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0486—Particular types of dryers

Definitions

  • the invention relates to an excimer heater for the dryer a printing press according to the preamble of claim 1.
  • the printed sheets are printed in sheetfed offset printing machines via cylinders and drums through the individual printing units and after the last printing unit by one or more painting and other finishing facilities promoted. About chain systems the sheets are transported from a last one Drum to the boom stack. To smear the fresh printed sheets during transport between the printing units, between the last printing unit and the delivery or A variety of painting equipment to avoid Provide dryer facilities.
  • UV lamps and in particular Excimer heater used as a dryer When printing UV inks, UV lamps and in particular Excimer heater used as a dryer. The one on the printed one Side of the sheet is directed towards UV radiation To design intensity and distribution in such a way that maximum printing speed a complete curing of colors is achieved. An incomplete hardening the color changes when the sheet is touched by sheet guiding devices or in the delivery to damage and thus waste to lead.
  • Excimer emitters for sheetfed offset presses are for example from EP 378 826 A2 of DE 198 57 984 A1 and EP 891 525 B1.
  • the generated in tubular excimer emitters Radiation is very divergent. This is because that the discharge space has a circular cross section has formed by the inner and outer tubes of the Dielectric receiving space.
  • Area heater with one rectangular reflector only deliver in close range (on some Millimeters) of technically usable radiation power. moreover the UV intensity decreases sharply with increasing distance.
  • the UV lamp according to EP 891525 B1 has one the format width of the machine extending tube as a radiation generator on which is arranged in a housing with a Reflector interacts.
  • the one created by the tube Radiation is directed onto the substrate.
  • a high radiation power in the from Excimer emitters irradiated the area of the printed sheet achieve.
  • For a complete hardening of the printing inks often several single radiators are connected in series, however, what corresponding space in the printing press presupposes.
  • the object of the present invention is therefore an excimer emitter according to the preamble of claim 1 expand, so that a high radiation output with compact Design is possible.
  • Excimer emitter tubes running parallel to each other are each assigned an associated reflector.
  • the reflectors assigned to the excimer emitter tubes are preferably parabolic in shape.
  • Preferably 2 tubes are provided.
  • the parallel arrangement of two emitter tubes in one Housing with associated and preferably a common Reflector parts forming reflector result in an optimal Irradiation of the printing material in the respectively predetermined Distance.
  • the mirror geometry is based on the distance calculated.
  • the corresponding parameters are here Mirror shape, the position / orientation of the emitter tube to Mirror and the angle of inclination of the mirror elements to each other.
  • Two emitter tubes 2 and 3 run parallel inside a downward transparent (open) housing 1.
  • the radiator tubes 2 and 3 are not in the figure Shots shown at both ends in respective brackets of the housing 1 attached.
  • Each emitter tube 2, 3 is a reflector section 4, 5 assigned, which form a common reflector system.
  • the reflector sections 4, 5 are in terms of Arrangement and spacing of the radiator tubes 2, 3 calculated in this way and designed so that in a desired Distance between the emitter tubes 2, 3 the required radiation intensity results.

Abstract

The drying stage of a printing machine and in particular an offset printing process, uses a pair of ultra violet emitting tubes (2,3) mounted in parallel. They are positioned next to reflector surfaces (4) in a housing to generate the required intensity.

Description

Die Erfindung betrifft einen Excimer-Strahler für den Trockner einer Druckmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to an excimer heater for the dryer a printing press according to the preamble of claim 1.

[Stand der Technik][State of the art]

In Bogenoffsetdruckmaschinen werden die bedruckten Bogen über Zylinder und Trommeln durch die einzelnen Druckwerke und nach dem letzten Druckwerk durch ein oder mehrere Lackierund sonstige Veredelungseinrichtungen gefördert. Über Kettensysteme erfolgt der Transport der Bogen von einer letzten Trommel zum Auslegerstapel. Um ein Abschmieren der frisch bedruckten Bogen beim Transport zwischen den Druckwerken, zwischen dem letzten Druckwerk und dem Ausleger bzw. den Lackiereinrichtungen zu vermeiden, sind an einer Vielzahl von Stellen Trocknereinrichtungen vorgesehen.The printed sheets are printed in sheetfed offset printing machines via cylinders and drums through the individual printing units and after the last printing unit by one or more painting and other finishing facilities promoted. About chain systems the sheets are transported from a last one Drum to the boom stack. To smear the fresh printed sheets during transport between the printing units, between the last printing unit and the delivery or A variety of painting equipment to avoid Provide dryer facilities.

Beim Druck von UV-Farben werden UV-Strahler und insbesondere Excimer-Strahler als Trockner verwendet. Die auf die bedruckte Seite der Bogen gerichtete UV-Strahlung ist hinsichtlich Intensität und Verteilung so zu gestalten, dass auch bei maximaler Druckgeschwindigkeit eine vollständige Aushärtung der Farben erzielt wird. Ein nicht vollständiges Aushärten der Farbe wird bei Berührung des Bogens mit Bogenleiteinrichtungen bzw. im Ausleger zu Beschädigungen und somit Makulatur führen. Excimer-Strahler für Bogenoffsetdruckmaschinen sind beispielsweise aus der EP 378 826 A2 der DE 198 57 984 A1 sowie der EP 891 525 B1 bekannt.When printing UV inks, UV lamps and in particular Excimer heater used as a dryer. The one on the printed one Side of the sheet is directed towards UV radiation To design intensity and distribution in such a way that maximum printing speed a complete curing of colors is achieved. An incomplete hardening the color changes when the sheet is touched by sheet guiding devices or in the delivery to damage and thus waste to lead. Excimer emitters for sheetfed offset presses are for example from EP 378 826 A2 of DE 198 57 984 A1 and EP 891 525 B1.

Die in röhrenförmig ausgebildeten Excimer-Strahlern erzeugte Strahlung ist stark divergent. Dies hat seinen Grund darin, dass der Entladungsraum einen kreisförmigen Querschnitt aufweist, gebildet durch die innere und äußere Röhre des das Dielektrikum aufnehmenden Raumes. Flächenstrahler mit einem rechteckigen Reflektor liefern nur im Nahbereich (auf einige Millimeter) technisch nutzbare Bestrahlungsleistungen. Zudem nimmt mit zunehmenden Abstand die UV-Intensität stark ab.The generated in tubular excimer emitters Radiation is very divergent. This is because that the discharge space has a circular cross section has formed by the inner and outer tubes of the Dielectric receiving space. Area heater with one rectangular reflector only deliver in close range (on some Millimeters) of technically usable radiation power. moreover the UV intensity decreases sharply with increasing distance.

Bei Bogenoffsetdruckmaschinen liegt der Abstand zwischen Strahler und Bedruckstoffebene aus technischen Gründen im Bereich einige Zentimeter. Zudem ist der Einbauraum oft begrenzt. Um technisch nutzbare Intensitäten zu erzielen, muss die Strahlung daher gerichtet werden.In sheetfed offset presses, the distance is between Spotlight and substrate level for technical reasons in Area a few centimeters. In addition, the installation space is often limited. To achieve technically usable intensities, the radiation must therefore be directed.

Der UV-Strahler gemäß der EP 891525 B1 weist eine sich über die Formatbreite der Maschine erstreckende Röhre als Strahlungserzeuger auf, welche mit einem in einem Gehäuse angeordneten Reflektor zusammenwirkt. Die durch die Röhre erzeugte Strahlung wird gerichtet auf den Bedruckstoff gelenkt. Gerade bei schnelllaufenden Bogendruckmaschinen ist es im UV-Farbendruck wichtig, eine hohe Strahlungsleistung in dem vom Excimer-Strahler bestrahlten Bereich des Druckbogens zu erzielen. Zu einer vollständigen Aushärtung der Druckfarben werden oft auch mehrere Einzelstrahler hintereinander geschaltet, was jedoch entsprechenden Bauraum in der Druckmaschine voraussetzt.The UV lamp according to EP 891525 B1 has one the format width of the machine extending tube as a radiation generator on which is arranged in a housing with a Reflector interacts. The one created by the tube Radiation is directed onto the substrate. Just in high-speed sheet-fed printing machines, it is in UV ink printing important, a high radiation power in the from Excimer emitters irradiated the area of the printed sheet achieve. For a complete hardening of the printing inks often several single radiators are connected in series, however, what corresponding space in the printing press presupposes.

[Aufgabe der Erfindung]OBJECT OF THE INVENTION

Aufgabe der vorliegenden Erfindung ist es daher, einen Excimer-Strahler gemäß dem Oberbegriff von Anspruch 1 derartig zu erweitern, so dass eine hohe Strahlungsleistung bei kompakter Bauform möglich ist.The object of the present invention is therefore an excimer emitter according to the preamble of claim 1 expand, so that a high radiation output with compact Design is possible.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This task is solved by the characteristic features of claim 1. Developments of the invention result from the subclaims.

[Beispiele][Examples]

Nach der Erfindung ist vorgesehen, dass in einem Gehäuse parallel zueinander verlaufende Excimer-Strahlerröhren mit jeweils einem zugeordneten Reflektor angeordnet sind. Dadurch ergibt sich eine hohe Strahlungsbündelung sowie eine kompakte Bauform. Die den Excimer-Strahlerröhren zugeordneten Reflektoren sind dabei bevorzugt von parabolischer Form. Vorzugsweise sind 2 Röhren vorgesehen.According to the invention it is provided that in a housing Excimer emitter tubes running parallel to each other are each assigned an associated reflector. Thereby there is a high concentration of radiation and a compact Design. The reflectors assigned to the excimer emitter tubes are preferably parabolic in shape. Preferably 2 tubes are provided.

Die parallele Anordnung von zwei Strahlerröhren in einem Gehäuse mit zugeordneten und vorzugsweise einen gemeinsam Reflektor bildenden Reflektorteilen ergibt eine optimale Bestrahlung des Bedruckstoffes im jeweilig vorgegebenen Abstand. Entsprechend dem Abstand wird die Spiegelgeometrie berechnet. Die entsprechenden Parameter sind hierbei die Spiegelform, die Position/Orientierung der Strahlerröhre zum Spiegel sowie der Neigungswinkel der Spiegelelemente zueinander.The parallel arrangement of two emitter tubes in one Housing with associated and preferably a common Reflector parts forming reflector result in an optimal Irradiation of the printing material in the respectively predetermined Distance. The mirror geometry is based on the distance calculated. The corresponding parameters are here Mirror shape, the position / orientation of the emitter tube to Mirror and the angle of inclination of the mirror elements to each other.

Des weiteren erfolgt die Erläuterung eines Ausführungsbeispiels der Erfindung anhand der Zeichnung. Diese zeigt die Anordnung der zwei Strahlerröhren mit zugeordneten Reflektor in perspektivischer Ansicht.Furthermore, an exemplary embodiment is explained the invention with reference to the drawing. This shows the Arrangement of the two emitter tubes with assigned reflector in perspective view.

Zwei Strahlerröhren 2 und 3 verlaufen parallel innerhalb eines nach unten strahlungsdurchlässigen (offenen) Gehäuses 1. Die Strahlerrören 2 und 3 sind durch in der Figur nicht dargestellte Aufnahmen an beiden Enden in jeweiligen Halterungen des Gehäuses 1 befestigt.Two emitter tubes 2 and 3 run parallel inside a downward transparent (open) housing 1. The radiator tubes 2 and 3 are not in the figure Shots shown at both ends in respective brackets of the housing 1 attached.

Jeder Strahlerröhre 2, 3 ist ein Reflektorabschnitt 4, 5 zugeordnet, welche ein gemeinsames Reflektorsystem bilden. Die Reflektorabschnitte 4, 5 sind dabei hinsichtlich der Anordnung und Beabstandung der Strahlerröhren 2, 3 so berechnet und gestaltet, so dass sich in einem gewünschten Abstand der Strahlerröhren 2, 3 die erforderliche Strahlungsstärke ergibt. Each emitter tube 2, 3 is a reflector section 4, 5 assigned, which form a common reflector system. The reflector sections 4, 5 are in terms of Arrangement and spacing of the radiator tubes 2, 3 calculated in this way and designed so that in a desired Distance between the emitter tubes 2, 3 the required radiation intensity results.

[Bezugszeichenliste][REFERENCE LIST]

11
Gehäusecasing
22
Strahlerröhreradiator tube
33
Strahlerröhreradiator tube
44
Reflektorabschnittreflector section
55
Reflektorabschnittreflector section

Claims (3)

Excimer-Strahler für den Trockner einer Druckmaschine, insbesondere Bogenoffsetdruckmaschine, bestehend aus einer in einem Gehäuse angeordneten Strahlerröhre sowie einem zugeordnetem Reflektor,
dadurch gekennzeichnet, dass in dem Gehäuse (1) parallel zueinander verlaufende Strahlerröhren (2, 3) angeordnet sind, denen jeweils ein Reflektorabschnitt (4, 5) zur Erzeugung einer vorgesehenen Strahlungsverteilung zugeordnet sind.Excimer emitter for the dryer of a printing press, in particular sheet-fed offset printing press, consisting of an emitter tube arranged in a housing and an associated reflector,
characterized in that in the housing (1) mutually parallel emitter tubes (2, 3) are arranged, each of which a reflector section (4, 5) is assigned to generate a radiation distribution provided. Excimer-Strahler nach Anspruch 1,
dadurch gekennzeichnet, dass in dem Gehäuse (1) zwei parallel zueinander verlaufende Strahlerröhren (2, 3) angeordnet sind.Excimer emitter according to claim 1,
characterized in that two parallel radiator tubes (2, 3) are arranged in the housing (1). Excimer-Strahler nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Reflektorabschnitte (4, 5) durch ein gemeinsames Reflektorsystem gebildet sind.Excimer emitter according to claim 1 or 2,
characterized in that the reflector sections (4, 5) are formed by a common reflector system.
EP03026705A 2002-12-06 2003-11-21 Excimer radiator for the drier of a printing press Expired - Lifetime EP1426182B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20218908U 2002-12-06
DE20218908U DE20218908U1 (en) 2002-12-06 2002-12-06 Excimer heater for the dryer of a printing press

Publications (2)

Publication Number Publication Date
EP1426182A1 true EP1426182A1 (en) 2004-06-09
EP1426182B1 EP1426182B1 (en) 2008-01-16

Family

ID=7977701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03026705A Expired - Lifetime EP1426182B1 (en) 2002-12-06 2003-11-21 Excimer radiator for the drier of a printing press

Country Status (5)

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US (1) US7047662B2 (en)
EP (1) EP1426182B1 (en)
JP (1) JP2004188975A (en)
AT (1) ATE383948T1 (en)
DE (2) DE20218908U1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007256334A (en) * 2006-03-20 2007-10-04 Nec Lcd Technologies Ltd Color filter printing method, color filter printing apparatus, and color filter substrate
US20100154244A1 (en) * 2008-12-19 2010-06-24 Exfo Photonic Solutions Inc. System, Method, and Adjustable Lamp Head Assembly, for Ultra-Fast UV Curing
WO2012014518A1 (en) * 2010-07-30 2012-02-02 Ｎｋワークス株式会社 Ultraviolet irradiation device
US20220252272A1 (en) * 2021-02-05 2022-08-11 Inforesight Consumer Products, Inc. Radiant Heater

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB557252A (en) * 1942-08-19 1943-11-11 Gen Electric Co Ltd Improvements in apparatus for exposing objects to radiant heat
US4037112A (en) * 1975-03-25 1977-07-19 Ppg Industries, Inc. Apparatus for crosslinking ultraviolet light curable coatings
US4596935A (en) * 1983-04-25 1986-06-24 Christian Lumpp Device for the production and reflection of infrared or ultraviolet radiation
EP0370352A2 (en) * 1988-11-17 1990-05-30 Joseph Thomas Burgio, Jr. An apparatus for curing a coating on a moving substrate and a method of operating the apparatus
EP0378826A2 (en) 1989-01-17 1990-07-25 Heidelberger Druckmaschinen Aktiengesellschaft Device for drying inks on paper
EP0891525B1 (en) 1996-04-04 2000-02-23 GEW (EC) Limited Uv dryer with reflector
DE19857984A1 (en) 1998-12-16 2000-06-21 Koenig & Bauer Ag Drying station for printed sheets at a sheet-fed offset printing press has a hood containing the radiator and inert gas blower with cylinders at the hood entry and exit to prevent gas escape

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096294B (en) * 1981-02-25 1984-06-20 Svecia Silkscreen Maskiner Ab Drier
JPS6015189A (en) * 1983-07-07 1985-01-25 Namiki Precision Jewel Co Ltd Baked printing of reinforced glass
US4727655A (en) * 1987-02-02 1988-03-01 Amjo Infra Red Dryers, Inc. Heat lamp assembly with air duct
US5761377A (en) * 1995-09-28 1998-06-02 Holmes Products Corporation Tower type portable radiant heater
US6058621A (en) * 1998-06-05 2000-05-09 Eastman Kodak Company Apparatus and method for drying photosensitive material using radiant heat and air flow passages

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB557252A (en) * 1942-08-19 1943-11-11 Gen Electric Co Ltd Improvements in apparatus for exposing objects to radiant heat
US4037112A (en) * 1975-03-25 1977-07-19 Ppg Industries, Inc. Apparatus for crosslinking ultraviolet light curable coatings
US4596935A (en) * 1983-04-25 1986-06-24 Christian Lumpp Device for the production and reflection of infrared or ultraviolet radiation
EP0370352A2 (en) * 1988-11-17 1990-05-30 Joseph Thomas Burgio, Jr. An apparatus for curing a coating on a moving substrate and a method of operating the apparatus
EP0378826A2 (en) 1989-01-17 1990-07-25 Heidelberger Druckmaschinen Aktiengesellschaft Device for drying inks on paper
EP0891525B1 (en) 1996-04-04 2000-02-23 GEW (EC) Limited Uv dryer with reflector
DE19857984A1 (en) 1998-12-16 2000-06-21 Koenig & Bauer Ag Drying station for printed sheets at a sheet-fed offset printing press has a hood containing the radiator and inert gas blower with cylinders at the hood entry and exit to prevent gas escape

Also Published As

Publication number Publication date
DE50309015D1 (en) 2008-03-06
EP1426182B1 (en) 2008-01-16
JP2004188975A (en) 2004-07-08
US7047662B2 (en) 2006-05-23
ATE383948T1 (en) 2008-02-15
US20040168596A1 (en) 2004-09-02
DE20218908U1 (en) 2003-02-13

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